巨厚砂岩层组综采工作面强矿压显现机理研究  

Study on Mechanism of Strong Strata Pressure in Fully Mechanized Mining Face of Huge Thick Sandstone Formation

作　　者：张翔 吕玉磊 尹中凯 张寅 韩刚 王爱文[4] ZHANG Xiang;LYU Yulei;YIN Zhongkai;ZHANG Yin;HAN Gang;WANG Aiwen(Institute of Scouring Prevention and Water Control,China Coal Energy Research Institute Limited,Xi'an 710054,China;Wushen Banner Mengda Mining Co.,Ltd.,Ordos 017200,China;Shandong New Julong Energy Co.,Ltd.,Heze 274918,China;College of Mechanics and Engineering,Liaoning University of Engineering and Technology,Fuxin 123000,China)

机构地区：[1]中煤能源研究院有限责任公司防冲控水研究所,陕西西安710054 [2]乌审旗蒙大矿业有限责任公司,内蒙古鄂尔多斯017200 [3]山东新巨龙能源有限责任公司,山东菏泽274918 [4]辽宁工程技术大学力学与工程学院,辽宁阜新123000

出　　处：《煤矿安全》2020年第3期194-199,共6页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51974150)。

摘　　要：以纳林河二号井31102工作面回风巷强矿压显现为背景,采用理论分析、现场实测等方法,对巨厚砂岩层组综采工作面强矿压显现机理进行研究。研究表明:31102工作面进入双工作面见方阶段时,采场覆岩结构为标准的载荷"三带"结构;基于31102工作面双见方阶段覆岩结构,建立了走向支承压力估算力学模型,得出双见方阶段31102工作面超前42.69~215.67 m范围达到发生冲击地压的应力条件;中等冲击危险范围为57.47~137.02 m,该范围"DLZ"传递的高应力为双见方阶段31102沿空巷强矿压显现的主要原因。31102回风巷强矿压控制机理为:确定合理的卸压参数,通过大直径钻孔释放煤体积聚能量,同时尽量减少对围岩结构的破坏,确保巷道围岩处于"低应力-低扰动"状态。Based on the strong pressure of the returning airway in 31102 working face of Nalinhe No.2 well,the theoretical analysis and on-site measurement are used to study the mechanism of strong mine pressure in the fully mechanized mining face of the thick sandstone layer.The research shows that when the 31102 working face enters the double working face squares,the overburden structure of the stope is the standard load three zones structure;based on the double-sided stratum structure of 31102 working face,the mechanical model of the strike bearing pressure is established and the double is obtained.It is concluded that the working face of stage 31102 in double squares is 42.69 m to 215.67 m ahead to reach the stress condition of rock burst;the medium impact hazard range is 57.47 m to 137.02 m,the high stress transmitted by the range"DLZ"in the double squares phase31102 along the empty roadway is the main reason for the strong occurrence of mine pressure.The strong control mechanism of the 31102 return airway is:to determine the reasonable pressure relief parameters,to release the coal volumetric energy through the large diameter borehole,and minimize the damage to the surrounding rock structure to ensure that the surrounding rock of the roadway is in"low stress-low disturbance"status.

关 键 词：巨厚砂岩层组 覆岩空间结构 载荷“三带” 应力分布 微震 

分 类 号：TD324[矿业工程—矿井建设]