Pool arrangement structure

Abstract

The utility model provides a pool arrangement structure, which relates to the technical field of pool structures for construction, and comprises a tunnel, a pool is arranged at the bottom of the inlet end of the tunnel, the pool comprises a pool concrete bottom plate, pool concrete side walls are arranged on two sides of the pool concrete bottom plate, and a pool middle partition wall is arranged on the central axis of the pool concrete bottom plate. The top of the pool concrete side wall and the top of the pool mid-partition wall are jointly connected with a pool cast-in-place top plate, a pool overhaul cover plate is arranged on the side, close to the inlet end of the tunnel, of the pool cast-in-place top plate, and the pool cast-in-place top plate serves as a road structure layer of the tunnel. The pool arrangement is green and environment-friendly, the land area is saved, and the field leveling work amount is greatly reduced; the water pool structure is integrally arranged on the lower portion of the tunnel structure, the underground space is fully utilized, compared with a high-position water pool outside a tunnel through integral excavation of the tunnel, the land area is saved, the field leveling engineering amount is greatly reduced, the side slope problem caused by open excavation of the water pool and damage to mountains and original vegetation are completely eradicated, and environment friendliness is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction water tank structures, in particular to a water tank layout structure. Background Art

[0002] At present, most of the hydropower and water conservancy projects in China are concentrated in the alpine canyon areas of Tibetan areas. The geological conditions in this area are complex, the ecological environment is fragile, the engineering slopes are high and steep, and environmental protection problems such as dust in the construction process are prominent. Spraying is mainly used for dust reduction during construction. At the same time, a large amount of construction water is consumed for excavation and drilling. In addition, water is also consumed for vegetation maintenance after slope construction. The water sources for construction and vegetation maintenance often use high-level water tanks built at high places to store water to ensure the smoothness and stability of water supply. The common layout forms and water diversion methods of high-level water tanks for slope projects in current hydropower projects: ① Build an open high-level water tank by leveling at a suitable position on the upper part of the slope, and the water source is diverted from the flowing water of the gully at a high place or the river water is pumped by a water pump under pressure; ② Arrange single or multiple movable water tanks on the excavation berm of the slope to form a high-level water tank, and the water source is diverted from the flowing water of the gully at a high place or the river water is pumped by a water pump under pressure; Although these methods have achieved the basic use functions, there are some deficiencies. For method ①, the civil engineering quantity of the water tank is large, the problems of slope leveling of the site are prominent, the occupied area is large, and the cost is high; ② The capacity is small, the stability of water supply is poor, and the water diversion method is uneconomical. Content of the Utility Model

[0003] The utility model provides a water tank layout structure, aiming to improve the existing method of high-level water tanks for the construction of high and steep slopes in hydropower projects, and provide a high-level water tank layout structure that eliminates the slope leveling of the high-level water tank, reduces the construction land area, has low cost, stable water supply, economical water diversion, and is safe and environmentally friendly.

[0004] The utility model provides the following technical solutions to achieve the above purpose:

[0005] A water tank layout structure includes a tunnel. A water tank is arranged at the bottom of the inlet end of the tunnel. The water tank includes a concrete bottom slab of the water tank. Concrete side walls of the water tank are arranged on both sides of the concrete bottom slab of the water tank. A middle partition wall of the water tank is arranged on the central axis of the concrete bottom slab of the water tank. The tops of the concrete side walls of the water tank and the middle partition wall of the water tank are jointly connected to a cast-in-place roof slab of the water tank. A maintenance cover plate of the water tank is arranged on one side of the cast-in-place roof slab of the water tank close to the inlet end of the tunnel. The cast-in-place roof slab of the water tank also serves as the road structure layer of the tunnel.

[0006] Furthermore, roadside drainage side ditches are arranged on both sides of the top surface of the cast-in-place roof slab of the water tank. The roadside drainage side ditches include drainage ditch cover plates. Drainage ditch side walls are arranged on both sides of the bottom surface of the drainage ditch cover plates.

[0007] Furthermore, a plurality of drain pipes are arranged in the cast-in-place roof slab of the water tank along the depth direction of the tunnel. The two ends of the drain pipes are respectively connected to the roadside drainage side ditches and the water tank.

[0008] Furthermore, a drain pipe wire mesh filter is provided at one end of the drain pipe connecting to the roadside drainage ditch.

[0009] Furthermore, an air vent hole is provided on one side of the water pool near the inlet end of the tunnel.

[0010] Furthermore, a number of bottom communication holes of the middle pier of the water pool are provided at the bottom of the middle partition wall of the water pool along the depth direction of the tunnel.

[0011] Advantages

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The water pool of the utility model is arranged in a green and environment-friendly manner, saving land area and greatly reducing the site leveling workload; the overall structure of the water pool is arranged under the tunnel structure, making full use of the underground space. Excavated together with the tunnel, compared with the high-position water pool outside the tunnel, it saves land area, greatly reduces the site leveling workload, eliminates the slope problems caused by the open excavation of the high-position water pool and the damage to the mountain body and original vegetation, and is green and environment-friendly.

