高温三轴盐岩溶解特性试验机研制及应用

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摘要高温三轴条件下盐岩溶解特性的研究是盐岩油气地下储库安全快速建造和形状控制的基础。提出实现高温三轴盐岩溶解特性的试验方法，推导盐岩溶解速率的计算公式并进行误差分析。基于该方法，成功研制出高温三轴盐岩溶解特性试验机，该试验机最高试验温度95 ℃，三轴室最大轴力400 kN，围压30 MPa，能对直径50和100 mm的标准盐岩试样或长宽均为50 mm、高为100 mm的长方体盐岩试样进行高温三轴溶解特性试验。试验机可解决高温及三轴条件下溶解水流通过盐岩试样的关键技术问题和高温环境下的系列密封、加压稳压及仪器腐蚀等问题。最后，应用研制的试验机对一盐岩油气地下储库的盐样进行高温三轴溶解特性试验。试验结果表明：该试验机可以满足试验要求，试验过程稳定、数据精度较高、系统可靠性好。该试验机可用于盐岩水溶开采及利用地下盐穴储存石油、天然气和放射性核废料等地下工程的盐岩溶解特性研究，为盐穴的安全快速建造和形状控制提供必要的基础参数。

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关键词 ：岩石力学, 盐岩, 溶解特性, 高温, 三轴压缩, 试验机

Abstract：The studies of dissolution characteristics of salt rock under high temperature and triaxial pressure are the basis of quickly and safely constructing the underground storage and controlling its shape. The test method for the dissolution characteristics of salt rock under high temperature and triaxial compression is put forward. The formula for calculating the dissolving rate of salt rock is deduced and the error analysis is carried out. Based on this method，the triaxial testing machine with high temperature for dissolution characteristics of salt rock is successfully developed. The highest test temperature of the machine is 95 ℃；the maximum axial force is 400 kN and the maximum confining pressure is 30 MPa. The standard salt rock sample with 50 mm or 100 mm in diameter or rectangular sample with size of 50 mm×50 mm×100 mm can be tested by using this self-developed testing machine. The key technical problems of the water passing through the salt rock test sample and the questions of the seal，keeping pressure and corrosion of machine under high temperature are solved. The testing machine is used to test the sample obtained from a rock salt gas storage. The results show that the testing process is stable；the testing data has high precision and the testing system is reliable. The testing machine can be used to study the dissolution characteristics of salt rock for the underground project such as solution mining of salt rock and using the underground salt cave to store the petroleum，gas or radioactive nuclear waste. The results provide the basic parameters for quickly and safely constructing salt cave and controlling its shape.

Key words： rock mechanics salt rock dissolution characteristics high temperature triaxial compression testing machine

收稿日期: 2010-06-25

引用本文:

任松1，杨春和1，2，姜德义1，李小勇1，宋书一1. 高温三轴盐岩溶解特性试验机研制及应用[J]. 岩石力学与工程学报, 2011, 30(2): 289-295.
REN Song1，YANG Chunhe1，2，JIANG Deyi1，LI Xiaoyong1，SONG Shuyi1. DEVELOPMENT OF A NEW TRIAXIAL TESTING MACHINE WITH HIGH TEMPERATURE FOR DISSOLUTION CHARACTERISTICS OF SALT ROCK AND ITS APPLICATION. , 2011, 30(2): 289-295.

链接本文:

http://www.rockmech.org/CN/Y2011/V30/I2/289

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