Gas pressure measuring system for mining-induced fracture field of coal seam

Abstract

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.

Description

technical field [0001] The invention relates to the technical field of gas pressure measurement, in particular to a gas pressure measurement system for a coal seam mining fissure field. Background technique [0002] Gas pressure and gas content are important parameters to indicate the state of coal seam gas occurrence. It is a key basic parameter in the study of coal and gas outburst, gas gushing, and gas drainage in mines. Therefore, in order to study the law of coal seam gas occurrence and gushing, it is necessary to carry out coal seam gas pressure and gas content. Determination. In recent years, my country's coal mining technology and equipment have been greatly improved, the mining intensity has increased, and the output of coal mines has also increased. At the same time, the amount of gas emitted from coal seams has also increased significantly. While the industry is developing rapidly, it also leaves hidden dangers for coal mine power disasters and brings higher-lev...

AI Technical Summary

Problems solved by technology

The existing coal seam mining fracture field gas pressure measurement is relatively simple, it is difficult to carry out in-depth measurement, and it is difficult for people to intuitively observe the specific situation of coal seam mining fracture field gas pressure

In addition, when the stratum structure is complex or the roadway is arranged in a soft rock formation, it is necessary to use upward drilling in the soft coal rock to measure the gas parameters, and the traditional gas measurement device cannot effectively solve the problem of soft coal. Problems of gas measurement in rock

Images