Construction method of underground water through cut of railway in desert area

A construction method and groundwater technology, applied in roads, foundation structure engineering, sheet pile walls, etc., can solve problems such as difficulties in precipitation, and achieve the effect of maintaining stability and ensuring the time and effect of precipitation

Inactive Publication Date: 2017-09-12
锦州铁道勘察设计院有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide a solution to the technical problem of how to rationally carry out underground water cutting construction under the condition of difficult precipitation and easy collapse of the excavated roadbed in the process of underground water cutting construction in desert areas. When the groundwater level is close to the groundwater le

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  • Construction method of underground water through cut of railway in desert area

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Embodiment Construction

[0033] Such as figure 1 As shown, the construction method of railway underground water cutting in this desert area is:

[0034] (1) Use crawler excavators to excavate the road cutting to 0.3m above the groundwater level;

[0035] First restore the center line, and conduct on-site investigation, according to the terrain, section and length of the cutting. Then combined with the actual site and design requirements, build temporary drainage facilities, and consider combining with permanent drainage facilities.

[0036] Before the project starts, check the design documents according to the site investigation data. The content mainly includes: topography, quantity of excavation, location of borrow and spoil site, earthwork utilization, etc.

[0037]Release the excavation side line piles according to the re-tested line center line, the positioning is accurate when setting out the line, and the drainage system at the top of the cutting, such as the intercepting ditch and the gutte...

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Abstract

A construction method for railway groundwater cuttings in desert areas, characterized in that: (1) using crawler excavators to excavate the cuttings to 0.3m above the groundwater level; (2) reducing the groundwater level by combining well points and drainage ditches on both sides; (3) , Use Larsen steel sheet piles to protect the fine sand on both sides, prevent the fine sand from collapsing, excavate underground water blind ditch pits, and construct underground drainage systems such as underground water blind ditch; 1m below the elevation and carry out tamping, the cutting base and subgrade bed are replaced and compacted; (5) Slope brushing and protection of the cutting side slope. The beneficial effect of the present invention is: the construction method of the railway underground water cutting in the desert area of ​​the present invention mainly solves the technical problem of precipitation during the excavation of the road cutting and the construction of underground drainage facilities when the road cutting is built in the desert area and the groundwater is abundant. In the process of dewatering, the well point is used for dewatering, which effectively solves the technical problem of avoiding the collapse of powder and fine sand during the excavation of the foundation pit.

Description

technical field [0001] The invention relates to the technical field of railway embankment construction, in particular to a construction method for railway underground water cuttings 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. The Inner Mongolia area is the most concentrated area of ​​desert in my country. Although the surface of this type of area is covered by desert, the underground water system is rich. During the construction of railways in this type of area, it is often encountered that the groundwater level in the cutting is higher than the shoulder elevation of the railway design. In view of this situation, groundwater road cuttings are formed. During the construction process, there were problems such as difficulty in precipitation and easy collapse of excavated road cuttings. The...

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Application Information

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IPC IPC(8): E01B2/00E02D19/10E02D5/04E02D19/08
CPCE01B2/006E02D5/04E02D19/08E02D19/10
Inventor 张强李作义郭玉峰李士鹏王志辉李志刘伟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
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