rock mass

The technical route and preconditions deducing the damage evolution law of a rock mass are put up from that of the rock sample.

Therefore, the rock mass for the cavern is of good rock mechanical performance and a good pressure-cavern place.

The mining subsidence mechanism of metal mine with fractured blocky rock mass is different from that of coal mine with layered rock mass.

As a significant method for rock mass slope analysis, Block Theory has been used far and wide in engineering field.

The mechanical behavior of rock mass under unloading is different from that of rock mass under loading.

In engineering rock mechanics, rock mass classification is one of the important assistant approaches to engineering design.

The rock mass on the surface looked like a container for making tea.

The stress appearance of each measurement point is relevant with the tectonics, rock mass structure and lithology.

By the means of quantitative and qualitative methods, the weathering rock mass of dam foundation of Jin Ling reservoir is zoned.

The rock mass unloading and its transmutative phenomena has been an extrusive problem in the construction of a hydroelectric power station.

the correlation between measured stress and mechanical properties of rock & rock mass result of rock mechanical test is low.

The failure of the rock mass is usually caused by initiation, development, expand, transfixion of the cracks under the external load.

Ultrasonic testing is one of the most frequently used measurements in geotechnical rock mass evaluation.

These methods used to get quantitative rock mass block index are potential reference for the establishment of other criteria.

Surrounding rock tunnel excavation is to have influence on the stability of the tunnel surrounding rock mass.

The acoustic emission system as a technique for the monitoring of stress change in a rock mass has now become mature.

Surrounding rock mass is in a new humidity condition when underground cavern is excavating, which will change mechanical properties.

Jointed rock mass is usually in a compress-shearing stress states because of geology structure influence.

The weathering of rock are zoned in terms of the ratio of wave speed, integrality index of rock mass and rock quality index.

The affecting depth is usually acquired according to the change of permeability in floor rock mass.

The computation result demonstrates that anti-scouring wall and rock mass behind the wall meet stability requirements.

Rock mass structure is the result of formation and reworking during the geological period.

The critical value at bifurcation point of the side slope with bedding rock mass is determined by its bifurcation set.

The stability of rock mass slope is influenced by various factors and the influence degrees of these factors vary with different slopes.

Rock bridge fracture among multi-crack is one of the important reasons for rock mass failure.

The result can also be used to reveal unloading deformation characteristics of rock mass containing a set of joints.

Layered rock mass which is always met in underground engineering has obvious anisotropic mechanical properties.

The influence of vertical seismic action on seismic dynamic failure of jointed rock mass should be considered comprehensively.

The model is of great significance to the analysis of the stress effect on the permeability of rock mass.

In the jointed fractured rock mass, the instability of tunnel is always because the blocks slip along the joint surface.

Due to the lack of GSI index, the two factors were described qualitatively by the study of macro- and micro- characteristics of rock mass.

The evaluation standards for each factor and for slope rock mass quality classification are established simultaneously.

The mechanical behaviour of rock mass around an arbitrary inclined borehole and its coupling with multiphase flow were investigated.

Both the fissure connectivity and density are the important influencing factors of seepage characteristics in fractured rock mass.

The decision of the form of rock mass engineering instability has been an important issue in the rock engineering field.

This paper presents a new technology in which grouting-bolts with controllable grout-density are used to reinforce rock mass.

The stability of the wall rock Were also calculated from the rock and the rock mass strength Parameters respectively.

The laws of interaction between a rock bolt and rocks and the displacements of discontinuous rock mass and a rock bolt were gained.

It reflects the density of discontinuities and controls the mechanical behavior of rock mass in the hat of a large underground excavation.

Wide contribution of layered rock mass cannot be avoided in underground construction.

RQD value, one of the rock quality indices, may become a new and practical way to accurately estimate the strength of broken rock mass.

Fractures in a rock mass can be divided into dominant fracture system and network fracture system.

In both side of Daliushu dam site, so much relaxed rock mass can be found. The earthquake intensity is also very high in this area.

Hydromechanical coupling of jointed rock mass was the key point for problems of hydraulics of rock mass.

The rock quality unit of the rock mass is properly divided according to its decomposition, dissolution and tectonics.

The analysis of joints occurrence in rock mass is an important basic work for mechanical and hydrodynamical behaviors analysis of rock mass.

As an example, the equations are used in the stability analysis and reliability evaluation of the five-plane construction rock mass.

The research results can be used as the theoretical basis and auxiliary means for rock mass accelerative consolidation design.

Rock mass parameters have the properties of structural and random spatial variance, which result in uncertainty of the parameters.

