Small water taking dam in debris flow gully in rural area

Abstract

The utility model discloses a small water taking dam in a debris flow gully in a rural area, and belongs to the technical field of water taking dam design. Comprising a dam body, dam abutments, an overflow port, a diversion canal and a water filtering reinforcing mesh, the dam body is poured in a mountain ditch with normal running water so as to raise the water level in the ditch, the dam abutments are arranged on the two sides of the top of the dam body respectively, the overflow port is formed between the two dam abutments, and the diversion canal is built on one side in the mountain ditch below the dam body; the diversion canal penetrates into the bottom of the dam body and extends upwards to be communicated with the overflow opening, and a water filtering reinforcing mesh is arranged at the communication position of the diversion canal and the overflow opening. The water taking dam can effectively solve the problem of dam crest overflow caused by siltation behind the dam, plays a role in preventing a water diversion pipe or a water diversion canal from being blocked, prolongs the service life of the water taking dam, reduces the frequency of manual maintenance, and ensures long-term stable production and living water for villagers.

Description

Technical Field

[0001] The utility model relates to a small water intake dam, in particular to a small water intake dam in a debris flow ditch in a rural area, and belongs to the technical field of water intake dam design. Background Art

[0002] Conventional technology: In the vast rural areas of Yunnan, China, a common method to solve the drinking water problem is to build a simple small water intake dam in the mountain gully with constant water flow around the village, raise the water level in the gully, and then use a water pipe or water diversion channel to connect the water to the village for use. This type of water intake dam is mainly suitable for the situation where the vegetation coverage in the gully is good and there are few debris sources in the gully.

[0003] Disadvantages / deficiencies of conventional technologies: The conventional technologies mentioned above have the following disadvantages and deficiencies: In mountainous areas with fragile geological conditions and strong debris flow, gullies with regular water flow are often also debris flow gullies. Due to the small storage capacity, the general water intake dams in rural areas are easily filled with debris carried by debris flow, causing the ditch water to overflow along the dam top and unable to enter the water diversion pipe or water diversion channel, resulting in a decrease in water diversion volume and affecting the villagers' production and living water. At the same time, the pipes or water channels used for water diversion are also easily blocked by the soil and debris carried by the debris flow, causing the water intake dam to fail. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a small water intake dam in a debris flow ditch in a rural area.

[0005] The technical solution adopted by the utility model is: to design a small water intake dam in a debris flow ditch in a rural area, which includes a dam body, a dam shoulder, an overflow port, a water diversion channel and a water filtering steel mesh. The dam body is cast in a ditch with a constant flow of water to raise the water level in the ditch. Dam shoulders are respectively arranged on both sides of the top of the dam body, an overflow port is formed between the two dam shoulders, and a water diversion channel is built on one side of the ditch below the dam body. The water diversion channel penetrates into the bottom of the dam body and extends upward to be connected with the overflow port. A water filtering steel mesh is arranged at the connection between the water diversion channel and the overflow port.

[0006] Furthermore, the small water intake dam described in this design has a dam body constructed of rubble stone and concrete, and the particle size of the rubble stone is controlled to be less than 20 cm.

[0007] Furthermore, the final width of the dam crest of the small water intake dam described in this design is not less than 1m.

[0008] Furthermore, the small water intake dam described in the present design has an L-shaped water diversion channel at the dam body, the cross-section of the water diversion channel is a rectangular cross-section, and the depth and width of the cross-section of the water diversion channel are not less than 30 cm respectively.

[0009] Furthermore, the small water intake dam described in the present design has a water diversion channel which is arranged along the slope of the ravine bank after leaving the dam body until it reaches the destination.

[0010] Furthermore, the small water intake dam described in the present design has a water filtration steel mesh made of HRB400 steel bars with a diameter of 6 to 10 mm. The water filtration steel mesh includes a plurality of transverse steel bars and longitudinal steel bars arranged in an array. The transverse steel bars are spaced 5 cm apart, and the longitudinal steel bars are spaced 10 cm apart.

