高温三轴盐岩溶解特性试验机研制及应用

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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

Received: 25 June 2010

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

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