CN214033574U - Storage-regulating pressure-regulating automatic silt-flushing non-pressure hole structure - Google Patents

Abstract

The utility model relates to an automatic non-pressure hole structure that sludges of regulation pressure regulating, including retaining hole section, import barricade, inlet tube, grit chamber, automatic sludging system, air vent of dashing. The water storage tunnel section adopts an urban door tunnel type section, slopes are arranged downwards, and the water storage tunnel section is convenient for exhausting, precipitating water body suspended substances and then pushing the water body suspended substances to a grit chamber; the inlet retaining wall is used for sealing the hole inlet, and a water inlet pipe is arranged in the retaining wall; the sand basin is positioned at the downstream side of the water storage tunnel section and is a sludge collecting basin formed by partial sinking of the bottom of the tunnel; the inlet of the automatic flushing silt system is positioned on the side wall of the water storage hole section at the position of the grit chamber, the outlet is positioned in the downstream valley, the automatic flushing silt system is arranged along the slope, and the outlet is provided with a valve for controlling sludge discharge. The utility model discloses utilize the volume after the non-pressure hole enlarges to do the equalizing basin concurrently, combine the topography to set up the automatic silt pipe that dashes of water conservancy at the rear portion, the non-pressure hole does not account for the ground, and regulation pressure regulating water level becomes width of cloth little, does benefit to the steady operation of carrying water pump station lectotype and low reaches water delivery system, and muddy water deposits effectually to can realize automatic silt of dashing.

Description

Storage-regulating pressure-regulating automatic silt-flushing non-pressure hole structure

Technical Field

The utility model relates to a tunnel structure among the hydraulic and hydroelectric engineering, concretely relates to guide among the water supply engineering, arrange the regulation pressure regulating of having pressure or non-pressure water delivery tunnel front end and can dash the non-pressure hole structure that becomes silted up automatically.

Background

In the water supply engineering, when a pump station is adopted to lift water in a high-sediment tide sensitive river section, the requirement of taking relatively clear river water in a tide waiting and ebbing period and the requirement of real-time pumping of the pump station and linkage of a downstream water receiving area or each water division port water supply period are met, the operation scheduling of the pump station is complex, and at the moment, a regulating reservoir or a high-level regulating pool is arranged at the downstream of the pump station, so that the water lifting operation time of the pump station is independent of the downstream water supply time, the regulating and storing functions are played, and the operation scheduling of the pump station is simplified.

In a regulation reservoir or a high-level regulating reservoir, how to store and clear sediment has great influence on engineering investment and operation management, and when the requirement on diversion water quality is higher, a dosing and precipitating mode is generally adopted. The dosing sedimentation tank has higher cost on one hand, and on the other hand, the dosing sedimentation tank needs a larger construction site, so that the land acquisition policy treatment difficulty and the construction cost are relatively higher in a region with tense land.

Chinese patent CN209277087U discloses a diversion project head storage cleaning scouring silt regulation reservoir, which utilizes a retaining dam and a valley terrain enclosure to form the regulation reservoir, wherein a high-level water inlet pipe and a low-level flood discharge scouring pipe are respectively arranged on two sides of the retaining dam, deep layer whirling water flow can be formed in a reservoir area, a reservoir tail tunnel water inlet obtains surface layer clear water, and the regulation reservoir has the effects of promoting sediment precipitation, automatically scouring silt and obtaining surface layer clear water, and although the regulation reservoir is arranged on the valley part with relatively less land occupation, a certain area of land still needs to be collected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome long distance and lead when supplying water engineering pump station and carrying water, the difficult problem is handled in low reaches regulation reservoir or high-order regulation pond land acquisition, there is or the non-pressure hole that certain length was enlargied is set up to the low reaches pressure or non-pressure water delivery tunnel head, utilizes the volume after the non-pressure hole enlarges to do the regulation pond concurrently to combine the topography to set up the automatic silt system that dashes of water conservancy at the rear portion, when avoiding the land acquisition, have the function of regulation, pressure regulating, automatic silt that dashes.

The utility model adopts the technical proposal that: the utility model provides an automatic non-pressure hole structure that sludges of regulation pressure regulating, the upper reaches links up the tunnel inlet tube in water lift pump station low reaches, and low reaches links up and presses or non-pressure water delivery tunnel, mainly comprises retaining hole section, import barricade, inlet tube, grit chamber, automatic sludging system, air vent etc..

The water storage tunnel section is of a non-pressure tunnel main body structure, a city gate tunnel type section is adopted, a tunnel bottom plate and a side top arch are treated by adopting reinforced concrete lining, and the lining structure is arranged at intervals of a certain distance of a facility work seam. And water stops are arranged in the construction joints. The tunnel is set on the downstream side so as to facilitate the exhaust during water filling and the push of the suspended matter in the water body after sedimentation to the grit chamber.

