Water diversion desilting and sand washing structure

Abstract

The utility model provides a water diversion desilting and sand washing structure. The water diversion desilting and sand washing structure comprises a water diversion channel arranged on one side of a river channel. The side, close to the river channel, of the diversion channel is provided with a diversion channel side weir, and the side, away from the river channel, of the diversion channel is provided with a diversion channel revetment; the upstream end of the water diversion channel is provided with a river retaining hub building, and the river retaining hub building comprises a water diversion channel inlet sand blocking ridge, a pneumatic steel dam and a river retaining overflow dam which are sequentially arranged side by side. A water inlet gate is arranged at the downstream end of the water diversion channel, a water inlet gate sand blocking ridge is arranged on the upstream of the water inlet gate, and a sand flushing gate is arranged between the water inlet gate sand blocking ridge and the tail end of the water diversion channel side weir. According to the utility model, an innovative system of'two-stage desilting, three-dimensional sand washing and dynamic regulation and control 'is adopted, and the technical problems of water diversion, sand washing, flood discharge and the like of a hub are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water conservancy engineering technical field especially is related to a water diversion desilting and sand washing structure. BACKGROUND

[0002] The existing river barrage, water diversion hub is serious in flood season operation period siltation problem;Flood season river water sand content is big, does not do desilting when water diversion, directly introduces downstream trunk, can cause siltation downstream channel, pipeline. Some water diversion projects pass through simple sand dam, sand washing gate etc. technology, can not better solve flood season siltation problem.

[0003] The information disclosed in this BACKGROUND section is only for the purpose of enhancing the understanding of the background of the present utility model, and should not be treated as acknowledging that this information forms a prior art that is already known to those skilled in the art. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a water diversion desilting and sand washing structure to solve the technical problems existing in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The utility model provides a water diversion desilting and sand washing structure, it includes the water diversion channel of setting in the one side of river course;Water diversion channel is close to the one side of river course and is provided with water diversion channel side weir, water diversion channel is away from the one side of river course and is provided with water diversion channel revetment;The upstream end of water diversion channel is provided with river barrage hub building, and the river barrage hub building includes water diversion channel import sand dam, pneumatic steel dam, river overflow dam that sets successively side by side;The downstream end of water diversion channel is provided with water intake gate, and the upstream of water intake gate is provided with water intake gate sand dam, and the water intake gate sand dam and the tail end between water diversion channel side weir are provided with sand washing gate.

[0007] Preferably, the pneumatic steel dam and the river overflow dam are arranged in the main stream of the river course in a straight line shape;The water diversion channel import sand dam is arranged at the water inlet of the water diversion channel.

[0008] Preferably, the angle between the water inlet of the water diversion channel and the pneumatic steel dam is 20 to 30 degrees.

[0009] Preferably, the river side of the water diversion channel side weir is provided with three steps, and strip and block-shaped rocks are arranged on the steps alternately, and a revetment is arranged at the back side of the steps, and the revetment is arranged in a meandering shape along the water flow.

[0010] Preferably, the water diversion channel side weir is provided with a water diversion channel light strip respectively.

[0011] Preferably, the downstream of the water intake gate is connected with a stilling basin section.

[0012] Preferably, the water intake gate is provided with an ecological gate side by side.

[0013] Preferably, the downstream of the sand flushing gate is connected with a sea flat section.

[0014] Preferably, the included angle between the sand flushing gate and the water intake gate is 50° to 70°.

[0015] With the technical scheme, the utility model has the following beneficial effects:

[0016] The utility model discloses a "two-stage sand setting + three-dimensional sand flushing + dynamic control" innovative system, which solves the technical problems of hub water diversion, sand flushing and flood discharge.

[0017] The water diversion channel is used as a sand setting tank while diverting water, and the sand flushing gate at the end of the water diversion channel is used for sand flushing by discharging and regulating the water flow; the river blocking hub and the side weir of the water diversion channel are provided with light strips to increase the brightening landscape of the project.

[0018] The utility model discloses a "two-stage sand setting + three-dimensional sand flushing + dynamic control" innovative system, which solves the technical problems of hub water diversion, sand flushing and flood discharge. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the specific embodiment or prior art of the utility model, the following will briefly introduce the drawings needed to be used in the specific embodiment or prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor.

