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[1]谷拴成,张志飞,杨超凡,等.考虑煤岩体成拱效应的工作面区段煤柱合理尺寸研究[J].中国安全生产科学技术,2021,17(9):77-83.[doi:10.11731/j.issn.1673-193x.2021.09.012]
　GU Shuancheng,ZHANG Zhifei,YANG Chaofan,et al.Study on reasonable size of coal pillars in working face section considering arching effect of coal and rock mass[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(9):77-83.[doi:10.11731/j.issn.1673-193x.2021.09.012]
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考虑煤岩体成拱效应的工作面区段煤柱合理尺寸研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
17
期数:
2021年9期
页码:
77-83
栏目:
职业安全卫生管理与技术
出版日期:
2021-09-30

文章信息/Info

Title:
Study on reasonable size of coal pillars in working face section considering arching effect of coal and rock mass
文章编号:
1673-193X(2021)-09-0077-07
作者:
谷拴成; 张志飞; 杨超凡; 袁增云; 霍小泉
（1.西安科技大学 建筑与土木工程学院，陕西 西安 710054;
2.陕西陕煤铜川矿业有限公司，陕西 铜川 727000）
Author(s):
GU Shuancheng;  ZHANG Zhifei;  YANG Chaofan;  YUAN Zengyun;  HUO Xiaoquan
(1.School of Architecture and Civil Engineering,Xi’an University of Science and Technology,Xi’an Shaanxi 710054,China;
2.SHCCIG Tongchuan Mining Co.,Ltd.,Tongchuan Shaanxi 727000,China)
关键词:
成拱效应; 煤柱; 塑性区; 绕流; 采空区
Keywords:
arching effect;  coal pillar;  plastic zone;  bypass flow;  goaf
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2021.09.012
文献标志码:
A
摘要:
为研究综采工作面面间煤柱留设宽度及加固范围，以陕西铜川玉华煤矿一采区为工程背景，首先建立采空区上覆岩土体自重荷载向煤柱传递的传力拱模型，通过求解传力拱模型，对采空区上覆岩土体荷载向煤柱的传递机理进行分析研究。再结合极限平衡理论与刚塑性理论，给出煤柱最小留设宽度与煤帮加固范围计算式。进一步对传力拱影响范围的各参数进行分析，结果表明：当开采宽度小于临界值，煤柱留设宽度随工作面埋深、工作面倾向长度增大而增大，随顶板材料黏聚力、内摩擦角的增大而减小；开采宽度超过临界值时，作用在煤柱上的荷载发生绕流现象。最后根据研究结果进行工程验证，巷道表面位移观测结果说明所设计的煤柱尺寸合理可靠。研究结果对类似开采条件下的区段煤柱宽度确定具有参考意义。
Abstract:
To study the setting width and reinforcement range of coal pillars between the fully mechanized mining faces,taking No.1 mining area of Yuhua coal mine in Tongchuan,Shaanxi as the engineering background,a force-transfer arch model for the transfer of the weight load of overlying rock and soil upon the goaf to the coal pillar was established,and by solving the force-transfer arch model,the transfer mechanism of the load of overlying rock and soil to the coal pillar was analyzed and studied.Combined with the limit equilibrium theory and the rigid plastic theory,the calculation formulas for the minimum setting width of coal pillar and the reinforcement range of coal side were given.Further,the parameters of the influence range of force-transfer arch were analyzed.The results showed that when the mining width was less than the critical value,the setting width of coal pillar increased with the increase of the buried depth and inclined length of working face,while decreased with the increase of the cohesion force of roof material and angle of internal friction.When the mining width exceeded the critical value,the bypass flow occurred for the load acting on the coal pillar.Finally,according to the research results,the engineering verification was carried out,and the observation results of the roadway surface displacement indicated that the designed coal pillar size was reasonable and reliable.The research results have reference significance for the determination of the sectional coal pillar width under similar mining conditions.

