复合顶板窄煤柱沿空掘巷技术探讨  

Discussion on Driving along Goaf with Complex Roof and Narrow Coal Pillar

作　　者：陈淼明[1] 王永[1] 陈志[1] 王洪明[1] 

机构地区：[1]湖南科技大学煤矿安全开采技术湖南省重点实验室,湖南湘潭411201

出　　处：《山西煤炭》2011年第6期22-24,共3页Shanxi Coal

基　　金：国家自然科学基金项目(50874042);湖南科技大学研究生创新基金项目(S090101)资助

摘　　要：阐述了窄煤柱沿空掘巷实质;依据某矿双巷掘进的实际情况,采用岩层控制理论和数值模拟等方法,对某矿复合顶板巷道沿空掘巷技术进行探讨;对窄煤柱沿空掘巷的可行性和煤柱稳定性进行了研究;依据不同宽度的窄煤柱与巷道围岩变形量的关系,确定了合理的窄煤柱宽度。研究结果表明,窄煤柱沿空掘巷的关键是煤柱宽度的合理确定.随着煤柱宽度的加大,顶底板位移量减小,围岩整体变形量呈减小趋势,结合极限平衡理论计算,最终确定窄煤柱的合理宽度为6m。The paper presents narrow coal pillars in driving along goaf.According to the real situation of double roadways driving in one mine,on the basis of strata control theory and numerical simulation,the driving along goaf technology is discussed.The feasibility and stability of the pillars are studied：based on the relation between the pillar＇s width and surrounding rocks＇ deformation,the reasonable width is determined.The findings show that the key to driving along goal with narrow pillars is the pillars＇ width.With the increase of the width,the roof displacement and the surrounding rock deformation decrease.Finally,the reasonable width is determined to be 6m.

关 键 词：复合顶板 窄煤柱 沿空掘巷 锚杆支护 数值模拟 

分 类 号：TD322[矿业工程—矿井建设] TD263