孔径变形法测试地应力弹性模量参数选取分析

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (293 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract With the development of large-scale hydropower projects and the underground space constructions，the rock stress measurement and the influence of stress on engineering rock masses and constructions attract more and more attentions. Based on in-situ stress measurement of Huangdeng dam，the elastic moduli are obtained from the core confining pressure test，the interior compression modulus test and bearing plate test；and the elastic moduli are different. Therefore，the phenomena of difference are analyzed according to rock damage mechanics and rock mass properties under high confining pressures. Besides，stress relief process of measurement is analyzed based on unloading rock mass properties；and the effect of expansion on stress measurement is determined. The results show that with the increase in confining pressure，the elastic modulus of rock mass may grow positively mainly due to the compression of rock fractures；unloading rock mass may appear the phenomenon of serious expansion with the mechanical vibration. Considering the above analyses，a selecting principle of elastic modulus in aperture deformation method in in-situ stress measurement is proposed；and it would offer a reference to other similar projects.

Key words： rock mechanics unloading rock mass expansion phenomena fractured rock

Received: 13 May 2010

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors

Cite this article:

URL:

http://www.rockmech.org/EN/Y2010/V29/I10/2143

[4]	赖勇. 围压对杨氏模量的影响分析[J]. 重庆交通大学学报(自然科学版)，2009，28(2)：246-249，278.(LAI Yong. Effect analysis of confining pressure on Young¢s modulus[J]. Journal of Chongqing Jiaotong University(Nature Science)，2009，28(2)：246-249，278.(in Chinese)) " target="_blank">
[6]	HOLE E，BROWN E T. 岩石地下工程[M]. 连志升，田良灿，王维德等译. 北京：冶金工业出版社，1986.(HOLE E，BROWN E T. Underground excavation in rock[M]. Translated by LIAN Zhisheng，TIAN Liangcan，WANG Weide，et al. Beijing：China Metallurgical Industry Press，1986.(in Chinese)) " target="_blank">
[8]	蔡美峰，何满潮，刘东燕. 岩石力学与工程[M]. 北京：科学出版社，2002.(CAI Meifeng，HE Manchao，LIU Dongyan. Rock mechanics and engineering[M]. Beijing：Science Press，2002.(in Chinese)) " target="_blank">
[10]	张黎明，王在泉，王建新，等. 岩石卸荷破坏的试验研究[J]. 四川大学学报(工程科学版)，2006，38(3)：34-37.(ZHANG Liming，WANG Zaiquan，WANG Jianxin，et al. Experimental study on the rock behavior under unloading condition[J]. Journal of Sichuan University (Engineering Science)，2006，38(3)：34-37.(in Chinese)) " target="_blank">
[11]	王明洋，范鹏贤，李文培. 岩石的劈裂和卸荷破坏机制[J]. 岩石力学与工程学报，2010，29(2)：234-241.(WANG Mingyang，FAN Pengxian，LI Wenpei. Mechanism of splitting and unloading failure of rock[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(2)：234-241.(in Chinese))
[1]	国家地震局地质大队情报室. 地应力研究文集[M]. 北京：地震出版社，1984.(Geological Team of the State Seismological Bureau，Intelligence Unit. Research collection of stress[M]. Beijing：Earthquake Press，1984.(in Chinese)) " target="_blank">
[3]	HARRISON J P，HUDSON J A. 工程岩石力学[M]. 北京：科学出版社，2009.(HARRISON J P，HUDSON J A. Engineering rock mechanics[M]. Beijing：Science Press，2009.(in Chinese)) " target="_blank">
[13]	哈秋舲. 加载岩体力学与卸荷岩体力学[J]. 岩土工程学报，1998，20(1)：114.(HA Qiuling. Loading and unloading rock masses mechanics[J]. Chinese Journal of Geotechnical Engineering，1998，20(1)：144.(in Chinese))
[14]	谢红强，何江达，徐进. 岩石加卸荷变形特性及力学参数试验研究[J]. 岩土工程学报，2003，25(3)：336-338.(XIE Hongqiang，HE Jiangda，XU Jin. Deformation characteristics of rock under loading and unloading conditions and experimental study of mechanical parameters[J]. Chinese Journal of Geotechnical Engineering，2003，25(3)：336-338.(in Chinese))
[15]	余寿文，冯西桥. 损伤力学[M]. 北京：清华大学出版社，1997.(YU Shouwen，FENG Xiqiao. Damage mechanics[M]. Beijing：Tsinghua University Press，1997.(in Chinese)) " target="_blank">
[7]	张永兴. 岩石力学[M]. 北京：中国建筑工业出版社，2004.(ZHANG Yongxing. Rock mechanics[M]. Beijing：China Architecture and Building Press，2004.(in Chinese)) " target="_blank">
[2]	刘允芳，刘元坤. 围压试验在空心包体式应变计地应力测量中的作用[J]. 岩石力学与工程学报，2004，23(23)：3 932-3 937.(LIU Yunfang，LIU Yuankun. Function of confining pressure test on hollow inclusion triaxial strain gauge for geostress measurement[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(23)：3 932- 3 937.(in Chinese)) " target="_blank">
[5]	尤明庆. 岩石试样的杨氏模量与围压的关系[J]. 岩石力学与工程学报，2003，22(1)：53-60.(YOU Mingqing. Effect of confining pressure on the Young¢s modulus of rock specimen[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(1)：53-60.(in Chinese))
[9]	张政辉，蔡美峰. 岩石的卸荷力学特性及其对地应力测量的影响[J]. 矿冶，2001，10(3)：6-10.(ZHANG Zhenghui，CAI Meifeng. Mechanics properties of a rock in stress relief and their influences on in-situ stress measurement[J]. Mining and Metallurgy，2001，10(3)：6-10.(in Chinese)) " target="_blank">
[12]	李宏哲，夏才初，徐崇帮，等. 基于多级破坏方法确定岩石卸荷强度参数的试验方法[J]. 岩石力学与工程学报，2008，27(增1)：2 681-2 686.(LI Hongzhe，XIA Caichu，XU Chongbang，et al. Experimental study of rock unloading strength parameters based on multiple failure method[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(Supp.1)：2 681-2 686.(in Chinese)) " target="_blank">
[16]	中华人民共和国行业标准编写组. SL264-2001水利水电工程岩石试验规程[M]. 北京：中国水利水电出版社，2001.( The Professional Standards Compilation Group of People¢s Republic of China. SL264-2001 Specification for rock tests in water conservancy and hydroelectric engineering[M]. Beijing：China Water Power Press，2001.(in Chinese)) " target="_blank">