CN212582591U

CN212582591U - Ditch head is backfilled and is taken measures comprehensive slope protection structure of using

Info

Publication number: CN212582591U
Application number: CN202020843456.5U
Authority: CN
Inventors: 冯立; 金钊; 张珊珊; 张晶; 褚光琛
Original assignee: Institute of Earth Environment of CAS
Current assignee: Institute of Earth Environment of CAS
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2021-02-23
Anticipated expiration: 2030-05-20

Abstract

The utility model discloses a ditch head is backfilled and is taken measures comprehensive slope protection structure of using, including irrigating main part, ecological main part, engineering main part and water and soil separator box, supporting ditch bottom sump pit and hold the soil pond. The irrigation main body consists of a water collecting tank, a filter screen and a pumping system, and is matched with a soil storage pool and mainly used for collecting rainwater and recharging slope vegetation; the ecological main body mainly comprises double-polymer material improved soil, a drip irrigation system and slope protection vegetation, and is used for counteracting rainfall splash erosion, saturated mud flow scouring and soil maintenance; the engineering main body mainly comprises an arch skeleton concrete slope protection structure, horizontal and vertical drainage blind ditches and a sandstone inverted filter layer at the lower part of a slope body, and is used for effectively slowing down erosion of the fine ditches and the cut ditches, dredging surface runoff and reducing lower submerged erosion; the ditch bottom sump pit is mainly used for storing the water body separated by the water-soil separation tank, can be combined with a pumping system, effectively reduces the underground water level, slows down the internal corrosion and improves the stability of a backfill slope body.

Description

Ditch head is backfilled and is taken measures comprehensive slope protection structure of using

Technical Field

The utility model relates to a fixed ditch protection highland top engineering prevention and control technical field suitable for extensive agricultural development and engineering construction specifically is a ditch head backfills takes measures to synthesize slope protection structure who uses.

Background

The tableland is one of the strategies for comprehensive treatment of loess plateau in new era, and is an important measure for controlling source-tracing erosion and reducing water and soil loss in the loess tableland. Since the implementation is started from the first time of the city rate of Qingyang in 2007, the ecological environment target of tableland reclamation is preliminarily realized by the comprehensive treatment modes of three defense lines, four ecological economic zones and a plurality of elements based on runoff regulation. However, the tableland erosion problem has not been completely controlled and solved, gravity erosion is abnormally active in some regions, source erosion is further aggravated, and agricultural production conditions are increasingly worsened due to water and soil loss (2014). In 12 months in 2018, the national department of water conservancy officials formally returns "fixed-ditch protected tableland" comprehensive treatment plan "in loess plateau gully region, and plans 43 tablelands and 8968 erosion ditches relating to the West mountain area of the board, Zhengning county, Ning county, Zhenyuan county and Heshui county, thereby providing scientific guarantee for comprehensively improving the ecological safety of the gully region of the loess high tableland in the next step. Practice shows that innovative practice of technical methods such as high tableland gully region gully head treatment mode, tableland rainwater resource regulation, configuration and optimized utilization, gully head backfill engineering and the like is urgently needed to be carried out.

