深井采场底板岩层移动观测与位移反分析  

Observation of Strata Movement and Back Analysis of Displacements in the Coal Floor of a Deep Mine

作　　者：高延法[1] 肖洪天[1] 张文泉[1] 

机构地区：[1]山东矿业学院,泰安271019

出　　处：《岩土工程学报》1992年第A09期106-112,共7页Chinese Journal of Geotechnical Engineering

摘　　要：为研究采煤造成的采场底板岩层变形与破坏状况,在采深近千米的深井采场进行了大范围、长时期的底板岩层移动、超前支承压力和底板岩层渗透性等多项观测。根据位移实测资料和原始地应力实测统计资料,采用位移反分析方法,反求出了岩体的弹性模量和支承压力,得出岩体的弹模是其对应岩石试件室内测试弹模的0.445倍,超前支承压力是垂向原始地应力的1.7倍。本文还探讨了底板岩层的应力分布和开采造成的底板岩层扰动范围。Observations have been made for a long time and in a wide range on deformation and failure of floor strata of deep tunnels. Floor strata movement, front abutment stress and floor rock osmosis were observed. Based on data of displacement observed and statistical data of in-situ rock stress, back analysis of displacements is made to obtain the elastic moduli of rock mass and the abutment stress. It was found that the elastic modulus of the rock mass is 0.445 times the data from laboratory test of its sample and the front abutment stress is 1.7 times the stress in-situ rock mass in the vertical direction. Stress distribution of the floor rock mass and the range of disturbance in floor rock affected by mining are discussed.

关 键 词：岩层移动 采场 底板 位移 

分 类 号：TD325.1[矿业工程—矿井建设]