An identification method of splitting grouting diffusion range of fractured rock mass based on microseismic monitoring
A technology for fractured rock mass and microseismic monitoring, applied in the field of fractured rock mass grouting engineering, can solve the problems of complex fracture network, difficulty in visual observation of slurry, lack of monitoring and identification of slurry diffusion and flow methods, etc., and achieves good grouting effect and accuracy. The effect of positioning
Active Publication Date: 2019-12-03
NORTHEASTERN UNIV LIAONING
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the fractured rock mass is deeply buried in the formation, and the fracture network is complex. The flow and diffusion of the grouting fluid in the fractures of the rock mass is extremely hidden, and it is extremely difficult to observe the diffusion and flow of the grout directly.
At present, in the actual field engineering, there is a lack of methods for monitoring and identifying the diffusion and flow of grout in fractured rock mass, and a method for visually displaying the shape and size of grout diffusion and the scope of influence
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0022] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0023] like figure 1 As shown, the method for identifying the diffusion range of grouting grout in the entire fractured rock mass is divided into two stages with the grouting process as the stage point: the pre-grouting process stage and the liquid injection process stage. Among them, the installation of the microseismic monitoring system in the identification method is in the first stage, during which the preparation, testing, and initial positioning of the microseismic are carried out; the specific implementation is in the second stage, as the slurry spreads, based on the microseismic monitoring The identification method of the diffusion range of the technology is run, and the data is stored and processed in real time.
[0024] like figure 2 , 3 , 4, a kind of identification method based on microseismic monitoring of cracked rock mass splitting grouting diffusi...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention belongs to the technical field of fissure rock mass grouting engineering and discloses a method for identifying the crack grouting diffusion range of fissure rock mass based on microseismic monitoring. During grouting, the grout flows and diffuses in the cracks of the rock mass as the grouting pressure is loaded. The diffusion stress acts on the inner wall of the cracks, causing damage to the cracked rock mass, causing energy release in the rock mass. Especially for high-pressure splitting grouting, the energy release is intensive. , microseismic events are obvious. The microseismic monitoring system is used to capture and identify energy release points and combined with test sampling to determine the quality of the events, so as to achieve real-time calibration of the slurry diffusion and influence range, which is beneficial to the implementation of grouting operations. The invention can determine the slurry diffusion and its influence range in the grouting project, and realize the safe, efficient and low-cost application of grouting technology in a wide range of fields.
Description
technical field [0001] The invention belongs to the technical field of fissure rock mass grouting engineering, and relates to a method for identifying the flow diffusion path of the grout and the splitting diffusion range during the grouting process of grouting in a fissure, and particularly relates to a fissure rock mass splitting based on microseismic monitoring Identification method of grouting diffusion range. Background technique [0002] Due to the existence of cracks in geological engineering, various properties of the original rock mass have been changed, including permeability, compressive strength, shear strength, and tensile strength. The basic method to enhance the strength of cracked rock mass and reduce the permeability of rock mass is The grout with a certain viscosity, fluidity, and solidification performance is injected into the fractured rock mass, that is, the grouting technology, and due to the non-penetration of the crack network in the rock mass, the in...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/28G01V1/30
CPCG01V1/288G01V1/30G01V2210/123G01V2210/1429
Inventor 李连崇牟文强程关文杨天鸿朱万成姚鲁建刘洪磊张鹏海
Owner NORTHEASTERN UNIV LIAONING