Accurate grouting and water plugging method suitable for silty-fine sand and silty-clay stratums

A technology of silt and fine sand and grouting, which is used in earth-moving drilling, underground chambers, functional valve types, etc. Guaranteed accuracy and improved grouting efficiency

Pending Publication Date: 2022-07-12
BEIJING NO 4 MUNICIPAL CONSTR ENG +1
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the existing fixed-point grouting method has a large pressure loss of the grouting fluid, the grouting channel is easily blocked, and the grouting efficiency is low

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
  • Accurate grouting and water plugging method suitable for silty-fine sand and silty-clay stratums
  • Accurate grouting and water plugging method suitable for silty-fine sand and silty-clay stratums
  • Accurate grouting and water plugging method suitable for silty-fine sand and silty-clay stratums

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] A precise grouting water plugging method suitable for silty fine sand and silty clay strata, comprising the following steps:

[0038] After drilling to the design depth, withdraw the drill rod.

[0039] Install the grouting pipe 1 into the drilled hole.

[0040]Multiple groups of slurry holes are arranged along the circumference of the pipe wall at different heights of the grouting pipe 1. According to the different heights and positions of the grouting holes, the grouting process is divided into different engineering sections. The part corresponding to the bottom grouting hole is the first section. The engineering section is numbered from bottom to top. The part corresponding to the grouting hole on the uppermost side is the Nth engineering section. N is a positive integer, and N ≥ 3. The value of N is selected according to the actual needs of th...

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

A precise grouting and water plugging method suitable for silty-fine sand and silty-clay stratums comprises the following steps that after a hole is drilled to the designed depth, a drilling rod is withdrawn; the grouting pipe (1) is arranged in the drill hole; a plurality of sets of slurry holes are formed in the positions, at different heights, of the grouting pipe (1) in the circumferential direction of the pipe wall, the grouting process is divided into different engineering sections according to the difference of the height positions of the grouting holes, the part corresponding to the lowest grouting hole is the first engineering section, the grouting holes are sequentially numbered from bottom to top, the part corresponding to the uppermost grouting hole is the Nth engineering section, and N is a positive integer and is larger than or equal to 3; and the grouting construction of the first engineering section to the Nth engineering section is sequentially completed from bottom to top in the grouting process. According to the precise grouting and water plugging method, the slurry pressure loss is small, the grouting channel is not prone to being blocked, and the grouting efficiency is high.

Description

technical field [0001] The invention belongs to the field of foundation reinforcement, in particular to a precise grouting water blocking method suitable for silty fine sand and silty clay strata. Background technique [0002] With the rapid development of China's economy, rail transit projects have become an important project in domestic development. Among them, underground engineering construction, especially tunnel construction, faces many problems with high risk and high technology. For silty sand and silty clay strata, when the geological conditions and surrounding construction environment are complex, the realization of precise grouting and water plugging has become an urgent engineering problem to be solved. [0003] The utility model patent with publication number CN207315407 U (announcement date is May 4, 2018) discloses a fixed-point grouting device. The fixed-point grouting device includes an outer pipe, an inner pipe is arranged in the outer pipe, the outer dia...

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 Applications(China)
IPC IPC(8): E21D11/10E21D11/38F16K15/14
CPCE21D11/105E21D11/38F16K15/14
Inventor 孔恒史磊磊彭明玉王海涛梁爽王航飞崔少龙
Owner BEIJING NO 4 MUNICIPAL CONSTR ENG
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