[0011] Furthermore, in the small water intake dam described in the present design, the water filtration steel mesh is fixed by spot welding, and the length of the longitudinal steel bars embedded in the concrete on both sides of the overflow outlet is not less than 30 cm.

[0012] Furthermore, the small water intake dam described in the present design has an overflow bottom that is inclined, with the water-facing end being higher and the water-discharging end being lower, and the overflow bottom is inclined at 5 to 45°, for example, at 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40° or 45°.

[0013] Furthermore, the small water intake dam described in the present design has a dam body comprising an underground foundation and an exposed surface foundation, wherein the underground foundation is a rectangular body, the exposed surface foundation is a right-angled trapezoidal structure, and the water-facing surface is the inclined surface of the right-angled trapezoidal structure.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model provides an overflow outlet on the dam top, which can constrain the water flow in the overflow outlet, effectively solving the problem of dam top overflow caused by siltation behind the dam. At the same time, the water filter steel mesh arranged longitudinally along the bottom of the overflow outlet can filter out large particles, thereby preventing the water diversion pipe or water diversion channel from being blocked, extending the service life of the water intake dam and reducing the number of manual maintenance times. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model 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 some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic top view of the utility model.

[0018] Figure 2 It is a schematic diagram of the front view of the utility model.

[0019] Figure 3 It is a schematic diagram of a cross section 1 of the utility model (the bottom of the water diversion channel is in a horizontal state).

[0020] Figure 4 This is a schematic diagram of the cross section 2 of the utility model (the bottom of the water diversion channel is in an inclined state).

[0021] In the figure: 1. Dam body; 2. Dam shoulder; 3. Overflow; 4. Water diversion channel; 5. Water filter steel mesh; 6. Buried foundation; 7. Exposed surface foundation. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 an indirect connection 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 the present invention can be understood according to specific circumstances.

[0024] Example 1

[0025] like Figure 1-Figure 4 As shown: a small water intake dam in a debris flow ditch in a rural area, the structure of which includes a dam body 1, a dam shoulder 2, an overflow port 3, a water diversion channel 4 and a water filtering steel mesh 5. The dam body 1 is cast in a mountain ditch with a constant flow of water in a mountainous rural area to raise the water level in the ditch. Dam shoulders 2 are respectively arranged on both sides of the top of the dam body 1, and an overflow port 3 is formed between the two dam shoulders 2. By arranging the overflow port 3 on the dam top, the water flow can be constrained in the overflow port 3, effectively solving the dam top overflow caused by siltation behind the dam. A water diversion channel 4 is built on one side of the ditch below the dam body 1. The water diversion channel 4 runs through the bottom of the dam body 1 and extends upward to communicate with the overflow port 3. A water filtering steel mesh 5 is arranged at the connection between the water diversion channel 4 and the overflow port 3. The 5 pieces of water filtering steel mesh arranged along the bottom of the overflow port 3 can filter out large particles, play a role in preventing the water diversion channel 4 from being blocked, extend the service life of the water intake dam, and reduce the number of manual maintenance.

[0026] It is understandable that the water diversion channel 4 mentioned above can also be replaced by a water diversion pipe.

[0027] Example 2

[0028] This embodiment is based on the embodiment 1, and further optimizes and refines the small water intake dam, specifically:

[0029] The small water intake dam described in this embodiment is constructed of rubble stones and concrete, the particle size of the rubble stones is controlled to be less than 20 cm, and the amount of rubble stones added should be controlled to be no more than 20% of the total volume, so as to ensure the quality of the dam body 1 and enable it to be used stably for a long time.

[0030] Example 3

[0031] This embodiment is based on the embodiment 2, and further optimizes and refines the small water intake dam, specifically:

[0032] The cross-sectional dimensions of the overflow port 3 of the small water intake dam described in this embodiment should be able to meet the flood standard of once in 10 years to ensure its flood resistance, and the final width of the dam top of the dam body 1 should not be less than 1m to ensure its impact resistance.

