RESEARCH ON SOME PROBLEMS ABOUT gravity STRESS OF Rock or soil FOUNDATION
Lu Tianqi1，Lu Huiqing2，Yang Jianhua2，Liu Guangting1
(1Department of Hydraulic and Hydropower Engineering，Tsinghua University， Beijing 100084 China) (2Testing Institute，Xinjiang Survey and Design Research Institute of Water Resources and Hydropower， Changji 831100 China)
Abstract：Based on the analyses of relations of physical and mechanical behavior indexes of rocks or soils，such as the variation of bulk density，natural void ratio and consolidation settlement along with depth or gravity stress，the laws of deadweight stress field of rock and soil are discussed. The bearing capacity of foundation of soft glutenite and the favorable effect of gravity stress on the bearing capacity are analyzed by using field loading test in a hydraulic project and Hoek-Brown strength criterion. The results show that distribution of gravity stress is complex，and tectonic stress field exists in shallow layers of the earth crust.
吕天启1 陆会清2 杨建华2 刘光廷1. 岩土地基自重应力相关问题的探讨*[J]. 岩石力学与工程学报, 2004, 23(S1): 4306-4310.
Lu Tianqi1，Lu Huiqing2，Yang Jianhua2，Liu Guangting1. RESEARCH ON SOME PROBLEMS ABOUT gravity STRESS OF Rock or soil FOUNDATION. , 2004, 23(S1): 4306-4310.
7Hoek E，Brown E T. Underground Excavations in Rock[M]. Hertford，England：Austin and Sons Ltd.，1980
8Hoek E，Brown E T. 岩石地下工程[M]. 连志升译. 北京：冶金工业出版社，1980
9Hoek E，Brown E T. The Hoek-Brown failure criterion－a 1988 update[A]. In：Proc. 15th Canadian Rock Mechanics Symposium[C]. Toronto：[s. n. ]，1988，251～259
10Hoek E.实用岩石工程技术[M]. 刘丰收译.河南：黄河水利出版社，2002
11Wyllie D C. Foundation on rock[M]. London：Chapman and Hall，1992
2004, Vol. 23 