The composite mechanism and deformation process are controlled by the tabular-blocky structure on a faulted rock mass.

Discontinuities or weakness planes are those structural features which separate intact rock blocks within a rock mass.

Most of the joints in the broken dolomite rock mass were originally tight, to the extent that little grout could be injected.

Meanwhile, characters and rules in the data are determined by the rock mass structure, properties and geological environment.

The rock mass mechanics and fractal geometry provide a new approach for the regional prediction of coal structure spatial distribution.

Geologically, the rock mass of the Mogao Grottoes is semi-binder calcirudite of the quaternary sediment of very loose structure.

The approximate relationship between connectivity ratio and connectivity coefficient of fractures in rock mass is proposed.

The coupling mechanical action between filling body and rock mass during filling mining is a process of energy dissipation.

The equivalent permeability tensor of rock mass, which has single set of fractures, is deduced.

The developing conditions of fractures in rock mass operated by the coupling jamming and the single mining excavation were different.

In rock mass hydraulics research, an important issue is the coupled analysis of the rock mass seepage field and temperature field.

The findings can provide some theoretical reference for engineering practice when analyzing the rock mass unloading problems.

The supporting principle of rockbolt under special construction situation is reinforcing the surrounding rock mass.

The rock mass produced by an intrusive process.

Rock mass are always very complex geologic structural bodies , which are composed of various rocks .

Accordingly, a technique for automatic hexahedron mesh of rock-mass with complex structure was realized using multiply mapping mesh.

The conclusion is valuable to the work of excavating in rock mass and maintaining the stability of stope and pillar in mine.

In view of the engineering requirements of broken rock accelerative consolidation, a rock mass integrity classification method is proposed.

Then, a criterion presented before was applied to predicting the splitting failure depth of rock mass.

The practical example of identifying the permeability coefficients of rock mass and concrete curtain is introduced with proposed ANN.

Thus, the basic characteristic of the seepage of mine rock mass slope is the control of seepage by fracture development.

The further excavation of underground powerhouse will affect the stress distribution of system bolts and rock mass near crane girder.

The fault zone and ground water flow's existence change the original temperature field distribution of the rock mass.

The so-called effective trap is namely rock mass in which commercial oil and gas have once accumulated and preserved.

On the basis of evaluation on current analysis methods of anti-slide stability in rock mass engineering, their deficiency are pointed out.

Using horizontal servo testing machine of reversible loading, we performed the experiment of ultra-low friction effect in rock mass.

In the stability analysis of rocky slope, the rock mass is generally abstracted into geologic model, mechanical medel or geometric medel.

All the rock mass of slide part, slide zone and slide bed suffered strong karstification and has complex structure.

These test analysis results provide important basis for revealing changing laws of mechanical parameters of dam zone rock mass.

Stress distribution of the floor rock mass and the range of disturbance in floor rock affected by mining are discussed.

In the end, we discuss and get a general research route to value the rock mass mechanical parameters of dam foundation accurately.

The corrosion depress the rock mass strength, which influence the stabilization and deformation of dam foundation.

The strength characteristics of deep rock mass exhibit distinctly nonlinear response to excavation.

The borehole penetrating method can rapidly and accurately test the uniaxial compressive strength(UCS) of coal and rock mass.

The current fracture models in the calculation of blasting fragment and statistics on jointed rock mass are sued and analysed in the paper.

In this paper, the influences of load on rock mass stress in different geometric conditions of slope are analyzed with numerical method.

Relationship between permeability and stress is the key foundation for coupled seepage-stress analysis of rock mass.

The rock mass with the supporting structure works well with each other utilizing the utmost self-bearing capacity of the rock mass.

Deep rock mass has a typical inhomogeneous and discontinuous self-stressed block-hierarchical structure.

In point of view of the principle of inreversible process, the energy dissipation of rock mass excavation is analysed.

These conclusions provide a new thought for exploring the characteristics of structural plane of rock mass using sing stress wave.

Based on this, rheologic models under different field stress for rock-mass are put forward for the dam area after detailed analysis.

This paper explores movement of ground water in rock mass by numerical simulation and the mechanism of geo-hazards induced by groundwater.

Borehole radar measurement provides the useful information of geological features of extension in the rock mass.

Rock mass is geologic body which composed by the block and discontinuity surface or structural plane.

However, at the same velocity, the grouting pressure will increase with the decrease of the groutability of rock mass.

The charge and its position could influence the damage cumulative rules of rock mass.

