Coal-rock mass ground stress continuous testing device and method thereof
A testing device and testing method technology, applied in hydraulic/pneumatic measurement and other directions, can solve problems such as poor initial adaptability, achieve real-time testing, reduce testing workload, and operate quickly
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[0061] The present invention is mainly composed of three parts: a ground stress sensor, a data acquisition instrument and a high-pressure oil pump, which will be described separately below.
[0062] (1) Ground stress sensor
[0063] The ground stress sensor is composed of a front capsule pressure sensor 1, a high-pressure oil pipe 2, a tee 3, an electronic digital display hydraulic sensor 4, a valve 5 and a quick-change connector 6. The capsule pressure sensor 1 has a diameter of ф39~100mm and a full length of L 1 110~400mm, sensing part L 2 Length 70~320mm; high pressure oil pipe 2 length L 3 It is 0-50m, depending on site requirements; the electronic digital display hydraulic sensor 4 can be connected with the existing coal mine safety monitoring system substation, and the data can be transmitted to the ground monitoring host in real time, and then to the terminal computers; valve 5 It is a shut-off valve.
[0064] a. Capsule pressure sensor 1 adopts high pressure expansion hose, w...
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