This paper covers the entire lifetime of an underground coal mine,including the start-up of the mining oper-ations and t......

As mines go deeper and get larger,mine designs become more fragile largely due to the response of the rock mass to minin......

Based on the theory of Fuzzy Mathematics and Expert System, this paper presents the quantitative expression method of be......

Alpu lignite field is an important coal deposit with nearly 2 billion tons of coal resources located in the middle of Tu......

<正> 精致的3D即时战略 《GROUND CONTROL》是由MASSIVE ENTER-TAINMENT开发并由SIERRA公司出品的3D即时战略式游戏,笔者在外国的......