The inlet retaining wall is positioned at the upstream of the water storage tunnel section and is a concrete retaining wall, the concrete retaining wall is poured after the tunnel excavation and lining construction of the water storage tunnel section is completed and is used for sealing the non-pressure tunnel entrance, and the top of the retaining wall is reserved with an air vent; the water inlet pipe is positioned in the inlet retaining wall, the upstream is connected with a water lifting pump station, the downstream is connected with a water storage tunnel section, and a buried steel pipe structure is generally adopted; the sand basin is positioned at the downstream side of the water storage tunnel and is a sludge collecting basin formed by partial sinking of the bottom of the tunnel; the inlet of the automatic flushing silt system is positioned on the side wall of the water storage hole section at the position of the grit chamber, the outlet is positioned in the downstream valley, the automatic flushing silt system is arranged along the slope, and the outlet is provided with a valve for controlling sludge discharge.

The utility model has the advantages that:

1) the non-pressure holes do not occupy the ground. The water storage tunnel section is formed by expanding and digging a conventional tunnel, the length direction of the tunnel is mainly utilized to create a storage volume, the whole tunnel is an underground engineering, land surface cultivated land or forest land is not occupied, the protection range is basically consistent with that of the tunnel before the tunnel diameter is expanded, and the policy handling difficulty is low.

2) The amplitude of the storage and pressure regulating water level is small. The length direction limiting conditions of the water storage tunnel are few, a large volume can be set, and when the function of a high-level water tank is exerted, the amplitude of water level variation of the water storage tank is small, so that the water pump type selection of a water lifting pump station and the stable operation of a downstream water delivery system are facilitated.

3) The sedimentation effect of the muddy water body is good. The non-pressure holes with enlarged hole diameters have low flow velocity and large length, and are beneficial to pushing and collecting the water body suspended substances to a grit chamber at the bottom of the holes after the water body suspended substances are precipitated.

4) Can realize automatic erosion and deposition. The automatic silt flushing system is arranged by combining the valley topography penetrated by the downstream tunnel, and the silt can be effectively discharged to the grit chamber by opening the valve, so that the energy is saved and the environment is protected.

Drawings

FIG. 1 is a floor plan of an embodiment of the present invention;

FIG. 2 is a longitudinal section of the impounded water tunnel section of FIG. 1;

FIG. 3 is a longitudinal section of the automatic sluicing system of FIG. 1;

FIG. 4 is a cross-sectional view A-A of FIG. 2;

FIG. 5 is a cross-sectional view B-B of FIG. 2;

fig. 6 is a cross-sectional view C-C of fig. 3.

In the figure: 1-no pressure hole; 11-a water storage tunnel section; 12-imports retaining walls; 12 a-non-pressure hole manhole; 12 b-hoisting a gourd; 12 c-steel ladder stand; 13-a grit chamber; 14-a vent hole; 2-water inlet pipe; 3, an automatic sludging system; 31-sand washing pipe; 32-underground control valve wells; 32 a-a control valve; 32 b-an upstream service valve; 32 c-valve well manhole; 33-concrete box culvert; 34-concrete retaining wall; 4-water extraction pump station; 5-pressure or non-pressure water delivery tunnel.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1 to 6, the utility model relates to an automatic non-pressure hole structure that sludges of regulation pressure regulating, the upper reaches link up 4 low reaches of pump station of lifting water tunnel inlet tube 2, and the low reaches link up to have or non-pressure water delivery tunnel 5, mainly by retaining hole section 11, import barricade 12, inlet tube 2, grit chamber 13, automatic sludging system 3, air vent 14 etc. constitute.

The water storage tunnel section 11 is a main structure without a pressure tunnel 1, an urban door tunnel type section is adopted, a tunnel bottom plate and a side top arch are lined by reinforced concrete, and water stopping is arranged in each lining structure at intervals of 6-12 m facility construction joints. The tunnel is set on the downstream side so as to be convenient for being discharged through the vent holes 14 and being pushed to the grit chamber 13 after the water body suspended matter is precipitated when being filled with water.

The inlet retaining wall 12 is located at the upstream of the water storage tunnel section 11 and is a concrete retaining wall, and is poured after the construction of digging and lining of the water storage tunnel section 11 is completed, so that the inlet retaining wall is used for sealing the hole inlet of the non-pressure tunnel 1.

A non-pressure hole manhole 12a is arranged in the inlet retaining wall 12 and used for people entering during tunnel maintenance. The manhole generally adopts the steel pipe, and the steel pipe internal diameter can be taken ordinary human height. When the tunnel normally runs, the manhole is plugged by a steel choke plug; when the tunnel overhauls, utilize calabash hoist 12b to open the steel bulkhead, the maintainer can be through the manhole, along setting up in the steel cat ladder 12c of the 12 upstream faces of import barricade, carries out the tunnel to non-pressure hole 1 bottom down and overhauls.

