常村煤矿N3采区永久避难硐室构建研究与试验  

Research and experiment on permanent refuge haven construction of Changcun Coal Mine N3 mining area

作　　者：高娜[1] 韩海荣[2] 马德祥[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]中冶京诚工程技术有限公司,北京100053

出　　处：《煤炭学报》2013年第12期2168-2170,2173-2174,共5页Journal of China Coal Society

基　　金：中央高校基本科研业务费专项资金资助项目(FRFTP13001A);中国博士后科学基金资助项目(2013M540866)

摘　　要：通过声波测试试验,确定常村煤矿避难硐室松动圈深度为1.8~2.0 m,采用锚杆,锚索及锚网喷联合支护方式;根据N3采区最多作业人数、人员及设备体积和围岩坚固系数,确定硐室规模为100人,硐室总有效面积为136 m2,有效长度为39 m、有效宽度为3.5 m,半圆拱形断面掘进宽度为4.7 m,直墙高度为1.3 m,仰拱深度为0.85 m;根据数值模拟分析结果,确定硐室底板受力大于顶板和侧帮,验证了联合支护方式能够有效减小硐室垂直和水平方向的应力和位移,证实了仰拱设计的必要性;通过压力强度计算和围岩安全性分析,确定防护墙厚度为1 m,硐室安全防护结构由密闭缓冲层和混凝土砌碹层组成;通过正压气密实验,测定避难区最大正压值可达2 000 Pa,气密性良好。According to acoustic measurement experiment,the refuge haven loose circle depth of 1. 8-2. 0 m and the combination support patterns to anchor rod,anchor cable and anchor net spray were determined. The total effective area of 136 m2,effective length of 39 m,the effective width of 3. 5 m,semicircle section width of 4. 7 m,straight wall height of 1. 3 m,invert depth of 0. 85 m were determined,according to the maximum workers,personnel and equipment size,rock consolidating coefficient. The numerical simulation determined the haven floor force was larger than the roof and the side wall,verified that the combination support patterns could effectively reduce vertical and horizontal stress and displacement,affirmed the necessity of invert. Through the pressure calculation and structure safety analysis,the protective wall thickness of 1 m,protective structure consists of airtight buffer layer and concrete lining layer were determined. Through pressure and airtight experiments,the maximum positive pressure of 2 000 Pa was measured and the air tightness was good.

关 键 词：永久避难硐室 松动圈 防护结构 正压气密性 

分 类 号：TD792[矿业工程—矿井通风与安全]