浅埋煤层群开采区段煤柱失稳力学机理研究  

Mechanical Instability Mechanism of Coal Pillar in Shallow Coal Seam Group Mining

作　　者：商铁林[1] 王金东 索永录[2] 王智懿[1] SHANG Tie-lin;WANG Jin-dong;SUO Yong-lu;WANG Zhi-yi(School of Energy Engineering,Yulin University,Yulin 719000,China;School of Energy Engineering,Xi’an University of Science and Technology,Xi’an 710054,China)

机构地区：[1]榆林学院能源工程学院,陕西榆林719000 [2]西安科技大学能源学院,陕西西安710054

出　　处：《榆林学院学报》2022年第6期1-4,共4页Journal of Yulin University

基　　金：国家自然科学基金项目(52064047);陕西省科技计划项目(2020SF-418)。

摘　　要：榆林地区浅埋煤层群开采,下煤层区段煤柱必须设计在合理位置,实验室相似材料模拟实验研究发现,在特定中心错距位置上煤层遗留区段煤柱发生结构性失稳现象。为了进一步探求其内在发生机理,通过分析间隔岩层受力状态,建立力学计算模型,提出了区段煤柱失稳的中心错距计算公式,得出红柳林煤矿3^(-1)煤和4^(-2)煤、4^(-2)煤和5^(-2)煤发生失稳的区段煤柱中心错距,为下煤层区段煤柱位置的合理布置提供理论依据。There is abundant shallow-buried coal seam group resource in Yulin,in which the reasonable section coal pillar layout is very important.Section coal pillar of upper coal seam will appear structural instability at specific center offset position through similar material simulation test in laboratory.In order to further explore its internal occurrence mechanism,calculation formula of center offset instability position for section coal pillar is presented by analyzing force state of rock strata between coal seams,and establishing mechanic model.The instability value of center offset position for section coal pillar is obtained between 3^(-1) coal seam and 4^(-2) coal seam and between 4^(-2) coal seam and 5^(-2) coal seam in Hongliulin Coal Mine.It provides theoretical support for rational arrangement of coal pillar in lower coal seam.

关 键 词：浅埋煤层群 区段煤柱 失稳 力学机理 

分 类 号：TD325[矿业工程—矿井建设]