The top of the inlet retaining wall 12 is reserved with a vent hole 14 for exhausting when the non-pressure hole 1 is filled with water and supplementing air when the hole is drained. The ventilation holes 14 may be provided with louvers to block foreign objects from entering the tunnel.

The inlet retaining wall 12 is internally provided with a water inlet pipe 2, the upstream of the water inlet pipe 2 is connected with a water lifting pump station 4, and the downstream is connected with a water storage tunnel section 11, generally adopting a buried steel pipe structure.

The grit chamber 13 is located at the downstream side of the water storage tunnel section 11 and is a sludge collecting chamber formed by partial sinking of the bottom of the tunnel.

The automatic sludging system 3 consists of a sand washing pipe 31, an underground control valve well 32, a concrete box culvert 33 at the downstream of the valve well and an outlet concrete retaining wall 34.

The import of scouring pipe 31 is located the retaining hole section 11 lateral wall at grit chamber 13 position, and the export is located the low reaches valley, and the downslope is arranged, and the export is established the control of underground control valve well 32 and is arranged mud, connects concrete box culvert 33 behind the underground control valve well 32, and concrete box culvert 33 is terminal to link up with the current situation valley through concrete barricade 34. Control valve 32a and upstream service valve 32b are established in the underground control valve well 32, and when the tunnel normally operated, upstream service valve 32b opened, and control valve 32a closed, open control valve 32a when needing to arrange mud and can utilize the valley topography to arrange mud automatically to grit chamber 13, energy-concerving and environment-protective. If the control valve 32a needs to be repaired, a service person can enter the valve well through the valve well inlet manhole 32c and close the upstream service valve 32b to repair the control valve 32 a.

The above embodiments are described with reference to the accompanying drawings, but the scope of the invention is not limited thereto, and it should be noted that, for those skilled in the art, the technical solutions obtained by equivalent replacement or equivalent transformation without departing from the spirit of the invention, all of which belong to the protection scope of the invention.

Claims (8)

1. The utility model provides an automatic non-pressure hole structure that sludges of regulation pressure regulating, its upper reaches link up the tunnel inlet tube in lift pump station low reaches, and low reaches link up and press or non-pressure water delivery tunnel, its characterized in that: the system comprises a water storage tunnel section, an inlet retaining wall, a water inlet pipe, a sand basin, an automatic silt flushing system and a vent hole; the water storage tunnel section is of a non-pressure tunnel main body structure; the inlet retaining wall is positioned at the upstream of the water storage tunnel section and used for sealing a non-pressure tunnel entrance, and the top of the inlet retaining wall is reserved with the vent hole; the water inlet pipe is positioned in the inlet retaining wall, the upstream of the water inlet pipe is connected with a water lifting pump station, and the downstream of the water inlet pipe is connected with the water storage tunnel section; the grit chamber is positioned at the downstream side of the water storage tunnel section and is a sludge collecting tank formed by partial sinking of the bottom of the tunnel of the water storage tunnel section; the inlet of the automatic flushing and silting system is positioned on the side wall of the water storage tunnel section at the position of the grit chamber, and the outlet of the automatic flushing and silting system is positioned in the downstream valley and arranged along the slope.

2. The storage-regulating pressure-regulating automatic silt-flushing hole-free structure according to claim 1, characterized in that: the tunnel of the water storage tunnel section adopts a gate tunnel type section, a tunnel bottom plate and a side top arch are treated by adopting reinforced concrete lining, and the tunnel is pitched to the downstream side so as to be convenient for air exhaust during water filling and push the water body suspended matter to the grit chamber after sedimentation.

3. The storage-regulating pressure-regulating automatic silt-flushing hole-free structure according to claim 1, characterized in that: a non-pressure hole manhole is arranged in the inlet retaining wall and used for people entering during tunnel maintenance.

4. The storage-regulating pressure-regulating automatic silt-flushing hole-free structure according to claim 1, characterized in that: the water inlet pipe adopts a buried steel pipe structure.

5. The storage-regulating pressure-regulating automatic silt-flushing hole-free structure according to claim 1, characterized in that: and a valve is arranged at an outlet of the automatic sludge flushing system to control sludge discharge.

6. The storage-regulating pressure-regulating automatic silt-flushing hole-free structure according to claim 2, characterized in that: and each concrete lining is provided with a construction joint at a certain interval, and water stop is arranged in each construction joint.

7. The storage-regulating pressure-regulating automatic silt-flushing hole-free structure according to claim 1, characterized in that: the vent hole is provided with a shutter to prevent external sundries from entering the tunnel.

8. The storage-regulating pressure-regulating automatic silt-flushing hole-free structure according to claim 3, characterized in that: the manhole adopts a steel pipe.

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