|本期目录/Table of Contents|

[1]张淑坤,王来贵,唐楠楠.化学腐蚀-冻融条件下加载岩石能量演化规律及耗散模型研究*[J].中国安全生产科学技术,2022,18(6):148-154.[doi:10.11731/j.issn.1673-193x.2022.06.022]
　ZHANG Shukun,WANG Laigui,TANG Nannan.Study on energy evolution law and dissipation model of loaded rock under chemical corrosion and freeze-thaw conditions[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2022,18(6):148-154.[doi:10.11731/j.issn.1673-193x.2022.06.022]
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化学腐蚀-冻融条件下加载岩石能量演化规律及耗散模型研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
18
期数:
2022年6期
页码:
148-154
栏目:
职业安全卫生管理与技术
出版日期:
2022-06-30

文章信息/Info

Title:
Study on energy evolution law and dissipation model of loaded rock under chemical corrosion and freeze-thaw conditions
文章编号:
1673-193X(2022)-06-0148-07
作者:
张淑坤; 王来贵; 唐楠楠
(1.枣庄学院 城市与建筑工程学院，山东 枣庄 277160;
2.辽宁工程技术大学 力学与工程学院，辽宁 阜新 123000)
Author(s):
ZHANG Shukun;  WANG Laigui;  TANG Nannan
(1.School of City and Architecture Engineering,Zaozhuang University,Zaozhuang Shandong 277160,China;
2.School of Mechanics and Engineering,Liaoning Technical University,Fuxin Liaoning 123000,China)
关键词:
化学腐蚀; 冻融循环; 岩石; 能量耗散模型
Keywords:
chemical corrosion;  freeze-thaw cycle;  rock;  energy dissipation model
分类号:
X947；TU45
DOI:
10.11731/j.issn.1673-193x.2022.06.022
文献标志码:
A
摘要:
为研究在化学腐蚀和冻融循环复合作用下岩石的能量演化规律，以大理岩为研究对象，分析冻融腐蚀岩样能量演化过程，建立与强度衰减参数、pH、冻融次数相关的能量耗散模型，以期为长期服役岩石力学工程安全稳定性评价提供理论支持。研究结果表明：化学腐蚀冻融复合作用下，腐蚀孔隙为水增加了入渗通道，冻胀裂隙同时也为腐蚀溶液提供了贯穿的通道，加剧了岩石内部结构的崩解与裂隙扩展贯通；相同冻融循环次数下，HNO3溶液中的腐蚀岩石弹性模量降幅最高，NaCl溶液次之，NaOH溶液最低；腐蚀岩石弹性应变能的吸收和耗散能的释放，随着冻融循环次数的增大而减小；建立的能量耗散模型对于岩石峰后阶段耗散能具有较高的准确性，能较好地模拟岩石峰后能量转化特征。
Abstract:
In order to study the energy evolution law of rock under the combined action of chemical corrosion and freeze-thaw cycle,taking marble as the research object,the energy evolution process of freeze-thaw corrosion rock samples was analyzed.The energy dissipation models related to the strength attenuation parameters,pH and freeze-thaw cycles were established to provide theoretical support for the safety and stability evaluation of rock mechanics engineering in long-term service.The results showed that under the combined action of chemical corrosion and freeze-thaw,the corrosion pores increased the infiltration channel for water,and the frost heaving cracks also provided a penetrating channel for the corrosion solution,which aggravated the disintegration of the internal structure of rock and the fracture propagation.Under the same freeze-thaw cycles,the decrease in the elastic modulus of corroded rock in HNO3 solution was the highest,followed by NaCl solution,and NaOH solution was the lowest.The absorption of elastic strain energy and release of dissipated energy of corroded rock decreased with the increase of freeze-thaw cycles.The established energy dissipation model had high accuracy for the dissipation energy of rock in after peak stage,and it could better simulate the energy conversion characteristics of rock after peak.

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备注/Memo

备注/Memo:
收稿日期： 2021-08-01；网络首发日期： 2022-06-21
* 基金项目： 国家自然科学基金青年基金项目(51704143);辽宁省自然科学基金项目(2020-MS-302)
作者简介： 张淑坤，博士，副教授，主要研究方向为岩土工程。
更新日期/Last Update: 2022-07-10