煤岩体强度与面长对承压开采底板的影响  

Influence of Coal and Rock Intensity and Working Face Length on Coal Seam Floor in Mining

作　　者：杨阳[1] 刘树新[1] 

机构地区：[1]内蒙古科技大学矿业研究院,内蒙古包头014010

出　　处：《煤炭技术》2016年第10期78-80,共3页Coal Technology

基　　金：国家自然科学基金项目(51264028);内蒙古自治区高等学校科学研究项目(NJZY11147);内蒙古科技大学产学研合作培育基金项目(PY-201212)

摘　　要：结合矿山典型工作面开采技术条件,把顶板岩层、煤层和底板岩层作为一个整体进行综合研究,考虑三者之间的作用与影响,利用弹性薄板和岩石力学理论,对老顶初次来压、周期来压、煤岩体强度参数降低等情况下工作面煤层底板岩层破坏深度的理论值进行了计算,得出了工作面长度和煤层底板岩层破坏深度之间的关系,定量地分析了工作面长度与煤岩体强度参数对煤层底板破坏深度的影响,为承压水开采下增加面长提供了理论依据。Combined with a typical working face mining condition,researched the roof strata,coal seam and floor strata as a whole,and considered the interaction and influence among.By using elastic and thin board and rock mechanics theory and considering the cases of the first weigh of main roof, decrease of coal and rock mass intensity parameters,calculated ting and periodic damage depth of weighting coal floor strata value, and obtained the relationship between the length of working face and the depth of destruction of coal floor strata.The influence of working face length and intensity parameters of coal and rock has been analyzed quantitatively on the depth of damage of coal seam floor,and provides a theoretical basis to increase the confined water in mining face.

关 键 词：煤岩体强度 面长 承压开采 底板 

分 类 号：TD32[矿业工程—矿井建设]