dam

I have been a vocal critic of big dams that are built mindlessly, but I believe it would be a mistake to halt all dam construction.

"Chinese hydro dams will be affected as well . . . several projects are being requested for review for exactly the same reasons, " he said.

Most of the existing irrigation and water supply dams, which are referred to as rural dams, are earth dams with a height of less than 15 m.

Blocking floods by means of dams and dikes was not enough, that was the lesson he drew from his father's failure.

Thousands of dams built since the mid-19th century have "completely altered the planet's terrestrial plumbing, " he said.

Thankfully, dams constructed in the last decade on the Kazakh side seem to be leading to a partial recovery.

Still, Ms. Wang said, the statement was a potentially valuable weapon in the fight against future big dams.

China already counts more dams within its borders than any other country. It has paid a huge price for this development.

From an orbit 217 kilometres above the earth, it is possible to see highways, airports, bridges, dams and even large vehicles.

China's reliance on hydropower maybe be coming back to haunt it. The reason: in an age of global warming, dams are running dry.

The work could improve understanding of the safety of dams, waste storage sites, or anywhere else fluid might be seeping through the ground.

Granular material is the main material of embankment dams and is one of the major study objectives of soil mechanics.

Proper, scientific study of the impacts of dams and of the cost and benefits of controlling water can help to resolve these conflicts.

The WCD was an independent, international, multi- stakeholder process which addressed the controversial issues associated with large dams.

If dams cannot be removed, then they should be equipped with eel ladders to help juvenile eels travel upstream.

There would be a compromise: 3 smaller dams would produce energy as well and spare most of the agricultural lands and people's homes.

You are usually sent as part of a team to help build schools, community centres, houses, bridges, dams or latrines.

A conservationists eyes sparkle as he recalls building dams on Strawberry Creel in the California of his youth.

The Salween is so far the longest free-flowing river in Southeast Asia despite having many efforts to construct dams in its basin.

Many governments are at least thinking in terms of dams and co-operation.

Some of these dams would be more than 1, 500 miles from the central grid to which the electricity will be sent.

then , to help the salmon swim upstream to deposit their eggs , they build special fish ladders up the smaller dams and rapids.

China is building most of Africa's new dams out of its own pocket, with all sorts of hoped-for spin-offs.

Hossain and his colleagues have detected up to 4 percent higher precipitation per year where dams have been built.

Some, like the two Elwha dams, were built without fish ladders, meaning they serve as completely impenetrable barriers to fish migrations.

We have developed instruments to help us in agriculture , irrigation , generating electricity , building dams , curing many fatal diseases.

China already boasts both the world's biggest dam (Three Gorges) and a greater total number of dams than the rest of the world combined.

Sensitivities over the Mekong's flows have led to talks between China and Thailand on how the dams may affect the water levels.

Water harvesting is more than just a matter of constructing ponds, dams, wells or tanks, of course.

The roller compacted concrete dam construction technique is one of preferred dams style in water conservation and hydroelectric project.

Although hydroelectric power seems like a good solution, the quantity, locations, and scale of such dams may not be ideal.

The general tend of the conclusions is applicable for the design of high arch dams located in high seismic area.

Dams built along the river and neighbouring waterways have also kept them from swimming into and out of their habitats.

Like the beavers, the Dutch are great builders of dams. 27% of the Dutch territory lies below the sea level.

None was available to the general public anymore. Those sites included two devoted to pipelines, one to nuclear reactors and one to dams.

The first chunks of concrete have been removed from the dams, which will slowly be eaten away over the next few years.

Many governments that once needed the bank's help for dams, roads and other big projects are earning plenty from the sale of raw materials.

Water in reservoirs behind dams, plus the water used to irrigate nearby land puts more moisture in the air, which falls as precipitation.

If it could only bust the monopolistic dams that have parched its economy, its desert might one day start to bloom.

Multi-arch dam is one of light buttress dams and its capping plate shows arch.

Scientists have already linked deforestation and dams to landslides in at least one other place.

There is no standard for the instability criteria for high arch dams due to its complexity.

then, a mechanical failure model for arch dams is proposed in account of total stiffness between dam body and rock foundation.

No breakdown was provided, however, raising concerns that most of the money will pay for hydroelectric dams and mineral mining.

But Hirsch points out that the MRC has no power to force Laos to abandon its plans for the Xayabouri and other Mekong dams.

Thirty-two years later, many more earthquakes have occurred which have shaken concrete dams of all types worldwide to a greater extent.

Make the Sun Moon Lake with continuous adequate water, now enough fix dike DAMS, more vast lake, become a hydro-electric power reservoirs.

