本文選題：瞬變電磁 + 低阻異常區(qū)　； 參考：《煤炭科學(xué)技術(shù)》2017年08期

【摘要】：針對封閉不良地質(zhì)勘探鉆孔探測困難的問題,采用物探、鉆探綜合方法對圈定封閉不良勘探鉆孔進(jìn)行樣查,由于封閉不良勘探鉆孔可以連通煤層頂、底板含水層,其周邊區(qū)域視電阻率較低,利用瞬變電磁法圈定了掘進(jìn)巷道前方的低阻異常區(qū),進(jìn)而對異常區(qū)范圍內(nèi)施工鉆孔進(jìn)行驗(yàn)證,探查封閉不良勘探鉆孔情況,對比麥垛山煤礦130604工作面巷道掘進(jìn)實(shí)際揭露資料,與探查結(jié)果一致。結(jié)果表明:采用物探方法可以顯著縮小異常區(qū)的范圍,對異常區(qū)施工扇形探放鉆孔,這樣可以進(jìn)一步確定是否存在封閉不良勘探鉆孔,這2種方法相綜合,可以有效避免巷道掘進(jìn)過程中發(fā)生封閉不良勘探鉆孔水害事故。
[Abstract]:In order to solve the problem of difficult exploration in closed poor geological exploration, the method of geophysical exploration and comprehensive drilling is used to carry out sample investigation on the delineated bad exploration borehole. Because the closed bad exploration borehole can connect the top of coal seam and the aquifer of floor, The apparent resistivity of the surrounding area is low, the low resistivity anomaly area in front of the tunneling roadway is delineated by transient electromagnetic method, and then the construction borehole in the abnormal area is verified, and the bad exploration drilling is probed. Comparing with the actual excavation data of 130604 face in Maiduishan Coal Mine, the results are consistent with the exploration results. The results show that the range of abnormal areas can be significantly reduced by using geophysical prospecting method, and the sector drilling holes can be constructed in abnormal areas, which can further determine whether there are closed bad exploration boreholes, and the two methods are integrated. It can effectively avoid the water hazard accident in the process of roadway tunneling.
【作者單位】： 神華寧夏煤業(yè)集團(tuán)有限責(zé)任公司麥垛山煤礦;
【分類號(hào)】：TD745.2

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