深部矿井石门揭煤高压水射流扩孔防突技术  

The High Pressure Water Jet Reaming Outburst Prevention Technique for Rock Cross-cut Coal Uncovering in Deep Mine

作　　者：刘金龙[1] 夏永军[2,3] 徐世波[1] 范大昌 

机构地区：[1]铁法煤业集团大兴煤矿,辽宁调兵山112700 [2]瓦斯灾害监控与应急技术国家重点实验室,重庆400037 [3]中国煤炭科工集团重庆研究院,重庆400037

出　　处：《煤矿安全》2012年第B10期43-45,共3页Safety in Coal Mines

摘　　要：针对大兴煤矿深部高地应力及高瓦斯压力复杂条件石门揭煤,采用高压旋转动密封水尾及三翼扩孔钻头,利用钻机带动钻杆进而使扩孔钻头旋转进行高压水射流扩孔强化卸压抽排瓦斯。该技术及装备能适用于不同角度钻孔,扩孔排渣顺畅,能显著提高煤孔卸压、抽排瓦斯效果,具有重要的推广应用价值。According to rock cross-cut coal uncovering under the condition of high ground pressure and high gas pressure in the depths of Daxing Coal Mine,it used high pressure rotating sealed joint and three wings reaming bit,it used the drilling rig to drive drilling pipe rotating,so that reaming drilling bit rotated to carry out high pressure water jet reaming,which strengthened pressure relief for gas pumping-exhaust.The technology and equipments were suitable for various angle drillings,coal cuttings discharged smoothly while the drilling was being reamed,remarkably improved the effects of coal drillings pressure relief and gas pumping-exhaust,it had important value for extending application.

关 键 词：扩孔 高压 旋转动密封 水尾 钻头 

分 类 号：TD713.3[矿业工程—矿井通风与安全]