多煤层重复采动条件下大巷底鼓破坏规律研究  

Floor Heave Failure Law of Large Roadway under Repeated Mining in Multiple Coal Seams

作　　者：陈立新 付玉平[2] 李川田[2] CHEN Lixin;FU Yuping;LI Chuantian(Shaqu No.1 Coal Mine,Huajin Coking Coal Co.,Ltd.,Lvliang 033306,Shanxi,China;College of Safety and Emergency Management Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,Shanxi,China)

机构地区：[1]华晋焦煤有限责任公司沙曲一号煤矿,山西吕梁033306 [2]太原科技大学安全与应急管理工程学院,山西太原030024

出　　处：《能源与节能》2025年第2期59-63,共5页Energy and Energy Conservation

摘　　要：在多煤层重复采动影响及煤柱集中应力作用下,底板大巷底板变形控制难度极大。针对多煤层重复采动条件下巷道底鼓控制难题,以沙曲一矿+400 m水平大巷为研究背景,采用FLAC^(3D)数值模拟方法,开展了多煤层重复采动条件下大巷底鼓破坏规律的研究。结果表明:1)各煤层开采对底板大巷底鼓的影响不同,2号煤层采动影响较小,3+4号煤层与5号煤层的采动是大巷底鼓变形的主要影响因素,5号煤层开采后大巷底鼓量达到556.78 mm;2)巷道两帮垂直应力峰值随各煤层的开采不断增大,大巷围岩塑性破坏区域范围呈增大趋势。Under the influence of repeated mining in multiple coal seams and the concentrated stress of coal pillars,it is very difficult to control floor deformation in large roadway.Aiming at the problem of floor heave control under the condition of repeated mining in multiple coal seams,taking+400 m horizontal roadway of Shaqu No.1 Coal Mine as the research background,FLAC~(3D )numerical simulation method was used to study the law of floor heave failure in large roadway caused by repeated mining in multiple coal seams.The results showed as follows:1) the mining of different coal seams had different influences on the floo heave of large roadway,the mining movement of No.2 coal seam had little influence,and the mining movement of No.3+4 coa seam and No.5 coal seam was the main influencing factor of the floor heave deformation of the large roadway,and after the mining of No.5 coal seam,the floor heave volume of the large roadway reached 556.78 mm;2) the peak value of vertical stress on the two sides of the roadway increased with the mining of each coal seam,and the plastic failure area of the surrounding rock of the roadway showed an increasing trend.

关 键 词：底鼓 重复采动 多煤层 数值模拟 

分 类 号：TD327.3[矿业工程—矿井建设]