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Strong weathered mudstone deep cutting slope protection structure and construction method

A technology for slope protection and strong weathering, which is used in infrastructure engineering, underwater structures, excavation, etc., can solve the problems of easy corrosion of hinged structures, lack of supporting effect, and difficult processing, and achieves high efficiency. Promote application value, ease of processing and installation, and the effect of reducing evaporation rate

Active Publication Date: 2022-03-25
CHINA GEZHOUBA (GRP) FIRST ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution lacks sufficient rigidity, cannot achieve the effect of support, and is also difficult to process, and the hinged structure is also prone to corrosion

Method used

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  • Strong weathered mudstone deep cutting slope protection structure and construction method
  • Strong weathered mudstone deep cutting slope protection structure and construction method
  • Strong weathered mudstone deep cutting slope protection structure and construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as figure 1Among them, a strong weathered mudstone deep cutting slope protection structure includes a multi-level steep slope protection 1 at the bottom and a multi-level gentle slope protection 15 at the top. The steep slope protection 1 in this example refers to a slope protection with a slope ratio of 1:1 structure. Gentle slope protection 15 refers to a slope protection structure with a slope ratio of less than 1:1.25. The preferred gentle slope protection 15 slope ratio in this example is 1:1.75. The steep slope protection 1 in this example is three grades, and the vertical height of each grade is not more than 10 meters, and the remaining ones are gentle slope protection 15, which are divided into four grades.

[0043] A platform is provided between the steep slope protection 1 at all levels, a platform is provided between the gentle slope protection 15 at all levels, a boundary platform 7 is provided between the steep slope protection 1 and the gentle slop...

Embodiment 2

[0057] A construction method of the above-mentioned strong weathered mudstone deep cutting slope protection structure, comprising the following steps:

[0058] S1, such as figure 1 Among them, excavate from the top, and construct the top drainage ditch 13 after excavation; the bottom of the top drainage ditch 13 is provided with a waterproof geotextile, and the top drainage ditch 13 is connected with the rapid flow channel, which is not shown in the figure.

[0059] S2, such as Figure 7 Among them, after excavating the first-level gentle slope protection 15, the grooves for the embedded seepage pipes 10 are excavated, including the pipe grooves for the longitudinal seepage pipes 102 and the horizontal seepage pipes 101. The horizontal seepage pipes 101 are more difficult to construct. Special equipment is set to construct the horizontal pipe groove 103, the depth of the horizontal pipe groove 103 is 30cm, the width is 2cm, the diameter of the horizontal seepage pipe 101 is 1...

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Abstract

The invention provides a strongly-weathered mudstone deep cutting slope protection structure and a construction method, the strongly-weathered mudstone deep cutting slope protection structure comprises multiple stages of steep slope protection parts located at the bottom and multiple stages of slow slope protection parts located at the top, platforms are arranged between the steep slope protection parts, platforms are arranged between the slow slope protection parts, and boundary platforms are arranged between the steep slope protection parts and the slow slope protection parts. The boundary platform is wider than other platforms; a frame beam is arranged on the steep slope protection; a row pile retaining wall structure is arranged at the top of the steep slope protection of the bottom stage, piles are arranged in the row pile retaining wall structure, and the ends of the piles are connected with the fracturing stay cables. The mode of combining the steep slope protection and the gentle slope protection is adopted, and the staggered row pile retaining wall structure is matched, so that the anti-sliding performance, the economic performance and convenient construction are balanced. According to the fractured stay cable, enough anchoring force is provided for the stay cable, and the shearing strength and the sliding strength of a soil body can be enhanced.

Description

technical field [0001] The invention relates to the field of highway construction, in particular to a protective structure and a construction method for a deep cut slope of strongly weathered mudstone. Background technique [0002] The geological structure of a highway slope is: surface silty clay; the upper layer is strongly weathered sandstone mudstone interbedded, rock mass is extremely broken, which is soft rock; the lower layer is middle weathered sandstone mudstone interbedded, sandstone is hard, mudstone is soft It is easy to soften after drying, and it is easy to crack after drying. The rock mass is relatively broken and is soft rock. The mudstone is easy to soften when soaked in water, and the shear strength drops sharply, so it is very easy for the slope to deform and slump along the weak layer. Therefore, bedrock fissure water stabilizes the slope during rainfall. And the height difference from the top of the slope to the bottom of the slope reaches 77 meters. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20E02D5/74E02D29/02
CPCE02D17/207E02D5/74E02D29/0275Y02A30/60
Inventor 望紫云任超孙其祥高学彦熊绍鑫
Owner CHINA GEZHOUBA (GRP) FIRST ENG CO LTD
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