A device for treating sediment in mountainous areas

Abstract

The present invention relates to the technical field of water conservancy engineering, and discloses a mountain sediment treatment device, which includes a cage body, a pipe body, a seepage well, a first dam body, a reservoir, and a second dam body. By arranging a cage body filled with stones at the upstream position of the channel, the flow rate of the mud flow in the channel can be reduced, and the scouring of the channel surface by the mud flow can be slowed down. At the same time, the mud flow can be filtered, and most of the mud in the mud flow can be intercepted upstream of the channel, so as to achieve the effect of solidifying the mud upstream of the channel. The present application has excellent sand interception capacity, which can greatly reduce the sedimentation of the downstream channel, and at the same time, the water upstream of the channel can be filtered and recycled, thereby improving the utilization rate of water resources; it solves the problem that the method of using silt dam to intercept sand in the prior art cannot solidify the mud upstream of the channel in time, and avoids the problem of difficult early growth of vegetation, low survival rate and low sand interception capacity in the method of afforestation in the northwest region.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy engineering, and in particular relates to a sediment treatment device in mountainous areas. Background Art

[0002] Soil erosion is a global symptom of environmental damage and land degradation. Many rivers in my country, especially those in the north, originate from or flow through loess regions, where there is little vegetation cover, frequent rainstorms during the flood season, and serious soil erosion. The sand content of rivers is very high, and the sedimentation of rivers is very serious, making the work of sediment management in my country extremely complicated.

[0003] The large-scale water and soil conservation projects carried out in the Loess Plateau in recent decades have significantly changed the underlying surface conditions of the basin and the water and sediment processes of the basin system. The sedimentation has been reduced by adopting effective measures such as silt dams, beach sand, terraces and orchards, water conservation forests, closed-mountain afforestation, and grassland planting.

[0004] At present, the sediment control in river basin channels mostly adopts the method of silt dam to intercept sediment. Since silt dam is usually set in the middle reaches of river basin channels, and sediment comes from the upper reaches of river basin channels, the method of silt dam to intercept sediment has the problem of not being able to solidify the sediment in the upper reaches of river basin channels in time. If the method of afforestation is adopted to intercept sediment, due to the drought and little rainfall in Northwest China, there will be problems of difficulty in vegetation growth, low survival rate and low sediment interception capacity in the early stage of afforestation. Summary of the invention

[0005] The purpose of the present invention is to provide a mountain sediment treatment device to solve the problem that the sediment in the upper reaches of the basin cannot be solidified in time when the sediment is blocked by silt dams in the above-mentioned prior art, and the problem that the vegetation has difficulty in early growth, low survival rate, and low sediment blocking capacity when afforestation is used to block sediment in the northwest region.

[0006] In order to solve the above technical problems, the specific technical solutions of the present invention are as follows:

[0007] In some embodiments of the present application, a mountain sediment treatment device is provided, comprising:

[0008] A cage body, the cage body is arranged on the surface layer at the upstream position of the channel, and a plurality of stones are arranged in the cage body;

[0009] Pipe bodies, a plurality of said pipe bodies are arranged at intervals in the soil body at the upstream position of said channel, and said pipe bodies are all extended toward the downstream direction of said channel;

[0010] Seepage wells, wherein a plurality of the seepage wells are arranged between the pipe body and the cage body, and the two ends of the seepage wells are respectively connected with the cage body and the pipe body;

[0011] A first dam body, the first dam body is arranged at one end of the cage body close to the downstream of the channel;

[0012] A water reservoir, the water reservoir is arranged at one end of the pipe body close to the downstream of the channel, and the water reservoir is located on one side of the first dam body close to the downstream of the channel;

[0013] A second dam body is disposed at one end of the reservoir close to the downstream of the channel.

[0014] Preferably, in the preferred embodiment of the above-mentioned mountain sediment treatment device, the infiltration wells all include a well body and a filter structure arranged in the well body, and both ends of the well body are respectively connected to the cage body and the pipe body.

