|本期目录/Table of Contents|

[1]卢方超,张学博.倾斜特厚煤层采空区孔隙率分布规律研究*[J].中国安全生产科学技术,2020,16(8):119-124.[doi:10.11731/j.issn.1673-193x.2020.08.019]
　LU Fangchao,ZHANG Xuebo.Research on porosity distribution laws of goaf in inclined extra-thick coal seam[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2020,16(8):119-124.[doi:10.11731/j.issn.1673-193x.2020.08.019]
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倾斜特厚煤层采空区孔隙率分布规律研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
16
期数:
2020年8期
页码:
119-124
栏目:
职业安全卫生管理与技术
出版日期:
2020-08-31

文章信息/Info

Title:
Research on porosity distribution laws of goaf in inclined extra-thick coal seam
文章编号:
1673-193X(2020)-08-0119-06
作者:
卢方超; 张学博
(1.河南理工大学 安全科学与工程学院，河南 焦作 454003；
2.煤炭安全生产河南省协同创新中心，河南 焦作 454003；
3.河南省瓦斯地质与瓦斯治理省部共建国家重点实验室培育基地，河南 焦作 454003)
Author(s):
LU Fangchao;  ZHANG Xuebo
(1.College of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo Henan 454003,China;
2.Coal Production Safety Collaborative Innovation Center in Henan Province,Jiaozuo Henan 454003,China;
3.State Key Laboratory Cultivation Base for Gas Geology and Gas Control,Henan Polytechnic University,Jiaozuo Henan 454003,China)
关键词:
倾斜; 特厚煤层; UDEC; 下沉量; 采空区孔隙率
Keywords:
inclination;  extra-thick coal seam;  UDEC;  subsidence amount;  goaf porosity
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2020.08.019
文献标志码:
A
摘要:
为了研究倾斜特厚煤层综放开采采空区孔隙率分布规律，确定采空区高位钻孔位置，有效治理采空区瓦斯灾害，以硫磺沟煤矿9-15（06）工作面为例，采用UDEC数值模拟软件研究采空区覆岩垮落和裂隙演化规律，根据采空区覆岩下沉量，计算得到采空区孔隙率三维分布规律。研究结果表明：倾斜特厚煤层采空区覆岩位移云图在垂直方向呈3段分布，以距离工作面底板23 m和80 m为分界线，位移矢量密度显著降低，冒落带高度为23 m，与经验公式25 m基本一致，大于薄、中厚和厚煤层；受倾角影响，垮落矸石滑移、充填采空区下端，覆岩下沉量呈非对称椭圆形，中上部下沉量最大；冒落带孔隙率在上、下隅角处最大，中上部最小，随着覆岩高度增加，采空区边缘处和深部孔隙率差值逐渐减小。研究结果为倾斜特厚煤层采空区瓦斯抽采高位钻孔的布置提供了理论基础。
Abstract:
In order to study the distribution laws of porosity in the goaf of fully mechanized top coal caving in the inclined extra-thick coal seam,determine the location of highlevel borehole in goaf,and effectively control the gas disasters in goaf,taking the 9-15(06) working face of the Liuhuanggou coal mine as an example,the UDEC numerical simulation software was used to study the evolution laws of overburden strata collapse and fissures in the goaf,and the three-dimensional distribution laws of porosity in the goaf were obtained according to the subsidence amount of overburden strata in goaf.The results showed that the cloud map of overburden strata displacement in the goaf of inclined extra-thick coal seam presented the three-section distribution in the vertical direction,with 23 m and 80 m above the floor of working face as the dividing lines.The displacement vector density decreased significantly,and the height of caving zone was 23 m,which was basically consistent with the empirical formula of 25 m and larger than thin,medium-thick and thick coal seams.Affected by the dip angle,the collapsed gangue slipped and filled the lower goaf,and the subsidence amount of overburden strata presented the asymmetrical ellipse shape,and the subsidence amount of the middle and upper part was the largest.The maximum porosity of the caving zone located at the upper and bottom corner,and the minimum porosity located at the middle and upper part.As the height of overburden strata increased,the difference in porosity between the edge and the deep part of goaf gradually decreased.The results provide theoretical basis for the layout of high-level boreholes for gas drainage in the goaf of inclined and extra-thick coal seams.

参考文献/References:

