端帮开采支撑煤柱失稳演化机制试验研究*

doi:10.16265/j.cnki.issn1003-3033.2021.10.013

中国安全科学学报 ›› 2021, Vol. 31 ›› Issue (10): 89-96.doi: 10.16265/j.cnki.issn1003-3033.2021.10.013

端帮开采支撑煤柱失稳演化机制试验研究^*

姜聚宇¹ 讲师, 杨慧雯¹, 王东¹ 教授, 王来贵² 教授, 韩新平¹ 教授

1 辽宁工程技术大学矿业学院,辽宁阜新 123000;
2 辽宁工程技术大学力学与工程学院,辽宁阜新 123000

收稿日期:2021-07-22 修回日期:2021-09-11 出版日期:2021-10-28 发布日期:2022-04-28
作者简介:姜聚宇 (1989—),男,黑龙江齐齐哈尔人,博士,讲师,主要从事端帮开采及边坡工程等方面的研究。E-mail:343900949@qq.com。
基金资助:
国家自然科学基金资助(51874160);辽宁省“百千万人才工程”项目;辽宁工程技术大学学科创新团队项目(LNTU20TD-01)

Experimental study on instability evolution mechanism of rib pillars during highwall mining

JIANG Juyu¹, YANG Huiwen¹, WANG Dong¹, WANG Laigui², HAN Xinping¹

1 College of Mines, Liaoning Technical University, Fuxin Liaoning 123000, China;
2 School of Mechanics & Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China

Received:2021-07-22 Revised:2021-09-11 Online:2021-10-28 Published:2022-04-28

摘要/Abstract

摘要： 为研究端帮开采过程中支撑煤柱稳定性演化特征,基于突变理论,推导支撑煤柱失稳判据,采用相似材料模拟试验,研究不同宽度支撑煤柱在回采及分级加载过程中,竖向应力分布形态、演化机制及两者与煤柱失稳关系,通过数值模拟验证试验结果。研究结果表明:当屈服区宽度超过煤柱宽度88%,煤柱将发生失稳;回采过程中煤柱竖向应力呈马鞍形分布,处于稳定状态;分级加载过程中,煤柱宽度由小到大依次发生剪切破坏,煤柱中部竖向应力出现突增,视为失稳前兆,可将竖向应力突变拐点作为失稳预警判据;试验中煤柱稳定性与数值模拟结果基本一致,验证了试验结果的合理性与可靠性。

关键词: 端帮开采, 支撑煤柱, 煤柱失稳, 突变理论, 相似材料模拟

Abstract: In order to study stability evolution mechanism of rib pillars during highwall mining, based on catastrophe theory, criteria for instability of coal pillars were derived. Secondly, similar material simulating experiment was conducted to study vertical stress's distribution pattern and evolution as well as their relationship with instability of coal pillars with different widths during coal mining and staged loading. Finally, test results were verified through numerical simulation. The results show that when the ratio of yield zone width to pillar width is greater than 88%, coal pillars will undergo instability failure. During mining process, distribution of vertical stress is in a saddle shape, which ensures a stable state. In the process of staged loading, coal pillars will see shear failure in turn from a small width to a large one, and vertical stress in the middle increases sharply, which is a precursor to a failure. The abrupt inflection point of vertical stress can be taken as a pre-warning criterion for coal pillar instability in engineering practice. It is also found that test results of stability are basically consistent numerical simulation ones, which verifies the rationality and reliability of the experiment results.

Key words: highwall mining, rib pillar, coal pillar instability, catastrophe theory, similar material simulation

中图分类号:

X936

姜聚宇, 杨慧雯, 王东, 王来贵. 端帮开采支撑煤柱失稳演化机制试验研究^*[J]. 中国安全科学学报, 2021, 31(10): 89-96.

JIANG Juyu, YANG Huiwen, WANG Dong, WANG Laigui, HAN Xinping. Experimental study on instability evolution mechanism of rib pillars during highwall mining[J]. China Safety Science Journal, 2021, 31(10): 89-96.

