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Construction method of mudstone-filled embankment

A construction method, mudstone technology, applied to roads, roads, buildings, etc., can solve problems such as uneconomical, high cost, and long construction time, and achieve the effects of saving engineering costs, good engineering quality, and improving utilization

Inactive Publication Date: 2011-04-27
河南省新开元路桥工程咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method takes a long time to construct, and the cost is high, so it is not very economical.

Method used

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  • Construction method of mudstone-filled embankment
  • Construction method of mudstone-filled embankment

Examples

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Embodiment 1

[0023] Example 1 : construction method of embankment filled with mudstone

[0024] 1. Detection of rock composition and mechanical characteristics of filled roadbed:

[0025] In order to understand the Jishao Expressway project and understand the rock composition and mechanical characteristics of the filled roadbed, samples were taken from the JSTJ-07 contract section where the test road section is located, and rock chemical composition and physical and mechanical tests were carried out on typical samples.

[0026] Table 1: Physical and mechanical test data table of indoor rock

[0027]

[0028] Rock ore identification results are as follows (% by weight):

[0029] Sample Ⅰ: reddish calcium-containing mudstone (or shale), clay mineral content > 70%, calcite (calcite) content 10% ~ 20%, iron content 5% ~ 10%, quartz (debris) content < 5% %.

[0030] Sample II: reddish silty calcareous mudstone, with clay mineral content >60%, calcite (calcite) content 10%~20%, iron cont...

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Abstract

The invention relates to a construction method of a mudstone-filled embankment, comprising the following steps: levelling the embankment; arranging ramming points, wherein the positions of the ramming points on an upper layer and a lower layer are staggered, and the ramming points on the second layer are in the middle of the ramming points on the first layer; filling with the ramming points at positions which is 0.5-2.0 m far away from the top of a road bed, wherein the ramming point overlapping area is not less than 1 / 3; during strong forced ramming construction, carrying out forced ramming construction on the ramming points accurately by a forced rammer; detecting that settlement, heavy dynamic penetration value and surface wave velocity are qualified, filling next layer of embankment; carrying out forced ramming on half-dug and half-filled embankment, and ramming towards the middle of the embankment row by row from the edge of the embankment; carrying out the forced ramming on the embankment of the boundary of filling and digging; ramming the boundary of filling and digging row by row from the edge of the embankment on the position far away from the boundary of filling and digging; levelling after ramming is finished; and then, compacting by strong vibration. The invention has the advantages that fewer force ramming processing and constructing machines are utilized, the method is relatively simple, the construction period is obviously shorter than that of sand-mixed construction, the excavation utilization ratio is improved, the cost for carrying out the secondary crushing on rock is reduced, and the project quality is good.

Description

technical field [0001] The invention relates to a construction method for filling an embankment, in particular to a construction method for filling an embankment with mudstone. Background technique [0002] Jishao Expressway is located in Jiyuan City, Henan Province. It is an important section of Changyuan-Jiyuan Expressway, a provincial trunk road in the Henan Expressway Planning Network, and one of the main exit roads leading to Shanxi in the northwest of Henan Province. The total length of the route is 59.7Km. Most of the surface covering layer in the project area is strongly weathered rock or a small amount of low liquid limit clay, and the lower part is argillaceous siltstone and mudstone. These rocks have high strength in a dry state, but are easily disintegrated and softened in a water-immersed state, and their strength decreases rapidly. In particular, the strength of the mudstone in the saturated state is only about 10% of the strength in the dry state, and it has ...

Claims

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Application Information

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IPC IPC(8): E01C3/00E01C3/04
Inventor 王中要刘鸿韬杨允程秀兰郜天伟
Owner 河南省新开元路桥工程咨询有限公司
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