不稳定煤层开拓部署和巷道布置初探

Preliminary Study of Calculation on Surface Movement Caused by Water Lossing in Aquifer

本文从勘探程度井型和开拓方式、采煤方法等几方面探讨了不稳定煤层的开采问题。

-A case ot a surface with over 1 subsidence data caused by coal minings under a special thick alluvium with rich water could not be reasonably expressed by a present theory of rock movement. Base on a theory of engineering geology, theories of hydrogelogy and rock movement and the information home and abroad, this paper has analyzed and classified the cases of reck movement caused by water lossing in aquifers. At assumed conditions, a preliminary study on a moving mechanism of a water lossing stratum with sink holes. A theoratic expression is given to a case of a surface with over 1 subsidence data in the paper. A method of calculation for surface move ment has been approved by inferences. The preliminary study and analyses have peactical interests in coal minings under a special thick alluvium in North China and East China area.