Hollow inclusion stressometer with visual guiding and positioning function and use method

Abstract

The invention discloses a hollow inclusion stressometer with a visual guiding and positioning function and a use method. The stressometer comprises a guiding head, an epoxy resin cylinder, a piston cylinder and a tail plug, wherein the top of the guiding head is provided with a high-definition camera with an LED illuminating lamp, and the axis of the rear part of the guiding head is provided with a glue guide blind hole; a plurality of radial glue outlet holes communicated with the glue guide blind hole are formed in the outer circumference of the guiding head; and a connector, the piston cylinder and the tail plug are sequentially arranged on the rear portion of the epoxy resin cylinder. According to the test requirement, large and small holes are drilled in a rock stratum, glue is injected into the piston bore, a piston is placed and the tail plug is screwed; air is inflated inwards through the air guide pipe, and in the process of slowly entering a small drill hole, the fracture development condition of the inner wall of the small drill hole is observed through the high-definition camera at the front part of the guiding head, so that the position of an orifice of the small drill hole can be clearly seen, whether the hollow inclusion is mounted in place or not can be clearly seen, and the integrity of the wall of the drill hole can be clearly seen; and the stressometeris particularly suitable for measuring three-dimensional crustal stress in the rock stratum, and a basis is provided for mining roadway reserving and supporting.

Description

technical field [0001] The invention belongs to the technical field of geostress detection, and in particular relates to a hollow inclusion with the function of visual guidance and positioning. Background technique [0002] Hollow inclusion stress gauge method is recommended by the International Society of Rock Mechanics (ISRM) for measuring in-situ stress. However, in the actual testing process of in-situ stress, the following difficulties will be encountered: (1) the hollow inclusion stress gauge cannot be accurately guided, and it is difficult to send it into the small borehole; (2) it is difficult to judge the integrity of the rock formation on the inner wall of the small borehole around the stress gauge (3) Whether the feeding position of the hollow inclusion stress gauge is accurate. Therefore, it is of great significance to develop a hollow inclusion stress gauge with the function of visual guidance and positioning to improve the success rate of hollow inclusion stre...

AI Technical Summary

Problems solved by technology

However, in the actual testing process of in-situ stress, the following difficulties will be encountered: (1) the hollow inclusion stress gauge cannot be accurately guided, and it is difficult to send it into the small borehole; (2) it is difficult to judge the integrity of the rock formation on the inner wall of the small borehole around the stress gauge (3) Whether the feeding position of the hollow inclusion stress gauge is accurate

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