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Construction method for filling roadbed with coal gangues

A construction method, coal gangue technology, applied in the direction of roads, roads, buildings, etc., can solve the problems of no construction method, etc., and achieve the effects of shortening the construction period, reducing environmental pollution, and high efficiency

Inactive Publication Date: 2010-06-09
CHINA COMM ROAD & BRIDGE NORTH CHINA ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of coal gangue as roadbed filler is still in the trial stage, and there is no mature construction method

Method used

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  • Construction method for filling roadbed with coal gangues
  • Construction method for filling roadbed with coal gangues

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Experimental program
Comparison scheme
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Embodiment Construction

[0023] see figure 1 , construction method of the present invention is as follows:

[0024] construction survey

[0025] The construction survey is carried out according to the usual earth filling subgrade construction method, including restoring the subgrade center line, detecting the elevation of the underlying layer, measuring the elevation of the middle and side piles, and fixing the elevation piles to prepare for the paving of the coal gangue subgrade. Coal gangue is constructed by layered filling.

[0026] Bound soil construction

[0027] Before filling each layer of coal gangue, first fill in the same layer of coal gangue as the edge-wrapped soil, and pre-press it so that it is 5-8cm higher than the predetermined loose layer thickness of the same layer of coal gangue. After the coal gangue cloth of the same layer is completed, it will be compacted synchronously with the gangue filler of this layer to increase the structural integrity. The edge-wrapped soil shall be f...

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Abstract

The invention relates to a construction method for filling a roadbed with coal gangues, which comprises the following steps of: filling the coal gangues in a layering mode; before filling each layer of the coal gangues, filling package slope soil on the same layer with the coal gangues first; prepressing the package slop soil to ensure that the preset loose laying depth is 5 to 8 centimeters higher compared with that of the coal gangues on the same layer; then filling the coal gangues, watering or air-drying the coal gangues according to the optimum water content of the coal gangues, and compacting the coal gangues; filling the coal gangues layer by layer; and sealing the layers with clay when the coal gangues reach a standard height layer-sealing part of the roadbed.

Description

technical field [0001] The invention relates to the field of expressway roadbed filling construction, in particular to a construction method for filling roadbeds with coal gangue. Background technique [0002] As the main structure of the expressway, the subgrade needs a large amount of earthwork for its filling. At present, the filling materials for expressway roadbed construction are basically earthworks. The basic construction method is to requisition temporary land within the nearest range of the expressway, excavate earthwork, and apply it to roadbed filling. However, the guidelines for land use in my country's land use planning outline are to protect cultivated land; to implement the policy of "increasing revenue" and "cutting expenditure"; to make overall plans and adjust the land use structure according to one's ability. [0003] In order to protect cultivated land, coal gangue has been used as roadbed filler in some expressway construction in recent years. Coal ga...

Claims

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Application Information

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IPC IPC(8): E01C3/00E01C3/04
Inventor 彭立志田连民阎王虎兰锦檀兴华樊俊丽
Owner CHINA COMM ROAD & BRIDGE NORTH CHINA ENG
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