Deformation characteristics and support timing of deep high stress roadway

Authors

GENG Weile, School of Safety and Environment Engineering, Hunan Institute of Technology, Hengyang 421002, China; School of Resources and Safety Engineering, Chongqing University, Chongqing 400030, China
DONG Ziwen, School of Safety and Environment Engineering, Hunan Institute of Technology, Hengyang 421002, China
GUO Shengli, School of Safety and Environment Engineering, Hunan Institute of Technology, Hengyang 421002, China; School of Energy and Safety, Anhui University of Science & Technology, Huainan 232001, China
PI Zikun, School of Safety and Environment Engineering, Hunan Institute of Technology, Hengyang 421002, China

Abstract

The rock occurrence environment and structural characteristics determine its strength criteria, and affects the mechanical and deformation characteristics of surrounding rock. This paper relies on the deep replacement project of a mine in Yunnan, based on the rock strength criteria, and analyzes the mechanics and deformation characteristics of surrounding rock and the reasonable secondary support time of roadway to decrease the influence of the roadway support effect because of the obvious rheological properties present under high ground stress. The results showed that the min-average simulated deviations mf was generalized H-B criterion which was aimed at the sum of deviation absolute value. The mechanical and deformation characteristics of Baizuo surrounding rock, the maximum plastic area radius and the range were analyzed, the maximum displacement around the roadway approximately linearly increased with the surrounding rock stress, and gradually decreased with the increased support resistance; while the original rock stress was more than 36 MPa, the rheological phenomenon of surrounding rock was obvious, when it reached to 51 MPa, the displacement around roadway obviously decreased with the increased support resistance, but the convergence slowed down; By introducing creep damage variables and criteria of stable creep rate, it was obtained that the reasonable secondary support timing of the roadway under the rock stress of 41.5 MPa is 133 h after excavation.

Keywords

strength criterion, deformation analysis, creep research, support timing

DOI

10.3969/j.issn.1001-1986.2019.06.020

Recommended Citation

GENG Weile, DONG Ziwen, GUO Shengli, et al. (2019) "Deformation characteristics and support timing of deep high stress roadway," Coal Geology & Exploration: Vol. 47: Iss. 6, Article 21.
DOI: 10.3969/j.issn.1001-1986.2019.06.020
Available at: https://cge.researchcommons.org/journal/vol47/iss6/21

Reference

[1] 李英明,张瀚,孟祥瑞. 软岩巷道二次支护时机研究[J]. 煤炭学报,2015,40(增刊1):47-52. LI Yingming,ZHANG Han,MENG Xiangrui. Research on secondary support time of soft rock roadway[J]. Journal of China Coal Society,2015,40(S1):47-52.

[2] 孙振宇,张顶立,房倩,等. 隧道初期支护与围岩相互作用的时空演化特性[J]. 岩石力学与工程学报,2017,36(增刊2):3943-3956. SUN Zhenyu,ZHANG Dingli,FANG Qian,et al. Spatial and temporal evolution characteristics of interaction between primary support and tunnel surrounding rock[J]. Chinese Journal of Rock Mechanics and Engineering,2017,36(S2):3943-3956.

[3] 邵珠山,张艳玲,王新宇,等. 大跨软岩隧道二衬合理支护时机的分析与优化[J]. 地下空间与工程学报,2016,12(4):996-1001. SHAO Zhushan,ZHANG Yanling,WANG Xinyu,et al. Simulation and optimization of supporting time of secondary lining for large-span soft rock tunnel[J]. Chinese Journal of Underground Space and Engineering,2016,12(4):996-1001.

[4] 周勇,柳建新,方建勤,等. 围岩流变特性对隧道二衬支护时机的影响[J]. 解放军理工大学学报(自然科学版),2012,13(2):178-182. ZHOU Yong,LIU Jianxin,FANG Jianqin,et al. Influence of rock mass rheological characteristic on tunnel second lining time[J]. Journal of PLA University of Science and Technology(Natural Science Edition),2012,13(2):178-182.

