Interpretation method of high density 3D seismic depth domain data in coal mining districts

Authors

MENG Fanbin, Research Institute of coal Geophysical Exploration, China National Administration of Coal Geology, Zhuozhou 072750, China

Abstract

The development height of the water conducting fractured zone is one of the important technical parameters for mine water hazards prediction. In this paper, the combined well-surface microseismic monitoring technology was used to analyze the development characteristics of the water conducting fractured zone in working face 4103 in Wenjiapo coal mine. The results showed that for deep buried coal seams, the microseismic events occured in the advance mining face with advanced influence angle ranging from the minimum of 28° to the maximum of 35°. The stability of overburden decreased due to the faults. Thus, compared with normal bedrock, the overburden rock was easier to cause stress concentration and rock failure under the influence of coal mining. The distance between the microseismic event location and mining position increased affected by the fault, and the high density distribution area of the microseismic events shifted to the goaf, which aggravated the degree of overburden failure and increased the water conducting fractured zone height. In vertical direction, the high density area of microseismic events in the monitoring area of working face 4103 ranged from +400 m to +520 m. Combined with the number and the energy distribution characteristics of microseismic events, it could be concluded that the development height of caving zone in working face 4103 was 50 m, and the ratio of caving to mining was 13.16. The development height of water-conducting fractured zone was 117 m, and the ratio of fracturing to mining was 30.79. The results could provide an important basis for the analysis of water conducting fractured zone height of deep coal seam and the prevention of roof mine water disaster in Binchang mining area.

Keywords

combined well-surface microseismic monitoring, microseismic events, water-conducting fractured zone, overburden failure characteristics, Wenjiapo coal mine

DOI

10.3969/j.issn.1001-1986.2020.06.011

Recommended Citation

M. (2020) "Interpretation method of high density 3D seismic depth domain data in coal mining districts," Coal Geology & Exploration: Vol. 48: Iss. 6, Article 12.
DOI: 10.3969/j.issn.1001-1986.2020.06.011
Available at: https://cge.researchcommons.org/journal/vol48/iss6/12

