Gas lifting reverse circulation porus cleaning construction method for slurry bulkhead cast-in-situ bored pile

A technology of gas-lift reverse circulation and bored piles, which is applied in the direction of sheet pile walls, cleaning equipment, earth square drilling and mining, etc., can solve the problems that the sediment cannot be cleaned and the bearing capacity of the pile is reduced, so as to save land and water resources, Emission reduction and easy installation and operation

Inactive Publication Date: 2008-01-23
HEBEI CONSTR & INVESTIGATION RES INST
View PDF0 Cites 35 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to aim at the defects existing in the existing slag removal method, and to provide a construction method of using air-lift reverse circulation to clear the ho...

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
  • Gas lifting reverse circulation porus cleaning construction method for slurry bulkhead cast-in-situ bored pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0031] Be 1000mm with diameter, pile length 40m pile is example, utilize its construction sequence of the present invention to be: 1, measure and place pile position; 2, drilling rig is in place; 3, bury hole casing; 6. Set up a steel conduit (including the top section of the conduit); 7. Place an air compressor; 8. Set up a high-pressure hose; 9. Connect the high-pressure hose to the air compressor; Circular cleaning of holes; 11. Pouring concrete into piles. The specific implementation process is detailed as follows:

[0032] After measuring and determining the position of the pile, the drilling rig began to be in place, and the casing in the hole was buried, and the construction was ready to start. Use the Φ1000mm drill bit to drill the hole. When the groundwater level is high, or the formation is prone to collapse, a high-quality stabilizing solution should be prepared in advance, specifically made of bentonite, caustic soda and cellulose, with a specific gravity of not ...

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 construction method using gas-lift back-circulation hole cleaning for cast piles by drilling in slurry dado, which comprises the following procedures: (1) setting steel guide tube in the rebar cage depending upon the diameter of the pile; (2) installing special guide-pipe epimerite with an inserting port for hi-pressure rubber tube at top of the steel tube; (3) measuring the specific weight of the slurry in the hole, determining the length of the hi-pressure rubber tube to be inserted into the steel guide tube depending upon the specific weight of the slurry; (4) inserting into the steel guide tube the hi-pressure rubber tube having capillary holes at its bottom; (5) connecting the hi-pressure rubber tube with an air compressor; (6) turning on the air compressor to clear out dregs by gas-lift back circulation. The invention is furnished with rapid dreg-clearing speed, clean and through dreg clearing; comparing with prior process, the invention can improve 3-5 times dreg-clearing speed; the invention guarantees the quality of pipe foundation, is free from slurry pollution and good for environmental protection; and can save water and land. The hole-clearing device and equipment used are easy to install and operate, are practical, the materials are readily available, the price is low and the process is convenient.

Description

technical field [0001] The invention relates to a construction method for a building foundation, in particular to a construction method for clearing holes of bored piles with mud retaining walls by using gas-lift reverse circulation, and belongs to the technology for removing sediment at the bottom of holes during pile foundation construction in the field of engineering construction. Background technique [0002] Pile foundation is a commonly used foundation form in the field of construction, and bored piles occupy a dominant position in the application of pile foundations due to their unique advantages. However, no matter whether the designed pile type is a friction pile or an end-bearing pile, the requirements for the thickness of the sediment at the bottom of the hole before concrete pouring are relatively strict, because the thickness of the sediment at the bottom of the hole directly affects the bearing capacity of the pile. In engineering practice, there are many examp...

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
IPC IPC(8): E02D5/34E21B37/04
Inventor 商卫东胡建敏王英辉王国辉张春来李友东
Owner HEBEI CONSTR & INVESTIGATION RES INST
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