安徽地质Issue(2)：143-145,3.
老采空区重复采动条件下地质稳定性研究
Study of GeoloGiCAl StAbility of AbAndoned GoAf undeR RepeAt mininG
摘要
Abstract
For the geological stability issue with the old goafs of No.4 shaft of the Datong Coalmine that has closed for over 30 years under repeated mining subsidence conditions by small artisanal miners, this paper studied physical and mechanical properties of loose layers by borehole sampling and indoor geotechnical test, conducted a spot measurement of apparent resistivity planar distribution at 50m and 100m burial depths of the study area using transient electromagnetometer, on this basis, divided the study area in view of geological stability. The results indicated that the Quaternary clayey layer is stable in thickness in the Datong wetland unit, poor in water permeability, effectively preventing surface water from feeding groundwater by infiltration. As a result of small artisanal coal mining, depressions are activated in the middle and eastern parts of the study area, which belong to instable areas, and the rest is relatively stable. This research provides a basis for geological environment treatment and eco-system reconstruction in the area.关键词
老采空区/重复采动/地质稳定性Key words
old goafs/repeated mining subsidence/geological stability分类
矿业与冶金引用本文复制引用
谢毫,安士凯,郑刘根,李阳,姜春露..老采空区重复采动条件下地质稳定性研究[J].安徽地质,2014,(2):143-145,3.基金项目
煤矿生态环境保护国家工程实验室科技攻关项目 （）