[0020] Figure 1 The utility model provides the main view of the water diversion sand setting and sand flushing structure. DETAILED DESCRIPTION

[0021] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, and obviously, the described embodiments are some embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] The specific embodiments of the utility model will be described in detail in combination with the drawings. It should be understood that the specific embodiments described here are only used for illustrating and explaining the utility model, and are not used for limiting the utility model.

[0023] In combination withFigure 1 The utility model provides a water diversion sand setting and sand washing structure, which comprises a water diversion channel 5 arranged on one side of a river channel; a water diversion channel side weir 7 is arranged on the side of the water diversion channel 5 close to the river channel; a water diversion channel revetment 6 is arranged on the side of the water diversion channel 5 far from the river channel; a river blocking hub building is arranged at the upstream end of the water diversion channel 5 (close to the upstream regulation section 1); the river blocking hub building comprises a water diversion channel inlet sand trap 2, a pneumatic steel dam 3 and a river blocking overflow dam 4 arranged side by side in sequence; a water intake gate 10 is arranged at the downstream end of the water diversion channel 5 (close to the downstream regulation section 13); a water intake gate sand trap 9 is arranged upstream of the water intake gate 10; and a sand washing gate 12 is arranged between the water intake gate sand trap 9 and the end of the water diversion channel side weir 7.

[0024] Specifically, in the embodiment, the water diversion channel is arranged on the left bank of the river blocking hub; the first-stage sand setting is mainly realized by the river blocking hub building; the design adopts a combination of the water diversion channel inlet sand trap 2, the pneumatic steel dam 3 and the river blocking overflow dam 4, and the flood discharge and sand washing are realized by regulating and controlling the pneumatic steel dam 3. After the preliminary sedimentation of the sediment by the river blocking hub, the sediment is discharged to the downstream river channel by lifting the pneumatic steel dam 3.

[0025] The water intake gate 10 (water diversion gate) is arranged at the end of the water diversion channel 5; the second-stage sand setting is mainly realized by the 240m-long water diversion channel 5. The second-stage sand setting adopts a combination of the water diversion channel 5 sand setting, the water intake gate sand trap 9, the sand washing gate 12 and the water diversion channel side weir 7 overflow. The water diversion channel 5 functions as a sand setting pool while diverting water, and the overflow of the water diversion channel side weir 7 on the right bank is discharged by regulating and controlling the sand washing gate 12 at the end of the water diversion channel. After the sediment is deposited in the water diversion channel 5, the sediment is discharged to the downstream river channel by opening and closing the sand washing gate.

[0026] In the embodiment, preferably, the pneumatic steel dam 3 and the river blocking overflow dam 4 are arranged in a “straight line” on the main stream of the river channel; and the water diversion channel inlet sand trap 2 is arranged at the water inlet of the water diversion channel 5.

[0027] In the embodiment, preferably, the pneumatic steel dam 3 is 20m long and 1m high, and comprises four groups of shield plates, each group of shield plate is 4960mm long, and the shield plate is 16mm thick. The pneumatic steel dam 3 is composed of a bottom plate, a side wall, a shield plate, an air bag (an upper pressing plate, a foundation soft connection and a lower base plate) and a limiting belt. The bottom plate and the side wall are integrally cast by reinforced concrete. The upper pressing plate, the foundation soft connection and the lower base plate function to fix the air bag, and the lifting and falling range of the pneumatic steel dam 3 is controlled by the limiting belt. The pneumatic steel dam 3 is opened and closed by charging and discharging air in the air bag, the working pressure of the air bag can reach about 60Kpa, and the charging and discharging of the air bag is completed by a charging and discharging device in a control room, the charging and discharging device and the air bag are connected through a charging and discharging pipe, and the charging and discharging pipe needs to be discharged into a charging and discharging groove. The power supply of the charging and discharging device is three-phase five-wire system, AC380V, and the control room is additionally provided with a grounding system. The control mode of the charging and discharging device includes automatic control and manual control, and the charging and discharging device can be manually discharged and discharged in the case of power failure and emergency.

