CN-120311668-B - Sand trap, and excavation-free sand stabilization system and method for Gobi desert strong wind area

CN120311668BCN 120311668 BCN120311668 BCN 120311668BCN-120311668-B

Abstract

The invention discloses a sand trap, and an excavation-free sand fixing system and method for a strong wind area in a Gobi desert. The excavation-free sand stabilization system for the Gobi desert strong wind area comprises a suspension type wind barrier, a sand trap and a suspension type sand stabilization component which are sequentially arranged along a main wind direction, wherein the distance between the suspension type wind barrier and the sand trap is d1, the distance between the sand trap and the suspension type sand stabilization component is d2, the distance between the suspension type sand stabilization component and a protection object is d3, d1 is less than 20h1, h1 is the height of the suspension type wind barrier, h1 ranges from 1.5 m to 3m, d2 is less than 20h2, h2 is the height of the sand trap, h2 ranges from 20 cm to 100cm, and d3 ranges from 10m to 100m. In the upwind direction, the excavation-free suspended wind barrier and the sand trap can effectively capture wind sand particles. In the downwind direction, the suspended sand fixing assembly without excavation thoroughly fixes the remaining wind sand which is not blocked, and the problem of flying sand and dust caused by engineering disturbance can be reduced while the gobi sand damage is lightened.

Inventors

HAN QINGJIE
LI QING
MA SHIJUN
WANG XUEFENG
LIU FEI
XIAO JIANHUA
LIU YONGQING
YAO ZHENGYI
HE YUXUAN
ZHANG XINPENG

Assignees

新疆华电天山发电有限公司
中国科学院西北生态环境资源研究院
中国电建集团北京勘测设计研究院有限公司

Dates

Publication Date: 20260512
Application Date: 20250530

Claims (9)

1. A non-excavation sand stabilization system for Gobi desert strong wind areas is characterized by comprising a suspension type wind barrier, a sand trap and a suspension sand stabilization assembly which are sequentially arranged along a plurality of strips of main wind direction, The sand trap comprises a top end face, a first side face and a second side face, wherein the top end face is provided with a first sand fixing grid, the first side face and the second side face are sequentially arranged on two sides of the first sand fixing grid along a main wind direction, a trapezoid product Sha Qiangshi is formed among the first sand fixing grid, the first side face, the second side face and the ground surface, the included angle between the first side face and the ground surface is 15-40 degrees, the included angle between the second side face and the ground surface is 15-40 degrees, the sand trap further comprises a first supporting mechanism, the first supporting mechanism is used for supporting the first sand fixing grid to keep a first distance from the ground surface, a first limiting piece is arranged on the first supporting mechanism, the first sand fixing grid is arranged above the first limiting piece along a horizontal direction, and when the second distance is reached between the sand accumulation face in the product Sha Qiangshi and the first sand fixing grid, the first limiting piece moves vertically on the first supporting mechanism along a direction far away from the ground surface; The suspension type wind barrier comprises a bracket mechanism and a wind barrier main body, wherein the wind barrier main body is arranged on the bracket mechanism and can perform pendulum type swing; The suspended sand fixing assembly comprises a second sand fixing grid and a second supporting mechanism, wherein the second supporting mechanism is used for supporting the second sand fixing grid to keep a third distance from the ground surface, a sand accumulation chamber is formed between the second sand fixing grid and the ground surface, a second limiting piece is arranged on the second supporting mechanism, the second sand fixing grid is arranged above the second limiting piece along the horizontal direction, and when a fourth distance is reached between the sand accumulation surface in the sand accumulation chamber and the second sand fixing grid, the second limiting piece vertically moves on the second supporting mechanism along the direction far away from the ground surface, wherein the third distance is 20 cm-50 cm, and the fourth distance is 5 cm-10 cm; The distance between the suspension type wind barrier and the sand trap is d1, the distance between the sand trap and the suspended sand-fixation assembly is d2, the distance between the suspended sand-fixation assembly and a protection object is d3, d1 is less than 20h1, h1 is the height of the suspension type wind barrier, the value range of h1 is 1.5 m~3m,d2<20h2,h2 is the height of the sand trap, the value range of h2 is 20 cm-100 cm, the value range of d3 is 10 m-100 m, the width of the sand trap is L1, the width of a first sand-fixation grid in the sand trap is L2, the width of the suspended sand-fixation assembly is L3, the value range of L1 is 4 m-7 m, the value range of L2 is 2 m-5 m, and the value range of L3 is 5 m-20 m.
2. The excavation-free sand stabilization system for a gobi desert strong wind area of claim 1, wherein the sand trap further comprises a plurality of second attachment mechanisms disposed on the first sand stabilization grid.
3. The excavation-free sand stabilization system for the Gobi desert strong wind area according to claim 1, wherein the first support mechanism comprises a plurality of upright posts which are arranged in a rectangular array and penetrate through the top end face and are used for supporting the first sand stabilization grid, the first limiting pieces are arranged on the upright posts, the arrangement distance between the upright posts is 1 m-2 m, and the height of the upright posts is 1 m-1.5 m.
4. The excavation-free sand stabilization system for the Gobi desert strong wind area according to claim 3, wherein the first distance is 20 cm-100 cm in value range, and the second distance is 5 cm-10 cm in value range.
5. The excavation-free sand stabilization system for the gobi desert strong wind area of claim 1, wherein the bracket mechanism comprises at least a cross bar and a vertical bracket set, the cross bar is fixed between the two vertical bracket sets, and the windbreak body is arranged on the cross bar.
6. The excavation-free sand stabilization system for the Gobi desert strong wind area according to claim 5, wherein the swing angle range of the windbreak body is 0-40 degrees.
7. The excavation-free sand stabilization system for the Gobi desert strong wind area according to claim 5, wherein the windbreak main body is of a porous structure, and the dredge degree of the windbreak main body is 20% -40%.
8. An excavation-free sand stabilization method for a strong wind region of a gobi desert, characterized in that the excavation-free sand stabilization method is implemented based on the excavation-free sand stabilization system for a strong wind region of a gobi desert of any one of claims 1 to 7, and comprises: the suspended wind barrier, the sand trap and the suspended sand fixing component are used for blocking and fixing sand and dust moving along with the main wind direction to the protection object.
9. The excavation-free sand stabilization method for the Gobi desert strong wind area according to claim 8, wherein sand plants are planted at the bottom of the sand trap and suspended sand stabilization assembly, and bottom accumulated sand is fixed.

