A kind of filling method of high-fill earth-rock embankment

A high filling and filling technology, applied in the direction of roads, buildings, roads, etc., can solve the problems of slow construction speed and poor economic benefits, achieve high practicability, improve construction speed, and ensure compaction quality and stability. Effect

Active Publication Date: 2022-07-08
CCCC FIRST HIGHWAY CONSULTANTS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for filling high-fill earth-rock embankments in view of the problems of slow construction speed and poor economic benefits in the filling methods of high-fill earth-rock embankments in the prior art

Method used

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  • A kind of filling method of high-fill earth-rock embankment
  • A kind of filling method of high-fill earth-rock embankment
  • A kind of filling method of high-fill earth-rock embankment

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Embodiment 1

[0043] A highway project in Shiyan City, Hubei Province is located in a mountainous area with alternate valleys, undulating terrain and large undulating terrain. The main line adopts a design speed of 80km / h and a general roadbed width of 55m. There are 9 high-fill embankments in this project, with a maximum filling height of 80m. The filling mainly uses dolomite, schist, etc. and their weathered materials from the roadbed excavation as embankment fillers. The embankment compaction degree is required to be no less than 93%. tight. The soil-rock mixture is used as the filler in the field sampling, which is referred to as earth-rock filler for short. Among the earth-rock fillers, the particle size of hard and medium-hard fillers is 30cm-40cm. The moisture content of the soil and rock filler is controlled within ±2% of the optimum moisture content. When the moisture content of the soil and rock filler exceeds the range of +2%, spread the filler with a bulldozer and dry it; when ...

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Abstract

The invention relates to a filling method for a high-fill earth-rock embankment. The filling is carried out in layers from the base upward, and each layer is a filling unit layer; the thickness of each filling unit layer is 4m to 4.5m, and each The filling unit layer includes the first filling area, the second filling area and the third filling area; during the filling process of each filling unit layer, the third filling area adopts the method of loosening and compacting the soil and stone filler once For filling, the first filling area and the second filling area are filled by layered filling and layer-by-layer rolling. First, the first layered filling is carried out from the base to the top surface of the embankment, and then the different filling methods of the three filling areas cooperate with each other, so that the filling of the high-fill earth-rock embankment can not only ensure the compaction quality of the embankment and It has good stability, and can greatly improve the efficiency of filling construction, shorten the construction period, and has good economic benefits and strong practicability.

Description

technical field [0001] The invention relates to the technical field of road construction, in particular to a filling method for a high-fill earth-rock embankment. Background technique [0002] "Technical Specifications for Highway Subgrade Construction" (JTG / T 3610-2019) pointed out that the construction method of earth-rock embankment "should be filled in layers and compacted, and no dumping shall be allowed". In mountainous areas with alternate valleys, undulating terrain, and large undulating terrain, highway roadbed filling is generally used by the nearest road cutting excavation and earth and stone dumping and rolling. The method of filling layered and compacted to carry out large-scale filling construction will cause slow construction progress and high construction costs due to the application of labor and equipment. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a high-fill earth-rock embankment filling method for the problems ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C3/00E01C3/04E01C21/00
CPCE01C3/00E01C3/04E01C21/00Y02A30/60
Inventor 张留俊常洲李炜黄亚飞徐合清
Owner CCCC FIRST HIGHWAY CONSULTANTS
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