The ditch head backfill measures play an important role in controlling the source-tracing erosion of the ditch head, but in the prior practice, the ditch head backfill measures mainly take a simple landfill type, a drainage and landfill type and a drainage, landfill and slope protection type, so that the erosion damage and the hydraulic erosion of the slope surface are effectively relieved. However, the existing slope protection structures for water conservancy construction, road side slope, slope treatment and the like which are mainly used for preventing water and soil loss highlight the engineering safety in the aspects of slope coefficient, soil body compactness and slope stability, but neglect the combination of water-soil-planting effect, ecological slope protection and engineering to a certain extent, considering from the long-term treatment effect, the highland filling project for fixing the ditches is slightly insufficient in the aspect of preventing and controlling source-tracing erosion, and meanwhile, the special occurrence environment and loose structure of loess are needed, and multiple processing measures of the positions of the slope, the slope surface, the contact surface and the like in the ditch head filling measure are comprehensively designed in multiple aspects. Therefore, a comprehensive slope protection structure suitable for ditch head backfill measures is urgently needed to solve the problems of slice erosion, narrow ditch and cut ditch erosion of a backfill slope surface caused by concentrated rainfall and the hydrological and slope stability problems of a contact surface, couple the economic zone and ecological safety of the ditch slope of an erosion key zone, provide engineering technology for effectively slowing down saturation scouring damage of the slope surface and supplement a technical method taking the erosion key zone as a protection system.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ditch head is backfilled and is taken place comprehensive slope protection structure of using to solve the problem that provides in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a ditch head is backfilled and is taken place comprehensive slope protection structure who uses, is including irrigating main part, ecological main part, engineering main part and water and soil separator box. The irrigation main body is connected with a ditch head backfill region water collection gallery or ditch side ridge and a pumping and drainage pipeline; the water pumping and draining pipeline is connected with the water-soil separation box; the water-soil separation tank is connected with the ditch bottom water collecting well and the ditch bottom soil storage pool; the ditch bottom water collecting well is provided with a water pump; the ecological main body mainly comprises a drip irrigation system, slope protection vegetation and improved soil, wherein the drip irrigation system is provided with the improved soil, and the upper end of the improved soil is provided with the slope protection vegetation; the engineering main part mainly comprises arch skeleton concrete slope protection structure, horizontal drainage french drain and inverted filter, the ditch head is backfilled the slope body slope type and is used cascaded as the owner, slope protection vegetation is planted in arch skeleton concrete slope protection structure dead zone, and the cascaded platform of downside sets up horizontal drainage french drain, lays inverted filter in the domatic arch skeleton concrete slope protection structure lower part of last order, the inverted filter lower part sets up horizontal drainage french drain, links to each other with the water and soil separator box.

As a further aspect of the present invention: a water collecting tank, a filter box, a discharging tank and a water pumping and discharging pipe are arranged in the irrigation main body; the water collecting tank is adjacent to the filter tank, the filter tank is provided with a filter screen and an active carbon filter screen, a water inlet, a triangular weir water outlet and a sewage discharge outlet are formed in the water collecting tank, a solenoid valve switch is arranged on the lower portion of the filter tank and connected with the discharge box, a water outlet is formed in the lower right side of the filter tank and connected with a drainage pipe and a drip irrigation system respectively, and the drainage pipe is connected with a drainage pipeline outside a slope body.

As a further aspect of the present invention: the improved soil in the ecological main body is slope improved soil formed by mixing soil and a dimeric material mixed emulsion, the treatment depth is 200-400mm, and the slope protection vegetation is recommended to be alfalfa.

As a further aspect of the present invention: the drip irrigation system is directly connected with a water pumping and draining pipe in the irrigation main body, the water pumping and draining pipe is connected with an external water pumping and draining pipeline and is used as a water draining pipe in a rainy period and a water pumping pipe in a dry period; the pumping and drainage pipeline can pump water to the irrigation main body and irrigate slope vegetation by self-flowing through the drip irrigation system.

As a further aspect of the present invention: the inverted filter layer in the engineering main body is covered with the slope surface of the backfilled slope body, and a fine sand layer (d is 0.25-1.00 mm) of 150mm, a medium sand layer (d is 1.00-5.00 mm) of 150mm and a gravel layer (d is 5.00-20.00 mm) of 200mm are sequentially paved from the slope surface to the outside.

As a further aspect of the present invention: the ditch head soil storage pool is connected with the irrigation main body, silt filtered by the filter box enters the discharge box, slide rails are arranged on the left side and the right side of the lower end of the discharge box, slide blocks are arranged at the upper ends of the slide rails, a weight sensor and a set threshold value can be configured, and the silt is automatically discharged when the set threshold value is exceeded and discharged into the ditch head soil storage pool; the filter box can be automatically washed by clean water or manually disassembled and cleaned.

