深孔液动潜孔锤钻进技术研究与应用  

Study and Application on Drilling Technique of Deep Hole Fluid-powered DTH Hammers

作　　者：王建华[1] 苏长寿[1] 左新明[2] 

机构地区：[1]中国地质科学院勘探技术研究所,河北廊坊065000 [2]河北省地矿局国土资源勘察中心,石家庄市050081

出　　处：《勘察科学技术》2011年第6期59-64,共6页Site Investigation Science and Technology

基　　金：科技部科研院所专项资金项目"(2005)系列高效液动潜孔锤研究与开发"

摘　　要：液动潜孔锤钻探以冲击动载和回转切削相结合的方式进行岩石破碎,在中硬以上的弹塑性岩石和脆性岩石中可有效地提高钻探效率、延长钻头的使用寿命、提高回次进尺、提高岩芯采取率、减少钻孔弯曲、节约生产成本。但传统的液动潜孔锤适用的钻孔口径小、钻孔浅以及存在着诸多弊端,不能满足越来越深的钻探工作需要。新型高效系列液动锤以创新工作原理为出发点,以满足高效、方便为原则,对液动锤进行了技术提升和完善,取得了良好的效果。The fluid-powered DTH hammer crushes rocks through the combination of impact load and rotary cutting.In the drilling of medium to harder elastic-plastic formation,it can increase drilling efficiency with extended bit life,greater drilling footage per run,higher core recovery,less borehole deviation,lower drilling cost.But the conventional fluid-powered DTH hammers are only suitable for small diameter,shallow borehole drilling,and they also have some other problems.Thus,they can not meet the deep hole drilling requirements.With the introduction of an innovative operating theory and the principle of high efficiency and convenience,a new series of fluid-powered DTH hammers have been developed,which complete and improve the fluid-powered DTH hammers drilling technique,and the good results have been obtained.

关 键 词：液动潜孔锤 绳索取芯液动锤 结构优化 应用效果 

分 类 号：P634[天文地球—地质矿产勘探]