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ＳＰＺ—１２０型水平孔钻机研制成功露天矿山的安全生产与经济效益之间的矛盾，推动了边坡稳定问题的深入研究。造成滑坡的主要原因是由于岩层内水压的活动，降低了岩体内聚力的结果。国内外研究结果表明，采取水平钻孔疏千方法降低水压，是提高露天矿山边坡稳定性的一种...
SPZ-120 horizontal hole drilling rig successfully developed the safety of open-pit mines and economic conflicts between the contradictions, and promote the slope stability in-depth study. The main reason for the landslide is the result of the decrease of the cohesion of the rock mass due to the hydraulic pressure in the rock formation. Research results at home and abroad show that adopting a horizontal drilling method to reduce the water pressure is a way to improve the stability of the open pit mine slope.