Right-angle porous sand barrier

Abstract

The utility model relates to a right-angle porous sand barrier which is composed of sand blocking plates with holes, the sand blocking plates are perpendicular to one another, the sand blocking plates are rectangular plates, and a plurality of round holes are evenly distributed in the lower half portions of the sand blocking plates. The upper half part of the sand blocking plate with the holes slows down the sand flow, and plays a role in blocking sand and wind; the round hole part of the sand blocking plate with the holes enables part of sand flow to pass through, and the sand conveying effect is achieved. The first row of sand barriers are intermittently arranged, the distance between the two single sand barriers is one third of the width of the sand barrier, the second row of sand barriers is located behind the gap of the first row of sand barriers, the front sand barrier and the rear sand barrier are parallel, and the distance between the front sand barrier and the rear sand barrier is two times of the thickness of the sand barriers. The right-angle porous sand barrier provided by the utility model can play a good role in preventing wind and sand, is convenient to install and long in service life, and reduces the influence of an acceleration area behind the sand barrier while blocking and transporting sand.

Description

Technical Field

[0001] The utility model relates to a right-angle porous sand barrier, belonging to the technical field of engineering wind and sand protection. Technical Background

[0002] Desertification is a major environmental problem facing the world, and sandstorms pose a serious threat to ecological security and sustainable development. my country is one of the countries with the most serious land desertification in the world. Under the influence of strong winds, sand in the desert is transported to form wind and sand flows, which will cause great damage to transportation facilities such as roads and railways. As human activities further intensify the destruction of the natural environment, more and more land has become bare, exacerbating the desertification process in arid and semi-arid areas and causing serious impacts on the lives and production of local people.

[0003] In the face of the invasion of wind and sand, the current wind and sand control measures can be roughly divided into two types, one is biological control and the other is engineering control. Biological control is a sustainable wind and sand protection model. The planted plant protection belt can not only intercept the passing wind and sand flow, but also change the ecological environment of the protection belt. However, there are also certain defects. For example, the living conditions of vegetation are very harsh. In the early stage, engineering sand control is required to provide a growth environment and long-term irrigation, which is costly. Engineering control is less restricted by geographical areas and is generally used in areas with harsh natural conditions that are not suitable for biological protection or in the early stage of biological sand control. Commonly used engineering control measures include grass grid sand barriers, PLA sand net sand barriers, high vertical nylon net sand barriers, sand brick sand barriers, etc. However, the sand in front of the sand barrier accumulates quickly, resulting in a shorter timeliness of its wind and sand control.

[0004] The current sand barrier protection measure is to set up a non-ventilated sand barrier to prevent sand from moving forward and reduce the wind speed behind the sand barrier. The principle of sand blocking is to use the sand barrier to change the surrounding wind speed distribution law, so that sand is deposited in front of the sand barrier, raising the wind speed distribution height, and playing a role in purifying the wind and sand flow and blocking sand. However, with the in-depth study of the characteristics of wind and sand flow, it is found that the air flow distribution around the sand barrier has both acceleration and deceleration zones. The deceleration zone can make sand deposit in front of the sand barrier, but the acceleration zone will make sand cross the sand barrier with the movement of the airflow, reducing the sand blocking efficiency. In recent years, permeable sand barriers have been used, which have achieved good results. While blocking sand and transporting sand, the impact of the acceleration zone behind the sand barrier is reduced. Summary of the invention

[0005] The utility model aims to provide a right-angle sand barrier, which is used to solve the problems that the current traditional sand barriers have more sand accumulation and a larger turbulence acceleration zone behind the sand barriers.

[0006] The technical solution adopted by the utility model includes: the sand barrier is composed of mutually perpendicular sand blocking plates with holes, the sand blocking plates are rectangular plates, and a plurality of circular holes (2) are evenly distributed on the lower half of the sand blocking plates.

[0007] In the above-mentioned right-angle porous sand barrier, the upper part of the perforated sand-blocking plate slows down the wind and sand flow, thereby blocking sand and wind; the circular hole part of the perforated sand-blocking plate allows part of the wind and sand flow to pass through, thereby transporting sand.

[0008] The above-mentioned right-angle porous sand barrier is used in combination in the field. The first row of sand barriers is arranged intermittently, and the distance between two single sand barriers is one-third of the width of the sand barrier. The second row of sand barriers is located behind the gaps in the first row of sand barriers. The front and rear sand barrier boards are parallel and the distance between them is twice the thickness of the sand barriers.

[0009] The above-mentioned right-angle porous sand barrier is an integrated sand barrier made of biodegradable polylactic acid fiber (PLA) and has a burial depth of 1 / 4h.

[0010] Compared with the prior art, the utility model has the beneficial effect that, when used in a field assembly, the upper part of the sand barrier can reverse the flow of sand while the circular holes in the lower part can dredge the sand in front of the sand barrier and reduce the impact of the turbulent area behind the sand barrier. The sand barrier is made of biodegradable polylactic acid fiber PLA material, which is easy to install and will not cause secondary pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the overall structural diagram of the right-angle porous sand barrier of the utility model;

[0012] Figure 2 This is an arrangement distribution diagram of the right-angle porous sand barrier of the utility model. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 The overall structure of the right-angle porous sand barrier shown in the figure is composed of mutually perpendicular perforated sand-blocking plates. The sand-blocking plates are rectangular plates, and a number of circular holes (2) are evenly distributed in the lower half of the sand-blocking plates. The height h is generally 1.5m to 2m. The upper half of the perforated sand-blocking plates slows down the wind and sand flow, playing a role in blocking sand and wind; the circular hole part of the perforated sand-blocking plates allows part of the wind and sand flow to pass through, playing a role in transporting sand.

[0015] The right-angle porous sand barrier in the utility model is made of biodegradable polylactic acid fiber (PLA), and is composed of two mutually perpendicular sand-blocking plates, and 4×4 circular holes (2) are evenly punched on the lower half of the sand-blocking plates. The buried depth is 1 / 4h, about 0.3m to 0.5m.

[0016] Figure 2The arrangement distribution diagram of the right-angle porous sand barriers shown in the figure, the arrangement method of the above-mentioned right-angle porous sand barriers in the desert is that the first row of sand barriers are arranged intermittently, and the distance between two single sand barriers is one-third of the width of the sand barrier board, and the second row of sand barriers is located behind the gaps in the first row of sand barriers, and the front and rear sand barrier boards are parallel and the distance between them is twice the thickness of the sand barriers.

Claims

1. A right-angle porous sand barrier, characterized in that: The sand barrier (1) is composed of mutually perpendicular sand-blocking plates with holes, wherein the sand-blocking plates are rectangular plates, and a plurality of circular holes (2) are evenly distributed on the lower half of the sand-blocking plates.

2. A right-angle porous sand barrier according to claim 1, characterized in that: The upper part of the sand barrier (1) slows down the wind and sand flow, playing a role in blocking sand and wind; the circular hole (2) of the sand barrier (1) allows part of the wind and sand flow to pass through, playing a role in transporting sand.

3. A right-angle porous sand barrier according to claim 1, characterized in that: The material is an integrated sand barrier made of biodegradable polylactic acid fiber, and the burial depth is 1 / 4h.

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