In the coal mine gas drainage,the gas drainage in gob has a dominant position. According to different stages of the prod......

我们首先在假设工资水平与利率均为随机的情况下,将传统的精算现值计算方法推广,即在风险中性概率测度下计算变量的精算现值,这样......

“采空区积水”主要是指年代久远采掘范围不明的老窑积水、矿井周围缺乏准确绘制资料的乱掘小窑积水或矿井本身自掘的废巷老窑水。......

针对煤矿采空区环境的特点，分析煤泥的基本特性，研究运用煤泥充填采空区方法，并对其中的关键技术进行具体论述。重点研究包括煤泥水处......

矿井火灾是煤矿的重大灾害之一,它不仅能使矿井遭受巨大的物质损失,同时也导致井下矿工的死亡。煤矿井下自燃以采空区最为严重,自......

The present study examines the results of the researches related to the gob bulking factor carried out at home and abroa......

To discuss the domino instability effect and large area roof falling and roof accidents of surrounding rockcoal pillars ......