参考文献

[1] 才庆祥, 周伟, 舒继森, 等. 大型近水平露天煤矿端帮边坡时效性分析及应用[J]. 中国矿业大学学报, 2008, 37(6): 740-744.
CAI Qingxiang, ZHOU Wei, SHU Jisen, et al. Analysis and opplicaiton on end-slope timeliness of internal dumping under flat dipping ore body in large surface coal mine [J]. Journal of China University of Mining & Technology, 2008, 37(6): 740-744.
[2] 刘泽民,王社林,才庆祥.安家岭露天煤矿端帮采煤方法研究[J].中国矿业大学学报,2001,30(5): 93-95.
LIU Zemin, WANG Shelin, CAI Qingxiang. Application of top-coal caving method in anjialing surface mine [J]. Journal of China University of Mining & Technology, 2001, 30(5): 93-95.
[3] 周永利,罗怀廷.端帮陡帮开采技术在哈尔乌素露天煤矿的应用[J].煤炭工程,2016,48(3):11-14.
ZHOU Yongli, LUO Huaiting. Application of steep end slope mining technology for Haerwusu open-pit coal mine [J]. Coal Engineering, 2016, 48 (3): 11-14.
[4] 孟建华,张兆琏.SHM端帮联合采煤机赴美现场考察报告[J].露天采矿技术, 2007(2): 5-6, 9.
MENG Jianhua, ZHANG Zhaolian. SHM end slope combine coal mining machine spot examination report from America [J]. Opencast Mining Technology, 2007(2): 5-6, 9.
[5] ROSS C, CONOVER D, BAINE J. Highwall mining of thick, steeply dipping coal-a case study in geotechnical design and recovery optimization[J]. International Journal of Mining Science and Technology, 2019, 29(5): 777-780.
[6] FAMA M, SHEN B, CRAIG M, et al. Layout design and case study for highwall mining of coal[C]. 9^th International Congress on Rock Mechanics, 1999:265-268.
[7] MATSUI K, SHIMADA H, SASAOKA T, et al. Optimal highwall thick seam mining systems considering the in-situ stress conditions[C]. 3rd International Symposium on Rock Stress, 2003:527-533.
[8] MATSUI K, SHIMADA H, SASAOKA T, et al. Highwall mining system with backfilling[C]. 9^th International Symposium on Mine Planning and Equipment Selection, 2000:333-338.
[9] WANG Fangtian, ZHANG Cun. Reasonable coal pillar design and remote control mining technology for highwall residual coal resources[J]. Royal Society Open Science, 2019, 6(4): 1-13.
[10] 陈彦龙, 吴豪帅. 露天矿端帮开采下的支撑煤柱突变失稳机制研究[J]. 中国矿业大学学报, 2016, 45 (5): 859-865.
CHEN Yanlong, WU Haoshuai. Catastrophe instability mechanism of rib pillar in open-pit highwall mining [J]. Journal of China University of Mining & Technology, 2016, 45 (5): 859-865.
[11] 吴豪帅. 动静载荷下端帮开采中的条带支撑煤柱的稳定性研究[D]. 徐州:中国矿业大学, 2018.
WU Haoshuai. Stability analysis of rib pillar in highwall mining under dynamic and static loads[D]. Xuzhou:China University of Mining and Technolody, 2018.
[12] 曹胜根, 曹洋, 姜海军. 块段式开采区段煤柱突变失稳机制研究[J]. 采矿与安全工程学报, 2014, 31 (6): 907-913.
CAO Shenggen, CAO Yang, JIANG Haijun. Research on catastrophe instability mechanism of section coal pillars in block mining [J]. Journal of Mining and Safety Engineering, 2014, 31 (6): 907-913.
[13] 王东, 姜聚宇, 韩新平, 等. 褐煤露天矿端帮开采边坡支撑煤柱稳定性研究[J]. 中国安全科学学报, 2017, 27(12): 62-67.
WANG Dong, JIANG Juyu, HAN Xinping, et al. Stability of supporting coal pillar for slope highwall mined in lignite surface mine[J]. China Safety Science Journal, 2017, 27 (12): 62-67.
[14] PORATHUR J L, KAREKAL S, PALROY P. Web pillar design approach for highwall mining extraction[J]. International Journal of Rock Mechanics and Mining Sciences, 2013, 64: 73-83.
[15] MO S, CANBULAT I, ZHANG C, et al. Numerical investigation into the effect of backfilling on coal pillar strength in highwall mining[J]. International Journal of Mining Science and Technology, 2018, 28(2): 281-286.
[16] ADHIKARY D P, SHEN B, FAMA M E D. A study of highwall mining panel stability[J]. International Journal of Rock Mechanics and Mining Sciences, 2002, 39(5): 643-659.
[17] 胡炳南. 条带开采中煤柱稳定性分析[J]. 煤炭学报, 1995, 20 (2): 205-210.
HU Bingnan. Pillar stability analysis in strip mining[J]. Journal of China Coal Society, 1995, 20 (2): 205-210.
[18] 秦四清, 何怀锋. 狭窄煤柱冲击地压失稳的突变理论分析[J]. 水文地质工程地质, 1995(5): 17-20.
QIN Siqing, HE Huaifeng. Catastrophe theory analysis of rock burst instability of narrow coal pillar[J]. Hydrogeology and Engineering Geology, 1995(5): 17-20.
[19] 李波波, 张尧, 任崇鸿, 等. 三轴应力下煤岩损伤-能量演化特征研究[J].中国安全科学学报,2019, 29 (10): 98-104.
LI Bobo, ZHANG Yao, REN Chonghong, et al. Study on damage-energy evolution characteristics of coal under triaxial stress[J]. China Safety Science Journal, 2019, 29 (10): 98-104.
[20] 赵康, 王庆, 王军强, 等. 破碎围岩结构面特征及稳定性分析[J].中国安全科学学报, 2019, 29 (9): 138-143.
ZHAO Kang, WANG Qing, WANG Junqiang, et al. Structural plane characteristics and stability of broken surrounding rocks[J]. China Safety Science Journal, 2019, 29 (9): 138-143.

端帮开采支撑煤柱失稳演化机制试验研究^*

Experimental study on instability evolution mechanism of rib pillars during highwall mining

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