CN211256915U - Water collecting well arrangement structure of underground powerhouse of hydropower station - Google Patents

Water collecting well arrangement structure of underground powerhouse of hydropower station Download PDF

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Publication number
CN211256915U
CN211256915U CN201920904421.5U CN201920904421U CN211256915U CN 211256915 U CN211256915 U CN 211256915U CN 201920904421 U CN201920904421 U CN 201920904421U CN 211256915 U CN211256915 U CN 211256915U
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China
Prior art keywords
drainage
water collecting
collecting well
well
underground
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CN201920904421.5U
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Inventor
万祥兵
叶辉辉
陈鹏
方丹
补约依呷
李良权
程普
邵兵
赵修龙
陈登义
洪佳敏
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PowerChina Huadong Engineering Corp Ltd
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PowerChina Huadong Engineering Corp Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

Abstract

The utility model relates to a power station underground factory building sump pit arrangement structure. The utility model aims at providing a simple structure, construction convenience's power station underground factory building sump pit arrangement structure to alleviate factory building country rock stable problem. The technical scheme of the utility model is that: the utility model provides a power station underground powerhouse sump pit arrangement structure, has underground powerhouse, sump pit and bottom drainage corridor, its characterized in that: the water collecting well is arranged outside the underground workshop and is connected to a bottom drainage gallery, and a drainage main pipe of the underground workshop is communicated with the bottom drainage gallery at the upstream of the water collecting well through the drainage main gallery and is communicated with the water collecting well through the bottom drainage gallery; a drainage pipe well is arranged at the upstream side of the water collecting well and is communicated with a downstream river channel through an upper drainage gallery and a self-flowing drainage hole; and a pumping and drainage mechanism capable of pumping and draining the collected water in the water collecting well into the drainage pipe well is arranged between the water collecting well and the drainage pipe well. The utility model is suitable for a hydraulic and hydroelectric engineering technical field.