［1］马恒,王祥宇,张遵国.高抽巷治理采空区瓦斯层位研究［J］.中国安全生产科学技术,2019,15(1):81-87. MA Heng,WANG Xiangyu,ZHANG Zunguo.Study on horizon of gas treatment in goaf with high drainage roadway［J］.Journal of Safety Science and Technology,2019,15(1):81-87.
［2］孙波,张向阳,涂敏.深井大采高综采面矿压显现及覆岩破断规律研究［J］.中国安全生产科学技术,2018,14(2):119-125. SUN Bo,ZHANG Xiangyang,TU Min.Study on strata behaviors and overburden strata breaking laws of fully mechanized mining face with large mining height in deep mines ［J］.Journal of Safety Science and Technology,2018,14(2):119-125.
［3］MAJDI A,HASSANI F P,NASIRI M Y.Prediction of the height of destressed zone above the mined panel roof in longwall coal mining ［J］.International Journal of Coal Geology,2012,98:62-72.
［4］JU J,XU J.Structural characteristics of key strata and strata behaviour of a fully mechanized longwall face with 7.0 m height chocks ［J］.International Journal of Rock Mechanics and Mining Sciences,2013,58:46-54.
［5］REZAEI M,HOSSAINI M F,MAJDI A.A time-independent energy model to determine the height of destressed zone above the mined panel in longwall coal mining ［J］.Tunnelling and Underground Space Technology,2015,47:81-92.
［6］WANG G,WU M,WANG R,et al.Height of the mining-induced fractured zone above a coal face ［J］.Engineering Geology,2017,216:140-152.
［7］钱鸣高,缪协兴,许家林.岩层控制中的关键层理论研究［J］.煤炭学报,1996,21(3):2-7. QIAN Minggao,MIAO Xiexing,XU Jialin.Theoretical study of key stratum in ground control ［J］.Journal of China Coal Society,1996,21(3):2-7.
［8］钱鸣高,许家林.覆岩采动裂隙分布的“O”形圈特征研究［J］.煤炭学报,1998,23(5):20-23. QIAN Minggao,XU Jialin.Study on the “O-shape” circle distribution characteristics of mining-induced fractures in the overlaying strata ［J］.Journal of China Coal Society,1998,23(5):20-23.
［9］袁亮.我国深部煤与瓦斯共采战略思考［J］.煤炭学报,2016,41(1):1-6. YUAN Liang.Strategic thinking of simultaneous exploitation of coal and gas in deep mining ［J］.Journal of China Coal Society,2016,41(1):1-6.
［10］李树刚,徐培耘,赵鹏翔,等.采动裂隙椭抛带时效诱导作用及卸压瓦斯抽采技术［J］.煤炭科学技术,2018,46(9):146-152. LI Shugang,XU Peiyun,ZHAO Pengxiang,et al.Aging induced effect of elliptic paraboloid zone in mining cracks and pressure released gas drainage technique ［J］.Coal Science and Technology,2018,46(9):146-152.
［11］高建良,陈帅.采空区上覆岩层“三带”划分数值模拟［J］.安全与环境学报,2016,16(1):36-39. GAO Jianliang,CHEN Shuai.Numerical simulation for the “three zones” division in the overlaying rocks of the goaf ［J］.Journal of Safety and Environment,2016,16(1):36-39.
［12］尹光志,李星,韩佩博,等.三维采动应力条件下覆岩裂隙演化规律试验研究［J］.煤炭学报,2016,41(2):406-413. YIN Guangzhi,LI Xing,HAN Peibo,et al.Experimental study on overburden strata fracture evolution law in three dimensional mine-induced stress conditions［J］.Journal of China Coal Society,2016,41(2):406-413.
［13］肖家平,杨科,刘帅,等.大倾角煤层开采覆岩破断机制研究［J］.中国安全生产科学技术,2019,15(3):75-80. XIAO Jiaping,YANG Ke,LIU Shuai,et al.Study on breaking mechanism of overlying strata in deeply inclined coal seam［J］.Journal of Safety Science and Technology,2019,15(3):75-80.
［14］张宏伟,朱峰,盛继权,等.多手段综合分析特厚煤层分层开采覆岩破坏高度［J］.中国安全生产科学技术,2016,12(1):11-16. ZHANG Hongwei,ZHU Feng,SHENG Jiquan,et al.Multiple means comprehensive analysis on failure height of overburden strata in slicing mining of ultra thick coal seam［J］.Journal of Safety Science and Technology,2016,12(1):11-16.
［15］徐刚,王云龙,张天军,等.厚煤层采动覆岩裂隙分布特征及卸压瓦斯抽采技术［J］.煤矿安全,2020,51(1):150-155. XU Gang,WANG Yunlong,ZHANG Tianjun,et al.Fracture distribution characteristics of mining-induced overburden in thick coal seam and pressure relief gas extraction technology［J］.Safety in Coal Mines,2020,51(1):150-155.
［16］张学博,程红军,靳晓敏.综采面采空区孔隙率分布规律数值研究［J］.工业安全与环保,2015,41(9):28-30. ZHANG Xuebo,CHENG Hongjun,JIN Xiaomin.Numerical study on goaf porosity distribution in fully mechanized face ［J］.Industrial Safety and Environmental Protection,2015,41(9):28-30.
［17］双海清.缓倾斜煤层采动卸压瓦斯储运优势通道演化机理及应用［D］.西安:西安科技大学,2017.

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备注/Memo

备注/Memo:
收稿日期： 2020-04-29；网络首发日期： 2020-08-27
* 基金项目： 国家重点研发计划项目（2018YFC0808103）；国家自然科学基金项目（51734007,51704099，51604101）；河南省高等学校重点科研计划项目（19A440003）；河南省高校基本科研业务费专项资金项目（NSFRF180338）；河南理工大学博士基金项目（B2019-56）
作者简介： 卢方超，博士研究生，主要研究方向为瓦斯灾害预测与防治。
通信作者： 张学博，博士，副
更新日期/Last Update: 2020-09-10