Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for treating and preventing saline soil in an airport runway

A saline soil and airport technology, applied in soil protection, construction, infrastructure engineering, etc., can solve the problems of the decline of saline soil prevention and control, increase the construction period and cost, and poor structural stability, so as to improve the overall structure Stability, enhance long-term stability, improve the effect of waterproof effect

Active Publication Date: 2020-05-19
SICHUAN ROAD FIELD ENG CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the treatment methods used in the prior art include filling method, chemical treatment method, isolation layer method, groundwater table lowering method, etc. The filling method and chemical treatment method will increase the construction period and cost of the construction project, and the groundwater level method is difficult to maintain in a long-term Effective, the construction method of the partition layer method is relatively simple, but it is highly dependent on the laid geomembrane, and the stability of the structure is relatively poor. After the geomembrane is damaged, the control effect on saline soil will decrease

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This embodiment relates to a method for treating and preventing saline soil in grassroots fields, including the following steps.

[0034] Step 1: Combining the engineering geological conditions and the overlying load for optimal inhibition of salt expansion, select the removal depth of saline soil to be 1m, and after removing the saline soil, roll and level the original ground to a degree of compaction of 93%.

[0035] Step 2: Lay the waterproof and cured layer on the original ground first, and then lay the composite geomembrane on the waterproof and cured layer, and the composite geomembrane and the waterproof and cured layer are evenly matched. The composite geomembrane includes a boundary membrane and a central membrane. The boundary membrane is laid first, and it is laid at the junction of the preset adjacent central membranes, and then the central membrane is laid along the boundary membrane so that the boundary of the central membrane overlaps the boundary membran...

Embodiment 2

[0041] The difference between the present embodiment and the first embodiment mainly lies in: the depth of removal of the saline soil in step one of the present embodiment is 1.2m; the thickness of the natural sand and gravel cushion is 70cm in the step three; the thickness of the second graded sand and gravel cushion is 35cm ; The thickness of the first gradation sand and gravel cushion is 20cm; in step 4, the width of one side of the composite geomembrane on the top of the sand and gravel cushion is 12m.

[0042] The materials used in the waterproof solidified layer laid in this embodiment are prepared according to the following method:

[0043] Mix and stir 54kg of sodium silicate and 96kg of mica powder at a stirring speed of 180r / min, add 45kg of vitrified microbeads after stirring for 20min, adjust the stirring speed to 100r / min, add 93kg of water after stirring evenly, and continue stirring for 30min to obtain Semi-finished material; before laying, add 12kg of calcium c...

Embodiment 3

[0045] The difference between the present embodiment and the first embodiment mainly lies in: the depth of removal of the saline soil in step one of the present embodiment is 1.5m; the thickness of the natural sand and gravel cushion is 70cm in the step three; the thickness of the second graded sand and gravel cushion is 25cm ; The thickness of the first gradation sand and gravel cushion is 30cm; in step 4, the width of one side of the composite geomembrane on the top of the sand and gravel cushion is 13m. A geogrid is laid between the natural sandy gravel cushion and the second graded sandy gravel cushion, and the geogrid is spliced ​​longitudinally with a lap width of 40cm.

[0046] The materials used in the waterproof solidified layer laid in this embodiment are prepared according to the following method:

[0047] Mix and stir 110kg sodium silicate and 110kg mica powder at a stirring speed of 170r / min, add 100kg of vitrified microbeads after stirring for 25min, adjust the s...

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 relates to a treatment and prevention method of saline soil on an airport runway, in particular to the technical field of airport runway construction. According to the technical scheme,the treatment and prevention method comprises the steps that the removal depth of saline soil is selected according to engineering geological conditions firstly, and original ground is rolled and leveled after the saline soil is removed; a waterproof curing layer is laid on the original ground and a composite geomembrane is laid on the waterproof curing layer; sand gravel cushion is laid on the composite geomembraneto fill and compact in layers; the top edge of the sand gravel cushion is covered by the composite geomembrane. The treatment and prevention method of saline soil on the airport runway has the effects of stable structure and long-term stable prevention function, and is used for the treatment and prevention of saline soil on the airport runway.

Description

technical field [0001] The invention relates to the technical field of airport track construction, in particular to a treatment and prevention method for airport track saline soil. Background technique [0002] Saline soil is a general term for saline soil, alkaline soil and various salinized and alkaline soils. Among them, saline soil refers to the soil with soluble salt content in the soil that is significantly harmful to crop growth. Extensive exchangeable sodium in soil properties. Saline soil not only harms the plants growing on it, but also has engineering characteristics such as salt swelling and subsidence during the construction of roads and fields, which poses a serious threat to the stability and durability of the soil foundation, and is easy to damage Damage to the road surface. [0003] At present, the treatment methods used in the prior art include filling method, chemical treatment method, isolation layer method, groundwater table lowering method, etc. The f...

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): E02D3/00E02D3/12
CPCE02D3/00E02D3/12
Inventor 江妙根李显贵邓云仁郭志高刘龙松邓磊涂宇阳
Owner SICHUAN ROAD FIELD ENG CO LTD