[5] 周勇,柳建新,方建勤,等. 岩体流变情况下隧道合理支护时机的数值模拟[J]. 岩土力学,2012,33(1):268-272. ZHOU Yong,LIU Jianxin,FANG Jianqin,et al. Numerical simulation for appropriate lining time of tunnel considering rock mass rheological conditions[J]. Rock and Soil Mechanics,2012,33(1):268-272.

[6] 陈梁,茅献彪,李明,等. 基于Drucker-Prager准则的深部巷道破裂围岩弹塑性分析[J]. 煤炭学报,2017,42(2):484-491. CHEN Liang,MAO Xianbiao,LI Ming,et al. Elastoplastic analysis of cracked surrounding rock in deep roadway based on Drucker-Prager criterion[J]. Journal of China Coal Society,2017,42(2):484-491.

[7] 高召宁,孟祥瑞,付志亮. 考虑渗流、应变软化和扩容的巷道围岩弹塑性分析[J]. 重庆大学学报,2014,37(1):96-101. GAO Zhaoning,MENG Xiangrui,FU Zhiliang. Elastoplastic analysis on surrounding rock of roadways based on seepage,strain softening and dilatancy[J]. Journal of Chongqing University,2014,37(1):96-101.

[8] 张小波,赵光明,孟祥瑞. 基于Drucker-Prager屈服准则的圆形巷道围岩弹塑性分析[J]. 煤炭学报,2013,38(增刊1):30-37. ZHANG Xiaobo,ZHAO Guangming,MENG Xiangrui. Elastoplastic analysis of surrounding rock on circular roadway based on Drucker-Prager yield criterion[J]. Journal of China Coal Society,2013,38(S1):30-37.

[9] 胡小荣,俞茂宏. 三剪强度准则及其在巷道围岩弹塑性分析中的应用[J]. 煤炭学报,2003,28(4):389-393. HU Xiaorong,YU Maohong. New tri-shear failure criterion and its application in elastoplastic analysis for the wall rock of tunnel[J]. Journal of China Coal Society,2003,28(4):389-393.

[10] 尹光志,李星,鲁俊,等. 真三轴应力条件下层状复合岩石破坏准则[J]. 岩石力学与工程学报,2017,36(2):261-269. YIN Guangzhi,LI Xing,LU Jun,et al. A failure criterion for layered composite rock under true triaxial stress conditions[J]. Chinese Journal of Rock Mechanics and Engineering,2017,36(2):261-269.

[11] 李智慧,师俊平,汤安民. 复杂应力状态下岩石的破坏形式及断裂准则探讨[J]. 固体力学学报,2015,36(增刊1):50-57. LI Zhihui,SHI Junping,TANG Anmin. Investigation on the failure modes and fracture criterion of rocks under complicate stress states[J]. Chinese Journal of Solid Mechanics,2015,36(S1):50-57.

[12] 杨雪强,李子生,燕全会,等. 横观各向同性岩石类材料的破坏准则[J]. 工程力学,2012,29(12):328-333. YANG Xueqiang,LI Zisheng,YAN Quanhui,et al. Failure criterion for transversely isotropic rock materials[J]. Engineering Mechanics,2012,29(12):328-333.

[13] 路德春,杜修力. 石材料的非线性强度与破坏准则研究[J]. 岩石力学与工程学报,2013,32(12):2394-2408. LU Dechun,DU Xiuli. Research on nonlinear strength and failure criterion of rock material[J]. Chinese Journal of Rock Mechanics and Engineering,2013,32(12):2394-2408.

[14] 王东,刘长武,王丁,等. 复杂应力条件下岩石的拉剪变形及破坏准则研究[J]. 四川大学学报(工程科学版),2012,44(2):31-35. WANG Dong,LIU Changwu,WANG Ding,et al. Research on the tension-shear deformation and failure criterion of rock under complex stress[J]. Journal of Sichuan University(Engineering Science Edition),2012,44(2):31-35.

