摘要
在分析神东矿区旺采采空区失稳危险18种影响因素的基础上,采用指数分析法对旺采采空区失稳危险进行了分级方法研究,建立了神东矿区旺采采空区失稳危险分级指标,确定了旺采采空区失稳危险指数W。将神东矿区旺采采空区失稳危险分级划分为5级,即Ⅰ级危险(特大危险性W≥0.80);Ⅱ级危险(重大危险性0.70≤W<0.80);Ⅲ级危险(较大危险性0.60≤W<0.70);Ⅳ级危险(一般危险性0.50≤W<0.60)和Ⅴ级危险(较小危险或无危险:W<0.50)。结合实例,对榆家梁煤矿52108旺采采空区失稳危险性进行了分级。实践表明,该分级方法是合理和可行的。
On the basis of analyzing 18 influence factors of Wongawilli gob unstability danger, Wongawilli gob unstability danger index W was present by index analysis method. 5 danger degrees of Wongawilli gob unstability were classed, that is, I ( super danger, W ≥ 0. 80), Ⅱ(great danger, 0. 70≤W〈0. 80) ;Ⅲ (major danger, 0. 60≤W〈0. 70), IV (common danger, 0. 50≤W〈0. 60) and V (minor danger, W〈0. 50) . Danger degree of 52108 Wongawilli gob in Yujialiang Colliery was classed. Practice showed the result was rational and feasible.
出处
《煤矿开采》
北大核心
2013年第1期70-72,53,共4页
Coal Mining Technology
关键词
旺采采空区
危险分级
指数分析法
影响因素
Wogawilli gob
danger classification
index analysis method
influence factor