Both dams were built to provide hydropower to a local paper mill, but alternate sources of power have been rerouted to serve the facility.

And their average economic life is assumed to be thirty years. Dams don't exist for ever, but what will replace them is not clear.

To be fair to the other dams on this list, however, it is actually three dams joined together to make one enormous structure.

Dams to be built across fish and crab migration routes shall be provided with appropriate fish passage facilities.

In Arizona, man-made dams across the Colorado River have made two large lakes in the middle of the dry desert country.

An overreliance on dams further contributed to the situation, he said.

China's plans to build dams in the difficult terrain of Tibet are still at a nascent stage compared with its projects in Xinjiang.

Literally thousands of concrete dams are providing water supply shortage, irrigation, flood control, and power generation.

Iraqi officials accuse Turkey of blocking water from crossing the border with a series of dams built over the last 30 years.

In March China broke its silence over dams, denying that it was responsible for reducing the Mekong's flow reaching downstream neighbours.

The TVA aimed to help reduce these problems by teaching better farming methods, replanting trees, and building dams.

Back in the 13th century building dams intercept water, and then wind-driven water tankers drain the water inside the cofferdam.

The giant dams that China is building on the international rivers flowing out of Tibet are a particular source of anxiety.

Construction and maintenance of two wood debris dams across the outlet stream of Spring Pond.

A report by Switzerland's Paul Scherrer Institute estimates that dams are the most potentially hazardous source of energy.

Dams can be used to store energy, by using pumped-storage hydroelectricity, excess energy to pump water into the reservoir.

large semiaquatic rodent with webbed hind feet and a broad flat tail; construct complex dams and underwater lodges.

We find that dams of this nature are inherently hazardous and cannot be permitted.

If you include dams used for power, it runs into the thousands . . .

The steepness of the hillsides along the Nu mean that much of the valuable farmland abuts the river and will be flooded by dams.

hydraulic fill dams are built of sand and silt brought into the dam in a stream of water , usually through a pipe.

It would be dangerous to equate path dependency with fatalism over Mekong mainstream dams.

However, the loadings are not showing up off the reaches of the navigation system above the locks and dams.

Generally, the influence of the stress state on the seepage field was not considered in the seepage analysis for the embankment dams.

The method of spontaneous electric field can be used to detect seepage channels, fracture zone and groundwater flow in dams.

Dams are used to control flooding, provide water for irrigation, and generating electricity for the surrounding area.

The Olympic National Park then enveloped Glines Canyon Dam in 1938, even though it was illegal for dams to be located in national parks.

Environmentalists want to increase the amount of water flowing downstream to help restore ecosystems damaged by the dams.

In spite of a water- sharing agreement , China has continued building dams and irrigation projects on the upper stream of the Brahmaputra .

The author uses the multi-axle strength criterion, which can bitterly reflect true working state of the arch dams.

From the perspective of biodiversity, these ugly dams need to be dismantled and the natural features of the watercourse need to be revived.

Apart from its nuclear-energy investments, China is also constructing dams, building infrastructure and exploring for precious metals.

Irvin of American Rivers and other supporters hope the dams' removal will spur other projects around the country.

But although large-scale plants have impacts, small hydro systems have no need for large dams, roads and other major infrastructure.

It was in this phase that the great steel plants, hydroelectric dams and highways were built under the Five-Year Plans.

Comparing with double dams, the tundish fixed with baffles has a similar minimum residence time, but a less dead volume.

Since 1999, more than 145 dams have been demolished in the United States and the movement is growing, with 60 of them coming down in 2004-5.

Fences and dams might also force some animals to stop migrating, which could increase the prevalence of pathogens in the population.

It has begun to "consult" , after a fashion, the lower riparian states affected when it dams its rivers, such as the Mekong and the Salween.

It has shifted its focus from internal to international rivers, and graduated from building large dams to building mega-dams.

But as for the seepage calculation of these dams, there is not any accurate theoretical formula.

Huge dams halt the flow of the water, which can turn turbines and generate electricity for people.

This causes siltation of valleys and dams, and is increasingly threatening the environment of the area.

This causes siltation of valleys and dams, and is increasingly threatening the environment of the area.

The report said Yunnan relies heavily on hydropower, and a drought has left dams with very low water levels.

A linear programming model for the shape optimization of arch dams is established to minimize the maximal tensile stress of the arch dam.

The impact of the roller compacted joints to the RCC arch dam is a important item contained in the RCC theory of building dams.

Salmon once thrived here, but over the years dams, overfishing and habitat destruction have diminished their numbers.

Officials point out that opponents of the dams have failed to propose a feasible alternative.

