岩层移动对瓦斯抽放钻孔的破坏研究  

Study of Methane Drainage Borehole Destruction Induced by Rock Strata Movement

作　　者：沈健 金洪伟[2] 许家林[3] 

机构地区：[1]山东省徐庄生建煤矿,山东滕州277500 [2]煤炭科学研究总院重庆研究院,重庆400037 [3]中国矿业大学矿业工程学院,江苏徐州221008

出　　处：《煤矿安全》2010年第3期1-4,9,共5页Safety in Coal Mines

基　　金：国家重点基础研究发展计划资助项目(2005CB221503);国家自然科学基金重点资助项目(50534080)

摘　　要：煤层开采引起的岩层移动可能对卸压瓦斯抽放钻孔造成严重的破坏,并进而对瓦斯抽放工作造成不利的影响。基于煤层开采后的岩层移动规律,深入研究了卸压瓦斯抽放钻孔在采动影响下可能的破坏形式及力学分析,各种形式破坏可能发生的时间、位置和可能性,以及针对各种破坏的钻孔强度计算方法。Rock strata movement induced by coal mining can do severe destruction to pressure relieved methane drainage boreholes,consequently an adverse effect is brought about to methane drainage work.Based on the rule of strata movement,the following problems is deeply studied in this thesis：the possible mining-induced destruction forms and their mechanical analysis of borehole,the occurring time,position,and possibility of all kinds of these destruction forms,and the calculation methods of the failure strength of borehole to most kinds of destruction.

关 键 词：岩层移动 瓦斯抽放 钻孔破坏 

分 类 号：TD712.6[矿业工程—矿井通风与安全]