钻机

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总之，中国旋挖网是旋挖产品的博览会，是旋挖工人员的俱乐部。

This new model of drilling machine can bore through solid rock ten metres deep.

这台新型能透十米厚的坚固岩石。

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

对到界边坡下采用螺旋开采煤柱不开采顺序引起的破坏过程进行了数值模拟。

Hydraulic Roofbolter is the key equipment for Ground Anchorage Engineering, and has very important affection to the quality of the engineering.

液压锚杆是岩土锚固工程的关键设备，对工程质量有影响。

After several years to jumbolter research,the hard rocks always present in the soft ones in the wall rock procedure using jumbolter,which results in changing the boring tool during the procedure.

经过几年对锚杆的跟踪研究,发现锚杆在围岩作业中常遇到软岩中有硬岩夹层的现象,造成工过程经常更换具的问题。