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近距煤层群开采在不同宽度煤柱中的传力机制
引用本文:姜鹏飞,康红普,张剑,林健,司林坡.近距煤层群开采在不同宽度煤柱中的传力机制[J].采矿与安全工程学报,2011,28(3):345-349.
作者姓名:姜鹏飞  康红普  张剑  林健  司林坡
作者单位:天地科技股份有限公司开采设计事业部,北京,100013
基金项目:国家“十一五”科技支撑计划项目(2008BAB36B07); 天地科技股份有限公司科技发展基金项目(TZ-JJ-09-KC-3);天地科技股份有限公司投资发展部公司研发项目(TZ-GY-2010-KC-6)
摘    要:以目前汾西矿区近距煤层群开采为背景,分析了煤层回采后煤柱及附近煤岩体应力重分布影响因素,并采用FLAC3D有限差分程序计算研究了近距煤层群上部煤层回采在不同宽度煤柱内部及下部煤岩体中的传力机制.结果表明:煤柱内部集中应力对底板应力重分布影响大于对项板应力重分布的影响;不同宽度煤柱内部及顶底板煤岩体应力集中系数不同,随着...

关 键 词:近距煤层群  传力机制  应力集中  应力影响扩散角  数值模拟

Mechanism of Load-Transfer Between Coal Pillars with Different Widths in Mining the Short-Range Seams
JIANG Peng-fei,KANG Hong-pu,ZHANG Jian,LIN Jian,SI Lin-po.Mechanism of Load-Transfer Between Coal Pillars with Different Widths in Mining the Short-Range Seams[J].Journal of Mining and Safety Engineering,2011,28(3):345-349.
Authors:JIANG Peng-fei  KANG Hong-pu  ZHANG Jian  LIN Jian  SI Lin-po
Affiliation:JIANG Peng-fei,KANG Hong-pu,ZHANG Jian,LIN Jian,SI Lin-po(Mining & Designing Department,Tiandi Science & Technology Co.Ltd.,Beijing 100013,China)
Abstract:Aiming at the situation of mining short-range coal seams in Fenxi mining area,we analyze the factors affecting the re-distribution of stress of coal-rock mass near the coal pillar and its adjacent area.In addition,we study the mechanism of load-transfer between coal pillars and in coal-rock mass using the finite difference program FLAC3D.The result indicates that the effect of stress concentration in coal pillars on the re-distribution of floor stress is greater than that on the roof stress;the stress conce...
Keywords:short-range coal seams  load-transfer mechanisms  stress concentration  stress influence diffusion angle  numerical simulation  
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