基于切顶卸压的钢管混凝土沿空留巷技术  

Gob Side Entry Retaining Technology by Concrete Filled Steel Tube Based on Roof Cutting Pressure Relief

作　　者：潘海兵 李春睿[2] 王东攀[2] 刘前进[2] 

机构地区：[1]山西霍尔辛赫煤业有限责任公司,山西长治046000 [2]天地科技股份有限公司开采设计事业部,北京100013

出　　处：《煤炭技术》2017年第8期12-15,共4页Coal Technology

基　　金：国家安全生产监督管理总局2016年破解安全生产难题科技攻关项目(2016PJNT01);国家自然科学基金项目(51474128;51304118);国家重点研发计划项目(2016YFC0600708)

摘　　要：霍尔辛赫煤矿在450 m埋深、5.9 m厚煤层综放工作面成功实现了"深孔爆破切顶卸压+钢管混凝土立柱巷旁支护"的沿空留巷技术,为深部开采、高地应力、厚煤层采场沿空留巷提供了一种经济、可行的方式。通过数值模拟确定了该条件下深孔爆破切顶卸压合理的切顶高度为20 m,根据煤柱应力实测结果得出,切顶卸压后可使煤柱应力集中程度降低约80%。Huoerxinhe coal mine successfully tested a gob-side entry retaining technology of ＂roof cutting pressure relief by deep hole blasting ＋ concrete filled steel tubular column as roadside supporting＂ in coal caving face of 450 m buried depth and 5.9 m thick coal seam,which provided an economic and feasible way for gob-side entry retaining in deep mining with the high stress and thick coal seam mining.According to the numerical simulation, it is concluded that the reasonable cutting height is 20 m in this condition.According to the measured results of the coal pillar stress, the stress concentration of the coal pillar is reduced by 80% after roof cutting pressure relief.

关 键 词：深孔爆破 切顶卸压 沿空留巷 

分 类 号：TD353[矿业工程—矿井建设]