[0033] Example 4

[0034] This embodiment is based on the embodiment 3, and further optimizes and refines the small water intake dam, specifically:

[0035] The small water intake dam described in this embodiment has a water diversion channel 4 arranged in an L shape at the dam body 1 to guide the water flow from the center of the ravine to the slope on one side of the ravine. The cross-section of the water diversion channel 4 is a rectangular cross-section, and the depth and width of the cross-section of the water diversion channel 4 are not less than 30 cm respectively, to ensure the drainage and water diversion capacity.

[0036] It is understandable that the cross-section of the water diversion channel 4 can also be set to a structure of other shapes, such as a trapezoidal cross-section.

[0037] Example 5

[0038] This embodiment is based on the embodiment 4, and further optimizes and refines the small water intake dam, specifically:

[0039] The small water intake dam described in this embodiment has a water diversion channel 4 that is arranged along the slope of the ravine bank after leaving the dam body 1 until it reaches the destination, away from the center of the ravine to avoid mutual interference and is more convenient for maintenance and use.

[0040] Example 6

[0041] This embodiment is based on the embodiment 5, and further optimizes and refines the small water intake dam, specifically:

[0042] The small water intake dam described in this embodiment is made of HRB400 steel bars with a diameter of 6 to 10 mm. Rusted steel bars are prohibited to ensure service life. The water filter steel mesh 5 includes multiple transverse steel bars and longitudinal steel bars arranged in an array. The transverse steel bars are spaced 5 cm apart, and the longitudinal steel bars are spaced 10 cm apart. The layout is reasonable and can effectively filter large particles while passing water.

[0043] Example 7

[0044] This embodiment is based on the embodiment 6, and further optimizes and refines the small water intake dam, specifically:

[0045] The small water intake dam described in this embodiment has a water filtration steel mesh 5 fixed by spot welding, which is simple to manufacture. The length of the longitudinal steel bars embedded in the concrete on both sides of the overflow port 3 is not less than 30 cm, and the installation is stable and reliable.

[0046] In addition to embedding the water filter steel mesh 5 into the dam body 1, the water filter steel mesh 5 can also be set into a block structure with a certain gravity, such as pouring a circle of concrete around the water filter steel mesh 5, and then setting a sunken step at the connection between the water diversion channel 4 and the overflow port 3, and placing the block water filter steel mesh 5 on the step, so as to facilitate the replacement of the water filter steel mesh 5 after it is damaged.

[0047] Example 8

[0048] This embodiment is based on the embodiment 7, and further optimizes and refines the small water intake dam, specifically:

[0049] The bottom of the overflow port 3 of the small water intake dam described in this embodiment can be arranged horizontally, such as Figure 3 As shown; it can also be tilted, such as Figure 4 As shown, when the overflow port 3 is tilted, the water-facing end is high and the water-discharging end is low, which is convenient for the mud, sand and stones carried by the water flow to be discharged from the overflow port 3, reducing blockage and accumulation. The bottom of the overflow port 3 is tilted at 5 to 45 degrees, which allows the water flow to effectively enter the water diversion channel 4 and facilitates the mud, sand and stones to flow out of the overflow port 3. The overflow port 3 is set to a trumpet-shaped structure with the large end upward. The overflow port 3 can also be set to a trumpet-shaped structure with the large end facing outward (not shown in the drawings), which is not easy to be blocked and is convenient for mud, sand and stones to flow out of the overflow port 3. It can be understood that it can also be set to a combined trumpet-shaped structure with the large end facing upward longitudinally and the large end facing outward horizontally.

[0050] Example 9

[0051] This embodiment is based on the embodiment 8, and further optimizes and refines the small water intake dam, specifically:

[0052] The small water intake dam described in this embodiment has a dam body 1 including an underground foundation 6 and an exposed surface foundation 7. The underground foundation 6 is a rectangular body, the exposed surface foundation 7 is a right-angled trapezoidal structure, and the water-facing surface is an inclined surface of the right-angled trapezoidal structure, so the structure is stable, reliable and durable.

