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| 受酸腐蚀砂岩的统计本构模型 | |
| 引用本文： | 霍润科,李宁,刘汉东. 受酸腐蚀砂岩的统计本构模型[J]. 岩石力学与工程学报, 2005, 24(11): 1852-1856 |
| 作者姓名： | 霍润科 李宁 刘汉东 |
| 作者单位： | 1. 西安理工大学,岩土工程研究所,陕西,西安,710048;西安建筑科技大学,土木工程学院,陕西,西安,710055 2. 西安理工大学,岩土工程研究所,陕西,西安,710048 3. 华北水利水电学院,岩土工程系,河南,郑州,450045 |
| 基金项目： | 陕西省自然科学研究资助项目(K01047)，陕西省教育厅专项科研计划资助项目(AJ01052) |
| 摘 要： | 基于钙质胶结砂岩受酸腐蚀机理主要为碳酸钙溶解导致孔隙扩大并且其分布具有随机性的事实，提出用Weibull分布函数反映岩石非均匀性的方法，建立受腐蚀岩石的非线性弹性本构方程。采用无扰动CT数计算了岩石的损伤变量，所得结果可用于估算均匀性系数，为酸雨地区岩石力学性质研究提供可借鉴的思路。 |
| 关 键 词： | 岩石力学 Weibull分布函数 均匀性系数 本构方程 |
| 文章编号： | 1000-6915(2005)11-1852-05 |
STATISTICAL CONSTITUTIVE MODEL OF SANDSTONE SUBJECTED TO HYDROCHLORIC ACID ATTACK |
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| HUO Run-ke,LI Ning,LIU Han-dong. STATISTICAL CONSTITUTIVE MODEL OF SANDSTONE SUBJECTED TO HYDROCHLORIC ACID ATTACK[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(11): 1852-1856 | |
| Authors: | HUO Run-ke LI Ning LIU Han-dong |
| Affiliation: | HUO Run-ke1,2,LI Ning1,LIU Han-dong3 |
| Abstract: | Based on the fact that calcium carbonate(CaCO3) is dissolved and the pore is expanded in the calcareous cementitious sandstone subjected to hydrochloric acid attack;and the strength of corroded rock has the characteristics of random distribution. The method to describe rock heterogeneity is proposed by in terms of Weibull distribution function and the nonlinear elastic constitutive equation of the corroded rock is established. The homogeneity coefficient is evaluated by means of nondestructive X-ray CT scanning technique. The results indicate that the acid environment has strong influence on mechanical properties of rock. |
| Keywords: | rock mechanics Weibull distribution function homogeneity coefficient constitutive equation |
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