参考文献/References:

［1］蒋子龙.采空区矸石压实效应下煤柱支承压力分布规律研究［D］.泰安:山东科技大学,2018.
［2］贾光胜,康立军.综放开采采准巷道护巷煤柱稳定性研究［J］.煤炭学报,2002,27(1):6-10. JIA Guangsheng,KANG Lijun.Study on the chainpillar stability of the developing entry in longwall top coal mining［J］.Journal of China Coal Society,2002,27(1):6-10.
［3］吴立新,王金庄.煤柱宽度的计算公式及其影响因素分析［J］.矿山测量,1997(1):12-16. WU Lixin,WANG Jinzhuang.Pillar width calculation formula and analysis of influential factors［J］.Mine Survey,1997(1):12-16.
［4］邹友峰,柴华彬.我国条带煤柱稳定性研究现状及存在问题［J］.采矿与安全工程学报,2006,23(2):141-145，150. ZOU Youfeng,Chai Huabin.Research status of strip coal pillar stability and its main problems in China ［J］.Journal of Mining ＆ Safety Engineering,2006,23( 2):141-145，150.
［5］距锦茂.近距离煤层回采巷道过上覆采空区及煤柱支护技术研究［D］.太原：太原理工大学，2018.
［6］谢和平,段发兵,周宏伟,等.条带煤柱稳定性理论与分析方法研究进展［J］.中国矿业,1998,7( 5):37-41. XIE Heping,DUAN Fabing,ZHOU Hongwei,et al.Recent developments of thoery and analysis methods of strip pillar stability ［J］.China Mining Magazine,1998,7( 5):37-41.
［7］薛康生,付宝杰.沿空掘巷煤柱合理宽度研究与应用［J］.地下空间与工程学报,2018,14(S1):403-408,438. XUE Kangsheng,FU Baojie.Study and application of rational width of coal pillar in roadway driving along goaf ［J］.Chinese Journal of Underground Space and Engineering,2018,14(S1):403-408,438.
［8］WILSON A H.An hypothesis concerning pillar stability ［J］.Mining Engineer,1972,131（6）：409-417.
［9］于洋,柏建彪,陈科,等.综采工作面沿空掘巷窄煤柱合理宽度设计及其应用［J］.煤炭工程,2010,42(7):6-9. YU Yang,BAI Jianbiao,CHEN Ke,et al.Design and application of proper width of narrow pillar during gobside entry driving at fully mechanized mining face ［J］.Coal Engineering,2010,42(7):6-9
［10］李洪武.综放开采区段煤柱应力分布及其尺寸优化［J］.煤炭科学技术,2007,35(8):39-42. LI Hongwu.Coal pillar stress distribution and its size optimization in fully mechanized caving mining section ［J］.Coal Science and Technology,2007,35(8):39-42.
［11］张若宇,金元甲.充填开采上覆岩层裂隙拱结构研究［J］.现代矿业,2014 (11):38-40. ZHANG Ruoyu,JIN Yuanjia.Research on the cracked arch structure of the overlying rock by filling mining ［J］.Modern Mining,2014 (11):38-40.
［12］李廉锟.结构力学［M］.北京:高等教育出版社,2017.
［13］张振南,茅献彪,葛修润.松散岩块侧限压缩模量的试验研究［J］.岩石力学与工程学报,2004,23(18):3049-3054. ZHANG Zhennan,MAO Xianbiao,GE Xiurun.Testing study on compressive modulus of loose rock blocksunder confining constraint ［J］.Chinese Journal of Rock Mechanics and Engineering,2004,23 (18):3049-3054.
［14］杨雪强,何世秀,庄心善.土木工程中的成拱效应［J］.湖北工学院学报，1994，9(1):1-7. YANG Xueqiang,HE Shixiu,ZHUANG Xinshan.Arching effect in civil engineering［J］.Journal of Hubei Polytechnic University,1994,9(1):1-7.
［15］杨达明,郭文兵,于秋鸽,等.浅埋近水平煤层采场覆岩压力拱结构特性及演化机制分析［J］.采矿与安全工程学报,2019,36(2):323-330. YANG Daming,GUO Wenbing,YU Qiuge,et al.Structural characteristics and evolution mechanism of overlying rock pressure arch in shallow buried near horizontal coal seam ［J］.Journal of Mining & Safety Engineering,2019,36(2):323-330.

相似文献/References:

备注/Memo

备注/Memo:
收稿日期： 2021-04-21
作者简介： 谷拴成，博士，教授，主要研究方向为巷道围岩支护理论。
通信作者： 张志飞,硕士研究生,主要研究方向为巷道围岩支护理论。
更新日期/Last Update: 2021-10-02