岩土力学2009，Vol.30Issue(12)：3783-3787,3792,6.
岭澳核电三期强风化角岩边坡岩体直剪试验研究
Field shearing test for heavily weathered hornstone of Three Phase Project of Ling'ao Nuclear Power Station
摘要
Abstract
By using the method of preloading as vertical reaction, the field shearing test of heavily weathered hornstone side slope rock mass are carried out under the natural and the saturated condition. the shear stress - shear deformation relation curves under different normal stress levels and shear strength parameters are obtained. Based on the results of field shearing test, the effect of strength and deformation on mechanical-hydro coupling process and the change rule of the shear stress along with different normal stresses and the shear stress-deformation relation curves characteristics are analyzed. The test results indicate that, the peak shear strength and the yield shear strength increase with the increase of the normal stress; and the change of water content has not influence on the change rule of the shear stress along with different normal stresses. The shear strength decreases with the increase of water content; and it is especially sensitive under the low normal stress. Attenuated function for cohesive force of water is more obvious, and simultaneously has enlarged the rock mass amount of deformation and lengthened the rock mass distortion process. Modulus of compression of rock mass can be estimated by vertical deformation tested in the field shearing test.关键词
强风化角岩/边坡岩体/现场直接剪切试验/强度/应力-应变关系Key words
heavily weathered hornstone/ side slope rock mass/ field shearing test/ strength/ stress-strain relationship分类
建筑与水利引用本文复制引用
鲁祖德,陈从新,陈建胜,童志怡,左保成,戴旭明..岭澳核电三期强风化角岩边坡岩体直剪试验研究[J].岩土力学,2009,30(12):3783-3787,3792,6.基金项目
国家自然科学基金项目(No. 10872207)资助. （No. 10872207）
