CN110777909A - Debris flow prevention and control system - Google Patents
Debris flow prevention and control system Download PDFInfo
- Publication number
- CN110777909A CN110777909A CN201911157147.0A CN201911157147A CN110777909A CN 110777909 A CN110777909 A CN 110777909A CN 201911157147 A CN201911157147 A CN 201911157147A CN 110777909 A CN110777909 A CN 110777909A
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- debris flow
- cover plate
- water
- control system
- debris
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Sewage (AREA)
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Abstract
The invention provides a debris flow control system and a debris flow control method, which can solve the problem that a perforated cover plate is blocked by stones after debris flow water and stone separation, and ensure that a debris flow water and stone separation system can play a role durably and effectively. The invention can realize the effective control of the formation and circulation processes of the debris flow and solve the treatment problem of debris flow ditches with different scales; the separation of soil, stones and water is realized by utilizing the water collecting tank and the water discharging pipe, the hydrodynamic condition of the debris flow is weakened, and the destructive power of the debris flow is reduced. The vibration system of the invention utilizes the kinetic energy of large stones in the debris flow as power, and can continuously and effectively ensure the vibration, thereby avoiding the clogging of the cover plate, enabling the drainage system to play a role stably, and effectively preventing and treating the debris flow.
Description
Technical Field
The invention relates to the field of geological disaster prevention and control, in particular to a debris flow prevention and control system.
Technical Field
In southern areas of China, the valleys are vertical and horizontal, the two banks of the channel are usually severely weathered, the rock mass on the surface layer is broken, and after heavy rainfall, earthquake and the like, the broken rock soil on the surface layer can be stripped off the mountain body, and debris flow occurs in the channel. For example, after the Wenchuan earthquake, the mud-rock flow in the Sichuan area is more and more frequent, and the mud-rock flow causes huge loss to the local area.
The debris flow is a special flood flow carrying a large amount of debris, stones and the like, and has the characteristics of sudden outbreak, violent coming situation and strong destructive power.
The conditions for the formation of a debris flow can be divided into: 1. an abundant water source; 2. abundant loose solid matter; 3. favorable basin shape and longitudinal slope of the ditch bed. Among the factors responsible for the debris flow, hydrodynamic conditions are environmentally variable factors, and loose solid matter and watershed conditions are relatively fixed factors. Therefore, in the process of forming the debris flow, the carried debris can cause the flood flow to have strong scouring capability, erode the channel and draw in more debris, and gradually develop the scale of the debris flow. The debris flow comprises a formation area, a circulation area and a stacking area, and the debris flow prevention project is suitable for the formation area and the circulation area of the debris flow. The hydrodynamic force conditions of the formation area and the circulation area of the debris flow are controlled, and the debris flow disaster can be effectively prevented.
The existing debris flow treatment engineering mainly comprises water interception engineering, storage engineering, drainage engineering, slope protection engineering and the like so as to control the generation and harm of debris flow. The engineering such as water interception is utilized to control surface flood runoff, the hydrodynamic condition is reduced, favorable topographic conditions are needed, and the method is mainly suitable for the treatment of large debris flow ditches. The method is an effective measure for reducing the harm of the debris flow, and comprises the steps of building check houses, check dams, pools, reservoirs or swales for storing the debris flow, so that loose solid substances do not participate in the movement of the debris flow, and utilizing the swales, gullies, wastelands, lakes and marshes or building embankments outside the range of a protection area to introduce the debris flow into a bin with a large enough volume for storage, so that the debris flow is not harmful.
The main problems of the impounding project are large project amount and more using limitation conditions.
The drainage engineering is to utilize the engineering of flood drainage channel and aqueduct to drain the debris flow and control the damage of debris flow. The debris flow has strong invasion capacity and abundant solid substances, so the requirements of the anti-scouring and anti-silting capacities of the drainage groove are high.
