Study of advance elaborate detection with transient electromagnetic method for mine with closed poor boreholes

Authors

HUANG Zhongzheng, Ningxia Coal Industry Co., Ltd., CHN Energy, Yinchuan 750011, China
JIANG Guoqing, College of Geoscience and Surveying Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China; Geological Survey of Jiangsu Province, Nanjing 210018, China
WANG Jun, Ningxia Coal Industry Co., Ltd., CHN Energy, Yinchuan 750011, China
CHENG Jiulong, College of Geoscience and Surveying Engineering, China University of Mining & Technology (Beijing), Beijing 100083, ChinaFollow
MA Zhi, Ningxia Coal Industry Co., Ltd., CHN Energy, Yinchuan 750011, China
TIAN Chuxiao, College of Geoscience and Surveying Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China
XIN Chengtao, College of Geoscience and Surveying Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China

Abstract

Closed poor boreholes connect aquifers at some degree to form well concealed water diversion channels, which poses a water hazard threat on either tunneling or working bench recovery. In order to discuss the effectiveness of using the transient electromagnetic method in the advance detection of closed poor boreholes for the mine, the 3D geologic-geophysical model of the closed poor boreholes in front of the tunneling working bench was established based on the full-space transient electromagnetic theory to simulate and study the response characteristics of the full-space transient electromagnetic field in the influence area model of closed poor boreholes. As indicated by the numerical simulation results, the enhanced amplitude and obvious anomaly characteristics of the aquifer body near closed poor boreholes were shown in the induced electromotive force (EMF) multi-channel diagram. As indicated by the detection results, in combination with the study about the application in the advance detection work of closed poor boreholes in front of the tunneling working bench for the I0104₁08 working bench haulage way in Shuangma Coal Mine, Ningxia, there was local low resistivity at the coal seam roof near the borehole, indicating that the certain hydraulic conductivity of the borehole led to the enhanced relative local high water abundance of the coal seam roof. According to the study result, the local water abundance enhancement caused by the closed poor boreholes can lead to typical and recognizable transient electromagnetic field response. Adopting the transient electromagnetic method in the advance detection for the mine, in combination of elaborate processing and interpretation, the relative water abundance characteristics of the rock formation near the borehole can be effectively found out, and then the hydraulic conductivity of closed poor boreholes can be evaluated, providing basis for the governance of closed poor boreholes and guaranteeing the safe production of the mine.

Keywords

closed poor borehole, transient electromagnetic method for mine, advance detection, numerical simulation, water diversion channel

DOI

10.12363/issn.1001-1986.21.12.0841

Recommended Citation

HUANG Zhongzheng, JIANG Guoqing, WANG Jun, et al. (2022) "Study of advance elaborate detection with transient electromagnetic method for mine with closed poor boreholes," Coal Geology & Exploration: Vol. 50: Iss. 8, Article 17.
DOI: 10.12363/issn.1001-1986.21.12.0841
Available at: https://cge.researchcommons.org/journal/vol50/iss8/17

Reference

[1] 范立民. 煤矿隐蔽致灾因素与探查[M]. 北京：煤炭工业出版社，2014.

[2] 彭苏萍. 我国煤矿安全高效开采地质保障系统研究现状及展望[J]. 煤炭学报,2020,45(7):2331−2345. PENG Suping. Current status and prospects of research on geological assurance system for coal mine safe and high efficient mining[J]. Journal of China Coal Society,2020,45(7):2331−2345.

[3] 阮百尧,邓小康,刘海飞,等. 坑道直流电阻率超前聚焦探测新方法研究[J]. 地球物理学报,2009,52(1):289−296. RUAN Baiyao,DENG Xiaokang,LIU Haifei,et al. Research on a new method of advanced focus detection with DC resistivity in tunnel[J]. Chinese Journal of Geophysics,2009,52(1):289−296.

[4] 韩德品,李丹,程久龙,等. 超前探测灾害性含导水地质构造的直流电法[J]. 煤炭学报,2010,35(4):635−639. HAN Depin,LI Dan,CHENG Jiulong,et al. DC method of advanced detecting disastrous water–conducting or water–bearing geological structures along same layer[J]. Journal of China Coal Society,2010,35(4):635−639.

[5] 高卫富,施龙青,于小鸽,等. 矿井三维电法对封闭不良钻孔的探测[J]. 湖南科技大学学报(自然科学版),2017,32(3):6−9. GAO Weifu,SHI Longqing,YU Xiaoge,et al. Study on detection of sealed bad drilling using mine 3D DC method[J]. Journal of Hunan University of Science & Technology (Natural Science Edition),2017,32(3):6−9.

[6] 李飞,张永超,连会青,等. 掘进工作面直流电法超前探测技术问题探讨[J]. 煤炭科学技术,2020,48(12):250−256. LI Fei,ZHANG Yongchao,LIAN Huiqing,et al. Discussion on problems of direct current advance detection method in roadway driving face[J]. Coal Science and Technology,2020,48(12):250−256.