[0028] In this embodiment, preferably, the angle between the water inlet of the diversion channel 5 and the pneumatic steel dam 3 is 20° to 30°. Preferably, the angle between the water inlet of the diversion channel and the pneumatic steel dam is 23°, and a sand baffle is arranged, the sand baffle is 30 m long, the dam top is 0.8 m wide, the total height is 2.5 m, the height above the ground is 0.5 m, and the dam body is a concrete ladder structure. A 15 m long and 0.5 m thick reinforced concrete cover is arranged on the upstream of the dam, a 4.0 m deep and 0.5 m wide cast-in-place concrete anti-scour wall is arranged in front of the upstream cover, a 2 m thick gabion stone mattress is horizontally arranged in the range of 35 m upstream of the wall, and the diversion channel is connected downstream.

[0029] In this embodiment, preferably, the river overflow dam 4 is in southeast-northwest direction, the dam length is 60 m, the dam top width is 0.5 m, the total height is 3.0 m, the height above the ground is 1.2 m, and the dam body is a concrete ladder structure. A 15 m long and 0.5 m thick reinforced concrete cover is arranged on the upstream of the dam, a 4.0 m deep and 0.5 m wide cast-in-place concrete anti-scour wall is arranged in front of the upstream cover, a 2 m thick gabion stone mattress is horizontally arranged in the range of 35 m upstream of the wall; the downstream cover is 30 m long, the 0.5 m thick reinforced concrete cover is arranged, and a 7.0 m deep and 0.5 m wide cast-in-place concrete anti-scour wall is arranged behind, a 2 m thick gabion stone mattress is horizontally arranged in the range of 20 m downstream of the wall. The stone mattress is backfilled with 2 m thick riprap for anti-scour, and the riprap particle size is ≥0.7 m. The upstream outer slope of the dam body is 1:0.3, four steps with a width of 0.5 m and a height of 0.2 m are arranged downstream, natural landscape stones are embedded on the dam top and the steps, and natural large stones are arranged on the upstream and downstream aprons.

[0030] In this embodiment, preferably, three steps are arranged on the river side of the diversion channel side weir 7, strip and block landscape stones are arranged on the steps in a staggered manner, and aprons are arranged behind the steps in a meandering manner along the water flow.

[0031] The diversion channel side weir 7 is 240 m long, 0.5 m wide at the top, 1.2 m high, and 2 m wide at the bottom, and the cross section is a concrete ladder structure. Three steps with a width of 0.5 m and a height of 0.3 m are arranged on the river side of the side weir, and strip and block landscape stones are arranged on the steps in a staggered manner. Aprons are arranged behind the steps in a meandering manner along the water flow, the thickness is 0.3 m, 0.2 m thick pebbles are embedded on the aprons, and sporadic colored pebbles are used for decoration.

[0032] In this embodiment, preferably, a sand-blocking sill is installed upstream of the intake gate 10 (water diversion gate), and the water diversion gate connects to the upstream water diversion channel via a 10m long twisted section. The designed water diversion flow rate is 3.89m³ / s, with an increased flow rate of 4.86m³ / s. The water diversion gate has one opening with a clear width of 4.0m. The opening is equipped with a flat working gate and a maintenance gate slot. The gate chamber is 5m long, 4.0m wide, with a bottom slab thickness of 1.0m and a gate pier thickness of 1.0m, and is an integral reinforced concrete structure. A 5m long reinforced concrete paving is laid upstream from the front edge of the gate bottom slab, and a concrete anti-scour wall with a 2.5m depth is installed in front of the paving. A maintenance bridge and a traffic bridge are arranged on the upper part of the gate chamber. The water diversion gate chamber connects to the stilling basin section downstream, with a total length of 16m. The stilling basin is 1m deep. After the stilling basin, there is a twisted section that is 10m long. At the end of the bottom plate of the twisted section, there is a scour wall with a top width of 0.5m and a burial depth of 2.5m. At the slope protection on both sides, there are partition walls with a depth of 0.6m and a width of 0.5m. After that, it connects to the downstream Keling Main Canal renovation section.