As a further aspect of the present invention: the water-soil separation tank is connected with the pumping and drainage pipeline and the horizontal drainage blind ditch, rainwater is separated by the water-soil separation tank, then the water enters the ditch bottom water collecting well for cyclic utilization, and silt enters the ditch bottom soil storage tank to be silted up;

as a further aspect of the present invention: the water collecting well at the bottom of the ditch is provided with a water suction pump, the water suction pump can effectively slow down the internal corrosion of a backfilled slope body and improve the stability of the slope by pumping underground water, and can recharge slope vegetation in a drought period to increase the cyclic utilization of water resources, and if a ditch head with a longer extension line is provided with a water collecting well group;

as a further aspect of the present invention: the water suction pump, the electromagnetic valve switch and the water-soil separation box are electrically connected with an external power supply through leads.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses the during operation, surface runoff silt gets into through ditch head backfill zone multistage catchment corridor or ditch limit ridge and irrigates the main part, after irrigating main part prefilter, carries out the secondary water and soil separation through drainage pipe row income ditch bottom water and soil separator box fast, can alleviate the local slope body erosion destruction that the strong great time drainage of rain did not reach and arouse, and the water of separation gets into ditch bottom sump pit with cyclic utilization, and silt gets into and holds the soil reservoir silt ground.

2. When the utility model works, the improved soil can not only ensure the normal growth of the slope vegetation, but also greatly enhance the erosion resistance of the soil body, and the slope vegetation mainly takes alfalfa deep-rooted vegetation as the main material and has better effect on the aspect of preventing water and soil loss;

3. the utility model discloses the during operation, the suction pump draws water through pumping and draining pipeline, carries out the irrigation of flowing automatically to domatic vegetation after irrigating the main part and filtering to prevent to cause the influence to vegetation growth when summer or long-time not raining.

4. The utility model discloses the during operation, the suction pump carries out the drainage through pumping and drainage pipeline, reduces the internal groundwater level of slope to the groundwater level lifting that causes to the highland top irrigation is to the influence of backfill district slope stability.

5. When the utility model works, the inverted filter layer at the lower part of the slope body can effectively counteract the undermining damage of the groundwater hydrodynamic pressure to the inner part of the slope body, and meanwhile, the inverted filter layer is provided with a water outlet and a drainage pipeline, so that the water body enters the water collecting well to be efficiently utilized by water resources; and the functions of the ditch bottom soil storage tank are diversified, and the ditch bottom soil storage tank can be adjusted to be a check dam or a siltation dam according to the topography and the budget of the ditch bottom to lift the erosion standard.

Drawings

Fig. 1 is a structural deployment diagram of a comprehensive slope protection structure for trench backfill measures.

Fig. 2 is a structural view of an irrigation main body in a comprehensive slope protection structure to which a measure for trench head backfilling is applied.

In the figure: the irrigation main body A, the ecological main body B, the engineering main body C, the water-soil separation box D, the water collection box 1, the water outlet 2 of the triangular weir, the electromagnetic valve switch 3, the filter screen 4, the sewage outlet 5, the activated carbon filter screen 6, the filter box 7, the water inlet 8, the discharge box 9, the pumping and drainage pipe 10, the drip irrigation system 11, the slope protection vegetation 12, the improved soil 13, the arch framework concrete slope protection structure 14, the horizontal drainage blind ditch 15, the inverted filter layer 16, the ditch bottom water collection well 17, the water pump 18, the ditch bottom soil storage pool 19, the ditch head soil storage pool 20, the ditch head backfill region water collection gallery or ditch side ridge 21, the distribution box 22, the pumping and drainage pipeline 23 and the silt beating pipeline 24.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, in an embodiment of the present invention, a comprehensive slope protection structure for trench backfill measures includes an irrigation main body a, an ecological main body B, an engineering main body C, and a water-soil separation box D. The upper part of the ditch head backfill slope body is provided with an irrigation main body A, the slope surface is provided with an ecological main body B and an engineering main body C, and the lower part is provided with a water-soil separation box D; the irrigation main body A is connected with a ditch head backfill region water collection gallery or ditch side ridge 21 and a pumping drainage pipeline 23; the pumping and drainage pipeline 23 is connected with the water-soil separation box D; the water and soil separation box D is connected with a ditch bottom water collecting well 17 and a ditch bottom soil storage pool 19; the ditch bottom water collecting well 17 is provided with a water suction pump 18; the ecological main body B mainly comprises a drip irrigation system 11, slope protection vegetation 12 and improved soil 13, wherein the drip irrigation system 11 is provided with the improved soil 13, and the upper end of the improved soil 13 is provided with the slope protection vegetation 12; engineering main part C mainly comprises arch skeleton concrete slope protection structure 14, horizontal drainage french drain 15 and inverted filter 16, the ditch head is backfilled the slope body slope type and is used cascaded as the owner, 14 dead zones of arch skeleton concrete slope protection structure plant slope protection vegetation 12, and the cascaded platform of downside sets up horizontal drainage french drain 15, lays inverted filter 16 in the domatic arch skeleton concrete slope protection structure 14 lower part of last level, 16 lower parts of inverted filter set up horizontal drainage french drain, links to each other with water and soil separator D.

