沿空巷道实体煤壁倾覆片帮机理及防控技术  

Mechanism and Prevention and Control Technology of Overturning Slicing of Solid Coal Wall in Gob-side Roadway

作　　者：史之印 蔡先锋 李阿涛 赵刚 SHI Zhiyin;CAI Xianfeng;LI Atao;ZHAO Gang(Shirausu Coal Mine,Inner Mongolia Haosheng Coal Industry Co.,Ltd.,Ordos 017200,China;School of Mining and Geomatics Engineering,Hebei University of Engineering,Handan 056038,China;Coal Brust Prevention and Control Research Center,Shandong Energy Group Co.,Ltd.,Jinan 250014,China)

机构地区：[1]内蒙古昊盛煤业有限公司石拉乌素煤矿,内蒙古鄂尔多斯017200 [2]河北工程大学矿业与测绘工程学院,河北邯郸056038 [3]山东能源集团有限公司冲击地压防治研究中心,济南250014

出　　处：《煤炭技术》2022年第9期45-48,共4页Coal Technology

基　　金：国家自然科学基金资助项目(52104081)。

摘　　要：对于采煤工作面沿空巷道实体侧煤壁发生倾覆片帮的现象,总结煤壁倾覆片帮的特点,分析煤壁倾覆片帮的发生机理。分析认为煤壁倾覆片帮是在侧向支承压力和超前支承压力共同作用下,煤体受张拉应力作用,产生竖向裂隙,特别是当巷道肩部存在煤岩结合等弱面时,煤体所受约束减少,易发生煤壁倾覆片帮。提高煤壁的支护强度,减小煤壁应力条件,可有效降低发生煤壁倾覆片帮的风险。For the phenomenon of coal wall overturning in the solid side of the gob-side roadway in the coal face,the characteristics of coal wall overturning and the mechanism of coal wall overturning are summarized.The analysis shows that the coal wall overturning spline is caused by vertical cracks under the action of tensile stress under the joint action of lateral abutment pressure and advance abutment pressure.Especially when there is a weak surface such as a coal-rock combination at the shoulder of the roadway,the coal body is less constrained and the coal wall overturning spline is easy to occur.Increasing the supporting strength of the coal wall and reducing the stress condition of the coal wall can effectively reduce the risk of the coal wall overturning.

关 键 词：机理 煤壁倾覆片帮 沿空巷道 防控技术 

分 类 号：TD353[矿业工程—矿井建设]