从目前已有的研究状况来看，对盲天井深孔爆破一次成井的理论和试验研究还不多。
But till today, researches on completion of blind shafting in deep-hold blasting theory and experiment were not many.
介绍了爆破一次成井技术在漂塘钨矿的应用实践，提出了爆破一次成井的掏槽方式，爆破参数的设计计算方法和炮孔的施工要求。
The undermine method of well drilling technology once of blasting is put forward as well as the calculation of blasting parameters and the demand of implementation for hole.
介绍了爆破一次成井技术在漂塘钨矿的应用实践，提出了爆破一次成井的掏槽方式，爆破参数的设计计算方法和炮孔的施工要求。
The undermine method of well drilling technology once of blasting is put forward as well as the calculation of blasting parameters and the demand of implementation for hole.
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