A water collecting tank 1, a filter tank 7, a discharging tank 9 and a water pumping and discharging pipe 10 are arranged in the irrigation main body A; the water collecting tank 1 is adjacent to the filter tank 7, the filter tank 7 is provided with the filter screen 4 and the activated carbon filter screen 6, the water collecting tank 1) is internally provided with the water inlet 8, the triangular weir water outlet 2 and the sewage discharge port 5, the lower part of the filter tank 7 is provided with the electromagnetic valve switch 3, the electromagnetic valve switch 3 is connected with the discharge tank 9, the lower right side of the filter tank is provided with the water outlet and is respectively connected with the drainage pipe 10 and the drip irrigation system 11, and the drainage pipe 10 is connected with the drainage pipeline 23 outside the slope body.

The improved soil 13 in the ecological main body B is slope improved soil formed by mixing soil and a dimeric material mixed emulsion, the treatment depth is 200-400mm, and the slope protection vegetation is recommended to be alfalfa.

The drip irrigation system 11 is directly connected with a water pumping and draining pipe 10 in the irrigation main body A, the water pumping and draining pipe 10 is connected with an external water pumping and draining pipeline 23 and is used as a water draining pipe in a rainy period and a water pumping pipe in a dry period; the pumping and drainage pipeline 23 can pump water to the irrigation main body A, and slope vegetation is irrigated by self-flowing through a drip irrigation system.

The reverse filter layer 16 in the engineering main body C covers the slope surface of the backfilled slope body, and a fine sand layer (d is 0.25-1.00 mm) of 150mm, a medium sand layer (d is 1.00-5.00 mm) of 150mm and a gravel layer (d is 5.00-20.00 mm) of 200mm are sequentially paved from the slope surface to the outside.

The ditch head soil storage pool 20 is connected with the irrigation main body A, silt filtered by the filter box 7 enters the discharge box 9, slide rails are arranged on the left side and the right side of the lower end of the discharge box 9, slide blocks are arranged at the upper ends of the slide rails, a weight sensor and a set threshold value can be configured, and the silt is automatically discharged when the rated threshold value is exceeded and discharged into the ditch head soil storage pool 20; the filter box 7 can be automatically washed by clean water or manually disassembled and cleaned.

The water-soil separation box D is connected with a pumping and drainage pipeline 23 and a horizontal drainage blind ditch 15, rainwater is separated by the water-soil separation box D, then the water enters a ditch bottom water collecting well 17 for recycling, and silt enters a ditch bottom soil storage tank 19 to be silted up;

the water collecting well 17 at the bottom of the ditch is provided with a water suction pump 18, the water suction pump 18 can effectively slow down the internal corrosion of a backfilled slope body and improve the stability of the slope by pumping underground water, and can recharge slope vegetation in a dry period to increase the cyclic utilization of water resources, and if a ditch head with a longer extension line is provided with a water collecting well group;

the water pump 18, the electromagnetic valve switch 3 and the water-soil separation box D are electrically connected with an external power supply through leads.

