Apparatus and method for chemical-stress coupling test of single fracture rock mass

Abstract

The invention discloses an apparatus for chemical-stress coupling test of a single fracture rock mass. The apparatus comprises a pressure chamber and a water seal device. The apparatus has the following advantages: 1, the special pressure chamber is made of a transparent high-strength glass fiber reinforced plastic material, so the expansion state of the prefabricated crack of a sample can be easily observed; 2, an anticorrosive rubber sleeve is sleeved in the step cylinder of the water seal device, and is in close contact with the threaded tapered hole and the screw fillet of the pressure chamber, and the helicoid of a threaded cap is screwed to effectively avoid the seepage phenomenon of the contact surface of the threaded tapered hole of the pressure chamber and the step cylinder; 3, the special water seal device fills in the gap of high hydraulic pressure seal in traditional concrete and rock-like test piece hydraulic crack test; 4, the apparatus is used for researching the influences of the increase change of the hydraulic pressure of a warehouse on the crack slope rock mass; and 5, an axial pressure loading system and a hydraulic pressure loading system are mutually independent, and automatic preservation and automatic acquisition of hydraulic pressure and axial pressure data in the test process are realized.

Description

technical field [0001] The invention belongs to the field of rock mass engineering, and relates to a test device and method in rock mass engineering, in particular to a single-crack rock mass chemical-stress coupling test device and test method. Background technique [0002] There is a complex water-rock reaction in the fractured rock mass of the reservoir bank slope in the existing water environment. On the one hand, the existence of water pressure in the fracture will affect the stress field distribution around the fracture, and then change the stress intensity factor around the fracture. At the same time, the erosion of the aqueous solution on the fractured rock mass changes the microstructure of the rock mass, resulting in changes in the macroscopic mechanical properties; The cycle process increases the damage and deterioration of the fractured rock mass and affects the mechanical properties of the rock mass. Therefore, it is necessary to carry out experimental research...

AI Technical Summary

Problems solved by technology

Although this method can truly reflect the mechanical properties of the fractured rock mass, the process of prefabricating the cracks will cause damage to the rock mass and affect the test results.

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