[0015] Preferably, in the preferred embodiment of the above-mentioned mountain sediment treatment device, the anti-filtration structure includes anti-filtration layer one, anti-filtration layer two and anti-filtration layer three, the anti-filtration layer one is arranged at the upper part of the well body, the anti-filtration layer three is arranged at the bottom of the well body, and the anti-filtration layer two is arranged between the anti-filtration layer one and the anti-filtration layer three.

[0016] Preferably, in the preferred embodiment of the above-mentioned mountain sediment treatment device, the first filter layer is composed of a plurality of fine-grained gravels, the second filter layer is composed of a plurality of medium-grained gravels, and the third filter layer is composed of a plurality of coarse-grained gravels.

[0017] Preferably, in the preferred embodiment of the above-mentioned mountain sediment treatment device, the first dam body is built by a plurality of the cage bodies with stones inside.

[0018] Preferably, in the preferred embodiment of the above-mentioned mountain sediment treatment device, it also includes a filter layer, and the filter layer is arranged on the first dam body.

[0019] Preferably, in the preferred embodiment of the above-mentioned mountain sediment treatment device, the filter layer is a geomembrane that is permeable to water but impermeable to sand.

[0020] Preferably, in the preferred embodiment of the above-mentioned mountain sediment treatment device, it also includes an impermeable layer, and the impermeable layer is provided at the inner bottom of the water reservoir.

[0021] Preferably, in the preferred embodiment of the above-mentioned mountain sediment treatment device, the impermeable layer is an impermeable geotextile.

[0022] Preferably, in the preferred embodiment of the above-mentioned mountain sediment treatment device, the second dam body is a water-impermeable structure.

[0023] It can be seen from the above technical solution that, compared with the prior art, the beneficial effects of the present invention are:

[0024] (1) By setting a cage filled with stones at the upstream position of the channel, the flow rate of the mud flow in the channel can be reduced, the erosion of the mud flow on the channel surface can be slowed down, and the mud flow can be filtered at the same time, and most of the mud in the mud flow can be intercepted upstream of the channel, thus achieving the effect of solidifying the mud upstream of the channel.

[0025] (2) The infiltration wells and the first dam body can both play a secondary filtering role on the mud flow, which can further reduce the sediment content in the mud flow.

[0026] (3) The filtered water can be stored in the reservoir, which can be used for local irrigation and early growth of vegetation for afforestation. The second dam body is used to increase the water storage capacity of the reservoir.

[0027] (4) The present application has a simple structure, is easy to construct and operate, and has excellent sand-trapping capacity. It can greatly reduce the sedimentation in the downstream channel. At the same time, it can filter the water from the upstream of the channel and recycle it for reuse, thereby improving the utilization rate of water resources. It solves the problem that the sediment-trapping method of the prior art using silt dams cannot solidify the sediment upstream of the channel in time, and also avoids the problems of difficulty in early growth of vegetation, low survival rate and low sand-trapping capacity in the afforestation method used in the northwest region. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0029] Figure 1 A schematic diagram of a longitudinal cross-sectional structure of a mountain sediment treatment device provided by an embodiment of the present invention;

[0030] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0031] Figure 3 A schematic diagram of the internal structure of a seepage well provided in an embodiment of the present invention;

[0032] Figure 4 A schematic diagram of the transverse structure of a first dam body provided in an embodiment of the present invention;

[0033] Figure 5 for Figure 1 A partial enlarged view of B in the middle;

[0034] Figure 6 for Figure 1 A partial enlarged view of C in the middle.