[0053] The construction process of this application is:

[0054] When the grooves on the shoulders 2 on both sides of the intake dam are excavated to the designed position, first cast the dam body 1 with rubble concrete to the predetermined height of the bottom of the overflow port 3, reserve a water diversion channel 4 in the longitudinal axis direction at the bottom of the overflow port 3, make 5 pieces of water filtration steel mesh and fix them on the water diversion channel 4, and finally cast concrete on the shoulders 2 on both sides to form the overflow port 3.

[0055] Construction sequence: excavation of the dam foundation trench → casting of the dam body 1 (reservation of a water diversion channel 4 at the bottom of the overflow port 3) → production and fixation of 5 pieces of water filtration steel mesh → casting to form the overflow port 3.

[0056] In view of the shortcomings existing in conventional technologies, the present water intake dam design can effectively solve the dam top overflow caused by siltation behind the dam, and at the same time prevent the water diversion pipe or water diversion channel 4 from being blocked.

[0057] In addition, in the description of the present utility model, unless otherwise specified, if the terms "multiple", "multiple roots", "multiple groups" are used, they mean two or more than two, and "several", "several roots", "several groups" mean one or more than one. In the description of the present utility model, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like are used to indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, it is only for the convenience of describing the present utility model and simplifying the description, and does 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 cannot be understood as a limitation on the present utility model. In addition, if the terms "first", "second", "third" are used, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0058] The specific implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above implementation modes, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A small water intake dam in a debris flow ditch in a rural area, characterized by: It includes a dam body, dam shoulders, an overflow, a water diversion channel and a water filtering steel mesh. The dam body is cast in a ravine with constant flowing water to raise the water level in the ravine. Dam shoulders are respectively arranged on both sides of the top of the dam body, and an overflow is formed between the two dam shoulders. A water diversion channel is built on one side of the ravine below the dam body. The water diversion channel penetrates into the bottom of the dam body and extends upward to be connected with the overflow. A water filtering steel mesh is arranged at the connection between the water diversion channel and the overflow.

2. A small water intake dam in a debris flow ditch in a rural area according to claim 1, characterized in that: The dam body is cast with rubble stones and concrete, and the particle size of the rubble stones is controlled to be below 20 cm.

3. A small water intake dam in a debris flow ditch in a rural area according to claim 2, characterized in that: The final width of the dam crest of the dam body is not less than 1m.

4. A small water intake dam in a debris flow ditch in a rural area according to claim 3, characterized in that: The water diversion channel is arranged in an L shape at the dam body, and the cross section of the water diversion channel is a rectangular section. The depth and width of the cross section of the water diversion channel are not less than 30 cm respectively.

5. A small water intake dam in a debris flow ditch in a rural area according to claim 4, characterized in that: After the water diversion channel leaves the dam body, it is set along the slope of the ravine bank until it reaches the destination.

6. A small water intake dam in a debris flow ditch in a rural area according to any one of claims 1 to 5, characterized in that: The water filter steel mesh is made of HRB400 steel bars with a diameter of 6 to 10 mm. The water filter steel mesh includes a plurality of transverse steel bars and longitudinal steel bars arranged in an array. The transverse steel bars are spaced 5 cm apart, and the longitudinal steel bars are spaced 10 cm apart.

7. A small water intake dam in a debris flow ditch in a rural area according to claim 6, characterized in that: The water filter steel mesh is fixed by spot welding, and the length of the longitudinal steel bars embedded in the concrete on both sides of the overflow outlet is not less than 30 cm.

8. A small water intake dam in a debris flow ditch in a rural area according to claim 7, characterized in that: The bottom of the overflow port is tilted, with the water-facing end being higher and the water-discharging end being lower. The bottom of the overflow port is tilted at 5 to 45 degrees.

9. A small water intake dam in a debris flow ditch in a rural area according to claim 8, characterized in that: The dam body comprises an underground foundation and an exposed surface foundation, wherein the underground foundation is a rectangular body, the exposed surface foundation is a right-angled trapezoidal structure, and the water-facing surface is an inclined surface of the right-angled trapezoidal structure.

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