[7] 程久龙,李飞,彭苏萍,等. 矿井巷道地球物理方法超前探测研究进展与展望[J]. 煤炭学报,2014,39(8):1742−1750. CHENG Jiulong,LI Fei,PENG Suping,et al. Research progress and development direction on advanced detection in mine roadway working face using geophysical methods[J]. Journal of China Coal Society,2014,39(8):1742−1750.

[8] 于景邨,刘志新,刘树才,等. 深部采场突水构造矿井瞬变电磁法探查理论及应用[J]. 煤炭学报,2007,32(8):818−821. YU Jingcun,LIU Zhixin,LIU Shucai,et al. Theoretical analysis of mine transient electromagnetic method and its application in detecting water burst structures in deep coal stope[J]. Journal of China Coal Society,2007,32(8):818−821.

[9] 程久龙,陈丁,薛国强,等. 矿井瞬变电磁法超前探测合成孔径成像研究[J]. 地球物理学报,2016,59(2):731−738. CHENG Jiulong,CHEN Ding,XUE Guoqiang,et al. Synthetic aperture imaging in advanced detection of roadway using the mine transient electromagnetic method[J]. Chinese Journal of Geophysics,2016,59(2):731−738.

[10] 刘志新,于景邨,郭栋. 矿井瞬变电磁法在水文钻孔探测中的应用[J]. 物探与化探,2006,30(1):59−61. LIU Zhixin,YU Jingcun,GUO Dong. The application of the mining transient electromagnetic method to the exploration of hydrological borehole[J]. Geophysical & Geochemical Exploration,2006,30(1):59−61.

[11] 郭纯,刘白宙,白登海. 地下全空间瞬变电磁技术在煤矿巷道掘进头的连续跟踪超前探测[J]. 地震地质,2006,28(3):456−462. GUO Chun,LIU Baizhou,BAI Denghai. Prediction of water disasters ahead of tunneling in coal mine using continuous detection by UW TEM[J]. Seismology and Geology,2006,28(3):456−462.

[12] 刘志新,于景邨,张华,等. 小波变换在矿井瞬变电磁法中的应用[J]. 煤田地质与勘探,2007,35(4):70−71. LIU Zhixin,YU Jingcun,ZHANG Hua,et al. Application of wavelet transfer in coal mine transient electromagnetic method[J]. Coal Geology & Exploration,2007,35(4):70−71.

[13] 张军. 矿井超浅层高分辨率瞬变电磁探测技术[J]. 煤田地质与勘探,2020,48(4):219−225. ZHANG Jun. The high–resolution transient electromagnetic detection technology for ultra–shallow layer in coal mine[J]. Coal Geology & Exploration,2020,48(4):219−225.

[14] 王清虎,吴江. 煤矿井下封闭不良勘探钻孔综合探查方法与实践[J]. 煤炭科学技术,2017,45(8):228−232. WANG Qinghu,WU Jiang. Combined exploration method of poor sealing exploration borehole in underground coal mine and its practices[J]. Coal Science and Technology,2017,45(8):228−232.

[15] 姬亚东. 基于综合分析法的疑似封闭不良钻孔探查[J]. 煤矿安全,2021,52(8):83−88. JI Yadong. Exploration of suspected poorly sealed borehole based on comprehensive analysis method[J]. Safety in Coal Mines,2021,52(8):83−88.

[16] 米萨克 N. 纳比吉安. 勘查地球物理电磁法 第一卷：理论[M]. 赵经祥，王艳君，译. 北京：地质出版社，1992.

[17] 许建荣,李爱勇,杨生. TEM中心回线法瞬变磁场求取和全区视电阻率计算[J]. 地质与勘探,2008,44(6):62−68. XU Jianrong,LI Aiyong,YANG Sheng. Calculation of transient magnetic field and all time apparent resistivity based on central TEM loops method[J]. Geology and Prospecting,2008,44(6):62−68.

[18] 姜国庆,程久龙,孙晓云,等. 全空间瞬变电磁全区视电阻率优化二分搜索算法[J]. 煤炭学报,2014,39(12):2482−2488. JIANG Guoqing,CHENG Jiulong,SUN Xiaoyun,et al. Optimized binary search algorithm of full space transient electromagnetic method all−time apparent resistivity[J]. Journal of China Coal Society,2014,39(12):2482−2488.

[19] CHENG Jiulong,XUE Junjie,ZHOU Jin,et al. 2.5-D inversion of advanced detection transient electromagnetic method in full space[J]. IEEE Access,2020(8):4972−4979.

[20] 程久龙,黄少华,温来福,等. 矿井全空间三维主轴各向异性介质瞬变电磁场响应特征研究[J]. 煤炭学报,2019,44(1):278−286. CHENG Jiulong,HUANG Shaohua,WEN Laifu,et al. Response characteristics of three-dimensinal axial anisotropic media for transient electromagnetic method in underground whole-space[J]. Journal of China Coal Society,2019,44(1):278−286.