| abstract |
A device for testing the effect of coal seam liquid injection synergistic control of gas and dust, including a coal seam liquid injection similar simulation device and a dust production similar simulation device, the coal seam liquid injection similar simulation device and the dust production similar simulation device can be disassembled and assembled and connected, and the coal seam liquid injection Similar simulation devices include methane charging system, helium gas calibration system, high pressure liquid injection system, vacuum pumping system, coal sample loading kettle system and constant temperature system, methane outlet of methane charging system, helium gas outlet of helium gas calibration system, high pressure liquid injection The liquid outlet of the system and the air extraction port of the vacuum pumping system are connected to the air inlet of the coal sample loading kettle system by connecting in parallel. The components are all set in a constant temperature system. The invention can similarly simulate the overlying ground stress of the underground coal seam and the occurrence of gas under the coal seam liquid injection and the cutting coal body after the liquid injection to produce dust, and provides theoretical guidance for the in-depth study of the coal seam liquid injection synergistic control of gas and dust. |