墩柱式结构充填底板应力传递特征及变形规律

doi:10.13722/j.cnki.jrme.2022.0909

Abstract
Figure/Table
References (0)
Related Citation (0)

Download: PDF (118290 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In order to investigate the impact of stress transmission from the filling body on the underlying rock layer during the filling mining process，a composite structure model of the filling body-bottom plate was constructed using the similarity principle in a coal mine in Qinshui coalfield. The laboratory experiments and numerical simulations were carried out to study the movements of the top and bottom plates，the failure modes of the bottom plate，and the plastic zone ranges of the column-and-pillar filling mining under different filling body strengths and filling distances. The results indicate that：(1) the most significant stress concentration occurs under the filling body in the shallow bottom plate. This stress is diagonally transmitted downward at a 45° angle，causing horizontal stress and ultimately spreading to the entire bottom plate. As the stress transmits downward，the vertical stress becomes smaller and more uniform and the horizontal stress becomes larger. The change of filling distance has a significant impact on the stress level in the bottom plate. (2) Within the load-bearing range of the column-and-pillar structure filling，the amount of top plate sinking is mainly determined by the filling body strength，while the bottom bulge is mainly determined by the filling distance. The overall relationship between filling body strength，filling distance，and top and bottom plate movements is represented by a quadratic parabolic surface. (3) Under the current working conditions，the maximum depth of the filling column under the bottom plate shear slip is 2.38 m，above which an elliptical shear failure plastic zone is produced，and below which a wavy tensile failure plastic zone is produced，ultimately penetrating the bottom plate of the two weak rock layers. The research results can provide a basis for the rational design of column-and-pillar structure filling.

Key words： mining engineering backfill and floor composite structure rock formation control stress transfer deformation of the bass drum

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	WANG Feng1
	2
	GUO Yuxia1
	2
	3
	FENG Guorui1
	2
	3
	XIE Wenshuo1
	2
	YE Xiaoli1
	2
	MA Jiahui1
	2

Cite this article:

WANG Feng1,2,GUO Yuxia1, et al. Stress transfer characteristics and deformation law of filling floor of #br# pier-column structure#br#[J]. , 2023, 42(5): 1237-1247.

URL:

http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2022.0909 OR http://rockmech.whrsm.ac.cn/EN/Y2023/V42/I5/1237

