| abstract |
For testing a system for mining active process off-load coal and rock permeability, belong to Geotechnical Engineering field.This system comprises source of the gas tank, the first reduction valve, the second reduction valve, the first valve, the second valve, the 3rd valve, the 4th valve, the 5th valve, vacuum pump, gas voltage stabilizing heat control device, have the MTS confined pressure chamber of test specimen, the first pressure gauge, the second pressure gauge, first-class gauge, second gauge; Described gas voltage stabilizing heats control device and comprises gas boosting pump, gas heater controller, the first gas heater, high-pressure gas reactor, air compressor, tensimeter, the 6th valve, the 7th valve.Native system accurately can test off-load coal and rock permeability in mining active process, is applicable to coal seam exploitation. |