钻孔爆破法

对于竖井工程的施工开挖，最常采用的手段仍然是钻孔爆破法。

The most common method used in shaft excavation was still drilling and blasting .

与常规的钻孔爆破法相比，采用冻土层下的球状装药爆破法，可有效地控制爆破过程的飞石，降低爆破成本，加快施工速度。

Compared with common drilling and blasting method , this blasting method is more effective in control of flying rocks , lower in cost and high in constructing rate .

目前国内中小型石材矿山大多采用钻孔爆破法和钻孔打楔法进行石材开采和大块料石分割。

At present , borehole explosion and borehole wedging methods are widely used in mining rock materials and cutting block raw rock in middle and small rock material quarry in China .

在开挖施工阶段，岩爆的预防主要有三种方法，即：理论推算岩爆强度等级法、超前地质预报法和钻孔爆破预卸载法。

During the tunnel cutting and construction period , there are mainly three prevention methods to fight against rock burst : theoretical calculation of rock burst strength grade , advance geological forecast and pre-unloading by drilling burst .

水下钻孔爆破微差爆破法的应用

Application of short - delay blasting underwater borehole explosion