大面积密集煤矿采空区地质工程勘察技术研究
Research on geological engineering survey technology for large area dense coal mine goaf
赵新 1马明强 1房贤东 1崔艳昭1
作者信息
- 1. 山东正元建设工程有限责任公司,山东临沂 276000
- 折叠
摘要
采空区容易发生地面沉降或开裂等问题,为了降低事故发生概率,提出了大面积密集煤矿采空区地质工程勘察技术.在某煤矿区布设测网,利用瞬变电磁技术采集测线上的视电阻率并绘制视电阻率等值线断面图,结合多条测线的视电阻率分析结果将采空区位置标注在平面图上,结合采空区位置的横纵坐标计算采空区面积和体积,完成采空区地质工程勘察.结果表明,研究区共存在3个采空区,2个采空区在1号矿区且为无水采空区,1个采空区在2号矿区且为充水采空区.这是由于该区域地势较为低洼,再加上煤矿开采后,岩层破碎,产生大量裂隙,使得地表水逐渐渗入采空区.研究可为煤矿采空区地质工程勘察技术的进一步发展提供指导.
Abstract
Due to the easy occurrence of ground subsidence or cracking in goafs,in order to reduce the probability of safety accidents,geological engineering survey technology for large area dense coal mine goaf was proposed.A survey network on a coal mine area was set up,transient electromagnetic technology to collect the apparent resistivity of the survey line was used and the contour section of the ap-parent resistivity was drew,the location of the goaf on the plan in combination with the apparent resistivity analysis results of multiple survey lines was marked,and the area and volume of the goaf in combination with the horizontal and vertical coordinates of the location of the goaf to complete the geological engineering survey of the goaf were calculated.The results indicate that there are three goafs in the study area,with two goafs being waterless in No.1 mining area and the other goaf being a water filled mine goaf in No.2 mining area.This is due to the relatively low-lying terrain of the area,coupled with the fragmentation of rock layers after coal mining,resulting in a large number of cracks,allowing surface water to gradually seep into the goaf.This study can provide guidance for the further develop-ment of geological engineering survey technology in coal mine goafs.
关键词
煤矿采空区/瞬变电磁技术/视电阻率/地质工程勘察Key words
coal mine goaf/transient electromagnetic technology/apparent resistivity/geological engineering survey引用本文复制引用
出版年
2024
NETL
NSTL
万方数据