Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Filling construction method for ordinary-speed railway subgrade in desert area

A common-speed railway and construction method technology, applied to roads, buildings, tracks, etc., can solve problems such as huge project investment

Inactive Publication Date: 2017-09-01
锦州铁道勘察设计院有限公司
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a serious shortage of Group A and Group B soil along the line, and all the fillers are transported from abroad, and the project investment is huge

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
  • Filling construction method for ordinary-speed railway subgrade in desert area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Such as figure 1 As shown, the filling construction method of ordinary speed railway subgrade in this desert area is:

[0025] ①. Remove the surface soil, and use impact rolling 24 times to treat the base to complete the base treatment;

[0026] ⑴ Construction preparation

[0027] Before subgrade construction, the construction survey work must be done well, including re-measurement of conductors, midlines, benchmarking points, cross-section inspection and supplementary surveying, and addition of benchmarking points.

[0028] According to the restored subgrade center pile, design drawings, construction technology and relevant regulations, determine the specific location of subgrade side piles, subgrade slope toe, and slope protection.

[0029] ⑵, construction process

[0030] Use crawler bulldozers to remove surface humus, grass roots and other sundries within the range of the side piles for the subgrade and the slope toe of the subgrade, with a thickness of 0.3m~0.6m...

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

PropertyMeasurementUnit
Tensile strengthaaaaaaaaaa
Login to View More

Abstract

A construction method for subgrade filling of general-speed railways in desert areas, which is characterized in that: ①, surface soil is removed, and the base is processed by impact rolling 24 times to complete the base treatment; ②, the part below the surface of the base bed is filled with silt and fine sand Lay a layer of two-way geogrid with a tensile strength of 30KN / m every vertical height of 0.6m in the sand layer, and lay a layer of TGDG260 one-way geogrid every 1.8m when the embankment filling height is greater than 12m; ③, Lay 0.2 m thick medium-coarse sand, and a layer of composite geomembrane is sandwiched in the medium-coarse sand; ④, the surface layer of the foundation bed is filled with 0.6m thick Group A soil; ⑤, the subgrade slope is protected by shrub grids, arranged in a square The distance is 1m. The beneficial effect of the present invention is: it mainly solves the technical problem of how to carry out reasonable filling construction under the condition of lack of earthwork in the desert area and severe wind erosion of the side slope; The initial compaction and multiple compaction techniques of road rollers are used as an auxiliary means of quality control to ensure the quality of roadbed filling construction.

Description

technical field [0001] The invention relates to the technical field of railways or bridges, in particular to a method for filling and constructing subgrades of normal-speed railways in desert areas. Background technique [0002] my country is one of the countries with a large number of deserts. The total area of ​​deserts is about 1.3 million square kilometers, accounting for about 13% of the country's land area. Inner Mongolia is an area with relatively concentrated deserts in my country. The construction of railways in this type of area is faced with a serious shortage of earthworks, difficulties in slope protection, and easy erosion by wind and sand. The Pingandi to Zhelimu section of the Jitong capacity expansion project is located in the Horqin sandy land. The landform is mainly flat sandy land with sand dunes interspersed. The surface is mostly aeolian sand and the vegetation coverage is low. According to railway standards, under normal circumstances, the surface laye...

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): E01B2/00
CPCE01B2/00E01B2204/14
Inventor 李作义郭玉峰刘伟张强王明李志王志辉赵佳权赵鸿磊刘强崔威王雷
Owner 锦州铁道勘察设计院有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com