Besides engineering measures, by planting plants such as arbors, shrubs, grasses and the like, the functions of retaining rainfall, maintaining water and soil, regulating runoff and the like are fully exerted, so that the aims of preventing and stopping debris flow or reducing the scale of debris flow and lightening the harm degree of debris flow are fulfilled. The biological measures have the characteristics of low investment, capability of improving the natural environment, long time for exerting the effect and incapability of preventing and treating the debris flow disasters in time.
With the development of the technology, a debris flow water-stone separation siphon drainage technology is proposed, which arranges a series of water permeable pipes in the valley of a debris flow forming area or a circulation area, and connects a siphon drainage pipe at the downstream end thereof, when the water surface elevation of rainfall flood reaches the siphon elevation, the water infiltrated into the water permeable pipes is drained into a downstream safety trench through the siphon drainage pipe so as to reduce the hydrodynamic strength of the trench; by applying the method for preventing and controlling the debris flow by the water-stone separation siphon drainage in the ditch, the formation and circulation processes of the debris flow can be effectively controlled, the treatment problems of debris flow ditches of different scales are solved, the prevention and control engineering construction is simple and convenient, and the adaptability is high; siphon drainage becomes full duct flow with the gravity flow, improves drainage efficiency, and the suction effect that the siphon produced can prevent the pipeline siltation, and the reposition of redundant personnel drainage is little to valley hydrological environment influence during high water level.
Subsequently, the scholars propose one set of neotype water stone reposition of redundant personnel system again, and the system mainly comprises slope apron reposition of redundant personnel pond and siphon drain pipe, and water in the drainage valley that water stone reposition of redundant personnel system can be high-efficient quick eliminates super hydrodynamic force condition, and is significant to restraining mud-rock flow and taking place or reduce its scale. However, the punched holes of the punched cover plate are easy to block the cover plate when encountering stones with similar particle sizes and hole diameters, and the diversion system fails over time.
Disclosure of Invention
The invention provides a debris flow prevention and control system and a debris flow prevention and control method, which can solve the problem that stones block a cover plate with holes after debris flow water and stones are separated, and ensure that a debris flow water and stone separation system can play a role durably and effectively.
The technical scheme of the invention is as follows: the utility model provides a mud-rock flow prevention and cure system, including drainage system, vibration system, drainage system includes the catch basin, foraminiferous apron, the drain pipe, dig the catch basin in the mud-rock flow channel, the top of catch basin sets up foraminiferous apron, the one end of drain pipe stretches into inside the catch basin, the mud-rock flow channel safe region outside the catch basin is set up to the other end of drain pipe, vibration system includes the dwang, the fixed axle, the footboard, the supporting shoe, the spring, the fixed axle is fixed at the catch basin antetheca, the dwang is connected with the fixed axle, the supporting shoe is connected to the one end of dwang, the supporting shoe contacts with foraminiferous apron, the footboard is connected to the other end of dwang, the rear end of foraminiferous apron is articulated with the back wall of catch basin, the front end of foramin.
Furthermore, the water collecting tanks are excavated at the positions where the slope rate of the debris flow channels is reduced from large to small, and one or more water collecting tanks are arranged in the same debris flow channel.
Further, the drain pipe set up one or more, the pipe diameter is 200~500 mm.
Furthermore, the depth of the water collecting tank is smaller than the height of a water column corresponding to the local atmospheric pressure of the debris flow generating place.
Further, the inclination angle of the cover plate with the holes and the horizontal plane ranges from 15 degrees to 45 degrees.
Further, the length of the cover plate with the holes is larger than that of the water collecting tank.
Further, the width of the water collecting tank is changed along with the width of the debris flow channel.
Further, one or more springs are arranged.
