Crustal stress rapid measuring device and method of rock stratum under coal mine
A measurement method and technology of ground stress, applied in the field of mine research, to achieve the effects of portability, rapid measurement, and good sealing effect
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[0070] The present invention will be described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.
[0071] Such as figure 1 As shown, the embodiment of the present invention also provides a rapid measurement equipment for underground stress in rock formations, including hydraulic fracturing equipment for measuring ground stress;
[0072] The equipment for measuring ground stress by hydraulic fracturing (ie figure 1 Schematic diagram of pipeline connection for hydraulic fracturing measurement of ground stress) specifically includes drilling 1, outer high-pressure expansion capsule 2, inner high-pressure expansion capsule 3, sliding device 4, outer high-pressure expansion capsule water inlet 5, inner high-pressure expansion capsule water inlet 6 , the intermediate connecting steel pipe 7, the outlet hole of the cracking tube 8, the overpressure protection device 9, the hydraulic quick connector 10, the outer metal...
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Abstract
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