[0035] In the figure:

[0036] 1. Cage body; 2. Stones; 3. Tube body; 31. Through hole; 32. Barrier component; 4. Seepage well; 41. Well body; 42. Filter structure; 421. Filter layer one; 422. Filter layer two; 423. Filter layer three; 5. First dam body; 511. Filter layer four; 6. Reservoir; 61. Impermeable layer; 7. Second dam body. DETAILED DESCRIPTION

[0037] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0038] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0039] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0040] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0042] See also Figure 1-2 As shown, according to some embodiments of the present application, a mountain sediment processing device includes:

[0043] A cage 1 is arranged on the surface of the upstream position of the channel, and a plurality of stones 2 are arranged in the cage 1;

[0044] Pipe bodies 3, a plurality of pipe bodies 3 are arranged in the soil at the upstream position of the channel, and the pipe bodies 3 are all extended toward the downstream direction of the channel;

[0045] Seepage wells 4, a plurality of seepage wells 4 are arranged between the pipe body 3 and the cage body 1, and both ends of the seepage wells 4 are connected to the cage body 1 and the pipe body 3 respectively;

[0046] A first dam body 5, which is arranged at one end of the cage body 1 close to the downstream of the channel;

[0047] A water reservoir 6, which is arranged at one end of the pipe body 3 close to the downstream of the channel, and the water reservoir 6 is located on one side of the first dam body 5 close to the downstream of the channel;

[0048] The second dam body 7 is arranged at one end of the reservoir 6 close to the downstream of the channel.

[0049] Specifically, the cage body 1 is fixedly connected to the surface layer upstream of the channel. The cage body 1 can be a wire cage with a height of 0.5 m and a width the same as that of the surface layer upstream of the channel.

[0050] Specifically, the stones 2 in the cage 1 are coarse-grained stones with different particle sizes; the stones 2 fill the inner space of the cage 1, and there are gaps between the stones.

[0051] Specifically, the pipe body 3 may be a PE pipe, which has a certain drainage slope in the arrangement direction.

[0052] Specifically, the seepage well 4 includes a well body 41 and a filter structure 42 disposed in the well body 41 . Both ends of the well body 41 are connected to the cage body 1 and the pipe body 3 , respectively.

[0053] The working principle of the above technical solution is: first, the mud flow in the upstream of the channel flows through the cage body 1, and the mud flow is buffered, dissipated and filtered by the stones 2 in the cage body 1, and then a part of the mud flow flows into the infiltration well 4, and the infiltration well 4 can perform secondary filtration on this part of the mud flow, and the water flow after the secondary filtration flows into the pipe body 3, and then is transported to the water reservoir 6 under the action of gravity; the mud flow that does not flow into the infiltration well 4 will flow through the first dam body 5, and the first dam body 5 has strong water permeability, and can also filter this part of the mud flow, and the filtered water flow flows into the water reservoir 6; the second dam body 7 is a waterproof structure, which can block the water in the water reservoir 6; when the amount of water in the water reservoir 6 is large or a large flood occurs, the water flow can flow through the top of the second dam body 7.

[0054] Through the above technical scheme, the technical effect that can be achieved by the present application is: by setting a cage body 1 filled with stones 2 at the upstream position of the channel, the flow rate of the mud flow in the channel can be reduced, the scouring of the channel surface by the mud flow is slowed down, and the mud flow can be filtered at the same time, most of the mud in the mud flow is intercepted upstream of the channel, and the mud upstream of the channel is solidified; the infiltration well 4 and the first dam body 5 can both play a secondary filtration role on the mud flow, which can further reduce the mud content in the mud flow; the water reservoir 6 can store the filtered water, which can be used as local irrigation water and vegetation growth in the early stage of afforestation; the second dam body 7 is set to increase the water storage capacity of the water reservoir 6. The present application has a simple structure, is conducive to construction operation, has excellent sand-trapping capacity, can greatly reduce the siltation of downstream ditches, and can filter the water from the upstream of the ditches for recycling and reuse, thereby improving the utilization rate of water resources; it solves the problem that the sand-trapping method of the prior art using silt dams cannot solidify the sand upstream of the ditches in time, and also avoids the problems of difficulty in early growth of vegetation, low survival rate and low sand-trapping capacity in the afforestation method used in the northwest region.

[0055] Continue reading Figure 2 As shown, in a preferred embodiment of the present application, the seepage wells 4 include a well body 41 and a filter structure 42 disposed in the well body 41 , and both ends of the well body 41 are respectively connected to the cage body 1 and the pipe body 3 .

