T/GRM 008-2020 The experimental method for studying the evolution law of stress field under mining activities
T/GRM 008-2020 The experimental method for studying the evolution law of stress field under mining activities
Basic Information
Scope
Scope: This standard specifies the instruments and equipment for testing the evolution law of mining stress field, the specifications of test pieces, the temperature of the test environment, the test steps, and the test record forms, etc. This standard is applicable to the testing and calculation of the deformation and failure characteristics of coal and rocks during mining disturbance, as well as the temporal and spatial evolution law of the distribution of mining stress field; Main technical contents: 1. Instruments and equipment 2. Specifications of test pieces and temperature of the test environment 3. Test steps: - Simulating the evolution process of mining stress field - Considering the influence of vertical direction stress on the evolution process of mining stress field - Considering the influence of horizontal direction stress on the evolution process of mining stress field - Considering the influence of stress transfer speed on the evolution process of mining stress field