A method of debris flow control, the method comprising:
(1) investigating and analyzing hydrogeology and engineering geological conditions of the debris flow channel, determining a formation area, a circulation area and a stacking area of the debris flow, arranging a water collecting tank at a position where the slope rate of the formation area or the circulation area of the debris flow is reduced from high to low, determining the length and the width of the water collecting tank according to the topographic characteristics of the debris flow channel, and then determining the allowable valley flow Q without generating the debris flow
1；
(2) Counting the area of the debris flow channel and determining the peak flow Q of the debris flow channel according to meteorological data
2According to Q
p=Q
2-Q
1Determining total flow Q of a drain
pThen, the number of the drainage pipes is obtained according to the flow of the single drainage pipe;
(3) after the debris flow occurs, the debris flow flows through the water collecting tank, part of water and solid particles with the particle size smaller than the aperture of the holed plate enter the water collecting tank, the hydrodynamic condition of the debris flow is weakened, the destructive power of the debris flow is reduced, when the water level of the water collecting tank exceeds the top of the drain pipe, the water pressure difference triggers the drainage action to occur, along with the reduction of the water level of the water collecting tank, the siphoning action occurs, and the suction force of the siphoning action can discharge the silt in the water collecting tank and the water to a safe area;
(4) after solid stones falling off from the perforated cover plate are hit to the pedal, the rotating rod is driven to rotate, the rotating rod drives the supporting block to slide, the supporting block drives the perforated cover plate to move upwards, and the spring is stretched;
(5) after the solid stones roll off the pedal, the spring pulls the cover plate with the holes back to the original position, the process that the solid stones are smashed to the pedal is generated in a circulating and reciprocating mode, the cover plate with the holes vibrates at the same frequency, the vibration of the cover plate with the holes enables solid particles, which are silted on the cover plate with the holes and have the particle size smaller than the hole size of the cover plate with the holes, to slide into the water collecting tank, and the solid particles, which are clamped on the cover plate with the holes and have the particle size larger than the hole size of the cover plate with the holes, pop out;
(6) after the primary debris flow is finished, the cover plate with the holes, the rotating rod and the pedal are repaired, and residual substances in the water collecting tank are cleaned.
The invention has the following advantages:
1. the invention can realize the effective control of the formation and circulation processes of the debris flow and solve the treatment problem of debris flow ditches with different scales; the separation of soil, stones and water is realized by utilizing the water collecting tank and the water discharging pipe, the hydrodynamic condition of the debris flow is weakened, and the destructive power of the debris flow is reduced.
2. The invention can trigger the siphon action after the drain pipe starts to drain water, the siphon action forms full pipe flow, the drainage efficiency is improved, and the siphon action has the function of carrying sediment and dredging.
3. The vibration system of the invention utilizes the kinetic energy of large stones in the debris flow as power, and can continuously and effectively ensure the vibration, thereby avoiding the clogging of the cover plate, enabling the drainage system to play a role stably, and effectively preventing and treating the debris flow.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the present invention when vibration occurs;
FIG. 3 is a top view of the present invention;
in the figure, a debris flow channel 1, a water collecting tank 2, a perforated cover plate 3, a water discharging pipe 4, a rotating rod 5, a fixed shaft 6, a pedal 7, a supporting block 8, solid particles 9 with the particle size smaller than the pore size of the perforated cover plate, solid particles 10 with the particle size larger than the pore size of the perforated cover plate and a spring 11.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that the following examples are only illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Example 1
As shown in fig. 1-3, the present embodiment provides a debris flow prevention system, which comprises a drainage system and a vibration system, wherein the drainage system comprises a water collecting tank 2, a perforated cover plate 3 and a drain pipe 4, the water collecting tank 2 is excavated in a debris flow channel 1, the perforated cover plate 3 is arranged above the water collecting tank 2, one end of the drain pipe 4 extends into the water collecting tank 2, the other end of the drain pipe 3 is arranged in a debris flow channel 1 safety region outside the water collecting tank 2, the vibration system comprises a rotating rod 5, a fixed shaft 6, a pedal 7, a support block 8 and a spring 11, the fixed shaft 6 is fixed on the front wall of the water collecting tank 2, the rotating rod 5 is connected with the fixed shaft 6, one end of the rotating rod 5 is connected with the support block 8, the support block 8 is in contact with the perforated cover plate 3, the other end of the rotating rod 5 is connected with the pedal 7, the rear end of the perforated cover plate 3 is hinged with the rear, the rotating rod 5 and the drain pipe 4 penetrate through the hole of the water collecting tank 2 to keep sealing. The water collecting tanks 2 are excavated at the positions where the slope rate of the debris flow channel 1 is reduced from high to low, and one or more water collecting tanks 2 are arranged in the same debris flow channel 1. The drain pipe 4 set up one or more, the pipe diameter is 200~500 mm. The depth of the water collecting tank 2 is less than the height of the water column corresponding to the local atmospheric pressure of the debris flow generating place. The inclination angle of the perforated cover plate 3 and the horizontal plane ranges from 15 degrees to 45 degrees. The length of the cover plate 3 with the hole is larger than that of the water collecting tank 2. The width of the water collecting tank 2 is changed along with the width of the debris flow channel 1. One or more springs 11 are arranged.
