摘要
针对云冈矿8623工作面衔接不好,无法正常回采的问题,将8623工作面与5623-1、2623-2工作面进行贯通。根据采区的地质概况,选择相应的贯通测量技术,并对测量中的误差进行分析。得到相遇点在X轴方向上的预计误差值,进一步确定贯通测量的技术路线,并对贯通测量技术的精度进行分析,结果表明:贯通后的闭合差均在规程要求范围内,贯通效果较好,解决了工作面衔接不好的问题。在贯通后工作面回采距离为220 m,回采率高达85%,可采煤0.2 Mt,创造利润200万元。
In view of the poor connection of 8623 working face in Yungang Mine and the failure of normal stoping,the 8623 working face is connected with 5623-1 and 2623-2 working faces.According to the geological survey of the mining area,the corresponding transfixion survey technology is selected,and the error in the survey is analyzed.The predicted error value of the point of encounter in the X-axis direction is obtained,the technical route of hole-through survey is further determined,and the precision of hole-through survey is analyzed.The results show that the closing difference after hole-through is within the scope required by regulations,the hole-through effect is good,and the problem of poor working surface connection is solved.After completion,the stoping distance of the working face is 220 m,the stoping rate is as high as 85%,and 200,000 tons of coal can be mined,creating a profit of 2 million yuan.
作者
黄红龙
Huang Honglong(Geological Survey Dept.,Yungang Colliery,Datong Coal Mine Group Co.,Ltd.,037017)
出处
《江西煤炭科技》
2020年第4期161-163,共3页
Jiangxi Coal Science & Technology
关键词
切巷
贯通测量
预计误差
cutting lane
holing-through survey
estimated error