Description

Sand trap, and excavation-free sand stabilization system and method for Gobi desert strong wind area Technical Field The invention relates to the technical field of ecological environment treatment in desert areas, in particular to a sand trap, and an excavation-free sand fixing system and method for a strong wind area in Gobi desert. Background In gobi areas, common sand and wind protection measures include high vertical sand barriers, sand fixing grids, sand blocking walls, windproof and dust suppression nets and the like. These measures typically require the placement of foundation piles and then the creation of posts, pins, etc. to stabilize the net structure or wall, but the associated excavation work tends to damage the earth's surface. The sand setting ditch, the sand cutting ditch and the sand blocking dyke are commonly used sand setting methods in Gobi areas, have high-efficiency sand setting capability, but have the defect of seriously damaging the Gobi surface. These trenches are in the form of strips with large depth and area, and the excavated fine material is often deposited upwind of the trench to form a sand dam, which may cause serious wind erosion and dust problems. Therefore, there is a great need for improvements in the art to reduce damage to the gobi surface. In addition, the covering measures such as biological crust, sand fixing agent, spray seeding, clay, bentonite, gravel covering and the like have shallow penetration depth and low strength, and can only cover a surface of a few millimeters to a few centimeters. These coatings are loose and of insufficient strength, are prone to breakage after rolling or stepping, and even are pressed into the sand bed, resulting in exposure of the bottom fine sand, causing wind erosion. Especially in the desert area, the disturbance on the gobi surface can cause dust to fly in the early stage of the construction of large-scale wind power and photoelectric energy bases, and the risk of sand burial is brought to traffic and facilities in downstream areas. Near-surface sand gravel layers in gobi areas are typically only a few centimeters to tens of centimeters thick, with a few tens of centimeters thick mirabilite layer, saline-alkali layer, or hard clay layer below, with a thicker fine sand gravel mixture at the bottom. The surface gravel layer protects the underlying fine material from wind erosion like armor. Therefore, the sand wind protection principle in Gobi is to reduce disturbance as much as possible and greening is carried out under proper conditions. The desertification control difficulty of the area is high, and the task is urgent. To solve the above-mentioned problems, it is necessary to provide an effective sand control scheme for reducing or avoiding disturbance in Gobi areas to reduce the possible dust damage caused by artificial disturbance in sand control. Disclosure of Invention The invention aims to provide a sand trap, and an excavation-free sand fixing system and method for a strong wind area in Gobi desert, so that the defects of the prior art are overcome. In order to achieve the purpose of the invention, the technical scheme adopted by the invention comprises the following steps: the first aspect of the invention provides a sand trap, which comprises a top end face, a first side face and a second side face, wherein the top end face is provided with a first sand fixing grid, the first side face and the second side face are sequentially arranged on two sides of the first sand fixing grid along a main wind direction, and a sand accumulation cavity is formed among the first sand fixing grid, the first side face, the second side face and the ground surface. The first side and the second side are disposed opposite to each other, and are understood to be an ascending ramp and a descending ramp. The ascending ramp and the descending ramp are made of plant fiber foamed cement plates, the thickness is 3-5 cm, the length is 1-2 m, and the width is 1-2 m. In some more specific embodiments, the first side surface has an included angle ranging from 15 degrees to 40 degrees with the ground surface, and the second side surface has an included angle ranging from 15 degrees to 40 degrees with the ground surface. In some more specific embodiments, the sand trap further comprises a first support mechanism for supporting the first sand fixation grid a first distance from the ground surface. Preferably, a first limiting part is arranged on the first supporting mechanism, the first sand fixing grille is arranged above the first limiting part along the horizontal direction, and when a second distance is reached between the sand accumulation surface in the sand accumulation Sha Qiangshi and the first sand fixing grille, the first limiting part vertically moves on the first supporting mechanism along the direction far away from the ground surface. More preferably, the first distance is 20-100 cm, and the second distance is 5-10 cm. Preferably, the fir