Coal Geology & Exploration


Mine radio wave exploration can be used for coal seam geological structure exploration. With its advantages of portability and good effect, it has become a conventional and necessary means for coal seam geological structure exploration. At present, the energy attenuation of radio wave signal in coal seam is fast, and the transmission radio wave detection of working face is restricted in large width coal seam. On this basis, the radio wave reflection exploration method of coal seam working face is proposed. Firstly, the electric model of two-dimensional coal measure strata is constructed by numerical simulation to analyze the field strength value of radio wave Hx component signal. The experimental results show that the attenuation of the Hx component signal in the normal coal seam roadway is approximately linear with the propagation distance, which lays a theoretical foundation for the radio wave reflection imaging algorithm. Secondly, fault anomaly areas are set at 5, 10, 15, 20, 25 and 30 m away from roadway in the model. Compared with the normal coal seam, the Hx component field strength value has a mutation at the fault. The field strength value increases first and then decreases, and the over all reflected field strength value decreases with the increase of the distance between the fault and the roadway. When the fault is 25 m away from the roadway, the field strength value change is not obvious. Finally, the field experiment was carried out in a coal mine working face. The experiment uses the frequency of 0.965 MHz to detect the radio wave reflection of the whole roadway. In the detection results, the field strength value of radio wave near the geological anomaly is abnormally high, showing an obvious superposition of direct wave and reflection wave. The abnormal field value agrees well with the fault position from the actual mining verification data, and the experiment has achieved good results. In summary, the attenuation of field strength value of radio wave in normal coal seam roadway is approximately linear with the propagation distance. When there is any geological structural anomaly in the working face, the superposition of direct wave and reflected wave will occur, and the field value will jump up. It is feasible and effective to detect geological anomalies by reflection radio wave method, which provides a new method and idea for geological structure exploration in coal seam working face.


radio wave exploration, coal seam geological structure, reflected radio wave, numerical simulation of radio wave




[1] 周吉光,张举钢,丁欣,等. 油气资源供给能力约束下未来中国煤炭资源开采总量控制指标测度[J]. 河北地质大学学报,2020,43(6):101−112. ZHOU Jiguang,ZHANG Jugang,DING Xin,et al. Measurement of the total control amount of China’s coal resource exploitation in the future under the constraints of oil and gas resource supply capacity[J]. Journal of Hebei GEO University,2020,43(6):101−112.

[2] 彭苏萍,张博,王佟. 我国煤炭资源“井”字形分布特征与可持续发展战略[J]. 中国工程科学,2015,17(9):29−35. PENG Suping,ZHANG Bo,WANG Tong. China’s coal resources:Octothorpe shaped distribution characteristics and sustainable development strategies[J]. Engineering Sciences,2015,17(9):29−35.

[3] 吴立新,汪云甲,丁恩杰,等. 三论数字矿山:借力物联网保障矿山安全与智能采矿[J]. 煤炭学报,2012,37(3):357−365. WU Lixin,WANG Yunjia,DING Enjie,et al. Thirdly study on digital mine:Serve for mine safety and intellimine with support from IoT[J]. Journal of China Coal Society,2012,37(3):357−365.

[4] 袁亮,张平松. 煤炭精准开采地质保障技术的发展现状及展望[J]. 煤炭学报,2019,44(8):2277−2284. YUAN Liang,ZHANG Pingsong. Development status and prospect of geological guarantee technology for precise coal Mining[J]. Journal of China Coal Society,2019,44(8):2277−2284.

[5] 卢新明,阚淑婷. 煤炭精准开采地质保障与透明地质云计算技术[J]. 煤炭学报,2019,44(8):2296−2305. LU Xinming,KAN Shuting. Geological guarantee and transparent geological cloud computing technology of precision coal mining[J]. Journal of China Coal Society,2019,44(8):2296−2305.

[6] STOLARCZYK L G,PENG S S,LUO Y. Imaging ahead of mining with Radio Imaging Method(RIM-IV) instrumentation and three-dimensional tomography[C]//Software Proceedings of 22nd International Conference on Ground Control in Mining,2003,Morgantown,WV,2003:136−143.

[7] HUSSAIN N,KARSITI M,IQBAL A. Forward modeling to study topography effects on EM signal using FEM[C]//IEEE 2011 Nationnal Postgraduate Conference(NPC),Peak,Malaysiac(2011.09.19−2011.09.20). DOI:10.1109/NatPc.2011.6136327.

[8] LI Y,SMITH R S. Forward modeling of radio imaging(RIM) data with the Comsol RF module[J]. Computers & Geosciences,2015,85(PA):60−67.

[9] RANJAN A,MISRA P,DWIVEDI B,et al. Studies on propagation characteristics of radio waves for wireless networks in underground coal mines[J]. Wireless Personal Communications,2017,97:2819−2832.

[10] LAVU S,MCHUGH R,SANGSTER A J,et al. Radio-wave imaging in a coal seam waveguide using a pre-selected enforced resonant mode[J]. Journal of Applied Geophysics,2011,75(2):171−179.

[11] 刘志新,刘树才,王东伟. 坑道无线电波透视相位层析成像技术[J]. 中国有色金属学报,2013,23(9):2371−2378. LIU Zhixin,LIU Shucai,WANG Dongwei. Phase tomography technology of tunnel radio wave perspective[J]. The Chinese Journal of Nonferrous Metals,2013,23(9):2371−2378.

[12] 于业斌,岳建华,邓帅奇. 高阻层状煤质中电磁波传播特性研究[J]. 工程地球物理学报,2011,8(4):412−416. YU Yebin,YUE Jianhua,DENG Shuaiqi. Electromagnetic wave propagation characteristics in high resistivity coal seam[J]. Chinese Journal of Engineering Geophysics,2011,8(4):412−416.

[13] 刘鑫明,刘树才,姜志海,等. 基于改进振幅衰减常数的无线电波透视层析成像研究[J]. 地球物理学进展,2013,28(2):980−987. LIU Xinming,LIU Shucai,JIANG Zhihai,et al. Study on the tomography of radio-wave penetration based onimproved amplitude attenuation constant[J]. Progress in Geophysics,2013,28(2):980−987.

[14] 张辉,潘冬明,刘朋,等. 模拟分析初始场强对坑透反演结果的影响[J]. 地球物理学进展,2016,31(6):2788−2795. ZHANG Hui,PAN Dongming,LIU Peng,et al. Simulation and analysis of the influence of initial field intensity on the inversion results[J]. Progress in Geophysics,2016,31(6):2788−2795.

[15] 肖玉林,吴荣新,张平松,等. 无线电波透视场强增量法在煤层工作面坑透探测中的应用[J]. 矿业安全与环保,2016,43(5):36−40. XIAO Yulin,WU Rongxin,ZHANG Pingsong,et al. Application of radio wave penetration field strength increment method in detection by coal face roadway[J]. Mining Safety & Environmental Protection,2016,43(5):36−40.

[16] 吴荣新,沈国庆,王汉卿,等. 综采工作面薄煤区无线电波多频率透视精细探测[J]. 煤田地质与勘探,2020,48(4):34−40. WU Rongxin,SHEN Guoqing,WANG Hanqing,et al. Multi frequency perspective fine detection of radio wave for thin coal areas in fully mechanized coal face[J]. Coal Geology & Exploration,2020,48(4):34−40.

[17] 刘俊,赵伟,韩必武. 淮南矿区高精度三维地震勘探技术应用[J]. 煤田地质与勘探,2020,48(6):8−14. LIU Jun,ZHAO Wei,HAN Biwu. Application of high-Precision 3D seismic exploration on technology in Huainan mining area[J]. Coal Geology & Exploration,2020,48(6):8−14.

[18] 吕华新,崔伟雄,伏正清,等. 采煤工作面槽波相对透射系数层析成像技术[J]. 煤田地质与勘探,2017,45(3):147−150. LYU Huaxin,CUI Weixiong,FU Zhengqing,et al. Tomography technique of relative transmission coefficient of in-seam wave in coal mining face[J]. Coal Geology & Exploration,2017,45(3):147−150.

[19] 刘盛东,刘静,岳建华. 中国矿井物探技术发展现状和关键问题[J]. 煤炭学报,2014,39(1):19−25. LIU Shengdong,LIU Jing,YUE Jianhua. Development status and key problems of Chinese mining geophysical technology[J]. Journal of China Coal Society,2014,39(1):19−25.

[20] 刘鑫明. 煤岩介质中中高频电磁波传播规律研究[D]. 徐州:中国矿业大学,2013.

LIU Xinming. Research the propagation rules ofmiddle-high frequency electromagnetic wave in coal medium[D]. Xuzhou:China University of Mining and Technology,2013.

[21] GIANNOPOULOS A. The investigation of transmission-line matrix and finite-difference time-domain methods for the forward problem of ground probing radar[D]. York,UK:University of York,1997.

[22] YEE K S. Numerical solution of initial boundary value problems involving Maxwell equations in isotropic media[J]. Anten-nas Propagat,1966,14(3):302−307.



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