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

Surrounding rock pressure-frost heaving force monitoring system and installation method of tunnel in cold region

A technology of surrounding rock pressure and tunnels in cold regions, which is applied to mining equipment, earthwork drilling, mining equipment, etc., can solve problems such as ignorance and difficulty of instrument technicians, and difficulty in on-site testing, so as to avoid the influence of human factors , The data processing is concise and clear, and the test data is comprehensive and rich

Inactive Publication Date: 2017-01-04
CHANGAN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the code does not give specific calculation methods and formulas for tunnels in cold regions, indicating that the frost heaving force is affected by various factors, and it is difficult to obtain its theoretical calculation value, which brings great difficulties to the practical application of the project.
At present, the research on the frost heaving force value of tunnels in cold regions is limited to theoretical semi-empirical calculations. Some scholars have proposed many empirical formulas, but these semi-empirical calculation formulas have very limited application, too many control conditions, and the accuracy of calculation results is also low. It is debatable; some scholars have carried out some on-site testing work, but the instruments and testing methods used are not systematic, and the testing work usually requires the cooperation of technical personnel from the instrument manufacturer. This has caused a considerable disconnect, making it often difficult to carry out on-site tests, and the test results are not satisfactory even after the tests are completed. In addition, the current on-site tests are carried out by burying earth pressure cells to obtain surrounding rock and The contact pressure between the primary branch, the primary branch and the secondary lining is regarded as the frost heaving force of the tunnel in the cold region, but the fact is that when the frozen circle exists, the frost heaving force and the surrounding rock pressure act together on the primary branch and the secondary lining. Two linings, the two are mixed together and it is difficult to distinguish, therefore, the accuracy of the test results obtained is also greatly reduced
Generally speaking, there is currently no test system for surrounding rock pressure-frost heaving force of tunnels in cold regions. The construction and operation of a large number of tunnels in cold regions makes it a challenge to invent a test system for surrounding rock pressure and frost heaving force of tunnels in cold regions. Problems to be solved

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
  • Surrounding rock pressure-frost heaving force monitoring system and installation method of tunnel in cold region
  • Surrounding rock pressure-frost heaving force monitoring system and installation method of tunnel in cold region
  • Surrounding rock pressure-frost heaving force monitoring system and installation method of tunnel in cold region

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0053] Step 1: Six measuring points are designed for the tunnel, which are numbered 1-6 from the vault down. According to the number of measuring points, the number of earth pressure cells 4 to be used is twelve, steel bar meter 6, and thermometer 9. Its numbers are Y1-Y12, G1-G6, W1-W6 for standby;

[0054] Step 2: Excavate the tunnel to the design contour line, excavate the space suitable for the earth pressure box 4 of the first layer at the position of the design measuring point on the surrounding rock 1, and then use the cross bracket 8 to place the earth pressure box 4 according to the corresponding number 1- 6 fixed so that it is in close contact;

[0055] Step 3: Bind the thermometer 9 with the same number on the cross bracket 8 at the same measuring point, and after the six measuring points are installed in sequence, use the method of pre-sprayed concrete to further fix;

[0056] Step 4: Carry out the erection work of the steel arch 3. After the erection of the steel...

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 belongs to the technical field of tunnel monitoring, and in particular relates to a tunnel surrounding rock pressure-frost heaving force monitoring system in cold regions and an installation method thereof. The system of the present invention includes: several sensor modules arranged on the test sections for measuring real-time data; several data acquisition modules arranged on each test section for collecting sensor module data; data processing modules for collecting and processing The data collected by the data acquisition module; the central control module is used to control the working status of the data acquisition module and the data processing module; the data display module is used to display the data collected by the data acquisition module; the data acquisition module is connected with the sensor module and the data processing module respectively The modules are connected, and the data processing module is respectively connected with the central control module and the data display module. The monitoring system of the present invention has clear layers, each test section works in parallel, the damage of a certain test section will not affect the work of other test sections, and has high practicability; and the test data is complete and reliable, the data processing is simple and clear, and the data Strong continuity, easy to analyze.

Description

technical field [0001] The invention belongs to the technical field of tunnel monitoring, and in particular relates to a tunnel surrounding rock pressure-frost heave force monitoring system in a cold region and an installation method thereof. Background technique [0002] With the implementation of my country's western development strategy, more and more road tunnels have begun to be built. The western part of my country is dominated by plateau landforms with high altitude and low temperature. It is inevitable that many high-altitude cold air tunnels will be put into construction and operation. The main feature of tunnels in cold regions is the "freeze-thaw" cycle. With the change of seasonal temperature, the surrounding rock of the tunnel will be affected. In winter, the surrounding rock will be affected by the low temperature climate to produce a new frozen circle, and the surrounding rock has a great effect on the lining. In summer, when the temperature warms up, the frost ...

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): E21F17/18
CPCE21F17/18E21F17/185
Inventor 翁效林张玉伟谢永利李又云昝文博李盈灿王琪
Owner CHANGAN UNIV
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