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| EVALUATION OF APPLICATION EFFECT OF CEMENT-CHEMICAL COMPOUND GROUTING IN FAULT REINFORCEMENT |
| HAO Minghui1，DANG Yuhui2，XING Huige3，YAO Xin2，ZHOU Jiawen1 |
(1. State Key Laboratory of Hydraulics and Mountain River Engineering，Sichuan University，Chengdu，Sichuan 610065，China；
2. SinoHydro Bureau 7 Co.，Ltd.，SinoHydro Group Ltd.，Chengdu，Sichuan 611730，China；
3. College of Architecture and Environment，Sichuan University，Chengdu，Sichuan 610065，China) |
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Abstract The broken rock masses with poor mechanical and permeability properties in fault f2 at Jinping I hydropower station have an adverse effect on the bearing capacity of foundation；and cement-chemical compound technology was used to reinforce it in the engineering practice. Through the wave velocity，deformation modulus in hole and physico-mechanical test in laboratory，the major indexes such as porosity，compressive and shear strengths have been deeply studied. Furthermore，the scanning electron microscope(SEM) was adopted to analyze the microstructure and the filling situation of rock after grouting. Experimental results show that wave velocity and shear strength of rock mass in fault are increased obviously and meet the requirement of design；microcracks in rock are well filled by chemical material；and the minimum crack is only 0.01 mm. The cement-chemical compound grouting technology can improve the integrity and mechanical properties of the rock mass in fault zone；and it is an effective method to reinforce weak structural plane in rock masses.
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Received: 19 May 2013
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| [1] 周家文，徐卫亚，李明卫，等. 岩石应变软化模型在深埋隧洞数值分析中的应用[J]. 岩石力学与工程学报，2009，28(6)：1 116–1 127. (ZHOU Jiawen，XU Weiya，LI Mingwei，et al. Application of rock strain softening model to numerical analysis of deep tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(6)：1 116–1 127.(in Chinese))
[2] 宋胜武，冯学敏，向柏宇，等. 西南高陡岩石边坡工程关键技术研究[J]. 岩石力学与工程学报，2011，30(1)：1–22.(SONG Shengwu，FENG Xuemin，XIANG Baiyu，et al. Research on key technologies for high and steep rock slopes of hydropower engineering in southwest China[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(1)：1–22.(in Chinese))
[3] 王建国，王振伟，王来贵，等. 受控于软弱结构面的矿山软岩边坡稳定性[J]. 辽宁工程技术大学学报，2006，25(5)：686–688.(WANG Jianguo，WANG Zhenwei，WANG Laigui，et al. Soft-rock slope stability of mine controlled by weak structure plane[J]. Journal of Liaoning Technical University，2006，25(5)：686–688.(in Chinese))
[4] 葛家良. 化学灌浆技术的发展与展望[J]. 岩石力学与工程学报，2006，25(增2)：3 384–3 392.(GE Jialiang. Development and prospect of chemical grouting techniques[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(Supp.2)：3 384–3 392.(in Chinese))
[5] 王 胜，黄润秋，祝华平. 锦屏一级水电站f5断层、煌斑岩脉复合灌浆技术研究[J]. 工程地质学报，2012，20(3)：440–446.(WANG Sheng，HUANG Runqui，ZHU Huaping. Analysis of compound grouting technology for fault f5 and lamprophyre vein at Jinping I hydropower station[J]. Journal of Engineering Geology，2012，20(3)：440–446.(in Chinese))
[6] 孙 钊. 大坝基岩灌浆[M]. 北京：水利水电出版社，2004：2–5.(SUN Zhao. Grouting of dam?s rock foundation[M]. Beijing：China Water Power Press，2004：2–5.(in Chinese))
[7] 方平德. 天生桥二级水电站一号引水隧洞第二不良地质段化学灌浆综合处理[J]. 水利水电技术，1995，26(5)：26–30.(FANG Pingde. Chemical grouting application in the unfavorable geology section of diversion tunnel，Tianshengqiao II hydropower station[J]. Water Resources and Hydropower Engineering，1995，26(5)：26–30.(in Chinese))
[8] 陈珙新，祝 红，熊 进. 三峡工程F215断层复合灌浆处理试验研究[J]. 长江科学院院报，2000，17(6)：9–11.(CHEN Gongxin，ZHU Hong，XIONG Jin. Experimental research on compound grouting treatment at fault F215 of TGP[J]. Journal of Yangtze River Scientific Institute，2000，17(6)：9–11.(in Chinese))
[9] 温 帅，汪家林，刘道华，等. 灰绿岩脉复合灌浆试验加固效果研究[J]. 岩石力学与工程学报，2009，28(6)：1 231–1 238.(WEN Shuai，WANG Jialin，LIU Daohua，et al . Experimental research on reinforcement effect of compound grouting on diabase dikes[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(6)：1 231–1 238.(in Chinese))
[10] 全 海. 河床覆盖层高压旋喷灌浆效果检测[J]. 岩石力学与工程学报，2006，25(2)：289–293.(QUAN Hai. Detection of effect of high-pressure rotary shotcrete grouting on river bed cover[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(2)：289–293.(in Chinese))
[11] 彭苏萍，谢和平，何满朝，等. 沉积相变岩体声波速度特征的试验研究[J]. 岩石力学与工程学报，2005，24(16)：2 831–2 837.(PENG Suping，XIE Heping，HE Manchao，et al. Experimental study on velocity characteristics of lithofacies transition rock mass[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(16)：2 831– 2 837.(in Chinese))
[12] 尹健民，艾 凯，刘坤元，等. 钻孔弹性模量法评价小湾水电站坝基岩体卸荷特征[J]. 长江科学院院报，2006，23(4)：44–46.(YIN Jianmin，AI Kai，LIU Kunyuan，et al. Unloading characteristic evaluation of Xiaowan hydropower station foundation rock mass by borehole elasticity modulus method[J] Journal of Yangtze River Scientific Institute，2006，23(4)：44–46.(in Chinese))
[13] 中华人民共和国行业标准编写组. DL/T5368—2007水利水电工程岩石试验规程[S]. 北京：中国电力出版社，2007.(The Professional Standards Compilation Group of People?s Republic of China. DL/T5368—2007 Specifications for rock tests in water conservancy and hydroelectric engineering[S]. Beijing：China Electric Power Press，2007.(in Chinese))
[14] 中华人民共和国国家标准编写组. GB50287—99 水利水电工程地质勘察规范[S]. 北京：中国计划出版社，1999.(The National Standards Compilation Group of People?s Republic of China. GB50287—99 Code for water resources and hydropower engineering geological investigation[S]. Beijing：China Planning Press，1999.(in Chinese)) |
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2013, Vol. 32 
