Subgrade scouring preventing and reinforcing structure for gabion wall and groin system combination

Abstract

The invention relates to a subgrade scouring preventing and reinforcing structure, in particular to a subgrade scouring preventing and reinforcing structure for a gabion wall and groin system combination. The subgrade scouring preventing and reinforcing structure comprises groins, a road shoulder retaining wall and gabion walls, the multiple groins distributed at intervals are distributed on the portions, located on one side of a riverway, of the road shoulder retaining wall, the groin root ends of the groins are fixedly connected with the road shoulder retaining wall, and the groin head endsof the groins obliquely stretch into the riverway. According to the technical scheme, a groin system is arranged on the outer side of the road shoulder retaining wall of a road, the adjacent groins are connected into a whole through the gabion walls, and the gabion walls, the groin system and the road shoulder retaining wall are combined in a built-in mode to form a steady water damage preventionstructure; direct scouring of water flow scouring on the prevention structure and indirect destruction of water flow scouring on road slopes are reduced, the road water damage risk is reduced, and safety and unobstruction of the road are guaranteed; and meanwhile, it can be guaranteed that long-deflecting-flow groins are protected against water damage destruction, and the subgrade scouring preventing and reinforcing structure is mainly suitable for a deflecting-flow groin system with the long groin body and the river reach with the high water flow impact force.

Description

technical field

[0001] The present application relates to a subgrade anti-scour reinforcement structure, in particular to a subgrade anti-scour reinforcement structure composed of gabion walls and spur dam groups. Background technique

[0002] Spur dikes are embankment protection structures with good deflecting effects, especially long deflected spur dikes, which play an important role in the prevention and control of water damage on roads along mountains and rivers. Due to the top erosion and erosion of the water flow, it is easy to cause great damage to the head of the spur dike and the foundation. A single spur dike is subjected to continuous erosion by the water flow and causes local and overall damage; spur dikes can gradually reduce the scour speed of the water flow to a certain extent , and strengthen the protective performance of a single spur dike, but due to the lack of a stable connection between the dams in the spur dike group, the protection performance of the d...

Examples

Embodiment 1

[0037] Example 1, for the road along the mountain and the river in the river valley, one side of the road bed is topped by the water flow on the concave bank of the bend, the water flow is turbulent, the water level is deep, and the sand-carrying capacity is strong. The initial measurement of the water level found that it was greater than 2.0 meters, and the water flow velocity was 3.2 meters / s. The survey found that the spur dams built here were repeatedly washed by strong currents, and the dam heads and dam roots were damaged. Based on the above information, use this application to carry out combined protection at the work site.

[0038] The original damaged retaining wall is removed, and a new high shoulder retaining wall 1 is built, and then the gabion wall 2 structure is added to be closely fixed with the spur dam. The dimensions are designed as follows: the total height h3 of the shoulder retaining wall is 7.5 meters, the width b4 of the vertical wall is 1 meter, the wi...

Embodiment 2

[0039] Example 2, the side of the road is at the bend of the river, the roadbed slope is exposed to the water, the water potential is small, but the seasonality is obvious, there is a large water flow in spring and summer, and the water level is low in the dry season. Most of the work site is a group of dams formed by spur dams, which are well protected under normal circumstances, but they are repeatedly damaged when encountering nodular floods, so repeated water damage occurs. Based on the above information, use this application to carry out combined protection at the work site.

[0040] On the basis of the current spur dam group, a gabion wall 2 structure is added, and the shoulder wall behind the dam is repaired to form a new protective composite structure. The dimensions are designed as follows: the total height h3 of the shoulder retaining wall is 7 meters, the width b4 of the vertical wall is 1 meter, the width b5 of the base is 2.5 meters, the height h4 of the base is 1...

technical field

[0001] The present application relates to a subgrade anti-scour reinforcement structure, in particular to a subgrade anti-scour reinforcement structure composed of gabion walls and spur dam groups. Background technique

[0002] Spur dikes are embankment protection structures with good deflecting effects, especially long deflected spur dikes, which play an important role in the prevention and control of water damage on roads along mountains and rivers. Due to the top erosion and erosion of the water flow, it is easy to cause great damage to the head of the spur dike and the foundation. A single spur dike is subjected to continuous erosion by the water flow and causes local and overall damage; spur dikes can gradually reduce the scour speed of the water flow to a certain extent , and strengthen the protective performance of a single spur dike, but due to the lack of a stable connection between the dams in the spur dike group, the protection performance of the d...

Examples

Embodiment 1

[0037] Example 1, for the road along the mountain and the river in the river valley, one side of the road bed is topped by the water flow on the concave bank of the bend, the water flow is turbulent, the water level is deep, and the sand-carrying capacity is strong. The initial measurement of the water level found that it was greater than 2.0 meters, and the water flow velocity was 3.2 meters / s. The survey found that the spur dams built here were repeatedly washed by strong currents, and the dam heads and dam roots were damaged. Based on the above information, use this application to carry out combined protection at the work site.

[0038] The original damaged retaining wall is removed, and a new high shoulder retaining wall 1 is built, and then the gabion wall 2 structure is added to be closely fixed with the spur dam. The dimensions are designed as follows: the total height h3 of the shoulder retaining wall is 7.5 meters, the width b4 of the vertical wall is 1 meter, the wi...

Embodiment 2

[0039] Example 2, the side of the road is at the bend of the river, the roadbed slope is exposed to the water, the water potential is small, but the seasonality is obvious, there is a large water flow in spring and summer, and the water level is low in the dry season. Most of the work site is a group of dams formed by spur dams, which are well protected under normal circumstances, but they are repeatedly damaged when encountering nodular floods, so repeated water damage occurs. Based on the above information, use this application to carry out combined protection at the work site.

[0040] On the basis of the current spur dam group, a gabion wall 2 structure is added, and the shoulder wall behind the dam is repaired to form a new protective composite structure. The dimensions are designed as follows: the total height h3 of the shoulder retaining wall is 7 meters, the width b4 of the vertical wall is 1 meter, the width b5 of the base is 2.5 meters, the height h4 of the base is 1...

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