红柳林煤矿火烧区烧变岩巷道稳定性研究  

Research on the stability of burned rock roadway in fire area of Hongliulin Coal Mine

作　　者：张恩强[1] 陈泽年 侯兰涛 邵亚武 杨正春 ZHANG En-qiang;CHEN Ze-nian;HOU Lan-tao;SHAO Ya-wu;YANG Zheng-chun(College of Energy,Xi＇an University of Science and Technology,Xi＇an 710054,China;Key Laboratory of mining and disaster prevention in western mines of Ministry of Education,Xi＇an 710064,Ch;Shenmu Hongliulin Coal Mine of Shaanxi Coal Industry Co.,Ltd.,Yulin 719300,China)

机构地区：[1]西安科技大学能源学院,陕西西安710054 [2]陕西汇森煤业开发有限责任公司,陕西西安710064 [3]陕煤集团神木红柳林矿业有限公司,陕西榆林719300

出　　处：《煤炭工程》2018年第10期121-125,共5页Coal Engineering

摘　　要：为解决红柳林煤矿火烧区巷道支护困难问题。以该矿4-2煤回风大巷为工程背景,通过理论分析、数值模拟及工程实践,对火烧区巷道围岩工程地质力学和相应的支护技术进行了研究。结果表明:火烧区巷道变形破坏主要原因是煤岩体受到热损伤、物理膨胀及氧化变质等复杂物化影响导致煤岩力学强度降低、节理裂隙发育及矿物成分改变,导致锚杆(索)难以锚固,使巷道顶板初期变形量和离层量较大以致破坏。因此应提高锚杆(索)预应力,增加锚固剂数量,使巷道顶板形成稳定的挤压平衡拱,充分发挥锚杆(索)主动支护作用。In order to solve the problem of roadway support in the burning area of Hongliulin Coal Mine,the engineering geological mechanics and corresponding supporting technology of roadway surrounding rock engineering are studied by theoretical analysis,numerical simulation and engineering practice. Results show that the main reason is that the coal fire area of roadway deformation and destruction is caused by complex physical and chemical effect such as thermal damage of rock mass,the physical expansion and the oxidation,which leads to the decrease of strength of coal and rock mechanics,joint fissure development and mineral composition change,and results in inadequate anchor bolt（ cable）,larege initial deformation and roof delamination of roadway. Therefore,it is necessary to improve the pre-stress of the bolt（ cable）,increase the number of anchoring agents,and make the roof of the roadway form a stable extrusion balance arch,and give full play to the active support of the bolt（ cable）.

关 键 词：火烧区 数值模拟 热损伤 

分 类 号：TD322.4[矿业工程—矿井建设]