Vertical shaft type water inlet for urban drainage

Abstract

The utility model discloses a vertical shaft type water inlet for urban drainage. The vertical shaft type water inlet comprises a bottom plate, an underground diaphragm wall, a tunnel accident bulkhead gate, a water inlet service gate, a vertical shaft wall, a water delivery tunnel, a breather pipe and a hoist room, the bottom plate is located on the bottommost side of the water inlet vertical shaft and makes direct contact with rock mass on the lower side. The underground diaphragm wall is located on the outer side of the cross section of the water inlet vertical shaft, makes direct contact with rock mass or soil mass and is of a reinforced concrete soil retaining enclosure structure. The tunnel accident bulkhead gate is located on the inner side of the water inlet vertical shaft. The water inlet service gate is positioned at an inner side wellhead of the water inlet vertical shaft; the water delivery tunnel is positioned on the lower side of the water inlet vertical shaft and is vertically communicated with the water inlet vertical shaft; the breather pipe is arranged in the tunnel accident bulkhead gate and the water inlet service gate; the hoist room is arranged on the upper portion of the water inlet vertical shaft. The well wall stress condition is good, the total investment is small, the construction progress is fast, and operation scheduling and management are convenient.

Description

Technical Field

[0001] The utility model relates to a vertical shaft water inlet structure in water conservancy and hydropower projects, and specifically to a vertical shaft water inlet for urban drainage in a water diversion and supply project, which can separately control the operation of a water inlet forebay and a water delivery tunnel gate, and combines a water inlet working gate with a tunnel accident maintenance gate. Background Art

[0002] In water diversion projects, the water inlet is the first structure of the water transfer structure and the deep discharge structure. The shaft-type water inlet is usually built in the mountain of the hydraulic tunnel or the dam body with buried pipes under the dam. It is a water intake structure shaped like a shaft and has a gate inside to control the water flow.

[0003] Conventional shaft intakes are constructed within a mountain. They feature a simple structure, require no working bridge, are unaffected by wind and waves, ice, and are less susceptible to earthquakes. A shaft intake consists of a shaft, a working gate, and a hoisting and closing mechanism. The shaft is typically rectangular in cross-section and lined. A gate is located at the bottom of the shaft to control the flow in the tunnel below, while the hoisting and closing mechanism and an operating room are located at the top.

[0004] In urban drainage projects, the water depth of river networks is relatively shallow compared to reservoirs. Therefore, vertical shaft inlets are typically used as the entrance to the drainage channel. Water then flows from the shaft into the water diversion tunnel. Urban river networks typically maintain a constant water level based on urban development plans. Funnel-shaped inlets would cause water to continuously flow into the shaft, preventing the ability to maintain a constant water level.

[0005] Setting up a control gate in the river near the vertical shaft can solve the problem of river water constantly flowing into the water diversion tunnel. However, considering the tight land resources in urban areas, the construction of the control gate requires additional construction land, and to a certain extent increases the project cost and construction period. Utility Model Content

[0006] The purpose of the present utility model is to solve the problems existing in the prior art and propose a vertical shaft type water inlet for urban drainage, which can be arranged in combination with the water inlet working gate and the water transfer tunnel accident maintenance gate. The water inlet shaft is annular in structure as a whole. On the one hand, the upper working gate of the vertical shaft and the accident maintenance gate of the vertical shaft are combined and arranged, which can save urban construction land as a whole and help reduce project investment. On the other hand, the vertical shaft is a circular structure, which is conducive to improving the stress condition of the vertical shaft lining compared with the traditional rectangular cross-section vertical shaft type water inlet, and is also more suitable for the relatively poor geological conditions in cities.

[0007] The technical solution adopted in this utility model is:

