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

新型钻能钻透十米厚的坚固岩石。

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总之，中国旋挖钻网是旋挖钻产品的博览会，是旋挖钻施工人员的俱乐部。

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钻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.

液压锚杆钻是岩土锚固工程的关键设备，对工程质量有重要影响。

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.

经过几年对锚杆钻的跟踪研究,发现锚杆钻岩作业中常遇到软岩中有硬岩夹层的现象,造成施工过程经常更换钻具的问题。