大尺度单裂隙介质应力–渗流耦合试验台架及其渗透系数测试研究

doi:10.13722/j.cnki.jrme.2015.1004

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (447 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要针对裂隙介质渗透特性的试验及理论进展，结合裂隙介质渗流诱发的工程问题，详细介绍自主研发的裂隙介质渗透试验台架；该台架可实现裂隙介质在法向、切向的同步、异步加载，其最大加载位移均为100 mm，最大加载荷载均为1 000 kN。密封技术是决定裂隙渗流试验成败的关键技术，通过相关调研及研究，针对试验所用的大尺度岩样，提出全新的密封试验技术(岩石表面内外放置密封圈)，采用此技术实现了大尺度裂隙介质渗透试验的密封。同时，基于渗流达西定律及立方定律，得到适用于该试验台架的裂隙介质渗透系数计算方法。进一步地，利用该渗透台架，采取岩石表面黏贴细砂的方法模拟岩石表面的粗糙性，初步开展大尺度单裂隙花岗岩的渗透试验。并基于流量平衡原则，剔除无效试验数据，获得该单裂隙花岗岩渗透系数的变化规律，其随着渗透时间的增加，渗透系数逐渐增大，并稳定至某个数值。深入分析渗透系数变化的影响因素，认为裂隙介质表面黏贴的细砂对其渗透性有着决定性的影响。同时进行裂隙介质的表面为光滑、无黏贴细砂状态下的渗透试验，与之相对比，验证了裂隙表面的粗糙性是影响裂隙介质渗透系数的重要因素。渗透试验结果表明：此渗透试验台架采用该计算测试方法获得的参数是准确可信的，可以应用于地下核废料处置、水利水电地下硐室、水下隧道、采矿等工程有关问题的研究中，为能源的开发利用提供有效的研究手段。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：岩石力学, 大尺度单裂隙介质, 应力&ndash, 渗流耦合, 渗透系数, 测试方法, 密封技术

Abstract：A system for measuring seepage characteristics of the fractured rock with the water flow developed in-house is described in the paper. The normal and shear loads can be applied synchronously and asynchronously to the medium. The maximum loading is 1 000 kN and the maximum displacement is 100 mm. A new method of sealing was employed with the sealing ring set on the rock surface. The calculation of the permeability of the system was recommended according to the Darcy?s law and the Cubic law. Fine sands were stick onto the rock surface to simulate the roughness of the rock surface. The seepage tests were carried out using the system to the large size granite sample with a single fracture. The permeability was found to increase with the time until it reached a stable value. The seepage test was carried on the smooth(without fine sands) rock surface. The factor influencing the permeability was analyzed and the fine sands on the rock surface were found to be crucial. The testing results showed that the parameters obtained with the system were creditable.

Key words： rock mechanics large scaled single fractured medium the coupling mechanism of seepage and stress permeability measuring method sealing technology

引用本文:

满轲1，2，刘晓丽3，苏锐1，2，王驹1，2，周宏伟4，赵阳4. 大尺度单裂隙介质应力–渗流耦合试验台架及其渗透系数测试研究[J]. 岩石力学与工程学报, 2015, 34(10): 2064-2072.
MAN Ke1，2，LIU Xiaoli3，SU Rui1，2，WANG Ju1，2，ZHOU Hongwei4，ZHAO Yang4. PERMEABILITY MEASURING OF LARGE SCALED SINGLE FRACTURED MEDIA WITH A SEEPAGE-STRESS COUPLING TESTING APPARATUS. , 2015, 34(10): 2064-2072.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2015.1004 或 http://www.rockmech.org/CN/Y2015/V34/I10/2064

