近距离煤层群重复上行开采岩移规律初探  

Preliminary Study on Strata Movement Laws in Repeated Upward Mining in Close-distance Coal Seam Group

作　　者：何震 张沛[2] 李卓 闫先龙 He Zhen;Zhang Pei;Li Zhuo;Yan Xianlong(Pingliang Xin’an Coal Industry Co.,Ltd.,Pingliang,Gansu 744200;Energy College of Xi’an University of Science and Technology,Xi’an,Shanxi 710054)

机构地区：[1]平凉新安煤业有限责任公司,甘肃平凉744200 [2]西安科技大学能源学院,陕西西安710054

出　　处：《江西煤炭科技》2024年第4期20-26,共7页Jiangxi Coal Science & Technology

摘　　要：为解决近距离缓斜煤层群受重复采动影响的上行开采可行性问题,根据新安煤矿南区煤层群工程地质情况,综合运用理论分析、物理相似模拟等方法,对2^(-3)号煤下部煤3、煤4、煤5不同顺序开采后2^(-3)号煤的连续性和完整性进行探究,分析煤层群开采后覆岩垮落特征及岩层下沉变形规律,论证煤层群上行开采的技术可行性。研究结果表明,2^(-3)号煤位于下煤层裂隙带范围内,在重复采动影响下仍能保持较好的连续性,未产生台阶错动,满足上行开采所需的条件。To demonstrate the feasibility of upward mining in the close-distance-and-gently-inclined coal seam group affected by repeated mining,the authors make a study on the continuity and integrity of the No.2^(-3)coal after the mining of the coal No.3,Coal No.4 and Coal No.5,in the lower part of the No.2^(-3)coal according to the engineering geology of the coal seam group in the southern area of Xin'an Colliery by analysis of the characteristics of the overlying rock collapsed after mining of the coal seam group and the strata settlement deformation law through theoretical analysis and physical similarity simulation,whose results show that No.2^(-3) coal is located in the fracture zone of the lower coal seam which can still maintain good continuity under the influence of repeated mining with no step misalignment,meeting the conditions required for upward mining.

关 键 词：近距离缓斜煤层群 上行开采 岩层移动 物理相似模拟 

分 类 号：TD823.81[矿业工程—煤矿开采]