The invention discloses a
gas pressure measuring
system for a mining-induced fracture field of a
coal seam. The
gas pressure measuring
system comprises an exploration and collection device, a pluggingdevice and a measuring device. The exploration and collection device is installed in a borehole, and the plugging device is used for sealing the borehole. The exploration and collection device comprises a first
pipe body, a second
pipe body and a third
pipe body, wherein the third pipe body extends into the bottom of the borehole, and the first tube body is located on the outermost side of the borehole. The plugging device comprises a plugging
capsule, a
capsule connecting pipe and a
capsule operating platform. The measuring device comprises a
gas pressure gauge, an electronic pressure
measuring instrument and a gas collecting analyzer, wherein the gas pressure gauge, the electronic pressure
measuring instrument and the gas collecting analyzer are connected in sequence, wherein the gas pressure gauge is connected to the front portion of the first pipe body. According to the gas pressure measuring
system for the mining-induced fracture field of the
coal seam, the stress of a mining-induced fracture of the
coal seam can be analyzed, an excavation position is marked, so that the formation stress and gas seepage pressure are calculated, thus the occurrence of coal mine gas dynamic disasters are effectively prevented, and the gas
pressure data can be automatically and periodically recorded, stored and transmitted.