This kind of strata is distributed widely in the Quaternary overburdenlayer of mountain riverbeds and mountain sloping field.
这类地层广泛存在于山区河床,山前坡地等第四系覆盖层中。
2
The collapse of overburdenlayer and land surface due to underground mining is one kind of environmental hazards induced by human being.
采矿区覆岩及地表塌陷是涉及全球性人为环境灾害之一。
3
It is indicated that the characteristics of overburdenlayer, development degree of karst and activities of groundwater have important influence on the formation of karst collapse.