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Rock mass grouting diffusion range monitoring method and device

A range and grouting technology, applied in the field of monitoring the range of grouting diffusion in rock mass, can solve the problems of inability to realize grouting technology and theoretically safe, efficient, low-cost application, inability to diffuse and determine the scope of influence, etc. Achieve the effect of expanding the detection range and improving the accuracy

Pending Publication Date: 2021-05-14
中煤能源研究院有限责任公司 +1
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Problems solved by technology

In the prior art, it is not possible to determine the grout diffusion and its influence range in similar model experiments, and it is not possible to realize the safe, efficient and low-cost application of grouting technology and theory in a wide range of fields

Method used

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  • Rock mass grouting diffusion range monitoring method and device
  • Rock mass grouting diffusion range monitoring method and device
  • Rock mass grouting diffusion range monitoring method and device

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Embodiment Construction

[0038] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] figure 1 It is a schematic flow chart of a method for monitoring the diffusion range of rock mass grouting shown in an embodiment of the present disclosure, as shown in figure 1 As shown, the method includes:

[0040] In step 101, measuring lines are arranged along the lateral and vertical symmetry axes of the center of the rock mass, and the measuring points are respectively numbered to determine the positions of excitation points and vibration pickup points.

[0041] Exemplarily, figure 2 is based on ...

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Abstract

The invention relates to a rock mass grouting diffusion range monitoring method and device, and the method comprises the steps: arranging measuring lines along the transverse and vertical symmetry axes of the center of a rock mass, numbering measuring points, and determining the positions of excitation points and vibration pickup points; arranging an acceleration sensor at the excitation point; connecting one end of a data connecting line with the acceleration sensor, connecting the other end of the data connecting line to a data acquisition instrument, connecting the data acquisition instrument with a terminal, and transmitting obtained real-time data to the terminal; arranging a force sensor provided with a hammer head and used for measuring the exciting force; carrying out a preset number of hammering tests at each excitation point position, and calculating the fractal box dimension of acceleration response according to the selected preset number of groups of data; and comparing the difference of the dimensions of the acceleration response fractal boxes among different measuring points, and monitoring the size and range of the rock mass crack by a hammering method, so as to determine the grouting diffusion range of the rock mass according to the size and range of the rock mass crack. The determination of slurry diffusion and the influence range thereof in the similar model experiment can be realized.

Description

technical field [0001] The invention relates to the technical field of fissure rock mass grouting tests, in particular to a method and device for monitoring the diffusion range of rock mass grouting. Background technique [0002] In the process of coal mining, gobs will be formed, leading to the collapse of the overlying rock strata and surface subsidence. In order to prevent the existence of cracks in geological engineering, various properties of the original rock mass, including permeability, compressive strength, and shear resistance, have been changed. strength, tensile strength, and to enhance the strength of the fractured rock mass and reduce the permeability of the rock mass, the basic method adopted is to use the grout with constant viscosity, fluidity and solidification performance to inject the grouting technology into the fractured rock mass, and because Due to the non-permeability of the fracture network in the rock mass, the grout infiltration effect is poor und...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/00G01N15/08
CPCG01N15/00G01N15/0806G01N15/08G01N2015/0034G01N2015/0846
Inventor 郑忠友朱磊柴敬古文哲欧阳一博潘浩刘治成宋天奇秋丰岐
Owner 中煤能源研究院有限责任公司
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