[0014] 2. The utility model makes full use of the water in the tunnel side ditch and reduces the water pumping volume of the water pump; the upper part of the water pool uses the drain pipe arranged inside the tunnel side ditch to flow the water in the tunnel side ditch into the water pool by gravity, realizing automatic water replenishment, improving the utilization value of the side ditch water, reducing the amount of discharged water. At the same time, a wire mesh filter is arranged on the upper part of the drain pipe to ensure water quality, reduce the risk of drain pipe blockage, and reduce the later maintenance investment; the automatic water replenishment function greatly reduces the water pumping volume from the river by the water pump and saves electric energy.

[0015] 3. The utility model has low cost, simple and safe construction; the water pool structure is arranged in the tunnel and excavated together with the highway tunnel, reducing the site leveling workload and the open excavation and support workload of the external high-position water pool. At the same time, the automatic water replenishment function adopted by the utility model saves the cost of pumping water from the river, reducing the construction cost and later operation cost of the water pool structure of the utility model; in addition, the utility model does not involve the problem of open excavation slopes, avoiding safety risks such as falling stones during the construction process, and has the advantages of less investment in manpower and machinery, simple, convenient and safe construction. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below only relate to some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1It is a three-dimensional structure schematic diagram of the present utility model;

[0018] Figure 2 It is a cross-sectional schematic diagram of the inlet structure of the present utility model;

[0019] Figure 3 It is a cross-sectional schematic diagram of the tunnel body structure of the present utility model;

[0020] Figure 4 is Figure 2 Schematic diagram of A-A section;

[0021] Figure 5 is Figure 2 Schematic diagram of B-B section;

[0022] Figure 6 is Figure 2 Schematic diagram of C-C section;

[0023] Figure 7 is Figure 2 Schematic diagram of D-D section;

[0024] Reference numerals: 1 - tunnel; 2 - water pool; 2-1 - concrete bottom slab of water pool; 2-2 - concrete side wall of water pool; 2-3 - middle partition wall of water pool; 3 - inspection cover plate of water pool; 4 - cast-in-place top slab of water pool; 5 - roadside drainage side ditch; 5-1 - side wall of drainage ditch; 5-2 - drainage ditch cover plate; 6 - drain pipe; 7 - wire filter screen of drain pipe; 8 - ventilation hole of water pool; 9 - bottom connecting hole of middle pier of water pool. Detailed implementation manners

[0025] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0026] It should be noted that in the present utility model: The terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that comprises a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices; The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present utility model and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation or be constructed and operated in a specific orientation; The terms "first", "second", etc. are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; The terms "installed", "set up", "provided with", "connected", "connected to", "socketed", etc. should be understood in a broad sense; For example, it can be a fixed connection, a detachable connection, or an integral structure; It can be a mechanical connection or an electrical connection; It can be directly connected, or indirectly connected through an intermediate medium, or there is an internal connection between two devices, elements or components. And, in addition to being able to represent the orientation or positional relationship, some terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to specific circumstances.

[0027] Embodiment. A pool layout structure, the structure reference Figures 1 to 7 , including a tunnel 1, a pool 2 is provided at the bottom of the inlet end of the tunnel 1. The pool 2 includes a pool concrete bottom slab 2-1, pool concrete side walls 2-2 are provided on both sides of the pool concrete bottom slab 2-1, a pool middle partition wall 2-3 is provided on the central axis of the pool concrete bottom slab 2-1, the tops of the pool concrete side walls 2-2 and the pool middle partition wall 2-3 are jointly connected to a pool cast-in-place top slab 4, a pool inspection cover plate 3 is provided on one side of the pool cast-in-place top slab 4 close to the inlet end of the tunnel 1, and the pool cast-in-place top slab 4 also serves as the road structural layer of the tunnel 1. The width of the pool concrete bottom slab 2-1 is the same as that of the tunnel 1, and the length of the pool 2 is calculated and determined according to the construction requirements. The pool 2 is integrally arranged under the tunnel structure, making full use of the underground space and excavated integrally with the tunnel.

[0028] On both sides of the top surface of the cast-in-place roof 4 of the water pool, there are roadside drainage ditches 5. The roadside drainage ditch 5 includes a drainage ditch cover plate 5-2, and on both sides of the bottom surface of the drainage ditch cover plate 5-2, there are drainage ditch side walls 5-1. Inside the cast-in-place roof 4 of the water pool, several drain pipes 6 are arranged along the depth direction of the tunnel 1. The two ends of the drain pipe 6 are respectively connected to the roadside drainage ditch 5 and the water pool 2. By using the roadside drainage ditch 5 to collect the flowing water and collecting it into the water pool 2 through the drain pipe 6, the utilization value of the ditch water is improved, and the amount of discarded water is reduced.

[0029] One end of the drain pipe 6 connected to the roadside drainage ditch 5 is provided with a drain pipe wire mesh 7. By setting the drain pipe wire mesh 7, the drain pipe 6 is prevented from being blocked.

