条采沉陷计算的空间分层介质力学法

本文把条带开采工程岩体介质简化为具有开挖孔洞的分层各向同性线弹性空间体，不仅考虑了上覆岩体，而且考虑了煤柱和下伏岩体对岩层和地表移动的影响，给出了适合于条带开采的应力边界条件和垂直位移连续而水平位移可不连续的层间几何接触条件，导出了条带开采岩层与地表移动的计算公式。利用本文给出的空间分层介质力学法，不仅可以计算地表和岩层内部的移动变形，包括水平变形和垂直变形，而且可以探讨条带开采亟待解决的其它理论问题。

The Mechanical Method Calculating Ground Movement in Three-dimensional Discrete Layer Media

This paper simplifies the engincering rock mass in strip mining as the discrete media in which stratum exhibits isotropism and linear elasticity, and there are serial mining holes.It can be analysed that the effects on strata and ground movement result not only from rock mass above seam,but aiso from coal pillar and rock mass below seam.The paper gives the stress boundary condition and the geometric touch condition that the vertical displacement continues,but the transversal displacements do not continue in strip mining,then deduces the fonnulae calculating strata and ground movement.Making use of the mechanical method in three-dimensional discrete layer media, which is introduced in this paper,we can not only calculate the displacement and deformation on ground and in strata,but also study other the-oretical problems demanding prompt solution.