We carried out full-scale model test of applying shotcrete and anchors to strengthen surrounding rock blocks.According to research achievements in this regard and engineering practice at Huangdao water-sealed cavern,we demonstrated and revealed that the anchoring effect could increase the self bearing capacity and restrain the deformation of surrounding rock. We also discussed the key issues inclusive of the design,materials,construction and monitoring of the anchor-shotcrete support for large underground water-sealed cavern. Measures such as applying anchor with low prestress,steel-fiber reinforced shotcrete,shotcrete containing silicon powder,as well as overall control over seepage water could increase the long-term stability of water-sealed cavern and prevent the groundwater seepage.
Key words
underground water-sealed cavern /
anchor-shotcrete support system;shotcrete /
low-prestressed rockbolt
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
[1] 程良奎. 岩土锚固的现状与发展[J]. 土木工程学报,2001,34(3):7-12.(CHENG Liang-kui. State and Development of Rock-Soil Anchorage[J]. Chinese Journal of Civil Engineering,2001,34(3):7-12.(in Chinese))
[2] 杨秀山,刘宗仁,郑谅臣. 黄河小浪底水利枢纽岩石力学研究与工程实践[M]∥中国岩石力学与工程-世纪成就. 王思敬编. 南京:河海大学出版社,2004:829-860.(YANG Xiu-shan,LIU Zong-ren,ZHENG Liang-cheng,et al. Research and Engineering Practice of Rock Mechanics of Xiaolangdi Water Conservancy Hub on the Yellow River[M]∥Century Achievements of Rock Mechanics and Engineering in China. Edited by WANG Si-jing. Nanjing:Hohai University Press,2004: 829-860.(in Chinese))
[3] 张孝松. 龙滩水电站地下洞室群布置与监控设计[J].岩石力学与工程学报,2005,24(21):3985-3988.(ZHANG Xiao-song. Layout and Monitoring-Controlling Design of Underground Openings and Tunnels for Longtan Hydropower Station[J]. Chinese Journal of Rock Mechanics and Engineering,2005,24(21): 3985-3988.(in Chinese))
[4] 康红普. 煤巷锚杆支护成套技术研究与实践[J]. 岩石力学与工程学报,2005,24(21):3959-3964.(KANG Hong-pu. Study and Application of Complete Rock Bolting Technology to Coal Roadway[J]. Chinese Journal of Rock Mechanics and Engineering,2005,24(21): 3959-3964.(in Chinese))
[5] 程良奎.喷锚支护的工作特性与作用原理[J]. 地下工程,1981,(6):1-8.(CHENG Liang-kui. Working Characteristics and Principles of Shotcrete and Rock Bolt Supporting [J]. Chinese Journal of Underground Engineering,1981,(6):1-8.(in Chinese))
[6] 程良奎,庄秉文.块状岩体锚喷支护的作用机理与设计[C]∥中国金属学会矿山岩石力学学术会议论文集. 北京:冶金出版社,1981.(CHENG Liang-kui,ZHUANG Bing-wen. Mechanism and Design of Shotcrete and Rock Bolt Supporting of Rock Block Body[C]∥Proceedings of Mine Rock Mechanics Conference Under China Metal Society. Beijing:Metallurgical Press,1981.(in Chinese))
[7] 程良奎. 喷射混凝土[M]. 北京:中国建筑工业出版社,1990. (CHENG Liang-kui. Shotcrete[M]. Beijing: China Architecture and Building Press,1990.(in Chinese))
[8] ISBN095224831X,European Specification for Sprayed Con-
crete[S]. UK: EFNARC,1996.
[9] VANDEWALLE M. Tunnelling is an Art[M]. Belgium: NV Bekaert SA,2005.
[10]程良奎,李象范. 岩石锚固·土钉·喷射混凝土——原理、设计与应用[M]. 北京:中国建筑工业出版社,2008. (CHENG Liang-kui,LI Xiang-fan. The Principles,Design and Application of Ground Anchorage,Soilnail and Shotcrete[M]. Beijing: China Architecture and Building Press,2008.(in Chinese))
PDF(1264 KB)
