三交河煤矿巷道围岩物理力学性质测试研究
    点此下载全文
引用本文:
摘要点击次数: 476
全文下载次数: 
作者单位
李国彪,张新蛮 1. 中国矿业大学(北京)力学与建筑工程学院,北京100083
霍州煤电集团有限责任公司,山西霍州031400
2. 霍州煤电集团有限责任公司
,山西霍州,031400 
中文摘要:为解决三交河煤矿巷道围岩支护设计问题,提供初始的基础参数,利用实验室方法对围岩物理力学性质进行了测试和分析.实验结果表明:三交河煤矿2下煤平均密度比煤2上略大;泥岩平均密度相差不大;老顶K8中砂岩平均密度最大,为2727.15kg/m3.2上煤单轴抗压强度平均值为15.53MPa.2下煤单轴抗压强度平均值为9.89MPa.2上煤和2下煤直接顶底均为泥岩,但平均单轴抗压强度相差较大,分别为26.13MPa和54.32MPa.在单轴压缩试验条件下,围岩应力-应变曲线都具有上凹-直线-峰值-破坏的变化特征.
中文关键词:三交河煤矿  巷道围岩  物理性质  力学性质
 
Physical and mechanical properties test of roadway surrounding rock in Sanjiaohe mine coal
Abstract:In order to solve supporting design of roadway surrounding rock in Sanjiaohe Mine Coal and provide initial parameters,physical and mechanical properties of roadway surrounding rock were tested and analyzed using laboratory methods.The experimental results show that average density of the lower part of 2# coal is bigger than that of the upper part of 2# coal.Average density of the mudstone is similar.The average density of sandstone K8 in the old top is maximum and 2727.15kg/m3.The average values of uniaxial compressive strength of the upper part and the lower part of 2# coal are respectively 15.53MPa and 9.89MPa.Both of the direct top and bottom are mudstone and the mudstone of the direct top and bottom are respectively 26.13MPa and 54.32MPa.Rock stress-strain curves show variation characteristics of the concave-a straight line-the peak-the destruction in uniaxial compression tests.
keywords:Sanjiaohe mine coal  surrounding rock  physical property  mechanical property
查看全文  查看/发表评论  下载PDF阅读器
设备展厅
您是第4464433位访问者  备案许可证编号:京ICP备13036454号
版权所有:《中国矿业》杂志社有限公司
地  址: 北京市朝阳区安定门外小关东里10号院东小楼 邮编:100029 电话:010-68332570 88374940 E-mail: zgkyzzs@163.com