Composite anti-seepage wall and its construction method for environmental protection of landfill in soft soil area

A technology for environmental protection and landfills, applied in protection devices, infrastructure engineering, construction, etc., can solve the problems affecting the effect of bentonite, reducing the strength of plastic concrete and anti-seepage performance, so as to improve cohesion, stability, and safety effect

Active Publication Date: 2021-02-09
BEIJING GEOENVIRON ENG & TECH
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the plastic concrete in the above technologies encounters seawater erosion, especially the inorganic salts in seawater, which will affect the effect of bentonite and reduce the strength and anti-seepage performance of plastic concrete.

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
  • Composite anti-seepage wall and its construction method for environmental protection of landfill in soft soil area
  • Composite anti-seepage wall and its construction method for environmental protection of landfill in soft soil area
  • Composite anti-seepage wall and its construction method for environmental protection of landfill in soft soil area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] The composition of the plastic concrete provided by the present embodiment is as follows: on the basis of every cubic plastic concrete, 150kg cement (42.5 ordinary Portland cement), 40kg sodium bentonite (grain size meets 400 mesh sieves below 10%), 75kg clay (water-containing 513kg coarse sand (0.5~3mm), 513kg rice sand (3~5mm), 513kg melon seed slices (5~10mm), 0.6kg alcohol ether sulfuric acid Salt (fatty alcohol polyoxyethylene ether sodium sulfate), 0.1kg polyethylene glycol hydrophilic non-ionic fluorocarbon surfactant (wherein polyethylene glycol molecular weight is 1.8k, fluorocarbon is perfluoro(2-methyl-3 -Oxahexyl) fluoride), 0.5kg polypropylene glycol adduct of ethylene oxide (wherein the number of oxirane groups is 45), 0.0002kg nonionic polyacrylamide, 300kg water. The plastic concrete is prepared according to the preparation method of the present invention.

Embodiment 2

[0119] The composition of the plastic concrete provided by the present embodiment is as follows: in every cubic plastic concrete, with 160kg cement (42.5 ordinary Portland cement), 50kg nano-bentonite (model is the same as embodiment 1), 80kg clay (model is the same as embodiment 1) ), 487kg coarse sand (model is the same as embodiment 1), 487kg rice sand (the model is the same as embodiment 1), 487kg melon seed slices (the model is the same as embodiment 1), 0.7kg alcohol ether sulfate (the model is the same as embodiment 1), 0.4 kg polyethylene glycol hydrophilic nonionic fluorocarbon surfactant (model is the same as embodiment 1), the adduct (model is the same as embodiment 1) of the ethylene oxide of 0.7kg polypropylene glycol, 0.005kg nonionic poly Acrylamide, 320kg water. The plastic concrete is prepared according to the preparation method of the present invention.

Embodiment 3

[0121] The composition of the plastic concrete provided by the present embodiment is as follows: in every cubic plastic concrete, with 180kg cement (42.5 ordinary Portland cement), 60kg nano-bentonite (model is the same as embodiment 1), 90kg clay (model is the same as embodiment 1) ), 465kg coarse sand (model is the same as embodiment 1), 465kg rice sand (the model is the same as embodiment 1), 465kg melon seed slices (the model is the same as embodiment 1), 0.8kg alcohol ether sulfate (the model is the same as embodiment 1), 1kg Polyethylene glycol hydrophilic nonionic fluorocarbon surfactant (model is the same as embodiment 1), the adduct (model is the same as embodiment 1) of the ethylene oxide of 1kg polypropylene glycol, 0.01kg nonionic polyacrylamide , 330kg of water. The plastic concrete is prepared according to the preparation method of the present invention.

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 composite anti-seepage wall for environmental protection of landfills in soft soil areas and a construction method thereof. The composite anti-seepage wall includes a flexible core wall arranged around the landfill, and the flexible core wall The depth is sufficient to extend from the ground surface and embed into the water-resisting layer. The inner and outer sides of the flexible core wall are respectively provided with plastic walls, and the inner side of the inner plastic wall and the outer side of the outer plastic wall are respectively provided with supporting walls. A transition zone is set between the supporting wall on the inner side and the landfill, and a groundwater pumping and drainage well is set in the transition zone. According to certain procedures, the present invention constructs a support wall, vertically slots, vertically installs a flexible core wall, makes plastic concrete according to a specific ratio, and adopts an underwater pouring method to construct a plastic wall. Under the premise of stable embankment and foundation, it can effectively isolate the accidental leakage of hazardous waste landfill and protect soil and groundwater.

Description

technical field [0001] The invention relates to a composite anti-seepage wall used for environmental protection of landfills in soft soil areas and a construction method thereof. Background technique [0002] In the prior art, with the rapid development of social economy, urbanization and industrialization are accelerating, urban garbage and industrial waste are increasing sharply, and petrochemical and mining smelting processes are putting more and more pressure on the environment. In coastal soft soil areas, due to soft soil geological defects, high groundwater level and other factors, hazardous waste landfills built in the operation process, once leaked, will cause great harm to soil and groundwater, so it is necessary to build a vertical anti-seepage wall with HDPE membrane to strengthen the environment. Protect. Continuous vertical grooves in soft soil areas will affect the embankment and soil at the edge of the grooves, resulting in displacement and ground cracking. ...

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): E02D19/06E02D19/18E02D31/00
CPCE02D19/06E02D19/18E02D31/00
Inventor 郑中华齐长青刘勇甄胜利刘力奇郭智丁仕文盖益民翟文华霍成立金晶田坤罗彬
Owner BEIJING GEOENVIRON ENG & TECH
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