裂隙岩体等效渗透系数张量数值法研究

杨建平; 陈卫忠; 吴月秀; 谭贤君

裂隙岩体等效渗透系数张量数值法研究 English Version

1. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室，湖北武汉 430071; 2. 山东大学岩土与结构工程研究中心，山东济南 250061; 3. 武汉大学水工岩石力学教育部重点实验室，湖北武汉 430071

基金项目: 国家自然科学基金项目（51004097，51009133）

详细信息

作者简介:
杨建平(1982- )，男，江苏泰州人，博士，副研究员，主要从事岩体力学特性、地下工程稳定性等方面的研究工作。E-mail: jpyang@whrsm.ac.cn。

中图分类号: TU458
计量
- 文章访问数: 1204
- HTML全文浏览量: 0
- PDF下载量: 1026
出版历程
- 收稿日期: 2012-06-23
- 发布日期: 2013-06-19

Numerical study on equivalent permeability tensor of fractured rock masses

1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, China; 3. Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering, Ministry of Education, Wuhan University, Wuhan 430071, China

摘要

摘要: 由于核废料地质储存、地热开采、深部油气开采的工程需求，裂隙岩体渗透性及其随着应力、温度的影响受到广泛关注。通过温度-渗流-应力耦合三轴仪对大理岩人工裂隙渗透率随应力及温度变化规律进行了试验研究，获得了大理岩闭合裂隙渗透率随应力、温度的变化趋势及受影响程度。在试验基础上，通过数值方法研究了裂隙岩体等效渗透系数的尺寸效应及各向异性，获得了该裂隙岩体的等效渗透系数REV及渗透张量。
- 裂隙岩体 /
- 渗透率 /
- 应力 /
- 温度 /
- 等效渗透系数张量
Abstract: Determination of permeability dependence of fracture on stresses and temperatures is the basis of safety evaluation in geological disposal of radioactive waste, geothermal exploitation and underground gas/oil exploitation. By means of the developed temperature-permeability-stress test equipment, permeability variation of an artificial rock fracture is studied under different stresses and temperatures. The test results show that the permeability decreases about a half as pressure increases from 9 MPa to 20 MPa, and the closure of fracture cannot recover its initial state as the pressure decreases. When the temperature increases from 19.7℃ to 56.1℃, the fracture permeability decreases about a half. At the end, transport properties of fractured rock masses, in which the fracture network is generated by Mont Carlo method, are studied by using UDEC code based on the fracture test results. The seepage REV and the corresponding equivalent permeability tensor of the fractured rock masses are obtained.
- fractured rock mass /
- permeability /
- stress /
- temperature /
- equivalent permeability tensor

HTML全文

参考文献(21)