[10]	ZHANG J H，WANG L G，LI Q H，et al. Plastic zone analysis and support optimization of shallow roadway with weakly cemented soft strata[J]. International Journal of Mining Science and Technology，2015，25(3)：395-400.
[20]	王志强，王鹏，吕文玉，等. 沿空巷道非对称底鼓机制及防控研究[J]. 采矿与安全工程学报，2021，38(2)：215-226.(WANG Zhiqiang，WANG peng，LYU Wenyu，et al. Mechanism and control of asymmetric floor heave in gob-side entry[J]. Journal of Mining and Safety Engineering，2021，38(2)：215-226.(in Chinese))
[18]	REN Y H，GAO H，XING X. Research on floor failure features of coal seam above the confined aquifer in the case of backfill mining[J]. IOP Conference Series：Earth and Environmental Science，2018，170(2)：022119.
[25]	钱鸣高. 20年来采场围岩控制理论与实践的回顾[J]. 中国矿业大学学报，2000，(1)：1-4.(QIAN Minggao. Review of theory and practice of stope surrounding rock control in the past 20 years[J]. Journal of China University of Mining and Technology，2000，(1)：1-4.(in Chinese))
[28]	郑西贵，刘娜，张农，等. 深井巷道挠曲褶皱性底臌机制与控制技术[J]. 煤炭学报，2014，39(3)：417-423.(ZHENG Xigui，LIU Na，ZHANG Nong，et al. Floor heave mechanism and control technology of flexural and folded deep mine roadway[J]. Chinese Journal of Rock Mechanics and Engineering，，2014，39(3)：417-423.(in Chinese))
[23]	赵洪宝，程辉，李金雨，等. 孤岛煤柱影响下巷道围岩非对称性变形机制研究[J]. 岩石力学与工程学报，2020，39(增1)：2 771-2 784.(ZHAO Hongbao，CHENG Hui，LI Jinyu，et al. Study on asymmetric deformation mechanism of surrounding rock of roadway under the effect of isolated coal pillar[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(Supp.1)：2 771-2 784.(in Chinese))
[1]	钱鸣高，缪协兴，许家林. 资源与环境协调(绿色)开采[J]. 煤炭学报，2007，32(1)：1-7.(QIAN Minggao，MIAO Xiexing，XU Jialin. Green mining of coal resources harmonizing with environment[J]. Journal of China Coal Society，2007，32(1)：1-7.(in Chinese))
[3]	冯国瑞，杜献杰，郭育霞，等. 结构充填开采基础理论与地下空间利用构想[J]. 煤炭学报，2019，44(1)：74-84.(FENG Guorui，DU Xianjie，GUO Yuxia，et al. Basic theory of constructional backfill mining and the underground space utilization concept[J]. Journal of China Coal Society，2019，44(1)：74-84.(in Chinese))
[5]	GUO G，KANG H，QIAN D，et al. Mechanism for controlling floor heave of mining roadways using reinforcing roof and sidewalls in underground coal mine[J]. Sustainability，2018，10(5)：1 413-1 428.
[8]	彭苏萍. 我国煤矿安全高效开采地质保障系统研究现状及展望[J]. 煤炭学报，2020，45(7)：2 331-2 345.(PENG Suping. Current status and prospects of research on geological assurance system for coal mine safe and high efficient mining[J]. Journal of China Coal Society，2020，45(7)：2 331-2 345.(in Chinese))
[9]	MENG B，JING H W，CHEN K F，et al. Failure mechanism and stability control of a large section of very soft roadway surrounding rock shear slip[J]. International Journal of Mining Science and Technology，2013，23(1)：127-134.
[11]	ZHOU J X，ZHANG J W，WANG J A，et al. Research on nonlinear damage hardening creep model of soft surrounding rock under the stress of deep coal resources mining[J]. Energy Reports，2022，8(4)：1 493-1 507.
[13]	于光远，王炯，孙晗，等. 砌块充填沿空留巷底鼓大变形机制及综合控制技术[J]. 采矿与安全工程学报，2022，39(2)：335-346.(YU guangyuan，WANG jiong，SUN han，et al. Mechanism and comprehensive control techniques for large deformation of floor heave in block filling gob-side entry retaining[J]. Journal of Mining and Safety Engineering，2020，39(2)：335-346.(in Chinese))
[15]	常庆粮，唐维军，李秀山. 膏体充填综采底板破坏规律与实测研究[J]. 采矿与安全工程学报，2016，33(1)：96-101.(CHANG Qingliang，TANG Weijun，LI Xiushan，et al. Study on field measurement and floor failure law of paste filling fully mechanized mining[J]. Journal of Mining and Safety Engineering，2016，33(1)：96-101.(in Chinese))