[15] 郭建强,刘新荣,王军保,等. 基于弹性应变能的岩石强度准则[J]. 岩土力学,2016,37(增刊2):129-136. GUO Jianqiang,LIU Xinrong,WANG Junbao,et al. Strength criterion of rock based on elastic strain energy[J]. Rock and Soil Mechanics,2016,37(S2):129-136.

[16] HOEK E,BROWN E T. Empirical strength criterion for rock masses[J]. ASCE Journal of Geotechnical Engineering Division, 1980,106(GT9):1013-1035.

[17] HOEK E,WOOD D,SHAH S. A modified Hoek-Brown criterion for jointed rock masses[C]//Proceeding Rock characterization:ISRM Symposium,Chester,14-17 September 1992,209-213.

[18] 尤明庆. 完整岩石的强度和强度准则[J]. 复旦学报(自然科学版),2013,52(5):569-582. YOU Mingqing. Strength and strength criteria for intact rocks[J]. Journal of Fudan University(Natural Science),2013,52(5):569-582.

[19] 尤明庆. 岩石强度准则的数学形式和参数确定的研究[J]. 岩石力学与工程学报,2010,29(11):2172-2184. YOU Mingqing. Study of mathematical equation and parameter determination of strength criteria for rock[J]. Chinese Journal of Rock Mechanics and Engineering,2010,29(11):2172-2184.

[20] 尤明庆. 岩石指数型强度准则在主应力空间的特征[J]. 岩石力学与工程学报,2009,28(8):1541-1551. YOU Mingqing. Characteristics of exponential strength criterion of rock in principal stress space[J]. Chinese Journal of Rock Mechanics and Engineering,2009,28(8):1541-1551.

[21] 朱合华,张琦,章连洋. Hoek-Brown强度准则研究进展与应用综述[J]. 岩石力学与工程学报,2013,32(10):1945-1963. ZHU Hehua,ZHANG Qi,ZHANG Lianyang. Review of research progresses and applications of Hoek-Brown strength criterion[J]. Chinese Journal of Rock Mechanics and Engineering,2013,32(10):1945-1963.

[22] 田延哲. 基于Hoek-Brown准则的冻融循环条件下露天煤矿边坡岩体力学系数修正[J]. 煤田地质与勘探,2018,46(6):150-156. TIAN Yanzhe. Hoek-Brown criterion-based modification of the mechanical parameters of rock mass of open pit slope under freezing-thawing cycle[J]. Coal Geology & Exploration,2018,46(6):150-156.

[23] 曾钱帮,王恩志,王思敬. Hoek-Brown破坏准则求解圆形硐室塑性区半径与修正的芬纳公式比较[J]. 沈阳建筑大学学报(自然科学版),2008,24(6):933-938. ZENG Qianbang,WANG Enzhi,WANG Sijing. Comparison between plastic radius around a circular opening derived from Hoek-Brown failure criterion and calculated through modified fenner formula[J]. Journal of Shenyang Jianzhu University(Natural Science),2008,24(6):933-938.

[24] 杨圣奇. 岩石流变力学特性的研究及其工程应用[D]. 南京:河海大学,2006.

[25] 陈沅江,傅衣铭,曹平. 岩土非线性流变本构模型的辨识算法研究[J]. 煤田地质与勘探,2007,35(4):42-45. CHEN Yuanjiang,FU Yiming,CAO Ping. Identification method for nonlinear constitutive model of soft rock[J]. Coal Geology & Exploration,2007,35(4):42-45.

[26] 王祥秋,杨林德,高文华. 软弱围岩蠕变损伤机理及合理支护时间的反演分析[J]. 岩石力学与工程学报,2004,23(5):793-796. WANG Xiangqiu,YANG Linde,GAO Wenhua. Creep damage mechanism and back analysis of optimum support time for soften rock mass[J]. Chinese Journal of Rock Mechanics and Engineering,2004,23(5):793-796.

[27] 许宏发,卢红标,钱七虎. 土层灌浆锚杆的蠕变损伤特性研究[J]. 岩土工程学报,2002,24(1):61-63. XU Hongfa,LU Hongbiao,QIAN Qihu. Creep damage effects of pulling grouting anchor in soil[J]. 2002,24(1):61-63.