摘要
采空区下三维地震勘查一直是煤矿补勘的难题,地震资料信噪比差,有效反射波不明显,难以得到有效资料。以东庞矿北井9400采区和西庞井9500采区为例,应用采空区下煤层地震勘探新技术,国内首次获得了大面积采空区下煤层高品质地震资料及地质成果,不但准确圈定了2号煤采空区的范围,更是透过采空区成功得到了其深部9号煤层的相关资料,并对奥陶系灰岩中构造及富水区进行预测,对正在进行的奥灰区域注浆改造工程起到了有效指导作用。
Three-dimensional seismic exploration survey in goaf was a difficult in additional exploration in coal mine, such as SNR gap of seismic data; effective reflection wave was not obvious and not easy to get valid data. Taking 9400 mining area in west well of Dongpang Mine and 9500 mining area of Xipang well as examples, geological findings and high quality seismic data under widespread mined-out area were obtained with this technology first in China, not only delimitated range of No.2 coal goaf, but got relevant information of No.9 coal seam successfully through goal, predicted water abundant area and structure of limestone of Ordovician system, which effectively guided running grouting reconstruction project in Ordovician limestone area.
出处
《煤炭与化工》
CAS
2017年第1期136-140,共5页
Coal and Chemical Industry
关键词
采空区
溶洞
裂隙
地震勘探
goaf
karst cave
fracture
seismic exploration
