Borehole hydromining is a kind of safe and efficient new mining method .

钻孔水力采是一种既安全、又能极大地提高资源利新采方法。

Robert and Slogger were still cutting coal when David reached them.

当大卫到达罗伯特和斯洛格跟前时，他们还在采。

The fracturing process induced by different excavation sequence under final highwall with auger mining was numerically simulated.

对到界边坡下采螺旋钻机开采柱不同开采顺序引起破坏过程进行了数模拟。

Excavate coal is primary production link in coal mine production, therefor, Weaving excavate coal working face supersedure plan has instructional meaning.

采是生产中主要生产环节,因而编制采工作面接替计划对生产具有指导性意义。

The shortwall ladder prop mining method namely strip extraction has been more extensively applied currently in small coal mine of Shaanxi province.

短壁刀柱采法即条带开采,目前在陕西省开采中较广泛应。

The obtained achievement in building material industry is studied, including sintering cement with substituting coal by cokeite and smelting rockwool with substituting coke by cokeite and so on.

本文介绍了采副产品～天然焦特性，并对其在建材行业开发研究成果进行了评述．主要包括天然焦代烧制水泥，天然焦代焦炭熔制岩棉等。