巨厚倾斜煤层开采时效性优化研究  

Research on Time Efficiency Optimization of Mining in Thick and Sloping Coal Seams

作　　者：王寰宇 张笑成 WANG Huanyu;ZHANG Xiaocheng(School of Resources and Civil Engineering,Liaoning Institute of Science and Technology,Benxi Liaoning 117004,China;Ulantuga Coal Co.,Ltd.,Xilingol League Inner Mongolia 026000,China.)

机构地区：[1]辽宁科技学院资源与土木工程学院,辽宁本溪117004 [2]锡林郭勒盟乌兰图嘎煤炭有限责任公司,内蒙古锡林郭勒盟026000

出　　处：《辽宁科技学院学报》2024年第5期23-27,共5页Journal of Liaoning Institute of Science and Technology

基　　金：2024年辽宁省教育厅青年项目“巨厚倾斜煤层露天矿构造结构面控制开采研究”(LJ212411430005)。

摘　　要：巨厚倾斜煤层开采难度大,且开采后岩层移动及地表沉降规律较为复杂,但目前业界对巨厚倾斜煤层开采后的岩层移动规律和地表变形特征研究不充分。文章以内蒙古某大型煤矿三采区为研究对象,采用FLAC 3D数值模拟软件构建三维地质模型进行数值计算,并采用相似材料模拟物理实验,对数值模拟计算的结果进行验证。同时,针对模拟过程中不同时间矿体围岩的应力与蠕变速度变化较大的问题,文章对矿山开采过程的时效性进行探究。通过研究可以得出:随着开采深度的增加,水平应力的聚集速度加快,应力的作用时间延长,水平应力峰值也变大,而进路开挖的顺序也会对采场的稳定性造成一定的影响。该研究成果可为相似矿山开采研究提供理论依据及技术参考。The mining of thick and inclined coal seams is difficult,and the laws of rock movement and surface subsidence after mining are relatively complex.However,the research on the laws of rock movement and surface deformation characteristics after mining thick and inclined coal seams is currently insufficient.This paper takes the third mining area of a large coal mine in Inner Mongolia as the research background,and uses FLAC 3D numerical simulation software to construct a three-dimensional geological model for numerical calculation,thus verifying the results of logarithmic intelligence simulation calculation using similar material simulation physics experiments.Meanwhile,according to the simulation process,the stress and creep rate of the surrounding rock of the ore body vary greatly at different times.Therefore,this paper also explores the timeliness of the mining process.Through research,it can be concluded that as the mining depth increases,the accumulation rate of horizontal stress accelerates,the duration of stress action prolongs,and the peak value of horizontal stress increases as well.In addition,the sequence of excavation for the access route has a certain impact on the stability of the mining site.The findings can provide theoretical basis and technical reference for similar mining research.

关 键 词：巨厚倾斜煤层 岩层移动 水平应力 变形特征 

分 类 号：TD325[矿业工程—矿井建设]