Identification method for detecting grouting diffusion range based on proton magnetometer

Abstract

The invention discloses an identification method for detecting a grouting diffusion range based on a proton magnetometer, which is suitable for underground engineering construction. In the grouting stage, firstly, superfine iron powder is added into slurry to be mixed and stirred, so that the superfine iron powder is evenly distributed in the slurry, and then the slurry mixed with the superfine iron powder is magnetized and then injected into a surrounding rock body through a permanent magnetic field formed in a magnetizing device; in the detection stage, metal detectors are arranged on the top and two sides of a roadway, a proton magnetometer is connected, and the proton magnetometer is used for observing the distribution condition of different magnetic fields in the surrounding rock body, so that the diffusion range of the slurry in the surrounding rock body is determined. The method has the advantages of being convenient to operate, economical, applicable, safe, rapid, three-dimensional and visual.

Description

technical field [0001] The invention relates to an identification method for detecting the grouting diffusion range based on a proton magnetometer, and is especially suitable for use in underground engineering. Background technique [0002] In recent years, my country's underground engineering has developed vigorously, and the construction scale of subway tunnels and coal mine lanes has continued to expand. In the construction of underground engineering, there are a large number of cracks in the surrounding rock. The existence and activity of these cracks will profoundly affect the tensile strength, compressive strength and shear strength of the underground rock mass, and reduce the impact of tunnels, chambers, etc. The integrity and stability of the surrounding rock of the project increases the complexity of the rock mass environment, which not only brings great difficulties to the underground construction work, but also affects the safety, stability and durability of the u...

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: Aiming at the problems existing in the existing method for detecting the diffusion range of grout, the present invention provides an identification method for detecting the diffusion range of grouting based on a proton magnetometer, which uses a magnetizer to magnetize the slurry and a proton magnetometer to detect the distribution of the magnetic field in the surrounding rock The identification of the grout diffusion range in the surrounding rock can solve the problem that the grout diffusion inside the surrounding rock cannot be detected, and achieve the purpose of effectively supporting the surrounding rock through the grouting process

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