提高自然崩落法中聚矿沟槽井施工效率

Improving Construction Efficiency of Concentrating Trench Wells in Natural Front-caving Method

随着铜矿峪矿二期工程向深部不断延伸,为了提高底部结构的稳定性,抬高拉底层,加大拉底层与聚矿沟的垂直距离,相应的槽井也随之加高。针对铜矿峪矿二期工程410中段主副层聚矿沟及拉槽槽井高度较高,采用普通法施工困难、劳动强度高、效率低、安全系数较低的现状,通过优化槽井施工时掏槽孔的布孔方式,改进操作平台的搭接方式等措施,提高工作效率及安全性。实践表明:槽井施工工艺优化后,凿岩效率由1.4 m/炮提高到1.62 m/炮,提高了15.7%;每循环操作平台井内准备时间由5 h降至3.5 h,下降了30.0%;凿岩爆破井内作业时间由5.5 h降至4.2 h,下降了23.6%。

With the continuous extension of the Tongkuangyu Mine Phase II project to the deep,in order to improve the stability of the bottom structure,the pull bottom layer is raised,the vertical distance between the pull bottom layer and the ore gathering ditch is increased,and the corresponding grooves are also increased accordingly.high.In view of the high height of the main and auxiliary layers of the main and auxiliary layers of the 410 middle section of the Tongkuangyu Mine project,the height of the ore-gathering ditch and the trough well,the construction of the co mmon method is difficult,the labor intensity is high,the efficiency is low,and the safety factor is low.By optimizing the construction of the trough well The layout method of the cut holes and the improvement of the overlapping method of the operating platform can improve the work efficiency and safety.Practice has shown that after the optimization of the slot well construction process,the rock drilling efficiency is increased from 1.4m/shot to 1.62 m/shot,an increase of 15.7%;the preparation time in the well for each cycle operation platform is reduced from 5 hours to 3.5 hours,a decrease of 30.0%;the operating time in rock drilling and blasting wells decreased from 5.5 hours to 4.2 hours,a decrease of 23.6%.