Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Underground construction advanced detection method and system based on resistivity of multiple same source electrode arrays

An underground engineering and electrode array technology, which is applied in radio wave measurement system, electrical/magnetic exploration, geophysical measurement, etc., can solve problems such as low resolution, sensitive response, interference, etc., and achieve improved spatial resolution, sensitive The effect of improving the performance and increasing the detection distance

Active Publication Date: 2015-01-07
山东百廿慧通工程科技有限公司
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This method mainly faces the following problems: ①Since the measurement electrode MN moves behind the tunnel face, it is easily disturbed by abnormal objects behind the tunnel face; ②Due to the special environment of the tunnel, the detection mode of the tunnel three-pole method is perpendicular to the Abnormal body, resulting in sensitive response to abnormal body near the face, relatively insensitive to remote abnormal body response, and power supply and reception belong to one-dimensional detection mode, the resolution is not high

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Underground construction advanced detection method and system based on resistivity of multiple same source electrode arrays
  • Underground construction advanced detection method and system based on resistivity of multiple same source electrode arrays
  • Underground construction advanced detection method and system based on resistivity of multiple same source electrode arrays

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Taking a tunnel as an example, the tunnel section is arched, with a span of 12m and a height of 8m. There is water gushing near the mileage ZK97+853, and there may be water-bearing structures in front of it. In order to identify the unfavorable geological conditions ahead and provide guarantee for the smooth progress of construction, the use of multiple The resistivity method of the same-sex source electrode array for advanced detection. The specific working method is as figure 2 shown:

[0043] (1) Arrange 3 parallel measuring lines L on the tunnel face 1 , L 2 and L 3 , respectively arranged at a height of 3m, 6m and 9m from the bottom plate, and the number of measuring electrodes M on each measuring line is 13, forming an array measuring electrode system;

[0044] (2) Four power supply electrodes A are evenly arranged on the periphery of the array measuring electrode system along the contour line of the face, and then four measurement lines are respectively arra...

Embodiment 2

[0051] Taking a tunnel as an example, the tunnel section is arched, with a span of 12m and a height of 8m. There is water gushing near the mileage ZK97+853. Repeat steps (1) to (5) of the test example. The three-dimensional imaging results of this detection are as follows. Figure 4 As shown in the figure, the water-rich surrounding rock is relatively strong in the section ZK97+871~ZK97+875.

Embodiment 3

[0053] Taking a tunnel as an example, the tunnel section is arched, with a span of 12m and a height of 8m. There is water gushing near the mileage ZK97+853. Repeat steps (1) to (5) of the test example. The three-dimensional imaging results of this detection are as follows. Figure 5 As shown in the figure, the water-rich surrounding rock is relatively strong in the section of ZK97+874~ZK97+875.

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

No PUM Login to View More

Abstract

The invention relates to an underground construction advanced detection method and system based on resistivity of multiple same source electrode arrays. The underground construction advanced detection method and system is suitable for detection of unfavorable geology in a borehole-blasting method of underground construction including tunnels or underground tunnels or the construction process of a tunnel boring machine (TBM). The underground construction advanced detection method comprises the steps of (1) constructing an array type measurement electrode system on a working surface; (2) forming a power supply electrode system on a side wall, and arranging the other power supply electrode B and measurement electrodes N to the position far away behind the working surface; (3) providing positive and negative current through a power supply electrode A positioned on the working surface and the power supply electrode B positioned far away behind the working surface, utilizing each of measurement electrodes M in the array type measurement electrode system to measure electric potential respectively, and obtaining the electric potential difference of the measurement electrodes M and the measurement electrodes N in the working surface and fracture surfaces, wherein the step is repeated continuously until the power supply electrode system moves to the preset position, and the detection is completed; (4) performing inversion on the measured electric potential difference data by adopting least square linear inversion iteration process based on smooth constraint to obtain three-dimensional resistivity images of a geologic body in front of the working surface.

Description

technical field [0001] The invention relates to a drilling and blasting method for underground engineering such as tunnels or tunnels or a detection method for unfavorable geology during TBM construction, in particular to an advanced detection method and system for underground engineering based on the resistivity of polyhomogeneous source electrode arrays. Background technique [0002] As the construction focus of water conservancy and hydropower projects and transportation projects gradually shifts to the western mountainous areas and karst areas with extremely complex topographic and geological conditions, the engineering geological conditions encountered are extremely complex, and many high-risk geological conditions such as water inrush and mud inrush are faced during construction. disaster. Water inrush disasters have brought major disasters and loss of life and property to construction safety, and pre-discovering the source of geological disasters in front of the tunne...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/06
Inventor 刘斌李术才聂利超杨为民王传武田明禛陈磊宋杰刘征宇李树忱王世睿李尧
Owner 山东百廿慧通工程科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com