[4]	XIONG X B，LI B，JIANG Y J，et al. Experimental and numerical study of the geometrical and hydraulic characteristics of a single rock fracture during shear[J]. International Journal of Rock Mechanics and Mining Sciences，2011，48(8)：1 292-1 302. " target="_blank">
[7]	陈平，张有天. 裂隙岩体渗流与应力耦合分析[J]. 岩石力学与工程学报，1994，13(4)：299-308.(CHEN Ping，ZHANG Youtian. Coupling analysis of seepage stress for jointed rock[J]. Chinese Journal of Rock Mechanics and Engineering，1994，13(4)：299-308.(in Chinese))
[9]	蒋宇静，李博，王刚，等. 岩石裂隙渗流特性试验研究的新进展[J]. 岩石力学与工程学报，2008，27(12)：2 377-2 386.(JIANG Yujing，LI Bo，WANG Gang，et al. New advances in experimental study on seepage characteristics of rock fractures[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(12)：2 377-2 386. (in Chinese))
[14]	荣冠，周创兵，王恩志. 裂隙岩体渗透张量计算及其表征单元体积初步研究[J]. 岩石力学与工程学报，2007，26(4)：740-746. (RONG Guan，ZHOU Chuangbing，WANG Enzhi. Preliminary study on permeability tensor calculation of fractured rock mass and its representative elementary volume[J]. Chinese Journal Rock and Mechanics and Engineering，2007，26(4)：740-746.(in Chinese))
[15]	王媛，速宝玉，徐志英. 裂隙岩体渗流模型综述[J]. 水科学进展， 1996，7(3)：276-282.(WANG Yuan，SU Baoyu，XU Zhiying. Comment on the models of seepage flow in fractured rock mass[J]. Advances in Water Science，1996，7(3)：276-282.(in Chinese))
[17]	孙蓉琳，梁杏，靳孟贵. 裂隙岩体渗透系数确定方法综述[J]. 水文地质工程地质，2006，33(6)：120-123.(SUN Ronglin，LIANG Xing，JIN Menggui. Review on determination of hydraulic conductivity of fractured rocks[J]. Hydrogeology and Engineering Geology，2006，33(6)：120-123.(in Chinese))
[1]	潘自强，钱七虎. 高放废物地质处置战略研究[M]. 北京：原子能出版社，2009：5-10.(PAN Ziqiang，QIAN Qihu. Strategic research for deep geological disposal of high level radioactive waster[M]. Beijing：Atomic Energy Press，2009：5-10.(in Chinese)) " target="_blank">
[2]	王驹，范显华，徐国庆，等. 中国高放废物地质处置十年进展[M].北京：原子能出版社，2004：1-20.(WANG Ju，FAN Xianhua，XU Guoqing，et al. Geological disposal of high level radioactive waster in China：process in lst decade[M]. Beijing：Atomic Energy Press，2004：1-20.(in Chinese)) " target="_blank">
[6]	LI B，KOYAMA T，JIANG Y J. Evaluation of flow field and aperture evolution in rock fracture during shear process using visualization technique[C]// Proceedings of the International Conference on Rock Joints and Jointed Rock Masses. Tucson：[s. n.]，2009：106-118. " target="_blank">
[13]	耿克勤，陈凤翔，刘光延，等. 岩体裂隙渗流水力特性的实验研究[J]. 清华大学学报：自然科学版，1996，36(1)：102-106.(GENG Keqin，CHEN Fengxiang，LIU Guangyan，et al. Experimental research on hydraulic properties of seepage flow in fracture[J]. Journal of Tsinghua University：Science and Technology，1996，36(1)：102-106.(in Chinese))
[21]	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)：1 285-1 291.(XIA Caichu，WANG Wei，WANG Xiaorou. Development of coupling shear-seepage test system for rock joints[J]. Chinese Journal Rock and Mechanics and Engineering，2008，27(6)：1 285-1 291.(in Chinese)) " target="_blank">
[3]	刘佑荣，唐辉明. 岩体力学[M]. 武汉：中国地质大学出版社，1999：18-36.(LIU Yourong.，TANG Huiming. Rock mass mechanics[M]. Wuhan：China University of Geosciences Press，1999：18-36.(in Chinese)) " target="_blank">
[5]	LI B，JIANG Y J，KOYAMA T，et al. Experimental study on hydro-mechanical behavior of rock joints by using parallel-plates model containing contact area and artificial fractures[J]. International Journal of Rock Mechanics and Mining Sciences，2008，45(3)：362-375.
[8]	张电吉，白世伟，杨春和. 裂隙岩体渗透性分析研究[J]. 勘探科学技术，2003，21(1)：24-27.(ZHANG Dianji，BAI Shiwei，YANG Chunhe. Research on seepage property of fractured rock[J]. Site Investigation Science and Technology，2003，21(1)：24-27.(in Chinese))
[10]	ESAKI T，DU S，MITANI Y，et al. Development of a shear-flow test apparatus and determination of coupled properties for a single rock joint[J]. International Journal of Rock Mechanics and Mining Sciences，1999，36(5)：641-650. " target="_blank">
[11]	贺玉龙，杨立中. 围压升降过程中岩体渗透率变化特性的试验研究[J]. 岩石力学与工程学报，2004，23(3)：415-419.(HE Yulong，YANG Lizhong. Testing study of variational characteristics of rockmass permeability under loading-unloading of confining pressure[J]. Chinese Journal Rock and Mechanics and Engineering，2004，23(3)：415-419.(in Chinese))
[12]	徐礼华，谢妮. 岩石剪切裂隙渗流特性试验与理论研究[J]. 岩石力学与工程学报，2009，28(11)：2 249-2 257.(XU Lihua，XIE Ni. Test and theoretical research on permeability characteristics of shear fracture in rock mass[J]. Chinese Journal Rock and Mechanics and Engineering，2009，28(11)：2 249-2 257.(in Chinese))
[16]	纪成亮，李晓昭，王驹，等. 裂隙岩体渗透系数确定方法研究[J]. 工程地质学报，2010，18(2)：235-240.(JI Chengliang，LI Xiaozhao，WANG Ju，et al. Discrete fracture network model for hydraulic conductivity of fractured rock mass[J]. Journal of Engineering Geology，2010，18(2)：235-240.(in Chinese))
[18]	LOUIS C. Determination of in situ hydraulic parameters in jointed rock[C]// Proceedings of Second Congress on Rock Mechanics. Belgrade：[s. n.]，1970：40-45. " target="_blank">
[19]	HSIEH P A，NEUMAN S P. Field determination of the three dimensional hydraulic conductivity tensor of anisotropic media[J]. Water Resource Research，1985，21(11)：1 655-1 665. " target="_blank">
[20]	SNOW D T. Anisotropic permeability of fractured media[J]. Water Resource Research，1969，5(6)：1 273-1 289. " target="_blank">
[22]	夏才初，王伟，曹诗定. 节理在不同接触状态下的渗流特性[J]. 岩石力学与工程学报，2010，29(7)：1 297-1 306.(XIA Caichu，WANG Wei，CAO Shiding. Flow characteristics of joints under different contact conditions[J]. Chinese Journal Rock and Mechanics and Engineering，2010，29(7)：1 297-1 306.(in Chinese))