[0030] On one side of the water pool 2 close to the inlet end of the tunnel 1, there is a water pool ventilation hole 8. By setting the water pool ventilation hole 8, it is used to self-drain the excess tunnel seepage water exceeding the water pool capacity. To prevent the water flowing out of the water pool 2 from eroding the road surface structure, the water pool ventilation hole 8 is connected to the open road drainage ditch outside the inlet and outlet of the tunnel 1.

[0031] At the bottom of the middle partition wall 2-3 of the water pool, several bottom connecting holes 9 of the water pool middle pier are arranged along the depth direction of the tunnel 1. By setting the bottom connecting holes 9, the connectivity of the water in the water pools on both sides of the partition wall is strengthened.

[0032] Taking the water pool at the outlet slope of the right bank diversion tunnel of the RM project as an example, the water pool is 20m long, 7m wide, and 3.8m deep, and the water pool capacity is about 500m³. It is implemented by using the right bank high-level branch tunnel. The specific implementation method is as follows:

[0033] After the highway tunnel 1 is excavated and the initial support is carried out, the lower space within about 20m of the outlet section of the tunnel is excavated and widened, the excavation depth is about 4.5m. After the widening is completed, the bottom is leveled, and graded crushed stone and concrete cushion are paved, with a total laying thickness of about 0.3m.

[0034] Formwork is erected and steel bars are tied on the bottom concrete cushion, and then concrete is poured. First, the concrete of the bottom slab 2-1 is poured, and then the concrete of the side walls 2-2, the middle partition wall 2-3 and the roof 4 is poured. The concrete is C25 second-grade aggregate, transported by a 6m³ concrete mixer truck, and pumped into the warehouse. Before the steel bars of the outer side wall 2-2 and the middle partition wall 2-3 are tied and the concrete is poured, the spaces for the ventilation hole 8 and the bottom connecting hole 9 of the middle partition wall are reserved.

[0035] When pouring the roof concrete, 10cm diameter PVC pipes are buried in the formwork erected on the cast-in-place roof 4 of the water pool at the positions of the two side ditches 5 in advance as the drain pipes 6. The inspection cover plate 3 of the water pool is a precast slab, and the drain pipes 6 are reserved in the same way during prefabrication.

[0036] After the concrete age of the high-level water tank structure 2 and the cast-in-place roof slab 4 reaches the design strength, the construction of the drainage side ditches 5 on both sides is carried out. The drainage side ditches form an integral part of the tunnel drainage system. The side wall 5-1 of the side ditch is a cast-in-place concrete structure, and 5-2 is a precast concrete structure. During the construction of the side ditch, attention should be paid to the protection of the drain pipe 6 to prevent blockage.

[0037] After the construction of the drainage side ditch 5 is completed, a wire mesh filter 7 is constructed at the port of the drain pipe 6.

[0038] Install the inspection cover plate 3 of the water tank and the precast cover plate 5-2 of the drainage ditch in place.

[0039] Obviously, the above are only some embodiments of the present utility model, rather than all embodiments. The above embodiments are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any combination, modification, equivalent replacement, improvement and all other embodiments that can be made by those of ordinary skill in the art within the spirit and principle of the present utility model should be within the protection scope of the present utility model.

Claims

1. A water pool arrangement structure, comprising a tunnel (1), wherein a water pool (2) is arranged at the bottom of the inlet end of the tunnel (1), characterized in that: The water pool (2) comprises a water pool concrete bottom plate (2-1), water pool concrete side walls (2-2) are arranged on both sides of the water pool concrete bottom plate (2-1), a water pool middle partition wall (2-3) is arranged on the central axis of the water pool concrete bottom plate (2-1), the tops of the water pool concrete side walls (2-2) and the water pool middle partition wall (2-3) are connected to a water pool cast-in-place top plate (4), a water pool inspection cover plate (3) is arranged on one side of the water pool cast-in-place top plate (4) close to the entrance end of the tunnel (1), and the water pool cast-in-place top plate (4) also serves as a road structure layer of the tunnel (1).

2. The pool arrangement structure according to claim 1, characterized in that: Roadside drainage ditches (5) are arranged on both sides of the top surface of the cast-in-place top plate (4) of the water pool. The roadside drainage ditches (5) include a drainage ditch cover plate (5-2). Drainage ditch side walls (5-1) are arranged on both sides of the bottom surface of the drainage ditch cover plate (5-2).

3. The pool arrangement structure according to claim 2, characterized in that: A plurality of drainage pipes (6) are arranged in the cast-in-place top plate (4) of the water pool along the depth direction of the tunnel (1), and the two ends of the drainage pipes (6) are respectively connected to the roadside drainage ditch (5) and the water pool (2).

4. The pool arrangement structure according to claim 3, characterized in that: A drainage pipe wire filter (7) is provided at one end of the drainage pipe (6) connected to the roadside drainage ditch (5).

5. The pool arrangement structure according to claim 1, characterized in that: A water pool vent (8) is provided on one side of the water pool (2) close to the inlet end of the tunnel (1).

6. The pool arrangement structure according to claim 1, characterized in that: The bottom of the partition wall (2-3) in the water pool is provided with a plurality of communication holes (9) at the bottom of the water pool pier along the depth direction of the tunnel (1).

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