急斜煤层大段高开采采空场围岩稳定性  

Stability research of surrounding rock at gob area using large section mining in steep seam

作　　者：邵小平[1] 石平五[1] 

机构地区：[1]西安科技大学能源学院 教育部西部矿山开采及灾害治理重点实验室,陕西西安710054

出　　处：《辽宁工程技术大学学报（自然科学版）》2010年第3期353-356,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(50274058);高等学校博士点专项基金资助项目(20040704002)

摘　　要：为了研究急斜煤层大段高开采采空场围岩的稳定性,利用相似模拟及理论分析,对急斜煤层大段高开采过程中的矿压显现特征及围岩变形规律进行了深入研究。结果表明:大段高开采条件下,支架的工作阻力并没有随着采深与段高的增加而大幅增加,工作面支架会受到其上方临时结构的保护。充填体沿槽形采空区域下移过程中对顶板岩层的结构支撑作用,有助于形成工作面上方暂时稳定的结构,控制顶底板的运动,有效降低工作面大范围悬空后顶板大范围垮落可能形成的灾害。该成果对于乌鲁木齐矿区及赋存有类似地质特征矿区急斜煤层的安全高效开采有积极的指导意义。In order to study stability of surrounding rock at gob area using large section mining in steep seam, this paper has made a depth research about action of the filling body to surrounding rocks characteristics of strata behavior using similarity simulation and theoretical analysis. The result shows that working face has obvious period strata behavior along strike, but support resistance don’t increase with increasing of mining depth and section height, which indicates that support will be protected by overhead provisional structure along strike. The issues have certain guiding significance for horizontal section top-coal caving in Urumqi coal mine, and reference significance to similar coal mine.

关 键 词：水平分段放顶煤 大段高开采 矿压显现 槽形采空区 黄土充填体 大范围垮落 

分 类 号：TD315[矿业工程—矿井建设]