This paper describes a new approach to formation of polyhedral rock blocks by intersection of plane discontinuities in the rock mass.

Firstly, slope rock mass was classified by the composite index of rocky slope stability analysis.

The discontinuous model can profoundly describe the post-peak shear localization phenomenon of deep rock mass.

unloading rock mass may appear the phenomenon of serious expansion with the mechanical vibration.

It can be used to value the development of discontinuity and the quality of rock mass. It can also be used for classification of rock mass.

In geotechnical engineering, it is difficult to determine micro-mechanical parameters of large-scale rock mass.

Some problems which are worthy of note during rock mass measurement by the technique are discussed.

A rock mass of large horizontal extent bounded, especially above, by physically different material.

The stability coefficient of the rest of the rock mass with unfavorable structure is more than 1, and higher safety margin.

A large number of micro-cracks exist in coal or rock mass. Its generation and expansion bring about the damage of coal or rock mass.

Simultaneously, the displacements of the rock mass were monitored.

Water inflow in long and large tunnel has intimate relationship with the feature of groundwater and rock mass.

and discuss feature of THM Coupling of Fractured Rock Mass Surrounding Nuclear Waste Repositories.

The coupling meshless method and finite element method for the seepage of the jointed rock mass are developed in the paper.

It gives a new theoretical basis for studying temperature, seepage and stress distribution in rock mass in cold regions.

The experimental results of rock specimens in laboratory are dispersive to identify the property of rock mass.

The laws of ground surface subsidence and rock mass movement in east area of Chenchao iron mine due to underground mining are studied.

The normal supporting principle of rockbolt is improving the balance of stresses of surrounding rock mass.

The rock mass strength parameters around a certain coal mine's center pump house were gained from a new method.

The rheological property of rock has direct relationship with rock mass tensile stress magnitude.

The results are that the fractured rock mass shows the characteristics of brittle failure.

The rock mass parameters have the implication of the matched strength indices of rock mass.

This article emphasizes a prediction of overbreak, the unstable wedge, for openings in jointed rock mass.

The implicit bolt elements are combined in the elements of rock mass, so the mesh generation is extremely simplified.

From the results a quantitative evaluation of the ultrabasic rock mass is performed.

Faults are the low intensity belt in rock mass and can often be activated by excavation.

So macroscopical damage mechanism of rock mass should research through its load and deformation law.

In respect of geology, the key issues refer to the stability of region tectonics and the quality of rock mass for two dam sites.

If the rock mass behaved brittle, splitting cracks would happen on the high side wall of underground caverns.

The results indicate that it is essential to revise the bolt stress by using the formulas when rock mass is in plastic state.

Under low tensile stress, the cracks in rock mass will initiate, grow and coalesce, resulting in the damage of rock mass.

The cutterhead and rock mass characteristics affect the excavation efficiency of full face rock tunnel boring machine (TBM) strongly.

The status of the stresses and strains, and the varieties of the plastic area are simulated in the whole rock mass.

Based on the maximum membership degree criterion of fuzzy mathematics, the rock mass quality of TBM construction could be classified.

In this paper, the principle of gravitational stress transmission in blocky rock mass is researched.

At last, it is simulated that the rock failure modes in excavation with cavity in rock mass considering the coupling.

Block theory for rock mass researches the stability of block which taked form different shape, length, span cutting structural surface.

Also, some methods of identifying dangerous of rock mass project in underground are proposed, which is verified by the actual events.

Rock mass possesses anisotropic properties at different levels.

The application and practice of acoustic emission technology of rock mass was presented in this paper.

The problem of freezing-thawing damage of rock mass involves thermo-hydro-mechanical(THM) coupling at low temperature.

Stability of rock mass in slope engineering is a catholic issue in practical construction.

It is compared with Mohr-Coulomb model provided by FLAC3D and validated for jointed rock mass by a uniaxial compression numerical test.

The function of the rock mass structure is far stronger than the function of the rock material.

Unloading of rock mass owing to human engineering activities is a process of further damage degradation.

Rock pore pressure and fracture pore pressure will fall in oil recovery process. The rock mass shrinks.

The geochemical data shows that the rock mass is similar to post-collision type granite.

This paper research stability reliable degree of the rock mass and soil mass underanchor state.

rock mass structure and rock strength will in the main ensure the rock mass stability.

Therefore, it is extremely vital significant to analyses the influence of layered rock mass on the bearing plate test.

Through the two aspects of geometry and mechanics, stability of rock mass is influenced by discontinuities.

Intact rocks around a roadway could carry more elastic-deformation than jointed rock mass.

