岩体水力劈裂的细观PFC-CFD联合分析

doi:10.13722/j.cnki.jrme.2014.0878

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Abstract

Existing studies on hydraulic fracturing are mainly based on macroscopic continuum method. It is difficult to reveal the microscopic mechanism of hydraulic fracturing. Taking advantage of PFC in modeling material failure and crack propagation，we developed a coupled PFC-CFD method for analyzing crack propagation in meso-level and verified by a simplified model test of a cylinder rock specimen. Then taking a tunnel project for example，we simulate the crack propagation in the process of tunnel excavation used this method and analyze the effects of the distance between the tunnel face and the high-pressure water source on the crack propagation in unsteady state seepage stage. The result shows that the coupled method is very suitable to simulate the processes of hydraulic fracturing in rock and could be applied to safety assessment in tunnel projects.

Key words： rock mechanics deep tunnel hydraulic fracturing microscopic fluid-solid couple model

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	Articles by authors
	NI Xiaodong1
	2
	ZHAO Shuailong1
	2
	WANG Yuan1
	2
	WEI Peng1
	2

Cite this article:

NI Xiaodong1,2,ZHAO Shuailong1, et al. NUMERICAL ANALYSIS OF HYDRAULIC FRACTURING OF ROCK MASS ON MESOSCOPIC LEVEL BY COUPLED PFC-CFD METHOD[J]. , 2015, 34(S2): 3862-3870.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.0878 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/IS2/3862