Flows may also get less regular, especially if glacial dams form, withholding water, and then collapse, causing floods.

Most of these arch dams lie in the southwest where the earthquake intensity is high.

An interesting ecotourism industry has been developing in the area lately, which would be damaged by the dams.

Those other countries also lack the money or political ability to build dams and reservoirs as quickly as China has.

Cracks development and change in concrete dams will directly affect the dam's strength and overall structural characteristics.

Rich countries build sewers, drains, dams, reservoirs, flood defences, irrigation canals and barrages to avoid such problems.

Salmons once thrive here, but over the years, dams, over-fishing and habitat destruction has diminished their number.

China is investing billions in their infrastructure. From dams, roads, rail, air and sea ports as well as their military.

EVEN in today's more environmentally conscious times, hydroelectric dams are often unwelcome.

Its network of dams has boosted farm productivity and raised living standards across the region.

It is close to the Columbia River, with dams that produce plenty of cheap hydroelectric power.

Daniel Beard is one of the world's leading experts on water technology and large dams.

Blue catfish are the focus of many urban legends, mostly stories of huge catfish below dams.

Dams fell out of favor as their environmental consequences became clearer.

With others, he killed proposals to build giant dams on the Salween river and in one of the most spectacular gorges of the Yangzi.

Dams in Africa have meant fewer fish, less grazing and less floodplain agriculture--none of which were anticipated.

The distribution of moisture content in earth dams is an important factor influencing the stress and stability of dams.

And if building dams has gone out of fashion, so has spending on public works with borrowed money.

Salmon once thrivedyears (here), but over the years the damn( dams ), overfishing, and habitat destruction have diminished their number.

But only now are some of the dams of the colonial era being restored to use, after years of neglect and silting up.

In the prophase , the project will construct two dams to hold back debris flow in the upstream and two sluice dams in the downstream.

Barramundi Where: tropical freshwater rivers and estuaries, inshore reefs, tropical freshwater dams.

Currently, several upstream nations, including Ethiopia and Uganda, are planning hydroelectric dams.

Using tiltmeter arrays and GPS technology for continuous real-time monitoring of dams is an advanced method.

The dam is a key element of the Brazilian government's growth plan, and one of 100 large dams planned in the Amazon.

Through recovering the sand, the closed dams can be reclaimed to totally eliminate the risks and keep safety.

But greens vehemently oppose the building of more dams and transmission lines in the country's beautiful, rain-drenched south.

Geotextiles and geotextile-related products - Characteristics required for use in the construction of reservoirs and dams.

Based in Nairobi Kenya, our company is a leader in water engineering projects like boreholes, dams, water pans, pipelines, and irrigation.

Ideal path for salmon swimming upstream to spawning grounds, the Vyvenka River loops through a floodplain free of roads and dams.

India worries that China is throwing up huge dams in Tibet that might divert water from rivers flowing over the border.

What's more, global warming, dams and pollution have taken a heavy toll on eel populations in North America and Europe.

water power schemes ( hydroelectric schemes ) are of two types , high dams and low dams.

Galea also has been studying new nerve growth in the hippocampus, both in pregnant rats and in rat mothers, known as dams.

Most of the money is set to go to infrastructure projects, like roads and dams, that pump money quickly into the economy.

It would be mutually beneficial to pursue the use of micro-hydro rather than large scale dams.

The analysis of the seepage in tailings dams is a complicated question for coupling seepage-consolidation.

Not a few were expelled from their traditional territories to make room for highways, dams and cattle ranches .

Ports, airlines, highways, mines, dams, factories, warehouses, government buildings and cinemas have all gone on the block.

For downstream of homogeneous dams, damages caused by rain scouring, storm, ice, stream, animal, swelling, and mud crack must be avoided.

China, which borders northern Laos, already operates four dams on the upper reaches of the Mekong River.

Another important expression in calculations for ground water and dams is "drawdown" .

applied in the basement, wharf, DAMS, tunnels, Bridges, and pools, towers etc concrete, reinforced concrete, mass concrete, etc.

Intermittent showers pushed up water levels to record highs in two dams in Leizhou yesterday.

Therefore, to reduce environmental risks, drains and holding-water dams should be constructed.

The Commission issued its report on dams in late 2000, with a less than favorable view of existing dams .

FIFTY MILLION TONS OF EARTH AND ROCK WERE EXCAVATED AND TWO TEMPORARY DAMS WERE CONSTRUCTED TO HOLD THE RIVER AT BAY.

Reports yesterday emerged that state-owned China Development Bank, which funds dams, airports and bridges, was considering a bid.