Reference

[1] 罗银河,刘江平,俞国柱. 叠前深度偏移述评[J]. 物探与化探,2004,28(6):540-545. LUO Yinhe,LIU Jiangping,YU Guozhu. A review on the prestack depth migration[J]. Geophysical & Geochemical Exploration,2004,28(6):540-545.
[2] 冯新林. 叠前深度偏移地震资料处理:以LN区块为例[J]. 甘肃科技,2019,35(10):41-43. FENG Xinlin. Seismic data processing of prestack depth migration:A case study of LN block[J]. Gansu Science and Technology,2019,35(10):41-43.
[3] 程彦. 小尺度曲率属性在煤田小微构造解释中的应用[J]. 煤田地质与勘探,2020,48(1):203-207. CHENG Yan. Application of small scale curvature in small and micro-structure interpretation of coal field[J]. Coal Geology & Exploration,2020,48(1):203-207.
[4] 宁宏晓,唐东磊,皮红梅,等. 国内陆上"两宽一高"地震勘探技术及发展[J]. 石油物探,2019,58(5):645-653. NING Hongxiao,TANG Donglei,PI Hongmei,et al. The technology and development of "WBH" seismic exploration in land,China[J]. Geophysical Prospecting for Petroleum,2019,2019,58(5):645-653.
[5] 韩帅. 泌阳凹陷某区块变速构造成图方法研究[D]. 西安:西安石油大学,2014. HAN Shuai. The research of variable velocity structure mapping methods in X area of Biyang depression[D]. Xi'an:Xi'an Shiyou University,2014.
[6] 张雪建,梁锋,王桂玲. 深度域合成地震记录的制作方法研究[J]. 石油地球物理勘探,2000,35(3):377-380. ZHANG Xuejian,LIANG Feng,WANG Guiling. A method for synthesizing seismogram in depth domain[J]. Oil Geophysical Prospecting,2000,35(3):377-380.
[7] 何惺华. 深度域地震资料若干问题初探[J]. 石油物探,2004,43(4):353-358. HE Xinghua. Discussion on seismic data of depth domain[J]. Geophysical Prospecting for Petroleum,2004,43(4):353-358.
[8] 郝晓红,晏玉环. 深度域地震资料解释探讨[J]. 海洋石油,2014,34(2):20-24. HAO Xiaohong,YAN Yuhuan. Seismic data interpretation after PSDM in depth domain[J]. Offshore Oil,2014,34(2):20-24.
[9] 周赏,汪关妹,张万福,等. 深度域地震资料解释技术应用及效果[J]. 石油地球物理勘探,2017,52(增刊1):92-98. ZHOU Shang,WANG Guanmei,ZHANG Wanfu,et al. Depth-domain seismic data interpretation[J]. Oil Geophysical Prospecting,2017,52(Sup.1):92-98.
[10] 韩必武,孙宇菲. 深度域地震资料PCA属性融合技术在淮南DJ矿的应用[J]. 河南科技,2020(1):79-81. HAN Biwu,SUN Yufei. The Application of deep seismic data PCA attribute fusion technology in Huainan DJ mine[J]. Henan Science and Technology,2020(1):79-81.
[11] 高强山. 基于随机回归森林的储层预测方法研究[D]. 东营:中国石油大学(华东),2017. GAO Qiangshan. Reservoir prediction method based on stochastic regression forest[D]. Dongying:China University of Petroleum(East China),2017.
[12] 郭强,张晓英. 人工合成记录在地震勘探资料解释中的应用[J]. 陕西煤炭,2011(6):92-93. GUO Qiang,ZHANG Xiaoying. Application of synthetic records in seismic exploration data interpretation[J]. Shaanxi Coal,2011(6):92-93.
[13] 彭军,周家雄,王宇,等. 基于褶积理论的深度域地震资料反演[J]. 科学技术与工程,2014,14(19):40-45. PENG Jun,ZHOU Jiaxiong,WANG Yu,et al. Depth domain seismic inversion base on convolution theory[J]. Science Technology and Engineering,2014,14(19):40-45.
[14] 刘俊,孙宇菲. 叠前深度偏移技术在煤炭地震勘探中的应用[J]. 河南科技,2020(1):70-72. LIU Jun,SUN Yufei. Application of prestack depth migration technology in DJ mine[J]. Henan Science and Technology,2020(1):70-72.
[15] 戴永寿,张彧豪,张鹏,等. 时变地震子波提取研究方法综述[J]. 石油物探,2020,59(2):169-176. DAI Yongshou,ZHANG Yuhao,ZHANG Peng,et al. A review on time-varying seismic wavelet extraction[J]. Geophysical Prospecting for Petroleum,2020,59(2):169-176.
[16] 高远,王琦,董守华,等. 煤田三维地震叠前深度偏移技术及其应用[J]. 煤田地质与勘探,2011,39(3):71-73. GAO Yuan,WANG Qi,DONG Shouhua,et al. The technology of coal 3D prestack depth migration and its applications[J]. Coal Geology & Exploration,2011,39(3):71-73.
[17] 陈可洋,赵宝山,李永臣. 一种基于时不变褶积的深度域合成地震记录制作方法[J]. 中国海上油气,2016,28(4):35-41. CHEN Keyang,ZHAO Baoshan,LI Yongchen. A creation method of synthetic seismic record in depth domain based on time invariant convolution[J]. China Offshore Oil and Gas,2016,28(4):35-41.
[18] 张杰. 深度域地震子波提取方法研究[D]. 成都:成都理工大学,2018. ZHANG Jie. Research on seismic wavelet estimation in depth domain[D]. Chengdu:Chengdu University of technology,2018.
[19] 朱宝山. 子波整形反褶积在提高地震资料分辨率中的研究与应用[D]. 西安:长安大学,2013. ZHU Baoshan. The research and application of shaping wavelet deconvolution to improve the resolution of seismic data[D]. Xi'an:Chang'an University,2013.
[20] 杨国权,王永刚,朱兆林,等. 井间地震资料层位标定方法研究[J]. 石油物探,2005,44(3):217-219. YANG Guoquan,WANG Yonggang,ZHU Zhaolin,et al. Stratigraphic calibration method for seismic cross hole data[J]. Geophysical Prospecting for Petroleum,2005,44(3):217-219.
[21] 李宏堂. 基于Euclid子波提取的地震高分辨处理方法研究[D]. 西安:长安大学,2012. LI Hongtang. Research to high-resolution seismic processing based on euclid wavelet estimation[D]. Xi'an:Chang'an University,2012.
[22] 张帅. 基于方向场的广义反褶积方法研究与应用[D]. 东营:中国石油大学(华东),2011. ZHANG Shuai. Research and application of a method of eneralized deconvolution based on direction field[D]. Dongying:China university of Petroleum(East China),2011
[23] 吴明华,吴清岭,李文艳. 叠前深度偏移资料解释方法研究[J].石油物探,2004,43(4):331-336. WU Minghua,WU Qingling,LI Wenyan. Data interpretation on prestack depth-migration section[J]. Geophysical Prospecting for Petroleum,2004,43(4):331-336.