The implementation steps are as follows:
(1) investigating and analyzing hydrogeology and engineering geological conditions of the debris flow channel, determining a formation area, a circulation area and a stacking area of the debris flow, arranging the water collecting tank 2 at the positions where the slope rate of the formation area or the circulation area of the debris flow is reduced from high to low, determining the length and the width of the water collecting tank 2 according to the topographic characteristics of the debris flow channel 1, and then determining the allowable valley flow Q without generating the debris flow
1；
(2) Counting the area of the debris flow channel and determining the peak flow Q of the debris flow channel according to meteorological data
2According to Q
p=Q
2-Q
1Determining the total flow Q of the water discharge pipe 4
pThen, the number of the drainage pipes 4 is obtained according to the flow of the single drainage pipe 4;
(3) after the debris flow occurs, the debris flow flows through the water collecting tank 2, part of water and solid particles 9 with the particle size smaller than the pore diameter of the perforated plate enter the water collecting tank 2, the hydrodynamic condition of the debris flow is weakened, the destructive force of the debris flow is reduced, when the water level of the water collecting tank 2 exceeds the top of the water discharge pipe 4, the water pressure difference triggers the water discharge action to occur, along with the reduction of the water level of the water collecting tank, the siphoning action occurs, and the suction force of the siphoning action can discharge the silt in the water collecting tank to a safe area together with the water;
(4) after solid stones falling from the perforated cover plate 3 are smashed on the pedal 7, the rotating rod 5 is driven to rotate, the rotating rod 5 drives the supporting block 8 to slide, the supporting block 8 drives the perforated cover plate 3 to move upwards, and the spring is stretched by the spring 11;
(5) after the solid stone rolls from the pedal 7, the spring 11 pulls the perforated cover plate 3 back to the original position, the process that the solid stone is smashed to the pedal 7 is cyclically generated, the perforated cover plate 3 generates vibration with the same frequency, the vibration of the perforated cover plate 3 enables the solid particles 9 with the particle size smaller than that of the perforated cover plate, which are silted on the perforated cover plate 3, to slide down and enter the water collecting tank 2, and the solid particles 10 with the particle size larger than that of the perforated cover plate, which are clamped on the perforated cover plate 3, are popped out of the perforated cover plate 3 and roll down to the debris flow channel 1;
(6) after the primary debris flow is finished, the cover plate 3 with the holes, the rotating rod 5 and the pedal 7 are repaired, and residual substances in the water collecting tank are cleaned.
Claims (8)
1. A debris flow prevention and control system is characterized by comprising a drainage system and a vibration system, wherein the drainage system comprises a water collecting tank 2, a cover plate 3 with holes and a drainage pipe 4, dig the catch basin in the mud-rock flow channel, the top of catch basin sets up foraminiferous apron, the one end of drain pipe stretches into inside the catch basin, the mud-rock flow channel safe region of the other end setting outside the catch basin of drain pipe, vibration system includes the dwang, the fixed axle, the footboard, the supporting shoe, a spring, the fixed axle is fixed at the catch basin antetheca, the dwang is connected with the fixed axle, the supporting shoe is connected to the one end of dwang, the supporting shoe contacts with foraminiferous apron, the footboard is connected to the other end of dwang, the rear end of foraminiferous apron is articulated with the back wall of catch basin, the front end of foraminiferous apron passes through spring coupling with the antetheca of.