[1]	RUTQVIST J, WU Y-S, TSANG C-F,et al. A modeling approach for analysis of coupled multiphase fluid flow, heat transfer, and deformation in fractured porous rock[J]. International Journal Rock Mechanics and Mining Sciences, 2002,39:429-442.
[2]	BOWER K M, ZYVOLOSKI G. A numerical model for thermo-hydro-mechanical coupling in fractured rock[J]. International Journal Rock Mechanics and Mining Sciences, 1997,34(8):1201-1211.
[3]	李宁,陈波,(党发宁). 裂隙岩体介质温度、渗流、变形耦合模型与有限元解析[J]. (自然科学进展), 2000,10(8):722-728. (LI Ning, CHEN Bo, DANG Fa-ning. Coupled thermal,hydraulic and mechanical model for fractured rockmass and its finite element solution[J]. Progress in Natural Science, 2000, 10(8): 722-728.( (in Chinese))
[4]	张玉军),(张维庆). 三维双重孔隙-裂隙介质热-水-应力-迁移耦合模型及其有限元分析[J]. 中国科学: 技术科学, 2010,40(12):1426-1436. (ZHANG Yu-jun, ZHANG Wei-qing. 3D thermo-hydro-mechanical-migratory coupling model and fem analysis for dual-porosity medium[J]. Scientia China Techniological Sciences, 2010, 40(12): 1426-1436.( (in Chinese))
[5]	陈益峰),(周创兵),(井兰如),等. 多相流传输THM全耦合数值模型及程序验证[J]. (岩石力学与工程学报), 2009,28(4):649-665. (CHEN Yi-feng, ZHOU Chuang-bing, TONG Fuguo, et al. A numerical model for fully coupled THM processes with multiphase flow and code validation[J]. Chinese Journal of Rock Mechanics and Engineering,2009,28(4): 649-665. (in Chinese)
[6]	孔祥言),(李道伦),(徐献之),等. 热-流-固耦合渗流的数学模型研究[J]. (水动力学研究与进展), 2005,20(2):269-275. (KONG Xiang-yan, LI Dao-lun, XU Xian-zhi, et al. Study on the mathematical models of coupled thermal-hydrological- mechanical(THM) processes[J]. Journal of Hydrodynamics,2005,20(2): 269-275. (in Chinese)
[7]	李夕兵),(尹土兵),(周子龙),等温压耦合作用下的粉砂岩动态力学特性试验研究[J]. 岩石力学与工程学报,2010, 29(12): 2377-2384. (LI Xi-bing, YIN Tu-bing, ZHOU Zi-long, et al. Study on dynamic properties of siltstone under coupling effects of temperature and pressure[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(12): 2377-2384. (in Chinese)
[8]	冯夏庭),(丁梧秀). 应力-水流-化学耦合下岩石破裂全过程的细观力学试验[J]. (岩石力学与工程学报), 2005,24(9):1465-1473. (FENG Xia-ting, DING Wu-xiu. Meso-mechanical experiment of microfracturing process of rock under coupled mechanical-hydrological-chemical environment[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(9): 1465-1473.( (in Chinese))
[9]	蒋振泉),(季梁军),(左如松),等. 岩石在伺服条件下的渗透性与应变、应力的关联性特征[J]. (岩石力学与工程学报), 2002,21(10):1442-1446. (JIANG Zhen-quan, JI Liang-jun, ZUO Ru-song, et al. Correlativity among rock permeability and strain, stress under servo-control condition[J]. Chinese Journal of Rock Mechanics and Engineering,2002,21(10): 1442-1446. (in Chinese)
[10]	夏才初),王伟,(王筱柔). 岩石节理剪切-渗流耦合试验系统的研制[J]. (岩石力学与工程学报), 2008,27(6):1285-1291. (XIA Cai-chu, WANG Wei, WANG Xiao-rou. Development of coupling shear-seepage test system for rock joints[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(6): 1285-1291.( (in Chinese))
[11]	熊祥斌),(张楚汉),(王恩志). 岩石单裂隙稳态渗流研究进展[J]. (岩石力学与工程学报), 2009,28(9):1839-1847. (XIONG Xiang-bin, ZHANG Chu-han, WANG En-zhi. A review of steady state seepage in a single fracture of rock[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(9): 1839-1847.( (in Chinese))
[12]	申林方),(冯夏庭),(潘鹏志),等. 单裂隙花岗岩在应力-渗流-化学耦合作用下的试验研究[J]. (岩石力学与工程学报), 2010,29(7):1879-1388. (SHEN Lin-fang, FENG Xia-ting, PAN Peng-zhi, et al. Experimental research on mechano- hydro-chemical coupling granite with single fracture[J]. Chinese Journal of Rock Mechanics and Engineering,2010,29(7): 1879-1388. (in Chinese)
[13]	RUTQVIST J, FREIFELD B, MIN K B,et al. Analysis of thermally induced changes in fractured rock permeability during 8 years of heating and cooling at the Yucca Mountain Drift Scale Test[J]. International Journal Rock Mechanics and Mining Sciences, 2008,45:1373-1389.
[14]	DOBSON P K, KNEAFSEY T J, SONNENTHAL E L,et al. Experimental and numerical simulation of dissolution and precipitation: implications for fracture sealing at Yucca Mountain, Nevada[J]. Journal of Contaminant Hydrology, 2003,62(63):459-476.
[15]	HSIUNG S M, CHOWDHURY A H, NATARAJA M S. Numerical simulation of thermal-mechanical processes observed at the drift-scale heater test at Yucca Mountain, Nevada, USA[J]. International Journal Rock Mechanics and Mining Sciences, 2005,42:652-666.
[16]	OLIVELLA S, GENS A. Double structure THM analyses of a heating test in a fractured tuff incorporating intrinsic permeability variations[J]. International Journal Rock Mechanics and Mining Sciences, 2005,42:667-679.
[17]	HIDEAKI Y, AMIR P, YASUHIRO M,et al. Evolution of fracture permeability through fluid-rock reaction under hydrothermal conditions[J]. Earth and Planetary Science Letters, 2006,244:186-200.
[18]	刘亚晨),(蔡永庆),(刘泉声),等. 岩体裂隙结构面的温度-应力-水力耦合本构关系[J]. (岩土工程学报), 2001,23(2):196-200. (LIU Ya-chen, CAI Yong-qing, LIU Quan-sheng, et al. Thermal-hydraulic-mechanical coupling constitutive relation of rock mass fracture interconnectivity[J]. Chinese Journal of Geotechnical Engineering,2001,23(2): 196-200. (in Chinese)
[19]	杨建平),(陈卫忠),(田洪铭),等. 低渗透介质温度-应力-渗流耦合三轴仪研制及其应用[J]. (岩石力学与工程学报), 2009,28(12):2377-2382. (YANG Jian-ping, CHEN Wei-zhong, TIAN Hong-ming, et al. Development of thermo- gaseous-mechanical coupling triaxial testing system of low permeability medium and its application[J]. Chinese Journal of Rock Mechanics and Engineering,2009,28(12): 2377-2382. (in Chinese)
[20]	杨建平). 裂隙岩体宏观力学参数评价研究[D]. 武汉: 中国科学院武汉岩土力学研究所, 2009.(YANG Jian-ping. Study of macro mechanical parameters of fractured rock mass[D]. Wuhan: Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, 2009.( (in Chinese))
[21]	孔祥言) 高等渗流力学.合肥:中国科技大学出版社,1999. (LONG Xiang-yan. Advanced mechanics of fluids in prous media[M] Hefei: University of Science and Technology of China Press,2010. (in Chinese))