[0008] The shaft-type water inlet used for urban drainage is located at the upper part of the water transfer tunnel and includes a bottom plate, an underground continuous wall, a tunnel accident maintenance gate, a water inlet working gate, a water inlet shaft, a water transfer tunnel, a vent pipe and a hoisting and shutting machine room; the bottom plate is located at the bottom of the water inlet shaft, in direct contact with the lower rock mass, and is a reinforced concrete structure; the underground continuous wall is located outside the cross section of the water inlet shaft, in direct contact with the rock mass or soil mass, and is a reinforced concrete retaining structure, and other types of retaining structures such as cast-in-place piles can also be used; the tunnel accident maintenance gate is located on the inner side of the water inlet shaft, in direct contact with the shaft wall, bottom plate and water body of the water inlet shaft, and is Flat steel gate; the water inlet working gate is located at the inner wellhead of the water inlet shaft, in direct contact with the well wall and water body of the water inlet shaft, and is a flat steel gate; the well wall of the water inlet shaft is in direct contact with the water body, and is a reinforced concrete structure; the water diversion tunnel is located on the lower side of the water inlet shaft, vertically connected with the water inlet shaft, and is a reinforced concrete structure; the ventilation pipe is arranged inside the tunnel emergency maintenance gate and the water inlet working gate, and is used to allow air circulation during the opening and closing process of the emergency maintenance gate and the water inlet working gate; the opening and closing machine room is arranged at the upper part of the water inlet shaft, and is used to arrange the opening and closing machine, electrical equipment, etc.

[0009] Furthermore, the tunnel emergency maintenance gate includes an emergency maintenance gate, an emergency maintenance gate slot, and an emergency maintenance gate pier. The emergency maintenance gate is used to close the gate to block the water on the downstream water supply tunnel side when the upstream water supply tunnel needs to be inspected or dredged, so that the upstream water supply tunnel can be inspected without water; the emergency maintenance gate slot is used to place, support and fix the emergency maintenance gate; the emergency maintenance gate pier is used to support the emergency maintenance gate and the separation gate hole, and is a reinforced concrete structure.

[0010] Furthermore, the water inlet working gate structure includes a working gate, a working gate slot, a trash rack, a trash rack slot and a working gate pier. The working gate is used to adjust the orifice flow and can be opened and closed in moving water; the working gate slot is used to place, support and fix the working gate; the trash rack is arranged on the upstream side of the working gate and is a frame-type structure used to prevent dirt from entering the water diversion tunnel; the trash rack slot is used to place, support and fix the trash rack; the working gate pier is used to support the working gate and trash rack, and can separate the gate hole, and is a reinforced concrete structure.

[0011] The beneficial effects of the utility model are:

[0012] 1. The working gate of the water inlet at the upper part of the shaft and the accident inspection door of the water diversion tunnel at the lower part of the shaft are arranged together to facilitate scheduling and daily inspections during operation.

[0013] 2. Good stress conditions on the shaft wall. Compared with the rectangular cross-section of conventional vertical shaft water inlets, this water inlet structure adopts a circular cross-section. In areas with poor urban geological conditions, whether in operation or drainage maintenance period, the stress conditions of bearing internal and external pressure are no less than those of rectangular cross-section structures.

[0014] 3. Overall investment is reduced and construction progress is faster. Although the overall diameter of the vertical shaft is relatively large after the water inlet forebay and the water diversion tunnel gate are combined, the construction land area is reduced and the impact of construction on the surrounding urban environment is also reduced, thus reducing investment and accelerating the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a longitudinal sectional view of an embodiment of the utility model;

[0016] Figure 2 This is a cross-sectional view of Example Ⅰ-Ⅰ of the present utility model;

[0017] Figure 3 This is a cross-sectional view of the embodiment A-A of the present utility model;

[0018] Figure 4 This is a cross-sectional view of Example B-B of the present utility model;

[0019] Figure 5 This is a cross-sectional view of the embodiment of the utility model taken along line C-C;

[0020] Figure 6 This is a cross-sectional view of the embodiment D-D of the present utility model;

[0021] Figure 7 It is a sectional view taken along line E-E of an embodiment of the present invention.

[0022] In the figure: 1-bottom plate; 2-underground continuous wall; 3-tunnel emergency maintenance gate; 31-accident maintenance gate; 32-accident maintenance gate slot; 33-accident maintenance gate pier; 4-water inlet working gate; 41-working gate; 42-working gate slot; 43-trash rack; 44-trash rack slot; 45-working gate pier; 5-water inlet shaft; 6-water transmission tunnel; 7-ventilation pipe; 8-hoisting and shutting machine room. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below with reference to the accompanying drawings.

[0024] like Figures 1 to 7 As shown, the utility model is a vertical shaft water inlet for urban drainage, which is located at the upper part of the water diversion tunnel and includes a bottom plate 1, an underground continuous wall 2, a tunnel accident maintenance gate 3, a water inlet working gate 4, a water inlet shaft 5, a water diversion tunnel 6, a ventilation pipe 7 and a hoisting and shutting machine room 8.

