沟谷地貌下特厚煤层综放面超前支承压力分布规律研究  

Analysis on distribution law of advance abutment pressure in fully-mechanized caving face of extra thick coal seam under gully landform

作　　者：王绪俊 侯典东 王光民 翟忍 赵同超 Wang Xujun;Hou Diandong;Wang Guangmin;Zhai Ren;Zhao Tongchao(Jining No.3 Coal Mine,Yankuang Energy Group Co.,Ltd.,Jining 272000,China)

机构地区：[1]兖矿能源集团股份有限公司济宁三号煤矿,山东济宁272000

出　　处：《能源与环保》2025年第2期278-281,286,共5页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：2022年度河北省高等学校科学技术研究项目(ZC2022047)。

摘　　要：针对沟谷地貌地形下龙王沟煤矿工作面向坡推进过程中发生围岩失稳、变形破坏等问题,采用FLAC^(3D)数值模拟、现场监测数据分析的方法对61617工作面向坡推采阶段的超前支承压力演化特征进行研究。结果表明,工作面由坡底向坡顶推采过程中超前支承压力不断增大,应力峰值达到29 MPa,坡顶与坡底工作面超前支承压力最大值差值为13 MPa。同时,通过对工作面向坡推采阶段锚杆索应力监测数据分析发现,位于坡顶测点的应力值最大,应力值与向坡推进区域测点应力差值超过20 kN,侧面验证了数值模拟分析结果。In response to the instability and deformation failure of surrounding rock that occurred during the slope advancement of the working face in the Longwanggou Coal Mine under gully landform,the characteristics of the evolution of advance abutment pressure during the slope advancement mining phase of No.6617 working face were studied by using FLAC^(3D)numerical simulation and field monitoring data analysis.The results indicated that as the working face advances from the bottom to the top of the slope,the advanced abutment pressure gradually increases,with the stress peak reaching 29 MPa.The difference in the maximum advance abutment pressure between the slope top and slope bottom working faces was 13 MPa.Moreover,analysis of the monitoring data of bolt and cable stress during the slope advancement mining phase revealed that the stress values at the monitoring points located at the slope top were the highest,with a stress difference exceeding 20 kN compared to the monitoring points in the slope advancement area.This finding further verified the results of the numerical simulation analysis.

关 键 词：沟谷地貌 向坡推进 工作面 超前支承压力 分布规律 

分 类 号：TD323[矿业工程—矿井建设]