Construction method using red-layer mudstone as high-fill dynamic compaction roadbed filler

A technology for red-bed mudstone and roadbed filler is applied in the field of dynamic compaction construction of red-bed mudstone high-fill roadbed, which can solve the problems of complex construction process, low efficiency, and no construction technical scheme is proposed, so as to simplify construction operation steps and reduce construction. Steps, avoid the effect of filling duplication of construction

Active Publication Date: 2021-08-17
CCCC ROAD & BRIDGE CONSULTANTS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there are few studies on the complete construction technology of red bed mudstone filling roadbed. The current roadbed filling is mainly based on the construction method of layered filling and multi-layer ramming or rolling, and the waterproof and drainage treatment is still based on the traditional pavement surface layer. Foamed asphalt water

Method used

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  • Construction method using red-layer mudstone as high-fill dynamic compaction roadbed filler
  • Construction method using red-layer mudstone as high-fill dynamic compaction roadbed filler
  • Construction method using red-layer mudstone as high-fill dynamic compaction roadbed filler

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Example Embodiment

[0039] Example 1:

[0040] See Figure 1 to 4 ,

[0041] A construction method of using red laminar mudstock stone as a high filler strong circuit base filler,

[0042] Include the following steps:

[0043] S1, the red-laminar mudstone is preliminated, and the red sandstone filler that blasts is not covered into the atmosphere, sunlight and rain, and the number of pre-disintegrated treatment is 8 to 15.

[0044] Under these natural factors, the red laminar mudstone rapidly weathering disintegration, the strength is sharply reduced, and the activity is rapidly eliminated.

[0045] S2, the red sandstone filler procedured by the pre-disintegration can be transported to the embankment, then the strong treatment is carried out, first take two times, and then full.

[0046] The processing of this step is to consolidate the embankment filler, accelerate the packing drainage, and increase the confirmation.

[0047] S3, laying a gray soil mat, a mixed stone gray soil of less than 15 mm is e...

Example Embodiment

[0056] Example 2:

[0057] See Figure 1 to 4 ,

[0058] A construction method of using red laminar mudstock stone as a high filler strong circuit base filler,

[0059] Include the following steps:

[0060] S1, the red-laminar mudstone is pre-dislocated, which will not cover the red sandstone filler of the blasting to the atmosphere, sun and rain, sunny weather temperature is higher than 30 ° C, watering every day, sunny weather temperature When the high temperature is below 30 ° C, water is watered once every other day, and the total number of pre-disintegrated treatment is 8 to 15. It is judged whether or not the red laminar mudstone has disintegrated, the particle size is 50 ~ 70 cm, the particle diameter is 50 to 70 cm. After several days of the prelimination, there are a large number of cracks, and most of the crushed rock disintegration. When driving with the feet, the large rock block broke into a straw rock, that is, the disintegration treatment of the red sandstone was com...

Example Embodiment

[0073] Example 3:

[0074] See Figure 1 to 4 ,

[0075] A construction method of using red laminar mudstock stone as a high filler strong circuit base filler,

[0076] Include the following steps:

[0077] S1, the red-laminar mudstone is pre-dislocated, which will not cover the red sandstone filler of the blasting to the atmosphere, sun and rain, sunny weather temperature is higher than 30 ° C, watering every day, sunny weather temperature When the high temperature is below 30 ° C, water is watered once every other day, and the total number of pre-disintegrated treatment is 8 to 15. It is judged whether or not the red laminar mudstone has disintegrated, the particle size is 50 ~ 70 cm, the particle diameter is 50 to 70 cm. After several days of the prelimination, there are a large number of cracks, and most of the crushed rock disintegration. When driving with the feet, the large rock block broke into a straw rock, that is, the disintegration treatment of the red sandstone was com...

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Abstract

The invention belongs to the technical field of dynamic compaction construction of a red-layer mudstone high-fill roadbed, and discloses a construction method. The invention mainly aims to solve the problems caused by using the red-layer mudstone as the roadbed filler. The method comprises the following steps: firstly, carrying out pre-disintegration treatment on red-layer mudstone; then, tamping a red-layer mudstone filler through dynamic compaction construction, and tamping the embankment through a construction scheme that point compaction is conducted firstly and then full compaction is conducted, so that the compactness of the embankment filler meets the corresponding construction requirement, and water permeation is reduced; paving lime soil and sand on the upper surface layer of the embankment to serve as a waterproof cushion layer, and performing tamping; after roadbed filling is completed, applying a soil hydrophobic agent on the surface of a roadbed slope to prevent the red-layer mudstone filler from absorbing natural rainfall through the hydrophobic effect; and continuously laying a sandy water guide layer on the roadbed slope to prevent surface rainfall from being accumulated in gaps in the roadbed. The dynamic compaction technology and the red-layer mudstone pre-disintegration technology are utilized, so that the red-layer mudstone roadbed has good compactness and stability, and the long-term safety and stability of the red-layer mudstone roadbed are guaranteed in combination with the waterproof and drainage design.

Description

technical field [0001] The invention relates to the technical field of dynamic compaction construction of red-bed mudstone high-fill embankment. Background technique [0002] Since the Mesozoic, that is, the Triassic, Jurassic, Cretaceous, and Cenozoic Paleogene lacustrine, fluvial, alternate river-lake or foothill-diluvial continental clastic subsidence rocks of the red strata, in Sichuan, my country The basin is its core development area, and its lithology is dominated by sandstone, mudstone, and siltstone, among which mudstone has the largest content and proportion. Red bed mudstone has strong hydrophilicity and weak water permeability. If it is in full contact with water, it will soften and plasticize, and has the characteristics of weak weathering resistance and low strength. [0003] When it is used as roadbed filler, because the particles are easily broken, the uniaxial compressive strength is low, the weathered products are easy to disintegrate and soften when expose...

Claims

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Application Information

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IPC IPC(8): E01C3/04E02D3/10E02D3/046E02D17/20
CPCE01C3/04E02D3/10E02D3/046E02D17/20Y02A30/60
Inventor 尹红亮申艳军文良东郝建帅顾金柱贾海梁白志鹏
Owner CCCC ROAD & BRIDGE CONSULTANTS
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