A cup-shaped pre-grouting reinforcement method for full-section curtain grouting

A curtain grouting and pre-grouting technology, which is applied in earthwork drilling, shaft equipment, wellbore lining, etc., can solve the problems of complex construction technology, long construction period, and water gushing plugging legacy, and achieve obvious construction period benefits

Inactive Publication Date: 2020-09-18
CHINA FIRST HIGHWAY ENG CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This method has high technical requirements, complex construction technology, long construction period and high cost. If there is a slight carelessness in the implementation and treatment, it will cause legacy problems for water gushing plugging, and even cause secondary plugging and rework. Therefore, a The new cup-shaped grouting scheme replaces the curtain grouting scheme, which reduces the cost of grouting and shortens the construction period

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 cup-shaped pre-grouting reinforcement method for full-section curtain grouting
  • A cup-shaped pre-grouting reinforcement method for full-section curtain grouting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0076] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0077] see Figure 1-Figure 2 , a cup-shaped pre-grouting reinforcement method for full-section curtain grouting, which improves full-section curtain grouting and adopts the concept of cup-shaped pre-grouting reinforcement, that is, through the peripheral curtain 2 (including the arch tube curtain 3) and the central hole hole The water-stop rock plate 4 (the bottom of the cup) formed by bottom grouting forms a cup-shaped three-dimensional water-stop reinforcement ring to solve the two problems of water-stop and collapse prevention for water-rich faults.

[0078] Before entering the fault, a 10m slug-stop rock plate is reserved. The 120° range of the arch is made of advanced pipe shed grouting to form the pipe curtain, and the rest of the surrounding holes are grouted with segmented and backward deep holes to form 360° w...

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 discloses a cup-type pre-grouting reinforcing method for full-section curtain grouting. Through water-stop laccolith, namely the cup bottom formed by a surrounding curtain and the centerhole bottom which are grouted, the surrounding curtain comprises an arch part pipe curtain, a cup-type three-dimensional water-stop reinforcing ring is constituted, 10 m of grout-stop laccolith is reserved before entering a fault, an arch part is subjected to advanced pipe shed grouting within the range of 120 degrees to form the pipe curtain, and remaining surrounding holes are subjected to sectional retreating-type deep hole grouting to form a water-stop reinforcing curtain with the periphery of the contour line being excavated by 360 degrees. Cup-type pre-grouting construction of the method has three cycles; the consumed time of cup-type grouting of each cycle is reduced compared with the full-section curtain grouting time, and the construction period benefits are obvious; cup-type grouting and curtain grouting schemes both meet the requirements of safety and feasibility, but the cost and the construction period of curtain grouting are both not accepted, and cup-type grouting has the obvious advantages; and thus, the cup-type pre-grouting reinforcing method for full-section curtain grouting has the more obvious construction period benefits.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a cup-shaped pre-grouting reinforcement method for full-section curtain grouting. Background technique [0002] At present, during tunnel construction, the principle of "mainly drainage" is adopted for groundwater discharge; for tunnels passing through karst and fractured zones, where the groundwater is expected to be relatively large and the ecological environment is affected by drainage, the principle of "mainly blocking" is usually adopted. Based on the principle of "limited discharge" to achieve the purpose of effective water gambling, reliable waterproof, environmental protection, and economical rationality. [0003] Full-section curtain grouting is to distribute holes on the entire section, and form a water-cutting curtain through grouting to block groundwater infiltration, enhance the self-stabilization ability of the ground, and strengthen the surrounding rock...

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): E21D11/10E21D11/38E21D9/00
CPCE21D9/001E21D11/10E21D11/38
Inventor 薛君薛春瑞李尊武尹鹏飞王贺起陈鹏高刘博文
Owner CHINA FIRST HIGHWAY ENG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap