CN214116673U

CN214116673U - Dam foundation or reservoir bottom drainage observation corridor closed drainage structure

Info

Publication number: CN214116673U
Application number: CN202022842766.8U
Authority: CN
Inventors: 黄维; 王樱畯; 赵琳; 姜忠见
Original assignee: PowerChina Huadong Engineering Corp Ltd
Current assignee: PowerChina Huadong Engineering Corp Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-09-03
Anticipated expiration: 2030-11-30

Abstract

The utility model discloses a dam foundation or reservoir bottom drainage observation corridor seals drainage structures aims at overcoming among the prior art to concrete dam, the earth and rockfill dam foundation that sets up the drainage observation corridor, or the pumped storage power station reservoir bottom of full storehouse basin prevention of seepage, arranges the infiltration to the corridor through the wash port for comparatively moist in the corridor, the relatively poor problem of condition is examined in the fortune. The structure is including the drainage observation corridor, the drainage observation corridor be equipped with the corridor wash port, the bottom surface both sides of drainage observation corridor are equipped with the escape canal, are equipped with the drainage catchment pipe in the escape canal, are equipped with the wall drain pipe on the inner wall of drainage observation corridor, wall drain pipe intercommunication corridor wash port and drainage catchment pipe, the drainage is observed the corridor junction and is sectionally set up the weir.

Description

Dam foundation or reservoir bottom drainage observation corridor closed drainage structure

Technical Field

The utility model relates to a dam foundation drainage structures technical field of water and electricity hydraulic engineering especially relates to a dam foundation reservoir bottom drainage is surveyd corridor and is sealed drainage structures.

Background

A drainage observation corridor is generally arranged at the dam foundation of a concrete dam or an earth-rock dam or the bottom of a full-reservoir seepage-proofing pumped storage power station so as to meet the requirements of draining seepage water of a dam body or a reservoir basin, safety monitoring and inspection tour inspection of operation period operation staff. The water seepage from the drain holes to the gallery keeps the air humidity in the gallery at a high level, so that the laid cables, safety monitoring facilities and the like are in a humid or even submerged state for a long time, and the service life of the cables, the safety monitoring facilities and the like is seriously influenced. Meanwhile, the floor of the corridor with water accumulated locally and moisture causes great inconvenience for the daily inspection work of the personnel. How to properly treat the seepage drained to the gallery through certain measures to keep a dry environment in the gallery and create good conditions for operation and maintenance is an important technology in hydropower engineering.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at overcoming among the prior art to concrete dam, the earth and rockfill dam foundation that sets up the drainage and survey the corridor, or the pumped storage power station bottom of the reservior basin prevention of seepage of whole storehouse, arrange the infiltration to the corridor through the wash port for comparatively moist in the corridor, the relatively poor problem of condition is examined in the fortune, provide the construction convenient, safe and reliable seals drainage structures, keep dry environment in making the corridor, for the operation overhauls a dam foundation or the bottom of the storehouse drainage of creating good condition survey the corridor and seal drainage structures.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model discloses a dam foundation or reservoir bottom drainage are surveyd corridor and are sealed drainage structures, survey the corridor including the drainage, the drainage survey the corridor and be equipped with the corridor wash port, the bottom surface both sides of corridor are surveyd in the drainage are equipped with the escape canal, are equipped with the drainage catchment pipe in the escape canal, are equipped with the wall drain pipe on the inner wall of corridor is surveyd in the drainage, wall drain pipe intercommunication corridor wash port and drainage catchment pipe, the drainage is surveyd corridor intersection segmentation and is set up the weir.

Preferably, the drainage and catchment pipe is disconnected at the front end of the water measuring weir of not less than 150cm and at the rear end of the water measuring weir of not less than 50cm, and a concrete plug is arranged at the disconnected port of the drainage and catchment pipe.

Preferably, the concrete plugs are respectively made of plain concrete with the thickness of 10cm and the mark number of not less than C25.

Preferably, a transparent moisture-proof protective cover is arranged above the concrete plug.

Preferably, the wall drain pipe is provided with a drain pipe fixing piece, and the wall drain pipe is fixed on the inner wall surface of the drainage observation corridor through the drain pipe fixing piece.

Preferably, the corridor drain holes are formed in the top wall and the two side walls of the drainage observation corridor, and the wall drain pipe is provided with a drain pipe two-way or a drain pipe three-way connected with the corridor drain holes.

The utility model has the advantages that: 1. a closed drainage structure is arranged in a reservoir bottom drainage observation corridor of a pumped storage power station for seepage prevention of a dam foundation or a full reservoir basin, so that a dry environment is kept in the corridor, and good working conditions are created for operation and maintenance personnel; 2. the dry environment in the corridor ensures that the safety monitoring facilities and the laid cables can perform normal functions, and the service life of the instrument and equipment is prolonged; 3. the transparent organic glass drain pipe has good visualization effect; the measuring weir arranged in sections can effectively measure the water seepage change condition in the gallery; 4. the transparent organic glass tube has low cost and convenient installation and replacement, and if the water seepage amount of individual drainage holes is increased in the operation period, the organic glass tube with larger diameter can be replaced in time; if the drain pipe is damaged locally in the operating period, the drain pipe can be replaced in time.

Drawings

Fig. 1 is a typical sectional view of the closed drainage structure of the dam foundation or the reservoir bottom drainage observation gallery of the present invention.

Fig. 2 is a cross-sectional view a-a of fig. 1.

Fig. 3 is a partial enlarged view of the closed drainage structure of the dam foundation or the reservoir bottom drainage observation gallery of the present invention.

Fig. 4 is a cross-sectional view of B-B of fig. 3.

The figure is marked with: 1. a drainage observation corridor; 101. a drainage ditch; 2. a gallery drain hole; 3. a wall surface drain pipe; 4. a water drainage and collection pipe; 5. a drain pipe fixing member; 601. the drain pipe is a two-way pipe; 602. a drain pipe tee joint; 7. a measuring weir; 8. a concrete plug; 9. a moisture-proof protective cover; 10. indicating the water seepage waterline.

Detailed Description

The invention is further described with reference to the accompanying drawings and the detailed description.

As shown in fig. 1, 2, the utility model discloses a gallery closed drainage structure is surveyd in dam foundation or reservoir bottom drainage, survey gallery 1 including the drainage, the drainage survey gallery 1 be equipped with gallery wash port 2, the bottom surface both sides of gallery 1 are surveyd in the drainage are equipped with escape canal 101, are equipped with drainage catchment pipe 4 in the escape canal 101, are equipped with wall drain pipe 3 on the inner wall of gallery 1 is surveyd in the drainage, wall drain pipe 3 intercommunication gallery wash port 2 and drainage catchment pipe 4, gallery 1 intersection is surveyd in the drainage segmentation sets up gauging weir 7.

As shown in fig. 3 and 4, the drainage observation gallery 1 is provided with a water measuring weir 7 in sections to monitor water seepage change, the drainage catchment pipe 4 in the drainage ditch 101 is disconnected at the position 5m upstream of the section intersection of the drainage observation gallery 1, and the water measuring weir 7 and a matched water gauge are arranged in a reserved range not less than 2.0 m.

The drainage and catchment pipe 4 is disconnected at the front end of the water measuring weir 7 which is not less than 150cm and the rear end of the water measuring weir 7 which is not less than 50cm, and a concrete plug 8 is arranged at the disconnected port of the drainage and catchment pipe 4. The concrete plugs 8 are respectively made of plain concrete with the thickness of 10cm and the mark number not lower than C25. The width of the concrete plug is equal to that of a drainage channel of the drainage observation gallery, and the top of the concrete plug is 5-10 cm higher than the drainage channel. For convenience of explanation, the schematic water seepage waterline 10 is identified in the water measuring weir 7 in the attached drawing 3, and the schematic water seepage waterline 10 is not actually arranged on the construction site. A transparent moisture-proof protective cover 9 is arranged above the concrete plug 8.

As shown in fig. 2, the wall surface drain pipe 3 is provided with a drain pipe fixing member 5, and the wall surface drain pipe 3 is fixed on the inner wall surface of the drainage observation corridor 1 through the drain pipe fixing member 5. The corridor drain holes 2 are arranged on the top wall and the two side walls of the drainage observation corridor 1, and the wall drain pipe 3 is provided with a drain pipe two-way and a three-way pipe 6 which is connected with the corridor drain holes 2.

The drain pipe fixing part 5 is made of stainless steel strips, one stainless steel strip with the length of 400mm, the width of 20mm and the thickness of 1mm is arranged every 80 cm-100 cm to fix the wall body drain pipe 3 and the drain catchment pipe 4, and the stainless steel strips are fixed by shooting nails.

The technical scheme of the utility model the bottom of the reservoir drainage of pumped storage power station that dam foundation or full storehouse basin were prevented seepage is surveyd and is set up and seal drainage structure in the corridor, makes keep dry environment in the corridor, creates good operating condition for operation maintainer. The dry environment in the corridor ensures that the safety monitoring facilities and the laid cables can perform normal functions, and prolongs the service life of the instrument and equipment. The transparent organic glass drain pipe has good visualization effect; the measuring weir arranged in segments can effectively measure the water seepage change condition in the gallery. The transparent organic glass tube has low cost and convenient installation and replacement, and if the water seepage amount of individual drainage holes is increased in the operation period, the organic glass tube with larger diameter can be replaced in time; if the drain pipe is damaged locally in the operating period, the drain pipe can be replaced in time.

Claims

1. The utility model provides a gallery seals drainage structures is surveyd in dam foundation or storehouse bottom drainage, surveys gallery (1) including the drainage, drainage survey gallery (1) be equipped with gallery wash port (2), the bottom surface both sides of gallery (1) are surveyd in the drainage are equipped with escape canal (101), characterized by is equipped with drainage catchment pipe (4) in escape canal (101), is equipped with wall drain pipe (3) on the inner wall of gallery (1) is surveyd in the drainage, wall drain pipe (3) intercommunication gallery wash port (2) and drainage catchment pipe (4), the drainage is surveyd gallery (1) intersection segmentation and is set up weir (7).

2. The dam foundation or the reservoir bottom drainage observation corridor closed drainage structure as claimed in claim 1, wherein the drainage catchment pipe (4) is disconnected at the front end of the water measuring weir (7) by not less than 150cm and at the rear end of the water measuring weir by not less than 50cm, a concrete plug (8) is arranged outside the disconnected port of the drainage catchment pipe (4), and the concrete plug (8) plugs the gap between the drainage catchment pipe (4) and the drainage ditch (101).

3. The dam foundation or reservoir bottom drainage observation corridor closed drainage structure as claimed in claim 2, wherein the concrete plugs (8) are respectively made of plain concrete with a thickness of 10cm and a mark number of not less than C25.

4. A dam foundation or reservoir bottom drainage observation corridor closed drainage structure as claimed in claim 2, wherein a transparent moisture-proof protective cover (9) is provided above the concrete plug (8).

5. The dam foundation or the closed drainage structure of the reservoir bottom drainage observation corridor as claimed in claim 1, wherein the wall surface drainage pipe (3) is provided with a drainage pipe fixing member (5), and the wall surface drainage pipe (3) is fixed on the inner wall surface of the drainage observation corridor (1) through the drainage pipe fixing member (5).

6. The dam foundation or the reservoir bottom drainage observation corridor closed drainage structure as claimed in claim 1, wherein the corridor drainage holes (2) are arranged on the top wall and the two side walls of the drainage observation corridor (1), and the wall surface drainage pipe (3) is provided with a drainage pipe two-way (601) or a drainage pipe three-way (602) which is connected with the corridor drainage holes (2).