Grouting reinforcement effect three-dimensional spatial data acquisition method for weak broken rock body

Abstract

The invention discloses a grouting reinforcement effect three-dimensional spatial data acquisition method for a weak broken rock body. The grouting reinforcement effect three-dimensional spatial data acquisition method for the weak broken rock body comprises the following steps that (1) a multi-order high-recognition-degree grouting model test is implemented; (2) the arrangement of measuring lines is observed and the exposure of a profile is measured; (3) the characteristics of slurry gel are measured and recorded, and an indoor experimental sample is obtained; (4) the three-dimensional distribution pattern of the characteristics of a reinforcing body is described; (5) an indoor soil mechanics test and an indoor hydraulics test are implemented; and (6) the grout diffusion mechanism and the grout reinforcement mode are analyzed. The grouting reinforcement mode can be of a single type such as a compaction type, a permeation type and a fracture type or be of a combined type such as a compaction-fracture type and a permeation-fracture type. A quantitative research method for checking the grouting effect and determining the three-dimensional spatial data of the reinforcing body in the grouting model test is provided for the first time, and the problem that information is excessively lost and cannot be mined comprehensively in the grouting test is solved.

Description

technical field [0001] The invention relates to a rock soil test data acquisition technology, in particular to a three-dimensional space data acquisition method for grouting reinforcement efficiency of weak and broken rock mass in indoor grouting tests. Background technique [0002] In the construction of underground projects such as mines and tunnels, problems such as large deformation of surrounding rocks and large amounts of water inflow often occur, and even water and mud inrush disasters may occur, causing huge loss of personnel and property. Grouting, as an effective means of strengthening weak surrounding rock and controlling water damage, has been more and more widely used in underground engineering disaster control. At present, in addition to the data monitoring of soil pressure, seepage pressure and displacement, there are two ways to test the grouting effect in the data extraction of the grouting test. One is to fill the mixed grouting reinforcement into a small m...

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Problems solved by technology

At present, in addition to the data monitoring of soil pressure, seepage pressure and displacement, there are two ways to test the grouting effect in the data extraction of the grouting test. One is to fill the mixed grouting reinforcement into a small mold before curing, and test the mechanical strength. and hydraulic parameters, the disadvantage of this method is that it cannot reflect the anisotropy of slurry diffusion, nor can it obtain information on the diffusion law of split slurry veins; Location sampling to test mechanical and hydraulic parameters, or simple excavation to observe the shape of slurry veins, it is difficult to take into account the inspection of grouting effect and the identification of the spatial shape of slurry veins, resulting in a large loss of valid data from grouting model tests

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