Check patentability & draft patents in minutes with Patsnap Eureka AI!

A construction method for pre-reinforcement of excavated caverns by using deep soft rock to form cavities

A construction method and pre-reinforcement technology, which is applied in earth drilling, underground chambers, shaft equipment, etc., can solve the problems of not making good use of soft rock in the mountain, achieve obvious support effects, realize automatic control, and take a long time Effect

Active Publication Date: 2020-09-15
重庆城投曙光湖建设有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main treatment method is to realize the initial support through anchor rods, steel frames and shotcrete, which does not make good use of the characteristics of the soft rock inside the mountain

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
  • A construction method for pre-reinforcement of excavated caverns by using deep soft rock to form cavities
  • A construction method for pre-reinforcement of excavated caverns by using deep soft rock to form cavities
  • A construction method for pre-reinforcement of excavated caverns by using deep soft rock to form cavities

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as Figure 1-Figure 4 As shown, a construction method for excavating cavern pre-reinforcement by using deep soft rock to form a cavity, the method includes the following steps:

[0039] Step 1: Utilize the sonic detector to detect the distribution of rock formations around the tunnel 2, analyze the rock formations of the tunnel 2, and find out the distribution of the soft rock formation 4 in the surrounding rock 1 of the rock formation;

[0040] Step 2: Excavate the tunnel 2, drill holes along the wall of the tunnel 2, and complete the initial lining 3;

[0041] Step 3: Under the condition of ensuring the stability of the tunnel, use the drilling equipment to avoid the anchor rod to drill the part of the top of the tunnel 2 under greater stress to form a hole 12 to reach the middle part of the soft rock layer 4 and clean up the gravel in the hole 12;

[0042] Step 4: Arranging a pressure monitor 10 around the drilled hole 12 that can monitor the stress of the surr...

Embodiment 2

[0060] The structure of the automatic pressure relief valve 11 used in the above-mentioned embodiment is as follows:

[0061] Such as Figure 5 As shown, an automatic pressure relief valve 11 includes a valve body 17 with an open upper end surface and a lower end surface, a valve ball 18 is installed at the opening of the lower end surface inside the valve body 17, and a threshold value is installed at the opening of the upper end surface inside the valve body 17. Adjusting device, the valve ball 18 is connected with the threshold adjusting device by a pressure spring 19; the threshold adjusting device includes an adjusting screw 8 threadedly connected to the inner wall of the valve body 17, and the adjusting screw 8 is provided with a pressure scale 27 with a rotating handle 25; The valve body 17 is provided with a pressure relief inlet hole 22 on the side wall at one end of the valve ball 18, and a pressure relief outlet hole 23 is provided on the middle side wall of the val...

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

An excavated hole pre-reinforcement construction method utilizing a cavity formed by deep soft rock comprises the following steps of firstly, finding out the distribution condition of a soft rock stratum; secondly, conducting primary lining; thirdly, drilling a hole; fourthly, arranging a pressure monitor; fifthly, enabling the open end of a moving plug body to penetrate through the hole to be inserted into soft rock of the soft rock stratum and inserting a long guide pipe into the moving plug body; sixthly, preparing an expanding agent solution; seventhly, filling the expanding agent solutioninto the soft rock in the soft rock stratum; eighthly, utilizing expansion force generated by the expansion solution to conduct squeezing pre-splitting on surrounding rock of the soft rock stratum; ninthly, installing an automatic pressure relief valve at an opening of the hole; tenthly, discharging flowing mother rock fragments of a small-particle cushion layer from the automatic pressure reliefvalve; eleventhly, conducting high-pressure grouting so as to complete pre-reinforcement of the excavated hole. By the adoption of the excavated hole pre-reinforcement construction method by utilizing the cavity formed by the deep soft rock, effective support is conducted on a tunnel, and the stability and safety of the tunnel are greatly improved.

Description

technical field [0001] The invention relates to the technical field of disturbance treatment of soft rock inside a tunnel mountain, in particular to a construction method for pre-reinforcing excavated caverns by using deep soft rock to form cavities. Background technique [0002] Huge high ground stress is one of the factors that cause risks to tunnel engineering, especially the uneven distribution of soft rock inside the mountain brings many unstable factors to the project. At present, the main treatment method is to realize the initial support through anchor rods, steel frames and shotcrete, which does not make good use of the characteristics of the soft rock inside the mountain. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a construction method for excavating cavern pre-reinforcement by using deep soft rock to form a cavity, using the soft rock existing in the tunnel mountain itself, and forming a cushion a...

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): E21D11/10
CPCE21D11/10
Inventor 刘杰高素芳周文俊卢获郑斯源黎照孙涛谢晓康唐洪宇李洪亚
Owner 重庆城投曙光湖建设有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com