Creep characteristics of rock mass discontinuity is very important in solving the practical problems in rock mechanics.

Cleavage and fracture have a strong impact on blasted result for rock mass.

For hard rocks as granite, rock mass class is mostly associated with discontinuities.

To select the appropriate mining methods for the areas of Jiaojia Gold Mine, the stability of rock mass was classified.

And three kinds of spatial data model: Pillar model, TIN face model and section model, were built up for these three kinds of rock-mass.

At last, the rock mass integrity and structure type of typical engineering are analyzed according to discontinuity statistic data.

Rock mass failure identification and analysis of pendulum-type waves ?

Moreover, the loosened rock mass of the steep slope has the overturn risk under seismic load.

It is urgent for us to establish the relationship between the underground structure and surrounding rock mass.

The blasting of slope excavation results in the damage of rock mass consequentially.

Accurate stability classification of surrounding rock mass in tunnel is very important to tunnel engineering design and construction.

Discussion on "Reliability design of grouting for stopping up water in rock mass"

The existence of the weaken surface made the rocks damaged before the rock mass, it will be broken easily.

Firstly, the basic rule of seepage in fissured rock mass and the mechanism of the effect are studied.

There are many reasons of reservoir-induced earthquake, most of them are finally associated with rock mass cranny.

Archaean rocks are rare because the exposed rock mass diminishes markedly with age due to erosion, burial, and subduction.

The water is an important factor to affect the jointed and crannied rock mass slope stability.

Structural plane is an important part of rock mass, and it plays a key role in the process of deformation and damage.

The stability of the abutment rock mass is directly related to the stability of the arch dam.

The result has important guiding sense to the deep high stress rock mass engineering.

Slope rock mass rating system, a convenient method, sees a bright future in the field of highway slope stability evaluation.

The effect of water pressure on rock mass cranny in different states of stress was also discussed.

Tunnel excavation is changing process damaging the initial stress state of rock mass in time and space.

An subregional evaluation is made on destruction fatalness and destructiveness of mountain slope dangerous rock mass and boulder stone.

The shear strength of jointed rock mass under the combined action of shear and tension was determined.

In this paper, structural effects of rock mass creep are studied by using numerical test.

The rock mass of dam foundation of Zaoshi Hydroproject is mainly fine silicarenite with soft layers.

The numerous fissures in rock mass which are call joints in geology form the stone fiture after weathering.

Under seismic state, the slope becomes unstable because the soft-hard lithologic group makes rock mass become more relaxed then before.

In addition, the methods of measuring the temperature of both matrix and rock mass are provided in this paper.

It is shown that the relaxation depth of rock mass at the slope is varied because of the different controlling factors.

This method is useful in the monitoring of damage rock mass excavation.

Rock mass has complex structural hierarchy.

In this paper, fracture network of rock mass is created according to rock mass structure and modem fractal theory.

Then the rock mass deformation modulus is forecast by RMR index.

Also visible is the effect of the weighted average roof rock mass ratings RMR.

It can simulate rock mass materials in a large range. It is an ideal geological mechanics model similar materials.

A three-dimensional model for rock mass failure is proposed based on the self-locking concept in friction analysis.

fractured rock mass slurry a small amount of smoke, the use of grouting cycle.

Presplit blasting mainly affects the upper part of rock mass.

Rock mass Engneering Reaction is the reaction on rock mass by engineering load acted.

The phenomenon of bursting crack of small rock mass is caused by the tensile failure.

The thin mountain intersected by faults and other structural fissures result in low intactness of rock mass.

Rockbursts in coal mines are dynamic failure in the rock mass around a mine opening or excavation. Its mechanism is very complex.

The parameter values of rock mass have a direct bearing on its confining pressure.

and the analysis indicates that the damage effect of the seepage pressure on anchoring jointed rock mass can not be ignored.

The safety factor of concrete crane girder can exceed 3. 7 while the failure of interface between the rock mass and concrete occurs.

It is very important to choose similar material which simulates rock mass correctly in geomechanics model test.

Rock mass is the synthesis of an intact rock and it's joint.

The blasting seismic waves can make the rock mass to be loosened and ruptured, even arouse the sliding failure.

Soft interlayer in rock mass is the most important boundary condition to stability of rock mass.

distortion and destroy of top rock mass form deep relaxed-tension because of karst collapse.

The failured rock mass of Touzhai landslide is permian system nonporphyritic basalt of emei shan basalt.

So the secant modulus from zero stress can not describe the deformation property of the practical rock mass.

