摘要
针对钱营孜煤矿西三轨道上山精准对穿巷道疏放水钻孔施工距离长、精度要求高、地层断层成孔性差等技术难点,通过对大功率定向钻进装备优选、钻孔轨迹精确设计、钻孔轨迹精准控制、复合定向钻进强排渣等方面的技术研究,实现疏放水孔钻进至443m从目标巷道预定区域精确对穿贯通,上下误差0.19m,水平位移误差1.72m,自2017年10月28日巷道贯通后,截止2017年12月1日总出水量3200m^3,有效保障西三轨道上山和西三回风上山的掘进安全。
In view of the technical difficulties of long distance drilling,high accuracy and poor fault formation in the drainage hole construction for uphill Xisan rail laneway construction in Qianyingzi coal mine,through the technical study on optimization choice of high-power directional drilling equipments,precise design and control of drilling trajectory and strong slag discharge by composite directional drilling,the drainage hole was drilled 443m accurately targeting the predetermined site of laneway with the up-down error of 0.19m and the horizontal displacement error of 1.72m.By the end of December 1,2017,the total discharge amount reached 3200m 3,the tunneling safety of uphill rail and uphill return air channel are effectively protected.
作者
冯达晖
FENG Da-hui(Xi’an Research Institute of China Coal Technology&Engineering Group Corp.,Xi’an Shaanxi 710077,China)
出处
《探矿工程(岩土钻掘工程)》
2018年第3期33-36,41,共5页
Exploration Engineering:Rock & Soil Drilling and Tunneling
关键词
煤矿井下
精准对穿巷道
疏放水
定向成孔技术
轨迹设计和控制
underground coal mine
accurate targeting at laneway
water discharge
directional hole-forming technology
design and control of drilling trajectory