Strip coal pillar stability testing device and testing method
A technology of stability test and strip coal pillar, which is applied in measuring device, using stable tension/pressure to test material strength and strength characteristics, etc., can solve the problem of ignoring the coupling effect of coal and rock mass size effect, which is difficult and has large errors. and other problems, to achieve the effect of simple assembly, convenient operation and firm structure
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[0034] Such as Figure 1 to Figure 6 As shown, this embodiment provides a strip coal pillar stability test device, which includes a test box, a loading unit, a test rack, and a water supply unit. The test box includes a lower plate 11, a rear side plate 12, a front side plate 13, a left side plate 14, a right side plate 15 and an upper plate 16. The left edge, right edge and lower edge of the left side plate 14 are provided with grooves 9 in which cylindrical rubber strips are assembled and connected, and the left edge, right edge and lower edge of the right side plate 15 are provided with grooves 9. A cylindrical rubber strip is assembled and connected in the groove 9. The left side plate 14 or the right side plate 15 is provided with a test connection hole 6, the signal line of the sensor and the water pipe 55 connected to the water bladder 34 pass through the test connection hole 6 to connect to the computer. After laying the required signal line and water pipe 55, use Sup...
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