The results of monitoring have served as a guarantee for safety operation of the dams.

In a world ruled by a giant beaver, mankind builds many dams to please the beaver overlord.

Environmental and rights organizations in Thailand say dams on waterways in southern China contribute to the river's low levels.

They travel extensively to other parts of China to help out as needed on large projects such as dams, canals, and bridges.

Engineering structures falling in this category are gravity dams with foundations, slopes and embankments , etc.

The reinforcement technology is widely used in rock-fill dams in high seismic hazard zones.

And the retaining sediment abilities of burst soil-retaining dams doesn't stop at once, but it has certain hysteresis.

The Inga I and II dams on the Congo river have generated a fraction of the power they were meant to.

They built small dams made of stones to stem rain run-off and to prevent precious topsoil from being washed away.

The more precise computationdebris for tailings dams' seepage field to be allowed debris dams' security.

However, managers did oppose certain major intrusions -- railroads, dams, and reservoirs.

"Unfortunately, we see very little effort to avoid ecological or social impacts in the planning for new dams, " Richter said.

Western developed countries dispute between the pros and cons of down and on the dams, which have also aroused extensive attention in China.

Critics said several smaller dams could have prevented floods better and left a smaller footprint.

Many Ethiopians would be happy to have a few dams.

Earthquakes cause severe casualties and destroy constructions like building, dams and bridges.

Some dams will be in Peruvian and Bolivia parts of the jungle.

After all, Myitsone is just one of seven dams planned for the upper Irrawaddy.

i walked along one of the dams for over 100 meters , at its end i saw this stake boat.

We also need to deal with dams that prevent the free exchange of life from the sea to inland waterways.

But Africa's rain falls more variably than, say, Norway's, and its dams often operate below capacity.

The direct internal force method of equivalent normal stress analysis for the base surfaces of arch dams is presented in this paper.

They claim that China's management of a series of dams on the Lancang has aggravated the unfolding crisis.

The act of civil construction and engineering includes bridges, roads, canals, airports, dams and buildings.

When people think of the Netherlands, a low lying country with numerous dams, tulips and clogs come to mind.

The integral safety of high arch dams mainly depends on the stability of supporting rock system.

This town is a fly-fishing mecca with its numerous lakes and dams.

They fear the catastrophe could get worse, as dams along the Danube are in danger of breaking.

Flood protection demands embankments, or dams, or protected flood plains, or houses that rise and fall with the waters.

Jobs that rebuild our crumbling roads, bridges and levees and dams, so that the tragedies of New Orleans and Minneapolis never happen again.

Atheist though he was, he saw the Narmada as a goddess whose beauty should be decorated only with micro-dams on a human scale.

The work of repairing our crumbling roads and bridges, and our dangerously deficient dams and levees.

'engineering methods', which involve the construction of terraces on hill slopes and check dams across gullies.

Very large dams have also been known to trigger earthquakes because of their weight pressing down on the earth's crust.

Green groups are mobilising against the proposed hydroelectric dams.

About two million people in northern Nigeria have been displaced after authorities opened the floodgates on two dams, an official says.

For earth and rock dams, there must be protection upstream and downstream.

Cracks will appear during construction and operation period in the weak old-new concrete interfaces on heightened dams.

The Thai media has helped stir up emotions; one editorial in the Bangkok Post last month was headlined "China's dams killing Mekong. "

Pooled amid the system of trenches and dams created in Satichiwadi, rainwater soaks slowly into the ground.

The optimization of arch dams is complex because its objective function and constraint conditions are non-linear.

It reduces damage from heavy rains. And vetiver planted on earthen dams may strengthen them against breaks and flooding.

But many countries continue to build massive dams and irrigation systems, even though such projects can create more problems than they fix.

China's construction of dams also raises the prospect of a race with India to develop hydropower along south Asia's most important river.

This paper analyzes the disciplines of dams level displacement changes with vertical monitoring data of the Lijiaxia arch dam.

The research method adopted in the paper has a reference for analysis and evaluation of similar tailing dams' stabilities.

Alexander Korneev, an analyst at Citibank, worries that the firm will squander its earnings by spending too much on new dams.

Such landslides also block the flow of water, causing natural dams to form, which later can breach or overflow.

Hydrologists fear that the severity of the drought has encouraged farmers to build more dams.

The state's chief minister, Omar Abdullah, says dams will add an extra 3, 000MW to the grid in the next eight years alone.

The removal of two dams on the Elwha River will help restore once abundant salmon runs.

A new total stress method and test method are presented to simulate consolidation degree of core in rock-fill dams.

prevent, destroy or control harmful organisms which cause danger to dikes and dams, railroads, airports, buildings and other places.

