赵家寨矿揭煤工作面突出预测敏感指标的研究  

Research on Sensitive Indexes of Coal and Gas Outburst Prediction for Coal Uncovering Face of Zhaojiazai Coal Mine

作　　者：孙文标[1] 尚政杰 

机构地区：[1]河南工程学院安全工程系,河南郑州451191 [2]郑州煤炭工业集团通风管理部,河南郑州450007

出　　处：《煤矿安全》2017年第1期17-20,共4页Safety in Coal Mines

摘　　要：为确定适合赵家寨煤矿瓦斯地质特点的石门揭煤及近煤层岩巷掘进工作面的突出危险性预测敏感指标及其临界值,在实验室测试1~3 mm粒径煤样不同吸附平衡压力条件下的瓦斯解吸数据基础上,采用数学软件统计分析和现场测试验证相结合的方法对赵家寨钻屑解吸指标敏感性和临界值进行了研究,发现钻屑解吸指标△h2较K1值敏感;钻屑解吸指标与吸附平衡压力呈幂函数关系,确定瓦斯压力0.6 MPa时的钻屑解吸指标△h2=185 Pa作为石门揭煤及近煤层岩巷掘进工作面突出危险性预测指标临界值。In order to indentify rock cross-cut coal uncovering adapting to gas geological features of Zhaojiazhai Coal Mine and critical values and sensitive indexes of coal and gas outburst prediction for heading face of roadway near coal seam,on the basis of testing methane desorption data of 1 mm to 3 mm particle size of coal samples under the conditions of different adsorption equilibrium pressure,we research the critical value and sensitive of cuttings desorption index by mathematical software and on-site verification testing method. We find that the desorption index △h_2 is more sensitive than the value of K_1. The relation between cuttings desorption index and adsorption equilibrium pressure is a power function. The cuttings desorption index △h_2= 185 Pa can be taken as critical value of coal and gas outburst risk prediction for rock cross-cut coal uncovering and heading face of roadway near coal seam in Zhaojiazai Coal Mine when gas pressure is 0. 6 MPa..

关 键 词：石门揭煤 突出危险 瓦斯地质 敏感指标 临界值 

分 类 号：TD713[矿业工程—矿井通风与安全]