摘要
以山东某煤矿3煤近距离开采的3_(上)103、3_(下)103工作面为研究对象,开展覆岩垂直应力变化与地表移动规律研究。通过地表移动实测值和工作面地质数据,分别反演了3_(上)103工作面单独开采,3_(上)103、3_(下)103工作面均开采后的地表概率积分法预计参数,分析了重复开采地表岩移参数变化规律。根据开采工作面地质信息与各岩层力学参数,基于FLAC^(3D)对3_(上)103工作面单独开采,3_(上)103、3_(下)103工作面开展数值模拟,获得了开采地表移动与覆岩垂直应力演变规律。为实现近距离煤层安全开采提供了理论依据。
A study on the vertical stress change and surface movement pattern of overburden rock was carried out at the 3_(up)103 and 3_(down)103 working faces of a coal mine in Shandong province,which were mined in close proximity.By using the actual measured values of surface movement and geological data of the working face,the projected parameters of the surface probability integral method after mining 3_(up)103 working face alone and 3_(up)103 and 3_(down)103 working faces both,respectively,were inverted,and the change law of surface rock movement parameters of repeated mining was analyzed.Based on the geological information of the mining face and the mechanical parameters of each rock layer,numerical simulations based on FLAC^(3D) were carried out for the 3_(up)103 working face alone and the 3_(up)103 and 3_(down)103 working faces to obtain the evolution law of mining surface movement and vertical stress of overburden rock.It provides a theoretical basis for achieving safe mining of close coal seams.
作者
马敬龙
王凡华
尚亚博
张习东
栾亨宣
栾元重
安乐
MA Jinglong;WANG Fanhua;SHANG Yabo;ZHANG Xidong;LUAN Hengxuan;LUAN Yuanzhong;AN Le(Zaozhuang Mining(Group)Fucun Coal Industry Co.,Ltd.,Jining 277605,China;College of Intelligent Equipment,Shandong University of Science and Technology,Tai′an 271019,China;College of Mechanical and Electronic Engineering,Shandong University of Science and Technology,Qingdao 266590,China;College of Geodesy and Geomatics,Shandong University of Science and Technology,Qingdao 266590,China)
出处
《煤炭技术》
2025年第6期6-10,共5页
Coal Technology
基金
国家自然科学基金项目(52204171)
山东省自然科学基金面上项目(ZR2020MD024)
山东省自然科学基金青年基金(ZR2021QE085)
山东省高等学校青年创新团队发展计划项目(2022KJ321)。
关键词
重复开采
变形观测
参数反演
数值模拟
垂直应力
repeated mining
deformation observation
parameter inversion
numerical simulation
vertical stress