Environmentalists say dams have already damaged the Mekong River's headwaters within China's borders.

For core walls of high dams, its compressibility must be relative low.

Those walks were high adventure for me: rocks to skip, birds to watch, dams to build, animal tracks to follow.

Strengthen superficial insulation of concrete dams to terminate the history of "on dam without cracks"

This river was only recently made accessible to riverboat traffic by a new series of dams and locks.

The dams on the upper reaches of rivers and river tributaries are less damaging than MAINSTREAM .

Very little in the way of increased leakage has occurred in concrete dams subjected to major earthquakes.

Officials are worried about damage to dams upriver from Dujiangyan, closer to the epicentre.

The Application of Detecting the Hidden Defect in Dams with "Pseudorandom Flowing field Method"

Occupy Wall Street offers impressive sex kits which include condoms, dental dams, lube and finger cots.

They build the roads, bridges, dams, ports and railways that China needs to sustain its rapid economic growth.

Dams and waterworks have been provided to improve irrigation.

To get even more power out of the flowing water, the government started building dams.

road kerbs and slabs, dams and reservoirs are very susceptible to frost action.

Meanwhile, the government's principal planning department said last night 391 dams had been damaged by the earthquake.

Another is that China supports dams and is a generous benefactor to the elected but dictatorial government of Hun Sen, the prime minister.

New Dams in Belize, Iceland, Laos Destroying Water Sources and Damaging Economies, Group Says.

Lao officials say the proposed Mekong dams would cut poverty and bolster their land-locked country's economy.

fish diverter An electrical device that prevents fish from entering sensitive areas, e. g. power dams.

In June 2003 a consortium led by China Huadian power company announced plans to build 13 dams along the main stem of the Nu.

They include ancillary structures for dams, spillways , and channels.

Otter builds not dams, but plays amongst the seaweed harvesting shellfish for sustenance.

Dams are a source of "significant bilateral tension" , the report concludes.

Who's to say the floods their dams create won't swamp Glasgow?

Bridges, highways, dams, levees, tunnels, airports, canals, and other large structures are rooted in the knowledge of this field.

Meanwhile, rolling blackouts have hit central and southern China as many of the dams on the river are operating below capacity.

A vibroflotation method of strengthening sand shell of dams against earthquake is presented in this paper.

The lesson from dams is that big is not always beautiful.

The work, he adds, could help explain why caves sometimes form faster than expected beneath dams.

This has important implications for the future design of offices towers, hydroelectric dams, and nuclear power facilities.

"We should learn from the lesson of Sanmenxia and consider the long-term influence of dams rather than the short-term benefits. "

Bankers once played a useful role in financing long-term capital projects like roads, dams, bridges.

He avoided glamour assignments, speaking in the Senate on workaday topics like highways and dams.

The Min River and its tributaries have 30 dams upstream from Dujiangyan and 16 incurred significant damage from the recent earthquake.

Therefore it is necessary to take reinforcement measures on the upper part of high earth-rockfill dams in earthquake region.

The author discussed the stability of arch dams against up slide alone the inclined dam foundation.

The same hand of government that built dams to produce power and limit floods also uprooted thousands of people from their farms.

A method to curb greenhouse gas emissions from large hydroelectric dams has been developed by scientists in Brazil.

By court order two dams along the creek were removed earlier this year.

For this reason, it is advantageous to build dams as high as possible to produce the maximum electrical energy.

The initial act spared eight rivers and narrow buffer zones around them from dams and development.

Little dams on farms, which block small streams or trap run-off from rain or flooding, are an even bigger worry.

The hydroelectric dams in this area provide Vega's island fortress with almost limitless power.

Seismic monitoring also adds to the database of knowledge of how dams perform under seismic loading, making future designs safer.

On the infinite deep pervious foundation, the earth - rockfill dams often take the hanging vertical cut -off wall to control the seepage.

This change is similar to the longitudinal change of sediment thickness in the gully with dams.

The paper introduces the gouting construction course and technics combining subsidiary dams reinforcing project of Longhekou reservoir.

To explore the effect of prestressing forces on the seismic behaviors of arch dams, a set of model tests on shaking table were carried out.

The sand dike that contains it is by volume one of the largest dams in the world.

China's water minister (Chen Lei) says there are major safety issues with dams, reservoirs, and hydropower stations in the earthquake zone.

That pollution, along with dams and heavy boat traffic, has caused a dramatic decline in the Yangtze's aquatic life.

By building dams on rivers, Americans have harnessed the power of water.

And vetiver planted on earthen dams may strengthen them against breaks and flooding.