采煤

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

钻孔水力煤是一种既安全、又能极大地提高资源利用率的新的法。

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

当大卫到达罗伯特和斯洛格跟时，他们还煤。

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

对到界边坡下用螺旋钻机开煤柱不同开顺序引起的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.

煤是煤生产中的主要生产环节,因而编制煤工作面接替计划对煤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.

短壁刀柱煤法即条带开,目西省小煤开中较广泛应用。

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.

本文介绍了煤副产品～天然焦的特性，并对其建材行业的开发研究成果进行了评述．主要包括天然焦代煤烧制水泥，天然焦代焦炭熔制岩棉等。