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.
Titanoboacerrejonensis(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。
There are four layer coal in Huafeng coal mine of Xinwen coal group company, it is mined layer by layer, artificial roof is used by diamond metal net over a long period of time.
新汶矿业集团华丰煤矿四层煤分层开采，长期以来全部采用金属菱形网作假顶。
The opening stability in soft weak coal layer is important to the safe production in a mine.
软弱煤层巷道的稳定性对煤矿正常安全生产起着重要作用。
The original emphasizesd on construction in mine shaft deep thick swelling claypan in Tang-kou, the damage of outward layer a well of wall and some efficient measures.
介绍了唐口副井井筒冻结段深厚膨胀黏土层施工、外层井壁变形破坏情况及采取的有效措施，取得了一些有用的经验。为类似地层施工提供借鉴。
The original emphasizesd on construction in mine shaft deep thick swelling claypan in Tang-kou, the damage of outward layer a well of wall and some efficient measures.
介绍了唐口副井井筒冻结段深厚膨胀黏土层施工、外层井壁变形破坏情况及采取的有效措施，取得了一些有用的经验。为类似地层施工提供借鉴。
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