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目前，国内煤矿中仍有相当数量的炮采工作面，炮采工作面普遍使用煤电钻作为煤壁钻孔工具。在井下工作面使用煤电钻有许多优点，但也存在许多缺点：（互）为将660V或更高的电源电压变为煤电钻所使用的127V安全电压，需有一套变压及电机综合保护装置；（2）煤电钻不可实现湿式钻
At present, there are still a considerable number of artillery mining face in domestic coal mines. Coal mining drill is commonly used as coal wall drilling tool in artillery mining face. There are many advantages to using a coal drill in a downhole face, but there are also many disadvantages: (Mutual) In order to turn a mains voltage of 660V or higher into a 127V safety voltage for a coal drill, a transformer and motor combination Protection device; (2) coal drill can not achieve wet drilling