用钻屑量指标预测煤与瓦斯突出时，由于采样装置落后和操作不规范等原因，导致预测结果可靠性降低。
As result of backward equipment and wrong operation, the forecast results become unreliable when the index of drilling yields is used in forecasting coal or rock outburst.
该方法的初采钻爆技术是解决顶煤破碎与顺利放出的有效途径之一。
The technique of primary drilling and blasting is an effective way to solve the problem of crushing, caving and transportation.
钻割一体化设备是将高压磨料射流技术与钻孔施工技术相结合的治理煤矿煤与瓦斯突出的新型装备。
Drilling-cutting integration equipment is a new equipment that combine high-pressure abrasive jet technology and drilling technology, which manage coal and gas outburst in coal mines.
钻割一体化设备是将高压磨料射流技术与钻孔施工技术相结合的治理煤矿煤与瓦斯突出的新型装备。
Drilling-cutting integration equipment is a new equipment that combine high-pressure abrasive jet technology and drilling technology, which manage coal and gas outburst in coal mines.
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