The irrigation main body consists of a water collecting tank, a filter screen and a pumping system, and is matched with a soil storage pool and mainly used for collecting rainwater and recharging slope vegetation; the ecological main body mainly comprises double-polymer material improved soil, a drip irrigation system and slope protection vegetation, and is used for counteracting rainfall splash erosion, saturated mud flow scouring and soil maintenance; the engineering main body mainly comprises an arch skeleton concrete slope protection structure, horizontal and vertical drainage blind ditches and a sandstone inverted filter layer at the lower part of a slope body, and is used for effectively slowing down erosion of the fine ditches and the cut ditches, dredging surface runoff and reducing lower submerged erosion; the water and soil separation tank is used for separating water and soil from water and sand on the tableland and the slope, water enters the ditch bottom water collecting well, and the sand is discharged into the soil storage tank (conditions allow that a check dam or a siltation dam can be built at the ditch bottom); the ditch bottom sump pit mainly used stores the water through the separation of water and soil separator box, can unite with the pumping system, effectively reduces ground water level, slows down inside corrosion and improves backfill slope stability, and the sump pit can be pumped water to the sump pit in dry season simultaneously and then flows automatically and irrigate domatic vegetation in order to guarantee normal growth.

The utility model discloses a theory of operation is:

the utility model relates to a ditch head backfills comprehensive slope protection structure of taking measures to use, in operation, use ditch head water-collecting area as implementation unit, set gradually ditch head multistage water-collecting corridor or ditch limit ridge 21 in order to regulate and control ditch head water-collecting area runoff comprehensively from top to bottom at the ditch head that has backfilled, surface runoff drains into irrigation subject A in order to tentatively filter the water and sand and store some rainwater, rainwater after filtering is directly drained into ditch bottom water and soil separation case D through pumping and draining pipeline 23 and is carried out the water and soil separation, the water further drains into ditch bottom sump pit 17, silt drains into ditch bottom soil storage pool 19; the slope ecological main body B and the engineering main body C are matched for use, on the basis of intercepting surface runoff fully, on the basis of an arch-shaped framework concrete slope protection structure 14 in the engineering main body C, soil 13 is backfilled and improved in an arch-shaped dead zone, and alfalfa is planted, so that rainfall hydraulic erosion is effectively reduced, and the stability of a slope is ensured; the inverted filter layer 16 arranged on the lower part of the slope can effectively slow down the submerged corrosion of the underground lifting to the interior of the slope body; in drainage projects such as the drainage pipeline 23, the ditch head water collecting gallery 21 and the drainage blind ditch 15, redundant rainwater can be quickly drained into the ditch bottom water collecting well 17 in rainy season, the water body of the ditch bottom water collecting well 17 can be pumped to the irrigation main body A through the water suction pump 18 in dry season, and the water body is filtered by the filter tank 7 and then flows by the dropper system 11 to irrigate the slope vegetation 12, so that the normal growth of the vegetation is ensured. Meanwhile, the risk of instability of the backfill slope body due to reduction of the underground water level can be reduced by pumping water.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A comprehensive slope protection structure for ditch head backfill measures comprises an irrigation main body (A), an ecological main body (B), an engineering main body (C) and a water-soil separation box (D); the method is characterized in that an irrigation main body (A) is arranged at the upper part of a ditch head backfill slope body, an ecological main body (B) and an engineering main body (C) are arranged on the slope surface, and a water-soil separation box (D) is arranged at the lower part of the ditch head backfill slope body; the irrigation main body (A) is connected with a ditch head backfill region water collection gallery or ditch edge ridge (21) and a pumping and drainage pipeline (23); the pumping and drainage pipeline (23) is connected with the water-soil separation box (D); the water-soil separation tank (D) is connected with a ditch bottom water collecting well (17) and a ditch bottom soil storage pool (19); the ditch bottom water collecting well (17) is provided with a water suction pump (18); the ecological main body (B) mainly comprises a drip irrigation system (11), slope protection vegetation (12) and improved soil (13), wherein the drip irrigation system (11) is provided with the improved soil (13), and the upper end of the improved soil (13) is provided with the slope protection vegetation (12); engineering main part (C) mainly comprises arch skeleton concrete slope protection structure (14), horizontal drainage french drain (15) and inverted filter (16), the ditch head is backfilled the slope body slope type and is used cascaded as the owner, arch skeleton concrete slope protection structure (14), slope protection vegetation (12) are planted in the dead zone, and the cascaded platform of downside sets up horizontal drainage french drain (15), lays inverted filter (16) in last one-level domatic arch skeleton concrete slope protection structure (14) lower part, inverted filter (16) lower part sets up horizontal drainage french drain, links to each other with water and soil separator box (D).