[0033] In this embodiment, preferably, an ecological gate 11 is arranged side by side with the water inlet gate 10. The ecological gate 11 supplies water to the downstream ecological forest and valley forest, providing ecological flow.

[0034] In this embodiment, preferably, the downstream of the sand flushing gate 12 is connected to the floodplain section. Specifically, during the operation of the sluice gate, the sand flushing gate needs to be opened frequently, specifically when the river inflow exceeds that of the intake gate, and utilizes the frequent floods to flush away the sand and keep the silt in front of the intake gate. The sand flushing gate is located to the left of the intake gate, with a designed intake flow rate of 3.89 m³ / h. 3 / s, forming a 60° angle with the diversion gate. The sand flushing gate has one opening, with a clear width of 4.0m. The opening is equipped with a flat working gate and a maintenance gate slot. The gate chamber is 5m long, 4.0m wide, with a 1.0m thick bottom slab and 1.0m thick gate piers. The leading edge of the gate bottom slab shares a cover and scour protection wall with the diversion gate. A maintenance bridge and a traffic bridge are located on the upper part of the gate chamber. Downstream of the sand flushing gate chamber, it connects to the seawall section. At the end of the seawall section, a 3.5m deep downstream scour protection channel is constructed. A filter layer, concrete inclined walls, and PVC filter pipes are arranged on the upstream side of the scour protection channel. The inclined walls have a slope of 1:1.5, a thickness of 0.3m, and a height of 3.5m, and are made of C20F200W6 concrete. The scour protection channel has a bottom width of 0.5m, a top width of 10m, and a height of 3.5m. The bottom is filled with rubble, and the top is protected by two layers of 1m thick gabion cages.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A diversion, desilting and scouring structure, characterized in that, The application relates to a riverway diversion channel (5) arranged on one side of a riverway; a diversion channel side weir (7) is arranged on the side of the diversion channel (5) close to the riverway; a diversion channel revetment (6) is arranged on the side of the diversion channel (5) far away from the riverway; a river blocking hub building is arranged at the upstream end of the diversion channel (5); the river blocking hub building comprises a diversion channel inlet sand blocking ridge (2), a pneumatic steel dam (3) and a river blocking overflow dam (4) which are arranged side by side in sequence; a water inlet gate (10) is arranged at the downstream end of the diversion channel (5); a water inlet gate sand blocking ridge (9) is arranged at the upstream of the water inlet gate (10); a sand flushing gate (12) is arranged between the water inlet gate sand blocking ridge (9) and the end of the diversion channel side weir (7).

2. The water diversion, desilting and scouring structure according to claim 1, characterized in that, The pneumatic steel dam (3) and the river blocking overflow dam (4) are arranged in a "straight line" mode in the main stream of the riverway; the diversion channel inlet sand blocking ridge (2) is arranged at the water inlet of the diversion channel (5).

3. The water diversion, desilting and scouring structure according to claim 2, characterized in that, The included angle between the water inlet of the diversion channel (5) and the pneumatic steel dam (3) is 20-30 degrees.

4. The water diversion, desilting and scouring structure according to claim 1, characterized in that, Three steps are arranged on the river side of the diversion channel side weir (7); strip and block-shaped rocks are arranged on the steps in a staggered mode; a apron is arranged at the back side of the steps; and the apron is arranged in a meandering mode along the water flow.

5. The water diversion, desilting and scouring structure according to claim 1, characterized in that, The diversion channel lamp strips (8) are arranged on the diversion channel side weir (7) respectively.

6. The water diversion, desilting and scouring structure according to claim 1, characterized in that, The water inlet gate (10) is connected with a stilling basin section downstream.

7. The water diversion, desilting and scouring structure according to claim 1, characterized in that, The water inlet gate (10) is arranged side by side with an ecological gate (11).

8. The water diversion, desilting and scouring structure according to claim 1, characterized in that, The sand flushing gate (12) is connected with a sea dike section downstream.

9. The water diversion, desilting and scouring structure according to claim 1, characterized in that, The included angle between the sand flushing gate (12) and the water inlet gate (10) is 50-70 degrees.

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