[0056] Specifically, the well body 41 can be made of a PVC pipe with greater rigidity, the diameter of the PVC pipe is 0.5m and the length is 1.5m; after drilling with a drilling rig, the PVC pipe is vertically inserted, and the bottom surface of the PVC pipe is connected to the top surface of the pipe body 3 to form the well body 41; then, the anti-filtration structure 42 is filled inside the well body 41 to form the seepage well 4.

[0057] The adoption of the above technical solution can ensure the stability of the overall structure of the seepage well 4 and can achieve the effect of secondary filtration of the mud flow.

[0058] See also Figure 1 As shown, in a preferred embodiment of the present application, the infiltration wells 4 on the same pipe body 3 are arranged in a manner such that the closer to the first dam body 5 the closer the infiltration wells 4 are to the first dam body 5 , the denser the arrangement of the infiltration wells 4 is.

[0059] By adopting the above technical solution, more mud can flow into the infiltration well 4 , thereby effectively reducing the scouring of the first dam body 5 by the mud.

[0060] See also Figure 3As shown, in a preferred embodiment of the present application, the filter structure 42 includes a filter layer 1 421, a filter layer 2 422 and a filter layer 3 423. The filter layer 1 421 is arranged at the upper part of the well body 41, the filter layer 3 423 is arranged at the bottom of the well body 41, and the filter layer 2 422 is arranged between the filter layer 1 421 and the filter layer 3 423.

[0061] Specifically, the first filter layer 421 is composed of a plurality of fine-grained gravels, the second filter layer 422 is composed of a plurality of medium-grained gravels, and the third filter layer 423 is composed of a plurality of coarse-grained gravels.

[0062] By adopting the above technical solution, the mud flow into the infiltration well 4 can be filtered, and at the same time, pipe bursts and soil flow can be prevented from occurring at the cage body 1 on the surface of the upstream channel.

[0063] See also Figure 2 As shown, in a preferred embodiment of the present application, a water flow structure is provided at the connection between the bottom surface of each well body 41 and the top surface of the tube body 3. The water flow structure is arranged on the top surface of the tube body 3, and the water flow structure is located within the range surrounded by the well body 41.

[0064] Specifically, the water-passing structure includes a plurality of through holes 31 arranged on the top surface of the tube body 3 and a blocking component 32 fixedly covering the through holes 31 .

[0065] Specifically, the barrier component 32 may be a permeable geotextile.

[0066] By adopting the above technical solution, the water flow filtered by the infiltration well 4 can be discharged into the pipe body 3, and at the same time, the anti-filtration structure 42 in the well body 41 can be prevented from falling into the pipe body 3 and causing blockage inside the pipe body 3.

[0067] Continue to refer to Figure 1 , Figure 4 As shown, in a preferred embodiment of the present application, the first dam body 5 is constructed by masonry of a plurality of cage bodies 1 with stones 2 inside.

[0068] Specifically, the length direction of the cage body 1 is the same as the length direction of the channel, and the cross-section of the cage body 1 in the length direction is a right-angled trapezoid, and the length of its bottom side is greater than the length of the top side, that is, each cage body 1 has two upper and lower horizontal planes, three of the four side surfaces are vertical planes, and one is an inclined surface; a masonry unit is formed by bringing the vertical surfaces opposite to the inclined surfaces in the two cage bodies 1 close to each other, that is, the cross-section of the masonry unit in the length direction is an isosceles trapezoid; the number and length of the masonry units from the lowest layer to the highest layer of the first dam body 5 decrease successively, so that the water-facing surface and the water-retaining surface of the first dam body 5 both form an inclined plane structure, and the other two opposite side surfaces of the first dam body 5 both form a continuous step structure.

[0069] By adopting the above technical solution, the first dam body 5 can have stronger structural stability and also stronger water-passing capacity; when a large flood occurs, the top of the first dam body 5 can also pass the flow.

[0070] Continue to refer to Figure 1 , Figure 5 As shown, in a preferred embodiment of the present application, it also includes a filter layer four 511, and the filter layer four 511 is arranged on the first dam body 5.