[1]	黄文熙. 对土石坝科研工作的几点看法[J]. 水利水电技术，1982，(4)：23-27.(HUANG Wenxi. Several views onresearch of embankmentdams[J]. Water Resources andHydropower Engineering，1982，(4)：23-27.(in Chinese))
[2]	PARK A B Y，KIM A K S，KWONA S，et a1. Determination of the hydraulic conductivity components using a three-dimensional fracture network model in volcanic rock[J]. Engineering Geology，2002，66 (2)：127-141.
[3]	ITO T，EVANSB K，KAWAI K，et a1. Hydraulic fracture reopening pressure and the estimation of maximum horizontal stress[J]. InternationalJournal of Rock Mechanics and Mining Sciences，1999，36：811-826.
[4]	李宗利，张宏朝，任青文，等. 岩石裂纹水力劈裂分析与临界水压计算[J]. 岩土力学，2005，26(8)：1 216-1 220.(LI Zongli，ZHANG Hongchao，REN Qingwen，et al. Analysis of hydraulic fracturing and calculation of critical internal water pressure of rock fracture[J]. Rock and Soil Mechanics，2005，26(8)：1 216-1 220.(in Chinese))
[5]	陈五一，赵颜辉. 土石心墙水力劈裂计算方法研究[J]. 岩石力学与工程学报，2008，27(7)：1 380-1 385.(CHEN Wuyi，ZHAO Yanhui. Study of calculation method of hydraulic fracturing for core of earth- rockfill dam[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(7)：1 380-1 385.(in Chinese))
[6]	朱俊高，王俊杰，张辉. 土石心墙水力劈裂机制研究[J]. 岩土力学，2007，28(3)：487-492.(ZHU Jungao，WANG Junjie，ZHANG Hui. Study on mechanism of hydraulic fracturing in core of earth-rockfill dam[J]. Rock and Soil Mechanics，2007，28(3)：487-492.(in Chinese))
[7]	HUTTERT M K，WILLIS D G.Mechanic of Hydraulic Fracturing Transactions of American Institute of Mining Engineers，1957，210：153-168.
[8]	王国庆，谢兴华，速宝玉. 岩体水力劈裂实验研究[J]. 采矿与安全工程学报，2006，23(4)：480-484.(WANG Guoqing，XIE Xinghua，SU Baoyu. Experimental study of hydraulic fracturing of rock mass[J]. Journal of Mining and Safety Engineering，2006，23(4)：480-484.(in Chinese))
[9]	谢兴华. 岩体水力劈裂机理试验及数值模拟研究[博士学位论文][D]. 南京：河海大学，2004.(XIE Xinghua.Experimental study on hydraulic fracture mechanism of mass and numerical simulation[Ph. D. Thesis][D].Nanjing：Hohai University，2004.(in Chinese))
[10]	倪小东，王媛，陆宇光. 隧洞开挖过程中渗透破坏细观机制研究[J]. 岩石力学与工程学报，2010，29(2)：4 194-4 201.(NI Xiaodong，WANG Yuan，LU Yuguang. Study of meso-mechanism of seepage failure in tunnel excavation process[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(2)：4 194-4 201.(in Chinese))
[11]	何翔，冯夏庭，张东晓. 岩体渗流-应力耦合有限元计算的精细积分方法[J]. 岩石力学与工程学报，2006，25(10)：2 003-2 008.(HE Xiang，FENG Xiating，ZHANG Dongxiao. Preciseintegration algorithm for finite element simulation of coupled processof seepage field and stress field in rock mass[J]. ChineseJournal of Rock Mechanics and Engineering，2006，25(10)：2003-2008.(in Chinese))
[12]	ODA M. An equivalent continuum model for coupled stress and fluid flow analysis in jointed rock mass[J]. Water Resources Research，1986，22(13)：1845-1856.
[13]	DVERSTORP B，ANDERSSON J. Application of the discrete fracture network concept with field data：possibilities of model calibration and validation[J]. Water Resources Research，1989，25(3)：540-550.
[14]	宋晓晨，徐卫亚. 裂隙岩体渗流模拟的三维离散裂隙网络数值模型(I)：裂隙网络的随机生成[J]. 岩石力学与工程学报，2004，23(12)：2 015-2 020.(SONG Xiaochen，XU Weiya. Numerical model of three-dimensional discrete fracture-network for seepage in fractured rocks (I)：generation of fracture network[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(12)：2015-2020.(in Chinese))
[15]	罗平平，陈蕾，邹正盛. 空间岩体裂隙网络灌浆数值模拟研究[J]. 岩土工程学报，2007，29(12)：1 844-1 848.(LUO Pingping，CHEN Lei，ZOU Zhengsheng. Numerical simulation of grouting in space fracture net of rock mass[M]. Chinese Journal of Geotechnical Engineering，2007，29(12)：1 844-1 848.(in Chinese))
[16]	赵延林，曹平，赵阳升，等. 双重介质渗流场-应力场-温度场耦合模型及三维数值研究[J]. 岩石力学与工程学报，2007，26(增2)：4 024-4 031.(ZHAO Yanlin，CAO Ping，ZHAO Yangsheng，et al. Dual media model for thermo-hydro-mechanical coupling and 3D numerical simulation[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(Supp.2)：4024-4031.(in Chinese))
[17]	唐春安，杨天鸿，李连崇，等. 孔隙水压力对岩石裂纹扩展影响的数值模拟[J]. 岩土力学，2003，24(增2)：17-21.(TANG Chun¢an，YANG Tianhong，LI Lianchong，et al. Numerical simulation on influence of pore water pressure magnitude and gradient on fracture propagation in brittle heterogeneous rocks[J]. Rock and Soil Mechanics，2003，24(Supp.2)：17-21.(in Chinese))
[18]	CUNDALL P A. A computer model for simulating progressive, large-scale movements in blocky rock systems[C]// Proc. Symp. Int. Soc. Rock Mech. Nancy：[s. n.]，1971：2-8.
[19]	Itasca Consulting Group Inc. Partical flow code，PFC2D，version 3.1[R]. Minnesota：Itasca Consulting Group，Inc.，2003.
[20]	詹美礼，岑建. 岩体水力劈裂机制圆筒模型试验及解析理论研究[J]. 岩石力学与工程学报，2007，26(6)：1 173-1 181.(ZHAN Meili，CEN Jian. Experimental and analytical study on hydraulic fracturing of cylinder sample[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(6)：1 173-1 181.(in Chinese))
[21]	王媛，颜青青. 岩体水力劈裂非稳定渗流影响机制初探[J]. 岩石力学与工程学报，2012，31(10)：2 016-2 021.(WANG Yuan，YAN Qingqing.Primary research of influence of unsteady seepage processes on hydraulic fracturing in rock mass[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(10)：2 016-2 021.(in Chinese)