[4]	王志强，王鹏，吕文玉，等. 沿空巷道非对称底鼓机制及防控研究[J]. 采矿与安全工程学报，2021，38(2)：215-226.(WANG Zhiqiang，WANG Peng，LU Wenyu，et al. Mechanism and control of asymmetric floor heave in gob-side entry[J]. Journal of Mining and Safety Engineering，2021，38(2)：215-226.(in Chinese))
[6]	徐营，周辉，柏建彪，等. 沿空留巷底鼓特性与控制方法研究[J]. 岩石力学与工程学报，2015，34(增2)：4 235-4 243.(XU Ying，ZHOU Hui，BAI Jianbiao，et al. Characteristics and control method of floor heave in gob-side entry retaining[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(Supp.2)：4 235-4 243.(in Chinese))
[7]	郭文兵，白二虎，赵高博. 高强度开采覆岩地表破坏及防控技术现状与进展[J]. 煤炭学报，2020，45(2)：509-523.(GUO Wenbing，BAI Erhu，ZHAO Gaobo. Current status and progress on overburden and surface damage and prevention technology of high-intensity mining[J]. Journal of China Coal Society，2020，45(2)：509-523.(in Chinese))
[14]	轩召军，常庆粮. 膏体充填开采底板破坏机制及分区治理技术[J]. 煤矿安全，2022，53(8)：210-217.(XUAN Zhaojun，CHANG Qingliang. Study on floor failure mechanism of paste backfill mining and division area control technology[J]. Safety in Coal Mines，2022，53(8)：210-217.(in Chinese))
[16]	高翔. 临汾宏大煤矿矸石充填开采沿空留巷围岩稳定性控制技术[J]. 山东煤炭科技，2022，40(8)：90-92.(GAO Xiang. Surrounding rock stability control technology of retaining roadway along the goaf in gangue filling mining of Linfen hongda coal mine[J]. Shandong Coal Science and Technology，2022，40(8)：90-92.(in Chinese))
[17]	SHI X Y，ZHOU H Q，SUN X K，et al. Floor damage mechanism with cemented paste backfill mining method[J]. Arabian Journal of Geosciences，2021，DOI：10.1007/S12517-020-06368-6.
[19]	徐营，周辉，柏建彪，等. 沿空留巷底鼓特性与控制方法研究[J]. 岩石力学与工程学报，2015，34(增2)：4 235-4 243.(XU Ying，ZHOU Hui，BAI Jianbiao，et al. Characteristics and control method of floor heave in gob-side entry retaining[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(Supp.2)：4 235-4 243.(in Chinese))
[21]	华心祝，李迎富. 沿空留巷底板变形力学分析及底臌防控[J]. 煤炭学报，2016，41(7)：1 624-1 631.(HUA Xinzhu，LI Yingfu. Mechanics analysis on floor deformation of gob-side entry retaining and prevention and control of floor heave[J]. Journal of China Coal Society，2016，41(7)：1 624-1 631.(in Chinese))
[24]	陈正拜，李永亮，杨仁树，等. 窄煤柱巷道非均匀变形机制及支护技术[J]. 煤炭学报，2018，43(7)：1 847-1 857.(CHEN Zhengbai，LI Yongliang，YANG Renshu，et al. Non-uniform deformation mechanism and support technology of narrow coal pillar roadway[J]. Chinese Journal of Rock Mechanics and Engineering，2018，43(7)：1 847-1 857.(in Chinese))
[26]	钱鸣高，缪协兴. 采场上覆岩层结构的形态与受力分析[J]. 岩石力学与工程学报，1995，14(2)：97-106.(QIAN Minggao，MIAO Xiexing. The morphology and stress analysis of overlying strata structure in stope[J]. Chinese Journal of Rock Mechanics and Engineering，1995，14(2)：97-106.(in Chinese))
[27]	钱鸣高，石平五，许家林. 矿山压力与岩层控制[M]. 徐州：中国矿业大学出版社，2010：188-190.(QIAN Minggao，SHI Pingwu，XU Jialin. Mine pressure and rock formation control[M]. Xuzhou：China University of Mining and Technology Press，2010：188-190.(in Chinese))
[2]	钱鸣高，许家林，缪协兴. 煤矿绿色开采技术[J]. 中国矿业大学学报，2003，32(4)：5-10.(QIAN Minggao，XU Jialin，MIAO Xiexing. Green technique in coal mining[J]. Journal of China University of Mining and Technology，2003，32(4)：5-10.(in Chinese))
[12]	李传明，谢广祥，林远东，等. 巷道薄分层软弱底板围岩变形控制机制与支护实践[J]. 采矿与安全工程学报，2017，34(5)：948-954.(LI Chuanming，XIE Guangxiang，LIN Yuandong，et al. Surrounding rock deformation control mechanism with thinly-layered soft and weak floor in roadway and its supporting practice[J]. Journal of Mining and Safety Engineering，2017，34(5)：948-954.(in Chinese))
[22]	CHEN Y，BAI J B，YAN S，et al. Control mechanism and technique of floor heave with reinforcing solid coal side and floor corner in gob-side coal entry retaining[J]. International Journal of Mining Science and Technology，2012，22(6)：832-836.