[0025] The bottom plate 1 is located at the bottom of the water inlet shaft 5, in direct contact with the lower rock mass, and is a reinforced concrete structure. The underground continuous wall 2 is located outside the cross section of the water inlet shaft 5, in direct contact with the rock mass or soil, and is a reinforced concrete retaining wall structure. The tunnel emergency maintenance gate 3 includes an emergency maintenance gate 31, an emergency maintenance gate slot 32, and an emergency maintenance gate pier 33. The emergency maintenance gate 31 is used to close the gate to block the water in the downstream water supply tunnel 6 when the upstream water supply tunnel 6 needs to be repaired or silted, so that the upstream water supply tunnel 6 can be repaired without water; the emergency maintenance gate slot 32 is used to place, support and fix the emergency maintenance gate 31; the emergency maintenance gate pier 33 is used to support the emergency maintenance gate 31 and the separation gate hole, and is a reinforced concrete structure. The water inlet working gate 4 includes a working gate 41, a working gate slot 42, a trash rack 43, a trash rack slot 44, and a working gate pier 45. The working gate 41 is used to adjust the orifice flow and can be opened and closed in moving water. The working gate slot 42 is used to place, support, and fix the working gate 41. The trash rack 43 is arranged on the upstream side of the working gate 41 and is a frame-type structure used to prevent waste from entering the water transfer tunnel 6. The trash rack slot 44 is used to place, support, and fix the trash rack 43. The working gate pier 45 is used to support the working gate 41 and trash rack 43, and can also separate the gate holes. It is a reinforced concrete structure. The shaft wall of the water inlet shaft 5 is located on the inner side of the cross section of the underground continuous wall 2, directly in contact with the water body, and is a reinforced concrete structure. The water transfer tunnel 6 is located on the lower side of the water inlet shaft 5 and is vertically connected to the water inlet shaft 5. It is a reinforced concrete structure. The vent pipe 7 is arranged inside the emergency gate pier 33 and the service gate pier 45 to allow air circulation during the opening and closing of the emergency gate 31 and the service gate 41. The hoist room 8 is arranged above the water inlet shaft 5 and is used to house the hoist, electrical equipment, etc.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vertical shaft water inlet for urban drainage, located above the water tunnel, characterized by: It includes a bottom plate, an underground continuous wall, a tunnel accident maintenance gate, a water inlet working gate, a water inlet shaft, a water transfer tunnel, a vent pipe and a hoisting and shutting machine room; the bottom plate is located at the bottom of the water inlet shaft, in direct contact with the lower rock mass, and is a reinforced concrete structure; the underground continuous wall is located outside the cross section of the water inlet shaft, in direct contact with the rock mass or soil, and adopts a reinforced concrete retaining structure or a cast-in-place pile retaining structure; the tunnel accident maintenance gate is located on the inner side of the water inlet shaft, and is in direct contact with the wall, bottom plate and water body of the water inlet shaft. Direct contact, for a flat steel gate; the water inlet working gate is located at the inner wellhead of the water inlet shaft, in direct contact with the well wall and water body of the water inlet shaft, and is a flat steel gate; the well wall of the water inlet shaft is in direct contact with the water body, and is a reinforced concrete structure; the water diversion tunnel is located on the lower side of the water inlet shaft, vertically connected with the water inlet shaft, and is a reinforced concrete structure; the vent pipe is arranged inside the tunnel accident maintenance gate and the water inlet working gate; the hoisting and shutting machine room is arranged at the upper part of the water inlet shaft.

2. The vertical shaft water inlet for urban drainage according to claim 1, characterized in that: The tunnel emergency maintenance gate includes an emergency maintenance gate, an emergency maintenance gate slot, and an emergency maintenance gate pier. The emergency maintenance gate slot supports and fixes the emergency maintenance gate; the emergency maintenance gate pier supports the emergency maintenance gate and separates the gate holes, and is a reinforced concrete structure.

3. The vertical shaft water inlet for urban drainage according to claim 1, characterized in that: The water inlet working gate includes a working gate, a working gate slot, a trash rack, a trash rack slot and a working gate pier. The working gate slot supports and fixes the working gate; the trash rack is arranged on the upstream side of the working gate and is a frame-grid structure; the trash rack slot supports and fixes the trash rack; the working gate pier supports the working gate and the trash rack, and separates the gate hole, and is a reinforced concrete structure.

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