| 高应力区岩石统计损伤本构模型研究 |
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| 引用本文： | 贾逸,魏良帅,黄安邦,和铭,黄细超,蓝康文.高应力区岩石统计损伤本构模型研究[J].水文地质工程地质,2019,0(2):118-118. |
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| 作者姓名： | 贾逸 魏良帅 黄安邦 和铭 黄细超 蓝康文 |
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| 作者单位： | 1. 中国地质科学院探矿工艺研究所，四川〖KG-*3〗成都611734；2. 中国地质调查局地质灾害防治技术中心，四川〖KG-*3〗成都611734；3. 成都理工大学地质灾害防治与地质环境保护国家重点实验室，四川〖KG-*3〗成都610059；4. 西南交通大学地球科学与环境工程学院，四川〖KG-*3〗成都610031 |
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| 基金项目： | 中国地质调查局二级项目（DD20160287） |
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| 摘 要： | 为了反映高应力区岩石变形破坏全过程，通过引入双参数抛物线型Mohr强度准则，建立适用于高应力区岩体的微元强度度量方式，并假定由该度量方式得到的微元强度服从幂函数概率密度分布，结合连续损伤理论，考虑损伤变量修正，建立一个新的适用于高应力区岩体的统计损伤本构模型。以高应力区英安岩为验证对象，进行常规三轴压缩试验，依据岩石应力-应变曲线特征，给出模型参数确定方法。引用基于线性Mohr强度准则而建适用于浅部低应力水平岩体的相关统计损伤模型，利用该模型和所建模型对高应力区英安岩和相关文献中的高应力区砂岩、花岗岩试验数据进行验证，对比试验曲线和理论曲线，证明所建模型的可行性和适用性，并对英安岩累积损伤的扩展过程进行分析。
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| 关 键 词： | 高应力 岩石 统计损伤 强度准则 本构模型 |
| 收稿时间： | 2018-07-15 |
| 修稿时间： | 2018-09-19 |
A study of the statistical damage constitutive model of rock in high stress areas |
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| JIA Yi,WEI Liangshuai,HUANG Anbang,HE Ming,HUANG Xichao,LAN Kangwen.A study of the statistical damage constitutive model of rock in high stress areas[J].Hydrogeology and Engineering Geology,2019,0(2):118-118. |
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| Authors: | JIA Yi WEI Liangshuai HUANG Anbang HE Ming HUANG Xichao LAN Kangwen |
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| Affiliation: | 1.Institute of Exploration Technology, Chinese Academy of Geological Sciences, Chengdu, Sichuan611734, China; 2. Technical Center for Geological Hazard Prevention and Control, China Geological Survey, Chengdu, Sichuan611734, China; 3. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, Sichuan610059, China; 4. School of Geosciences and Environment Engineering, Southwest Jiaotong University, Chengdu, Sichuan610031, China |
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| Abstract: | In order to reflect the whole process of rock deformation and failure in high stress areas, the parabolic Mohr strength criterion is introduced. The micro-unit strength measurement method for rock mass in high stress areas is established, and it is assumed that the element strength obeys the power function probability density distribution. The continuum damage theory is combined and the correction of damage variable is considered. A new statistical damage constitutive model of rock in high stress areas is also established. The conventional triaxial compression test of dacite in high stress areas is conduced, and the method of determining the model parameters is given according to the characteristics of stress-strain curves of rock. A related statistical damage model based on the linear Mohr strength criterion for rock under a shallow low stress level is quoted, and the quoted model and the model built in this paper are used to verify the test data of the dacite, sandstone and granite in high stress areas in related literatures. The feasibility of the model is proved by comparing the test curves with the theoretical curves. The damage accumulation and energy dissipation of dacite in high stress areas are analyzed. The correctness of damage correction factor is proved from the energy point of view and the energy change law during rock deformation and failure is studied. The rationality of the model is reflected. |
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