2. The comprehensive slope protection structure for ditch backfill measure according to claim 1, characterized in that a water collecting tank (1), a filter tank (7), a discharging tank (9) and a water pumping and discharging pipe (10) are arranged in the irrigation main body (A); the utility model discloses a drip irrigation system, including header tank (1), filter tank (7), filter screen (4) and active carbon filter screen (6) are installed to filter tank (7), header tank (1) inside is equipped with water inlet (8), triangle weir delivery port (2) and drain (5), filter tank (7) lower part is equipped with solenoid valve switch (3), solenoid valve switch (3) link to each other with ejection of compact case (9), the filter tank right side downside is equipped with the delivery port, links to each other with drainage pipe (10) and drip irrigation system (11) respectively, drainage pipe (10) link to each other with slope external drainage pipeline (23).

3. A comprehensive slope protection structure applied by ditch head backfill measures according to claim 1, characterized in that the drip irrigation system (11) is directly connected with a water pumping and draining pipe (10) in an irrigation main body (a), the water pumping and draining pipe (10) is connected with an external water pumping and draining pipeline (23) and is used as a water draining pipe in a rainy period and a water pumping pipe in a dry period; the water body can be pumped to the irrigation main body (A) by the pumping and drainage pipeline (23), and slope vegetation is irrigated by self-flowing through the drip irrigation system.

4. The comprehensive slope protection structure applied by the trench head backfill measure according to claim 1, wherein the reverse filter layer (16) in the engineering main body (C) is covered under the slope surface of the backfill slope body, and a fine sand layer with the thickness of 150mm, a medium sand layer with the thickness of 150mm and a gravel layer with the thickness of 200mm are sequentially paved from the slope surface; the diameter of the fine sand is 0.25-1.00 mm, and the diameter of the medium sand is 1.00-5.00 mm; the diameter of the gravel is 5.00-20.00 mm.

5. The comprehensive slope protection structure for ditch backfill measure according to claim 1, characterized in that the irrigation main body (A) is connected with a ditch soil storage pool (20), silt filtered by a filter box (7) enters a discharge box (9), slide rails are arranged on the left and right sides of the lower end of the discharge box (9), slide blocks are arranged on the upper ends of the slide rails, a weight sensor and a set threshold value can be configured, and when the weight sensor and the set threshold value are exceeded, the silt is automatically discharged and discharged into the ditch soil storage pool (20); the filter box (7) can be automatically washed by clean water or manually disassembled and cleaned.

6. The comprehensive slope protection structure for ditch head backfill measures according to claim 1, wherein the water-soil separation box (D) is connected with a water pumping and draining pipeline (23) and a horizontal drainage blind ditch (15), water enters a ditch bottom water collecting well (17) for recycling after rainwater is separated by the water-soil separation box (D), and silt enters a ditch bottom soil storage pool (19) to be silted up.

7. The comprehensive slope protection structure for ditch backfill measure according to claim 1, wherein the water pump (18), the electromagnetic valve switch (3) and the water-soil separation tank (D) are electrically connected with an external power supply through wires.