采矿与安全工程学报Issue(3)：369-375,7.DOI:10.13545/j.cnki.jmse.2015.03.004
深井宽条带开采煤柱稳定性及地表移动特征研究
Coal pillar stability and surface movement characteristics of deep wide strip pillar mining
摘要
Abstract
Coal pillar stability and surface movement characteristics of wide strip pillar mining in deep mine have been researched by using field measurement, three-dimensional similar material simulation, numerical simulation and theoretical analysis. Researches show that under the mining conditions of deep mine, the width of plastic zone becomes larger significantly and load bearing above the whole coal pillar in deep mine is saddle-shaped;The lateral deformation is discontinuous, stepped and mutational, which is focused on the edge 9.5 m away from the coal wall. With the diminution of coal pillar’s width, the width of plastic zone increases notably. In addition, surface subsidence reaches extremum under this geological and mining condition in group strip coal pillar mining. The subsidence basin is larger but gentler and uniform. The subsidence coefficient is 0.22 and the movement and deformation is conti-nuous and long-term. Outer edge of subsidence basin appears surface rebound. Based on the characte-ristics of deep wide strip pillar mining, the dimensional design method has been put forward.关键词
深部矿井/宽条带法开采/煤柱稳定性/地表移动特征Key words
deep mine/wide strip pillar mining/coal pillar stability/surface movement characteristics分类
矿业与冶金引用本文复制引用
郭惟嘉,王海龙,刘增平..深井宽条带开采煤柱稳定性及地表移动特征研究[J].采矿与安全工程学报,2015,(3):369-375,7.基金项目
国家自然科学基金项目(51274132，U1361105，51104094)；山东省自然科学基金重点项目(ZR2013EEZ001) （51274132，U1361105，51104094）
