The Discussion of Issues Related to the Rock Mass Structure Classification of Dam Foundation

Abstract:

Because various lithologic rock present very obvious differences in many aspects (such as: the apparent lumpiness, longitudinal wave velocity, mechanical property etc), the results of the rock mass structure classification by using current specification or general methods can not reflect the true engineering geological properties. Based on a large number of onsite structural surface investigations, acoustic measurements and field and laboratory tests, this paper discusses the related issues on division of rock mass structure using single lumpiness indicators and analyzes the impact of the structural body property and structural surface effect on the rock mass structure. At the same time, the related issue on the integrality coefficient is discussed in the evaluation of rock mass integrity degree. Finally, the proposal which rock structure classification should consider the structure bodys strength and stiffness, the structure surfaces extension length and closed degree, the structure body block size and the rock mass compression wave velocity is put forward.

• Periodical: Applied Mechanics and Materials (Volumes 353-356)
• Pages: 167-171
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.353-356.167
• Online since: August 2013
• Authors: Liang Qin Tang, Kui Tang, De Xin Nie
• Keywords: Compression Wave Velocity, Deformation Modulus, Integrality Coefficient, Rock Mass Structure, Structure Body, Structure Surface

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