2. The debris flow control system according to claim 1, wherein the catchment ponds are excavated at positions where the slope rate of the debris flow channel decreases from high to low, and one or more catchment ponds are arranged in the same debris flow channel.
3. The debris flow prevention and treatment system according to claim 1, wherein one or more of the drainage pipes are arranged, and the pipe diameter is 200-500 mm.
4. The debris flow control system according to claim 1, wherein the depth of the sump is less than the height of the water column corresponding to the local atmospheric pressure at the site where the debris flow is generated.
5. A debris flow control system according to claim 1, wherein said perforated cover plate is inclined to the horizontal at an angle in the range of 15 ° to 45 °.
6. A debris flow control system according to claim 1, wherein said perforated cover plate has a length greater than the length of the sump.
7. The debris flow control system according to claim 1, wherein the width of the sump varies with the width of the debris flow channel.
8. A debris flow control system according to claim 1, wherein said spring is provided in one or more pieces.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911157147.0A CN110777909B (en) | 2019-11-22 | 2019-11-22 | Debris flow prevention and control system |
| PCT/CN2019/123197 WO2021097934A1 (en) | 2019-11-22 | 2019-12-05 | Debris flow prevention system |
| ZA2021/10575A ZA202110575B (en) | 2019-11-22 | 2021-12-17 | Debris flow prevention system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911157147.0A CN110777909B (en) | 2019-11-22 | 2019-11-22 | Debris flow prevention and control system |
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| Publication Number | Publication Date |
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| CN110777909A true CN110777909A (en) | 2020-02-11 |
| CN110777909B CN110777909B (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911157147.0A Active CN110777909B (en) | 2019-11-22 | 2019-11-22 | Debris flow prevention and control system |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN110777909B (en) |
| WO (1) | WO2021097934A1 (en) |
| ZA (1) | ZA202110575B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111764352A (en) * | 2020-07-14 | 2020-10-13 | 嘉兴金喜莱科技有限公司 | Dissipation structure for preventing and treating debris flow in bridge engineering and design method |
| CN112813922A (en) * | 2021-01-06 | 2021-05-18 | 西南科技大学 | Active-passive debris flow water-stone separation-energy dissipation disaster reduction device |
| CN113323140A (en) * | 2021-07-14 | 2021-08-31 | 西南石油大学 | Mountain area building high-position landslide prevention debris flow burying structure and application method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113502786A (en) * | 2021-07-27 | 2021-10-15 | 枣庄学院 | Abrasion-resistant structure of debris flow drainage groove |
| CN113951059A (en) * | 2021-11-17 | 2022-01-21 | 江西农业大学 | Vegetation bank protection soil and water conservation device |
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-
2021
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111764352A (en) * | 2020-07-14 | 2020-10-13 | 嘉兴金喜莱科技有限公司 | Dissipation structure for preventing and treating debris flow in bridge engineering and design method |
| CN111764352B (en) * | 2020-07-14 | 2021-12-07 | 嘉兴市环泰工程技术有限公司 | Dissipation structure for preventing and treating debris flow in bridge engineering and design method |
| CN112813922A (en) * | 2021-01-06 | 2021-05-18 | 西南科技大学 | Active-passive debris flow water-stone separation-energy dissipation disaster reduction device |
| CN112813922B (en) * | 2021-01-06 | 2022-05-17 | 西南科技大学 | Active-passive debris flow water-stone separation-energy dissipation disaster reduction device |
| CN113323140A (en) * | 2021-07-14 | 2021-08-31 | 西南石油大学 | Mountain area building high-position landslide prevention debris flow burying structure and application method thereof |
| CN113323140B (en) * | 2021-07-14 | 2022-03-01 | 西南石油大学 | Mountain area building high-position landslide prevention debris flow burying structure and application method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021097934A1 (en) | 2021-05-27 |
| ZA202110575B (en) | 2022-04-28 |
| CN110777909B (en) | 2021-03-23 |
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