[0071] Specifically, the filter layer 511 is a geomembrane that is permeable to water but impermeable to sand.

[0072] Specifically, the filter layer 4 511 can be set in the middle of the masonry unit, and the filter layer 4 511 is arranged along the cross section of the first dam body 5.

[0073] The above technical solution can further improve the filtering effect of the first dam body 5 on mud flow, and at the same time can play a certain protective role on the geomembrane, thereby increasing the service life of the geomembrane.

[0074] Continue to refer to Figure 1 , Figure 6 As shown, in a preferred embodiment of the present application, it also includes an impermeable layer 61, and the inner bottom of the water reservoir 6 is provided with an impermeable layer 61.

[0075] Specifically, the impermeable layer 61 is an impermeable geotextile.

[0076] The adoption of the above technical solution can effectively prevent water inside the water reservoir 6 from seeping in, thereby further improving the water storage capacity of the water reservoir 6.

[0077] Reference Figure 1 As shown, in a preferred embodiment of the present application, the second dam body 7 is a water-impermeable structure.

[0078] Specifically, the second dam body 7 is made of rammed clay, the top surface of the second dam body 7 has a certain drainage slope, and its top surface is inclined downward toward the downstream direction of the channel; the longitudinal section of the second dam body 7 is an isosceles trapezoidal structure, and the length of its bottom side is greater than the length of the top side, so that the water-facing surface and the water-retaining surface of the second dam body 7 both form an inclined plane structure.

[0079] The adoption of the above technical solution can ensure that the second dam body 7 has strong structural stability and impermeable properties, and can play a good blocking role for the water in the reservoir 6; at the same time, when the amount of water in the reservoir 6 is large or a large flood occurs, it can flow through the top surface of the second dam body 7.

[0080] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0081] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for treating sediment in mountainous areas, characterized in that: include: A cage body, the cage body is arranged on the surface layer at the upstream position of the channel, and a plurality of stones are arranged in the cage body; Pipe bodies, a plurality of said pipe bodies are arranged at intervals in the soil body at the upstream position of said channel, and said pipe bodies are all extended toward the downstream direction of said channel; Seepage wells, wherein a plurality of the seepage wells are arranged between the pipe body and the cage body, and the two ends of the seepage wells are respectively connected with the cage body and the pipe body; A first dam body, the first dam body is arranged at one end of the cage body close to the downstream of the channel; A water reservoir, the water reservoir is arranged at one end of the pipe body close to the downstream of the channel, and the water reservoir is located on one side of the first dam body close to the downstream of the channel; an impermeable layer is arranged at the inner bottom of the water reservoir; A second dam body, the second dam body is arranged at one end of the reservoir close to the downstream end of the channel; The seepage wells all include a well body and an anti-filtration structure arranged in the well body, and the two ends of the well body are respectively connected to the cage body and the pipe body; The anti-filtration structure includes an anti-filtration layer 1, an anti-filtration layer 2 and an anti-filtration layer 3, wherein the anti-filtration layer 1 is arranged at the upper part of the well body, the anti-filtration layer 3 is arranged at the bottom of the well body, and the anti-filtration layer 2 is arranged between the anti-filtration layer 1 and the anti-filtration layer 3; The first filter layer is composed of a plurality of fine-grained gravels, the second filter layer is composed of a plurality of medium-grained gravels, and the third filter layer is composed of a plurality of coarse-grained gravels.

2. A mountainous area sediment treatment device according to claim 1, characterized in that: The first dam body is built by a plurality of cage bodies with stones inside.

3. A mountainous area sediment treatment device according to claim 2, characterized in that: It also includes a filter layer four, which is arranged on the first dam body.

4. A mountainous area sediment treatment device according to claim 3, characterized in that: The inverted filter layer 4 is a geomembrane that is permeable to water but not to sand.

5. A mountainous area sediment treatment device according to claim 1, characterized in that: The impermeable layer is an impermeable geotextile.

6. A mountainous area sediment treatment device according to claim 1, characterized in that: The second dam body is a watertight structure.

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