大口径深井循环通孔技术研究  

Research on circulating through hole technologyof large diameter deep well

作　　者：刘钰鑫[1] Liu Yuxin(Xingdong Mine,Jizhong Energy Co.,Ltd.,Xingtai 054001,China)

机构地区：[1]冀中能源股份公司邢东矿,河北邢台054001

出　　处：《煤炭与化工》2024年第11期37-39,97,共4页Coal and Chemical Industry

摘　　要：针对邢东矿大口径矸石投料孔堵塞后通孔施工过程中存在钻进排渣难、碎岩效率低的问题,本文研究了大口径循环钻进技术,分析了建立泥浆循环的基本条件,基于孔内矸石存在状态的不均一性,利用螺杆做为动力配备自行研制的新型旋翼钻头进行钻进。通过实践证明,该方法可建立维持循环通道,排渣效果好,钻进效率高,可推广应用于煤矿大口径钻孔堵塞后通孔施工及大口径钻孔快速钻进。In view of the problems of difficult drilling and low rock breaking efficiency in the construction process of large-diameter gangue feeding hole in Xingdong Mine,this paper studies the large-diameter circulating drilling technology and analyzes the basic conditions for establishing mud circulation.Based on the inhomogeneity of the existing state of gangue in the hole,the screw is used as the power to be equipped with a self-developed new rotor bit for drilling.Practice has proved that this method can establish a maintenance circulation channel,with good slag discharge effect and high drilling efficiency.It can be popularized and applied to through-hole construction and rapid drilling of large-diameter boreholes after blockage of large-diameter boreholes in coal mines.

关 键 词：大口径钻孔 泥浆循环 旋翼破碎钻头 快速钻进 

分 类 号：TD265[矿业工程—矿井建设]