岩盐三轴压缩试验方法及数据处理方式的对比研究

发布时间：2018-06-02 12:08

本文选题：岩盐 + 短期强度　；参考：《岩土力学》2014年02期

【摘要】：在能源地下储存及废弃物地下处置库的设计、施工、运行中,岩盐的强度和变形特征是极为重要的参数。正确地获得岩盐的强度参数对地下储存库的设计和安全运行具有重要意义。分别选定江苏金坛和湖北江汉岩样作为试验样本,通过三轴压缩试验获得岩盐短期强度和变形的力学参数,比较并总结了以德国为代表的欧美国家与国内试验方法及数据处理方式的异同。同时介绍了德国短期强度试验确定岩盐损伤起始点的方法及其不足,提出了更为精确地确定方法并确定了金坛岩盐损伤起始点。分析发现:对于大变形岩盐,国内测量的强度数据普遍偏高,应采用横截面积修正以及科学应变代替工程应变的度量方式。
[Abstract]:In the design, construction and operation of underground storage of energy and waste, the strength and deformation characteristics of rock salt are very important parameters. It is important for the design and safe operation of underground storage to obtain the strength parameters of rock salt correctly. The rock samples of Jintan and Jianghan of Jiangsu Province were selected as test samples, and the mechanical parameters of short-term strength and deformation of rock salt were obtained by triaxial compression test. The similarities and differences of test methods and data processing methods between European and American countries, represented by Germany, are compared and summarized. At the same time, the paper introduces the method of determining the starting point of rock salt damage by short term strength test in Germany and its deficiency, and puts forward a more accurate method to determine the starting point of rock salt damage in Jintan. It is found that the strength data of large deformation rock salt are generally high in China, and the cross section area correction and scientific strain should be used instead of engineering strain measurement.
【作者单位】：四川大学中德能源研究中心;四川大学建筑与环境学院;四川大学能源工程安全与灾害力学教育部重点实验室;德国克劳斯塔尔工业大学石油天然气工程研究所;德国下萨克森州能源研究中心;
【基金】：国家自然科学基金资助国际重大合作项目(No.51120145001);国家自然科学基金青年基金资助项目(No.51104102)
【分类号】：TU45

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