At the same time, it is complicated to analyze the stability of underground houses because of the existence of joints in the rock mass.

It is important for reinforcement of surrounding rock mass to study the strength and failure modes of the rock mass with persistent cracks.

A new thought to study the fractured rock mass failure in the interaction of water-rock was suggested.

The study on the mechanics characteristics of rock mass under the shear-compression condition is over ten years.

Stability analysis on surrounding rock mass of underground storage for LPG-Take a real project in Shandong Province as an example

An Analytical Solution of Internal Force and Deformation for Anchorage Length of Abti-slide Pile in Layered Rock Mass

Feasibility study of the prediction for rock mass destabilization by applying rock mass resistivity

The present Situation And Problem on the Sort of Rock Mass

Study of the Mining-induced Dynamic Expansion of Fractured Rock Mass through Physical Simulation

Deformation and strength characterizes simulate study of jointed rock mass under direct shear condition

A study of mathematical model on coupling between temperature-seepage in fractured rock mass surrounding tunnel

The primary study of coupling among seepage-stress-temperature in fractured rock mass in environmental geology

Study and Application of Rock Mass Structure Method in Analysis on Jointed Surrounding Rock Stability of A Tunnel

Comprehensive Test and its Application of Hydrofracturing in the Rock Mass of Pumped Storage Power Station in Qingyuan, Guangdong

Study of Ordered Clustering Procedure in the Quantifying Classification on Weathered Rock Mass

Fracture-damage coupled model of jointed rock mass and its application to stability analysis of large underground caverns

Comprehensive study of the rock mass seepage of east-route sea bottom tunnel works in Xiamen city

Evaluation of the permanent displacement of rock mass slope considering deterioration of slide surface during earthquake

The applicability of the common surrounding rock mass classification methods in a deep buried tunnel

Test and study of the rock mass seepage stability of east-route sea bottom tunnel works in Xiamen city

Study on determining of the mechanical parameters of rock mass used in numerical simulation

Analysis on Internal Forces and Deformations of Surrounding Rock Mass during Excavation of a Large-spanned Tunnel

Analysis of Affecting Factors of Along-Bed Landslide of Rock Mass and Its Stability Under a Rainfall Condition

Study on the deformation law of calcirudite rock mass with a single fracture

Modelling and Application in Back Analysis for the Loosening Zones in the Surrounding Rock Mass of the Underground Powerhouse

Thermal-hydraulic-mechanical coupling constitutive relation of rock mass fracture interconnectivity

Analysis for the selection of mechanical strength parameters of rock mass and its structural planes

Study on catastrophic model with cusp point for failure of stratified rock mass with a gentle inclination

Study of BQ formula in national standard of quantitative classification for basic quality of rock mass

Development in Joints Research and Its Application to Rock Mass Containing Discontinuous Joints

Application of Sample Element Method to Determine the Mechanical Parameters of Blocky Structure Crack Rock Mass

Study of Damage Evolution in Joint Rock Mass Construction Using Time-Variation Mechanics

The Numerical Study of Effective Stresses Law of Rock Mass

Support Design of An Underground Powerhouse Caverns and Stability Analysis on Surrounding Rock Mass

Advances in Researching the Stability Analysis Methods of the Surrounding Rock Mass in Underground Engineering

Mathematical Model for Coupled Seepage and Stress Fields in Rock Mass of Equivalent Continuum by Considering Hydrodynamic Seepage Pressure

Coupling theory of seepage and stress of rock mass and its application in coal mining around water

An Equivalent Model for Jointed Rock Mass with Planar Nonpenetrative Joint and Its Elastic Parameters

Stress Field Analysis on the Rock Mass of the Prestressed Anchor Cable and Its Application

Nonlinear finite-element analysis of tunnel excavation and anchor sprayed concrete lining construction process within hard rock mass

Slope rock mass mechanics strength parameters estimation and its application

Exploration of Rock Mass Disfigurement for a Hydropower Station Dam Site by Acoustic Wave Test

Anisotropy characteristics testing for structure plane of slope rock mass and its stability

Numerical Analysis of Influence of Karst Caves beside the Tunnel on Stability of Its Surrounding Rock Mass

A study of mathematical model coupling seepage field and stress field in fractured rock mass

Effect of Coupling between Rock Mass and Water and Its Influence upon Stability of Rock Slope

The classification of rock mass around tunnel and underground chamber for water conservancy and hydroelectric engineering

Improve Genetic Algorithms and Its Application to Back Analysis of Rock Mass Displacements