The bolt truss were used to reinforce a layer concrete beam in order to simulate a mine roadway support in a mine layer roof.
对锚拉支架支护层状顶板进行了模拟试验和参数优化研究；
Remains of Titanoboa cerrejonensis were found in a layer of rock at the cerrejon Coal mine, one of the largest open-pit mines in the world.
Titanoboa cerrejonensis(蛇的名字)的遗骸是在cerrejon煤矿- - -世界上最大的露天煤矿之一的岩层中被发现的。
Combined with engineering practice and test study of loess basement dumping site in a coal mine. More probe to flow deformation feature for evolution soft layer is given here.
结合对某矿黄土基底排土场的工程实践与试验研究，对演化弱层的流动变形特性做了进一步的探讨。
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