Description

Water collecting well arrangement structure of underground powerhouse of hydropower station
Technical Field
The utility model relates to a power station underground factory building sump pit arrangement structure. Is suitable for the technical field of water conservancy and hydropower engineering.
Background
With the continuous development of the conventional hydropower construction in China to the southwest region, the conventional hydropower station is influenced by factors such as the topographic and geological conditions of deep river valleys, the arrangement pattern of hubs and the like, and a plurality of hydropower stations adopt underground powerhouse arrangement schemes. The geological conditions of the western deep-buried underground caverns are generally complex, but the scale of the underground caverns is larger and larger, and the span reaches 25-35 m and the height reaches 70-90 m to large-scale hydropower station underground powerhouses such as a family dam, a river ludu, a brocade screen first-level and a brocade screen second-level. For deep buried underground engineering under complex geological conditions, the problem of large-span high-side wall surrounding rock stability is the key to successful engineering construction. Therefore, how to reduce the height of the side wall of the underground powerhouse at the level of design and arrangement is the fundamental method for ensuring the stability of the surrounding rock.
The water collection well in the underground powerhouse is usually arranged at the lowest position of the plant area as the final collection place for the drainage of the plant area. Due to the arrangement requirement and the construction convenience, designers often arrange the water collecting wells inside the underground plant, and the maximum value of the height of the underground plant basically appears in the range of the water collecting wells. The problems of roof arch and side wall surrounding rock stability of underground plant chambers in the range of a water collecting well are prominent for large-span high-side wall underground plants with complex geological conditions.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: aiming at the problems, the water collecting well arrangement structure of the hydropower station underground powerhouse with simple structure and convenient construction is provided to reduce the stability problem of the surrounding rocks of the powerhouse.
The utility model adopts the technical proposal that: the utility model provides a power station underground powerhouse sump pit arrangement structure, has underground powerhouse, sump pit and bottom drainage corridor, its characterized in that:
the water collecting well is arranged outside the underground workshop and is connected to a bottom drainage gallery, and a drainage main pipe of the underground workshop is communicated with the bottom drainage gallery at the upstream of the water collecting well through the drainage main gallery and is communicated with the water collecting well through the bottom drainage gallery;
a drainage pipe well is arranged at the upstream side of the water collecting well and is communicated with a downstream river channel through an upper drainage gallery and a self-flowing drainage hole;
and a pumping and drainage mechanism capable of pumping and draining the collected water in the water collecting well into the drainage pipe well is arranged between the water collecting well and the drainage pipe well.
The inside of the water collecting well is divided into a seepage water collecting well positioned on the upstream side and a maintenance water collecting well positioned on the downstream side, wherein the seepage water collecting well is communicated with a bottom drainage gallery on the upstream side of the water collecting well; the overhaul water collecting well is communicated with the unit overhaul water discharge pipe of the underground workshop through an overhaul water discharge gallery, and the overhaul water discharge gallery is inclined from the underground workshop end to the overhaul water collecting well end.
The water pumping and draining mechanism is provided with a water pump.
The utility model has the advantages that: the utility model reduces the height of the side wall of the plant in part of the tunnel section by arranging the water collecting well outside the underground plant, thereby fundamentally reducing the problem of stability of the surrounding rock of the plant; meanwhile, the auxiliary chambers are arranged to meet the water collecting and draining function of the water collecting well.
Drawings
Fig. 1 is a plan view of the arrangement of the present embodiment.
Fig. 2 is a sectional view of the arrangement of the present embodiment.
Detailed Description
As shown in fig. 1 and 2, the present embodiment is a water collecting well arrangement structure of an underground powerhouse of a hydropower station, which comprises an underground powerhouse 1, a water collecting well 2, a bottom drainage gallery 3, a main drainage gallery 4, an inspection drainage gallery 5, a drainage well 6, a seepage water collecting well 7 and an inspection water collecting well 8.
The water collecting well 2 is arranged outside the underground workshop 1 and is connected to the bottom drainage gallery 3, and the water collecting well 2 is connected with the underground workshop 1 through the overhaul drainage gallery 5; the bottom drainage gallery 3 at the upper part of the water collecting well 2 is communicated with the drainage main pipe of the underground workshop 1 through the drainage main pipe gallery 4, and the drainage main pipe is buried in the bottom plate concrete from the underground workshop 1 through the drainage main pipe gallery 4 and the bottom drainage gallery 3.
The interior of the water collecting well 2 is divided into a seepage water collecting well 7 positioned at the upstream side and a maintenance water collecting well 8 positioned at the downstream side, wherein the seepage water collecting well 7 is communicated with the bottom drainage gallery 3 at the upstream side of the water collecting well 2; the inspection water collecting well 8 is communicated with a unit inspection drain pipe of the underground workshop 1 through an inspection drain gallery 5, and the inspection drain gallery is inclined from the end of the underground workshop 1 to the end of the inspection water collecting well 8.
The drainage pipe well 6 is arranged at the upstream side of the water collecting well 2, and the drainage pipe well 6 is communicated with a downstream river channel through an upper drainage gallery and a gravity drainage hole; a pumping and drainage mechanism which can pump and drain the collected water in the water collecting well 2 into the drainage pipe well 6 is arranged between the water collecting well 2 and the drainage pipe well 6, and the pumping and drainage mechanism is provided with a water pump.
In the embodiment, the surrounding rock seepage water of the underground powerhouse 1 is concentrated and collected to the main drainage pipe, and is directly drained into the side seepage water collecting well 7 through the main drainage pipe gallery 4 and the bottom drainage gallery 3; the unit maintenance drainage is converged into a maintenance water collecting well 8 from the underground workshop 1 through a maintenance drainage gallery 5; the collected water in the water collecting well 2 is sent to an upper drainage gallery through a water pump and a drain well 6, and finally is discharged to a downstream river channel through a self-flowing drainage hole.

Claims (3)

1. The utility model provides a power station underground factory building sump pit arrangement structure, has underground factory building (1), sump pit (2) and bottom drainage corridor (3), its characterized in that:
the water collecting well (2) is arranged outside the underground workshop (1) and is connected to a bottom drainage gallery (3), and a drainage main pipe of the underground workshop (1) is communicated with the bottom drainage gallery (3) at the upstream of the water collecting well (2) through a drainage main gallery (4) and is communicated with the water collecting well (2) through the bottom drainage gallery (3);
a drainage pipe well (6) is arranged on the upstream side of the water collecting well (2), and the drainage pipe well (6) is communicated with a downstream river channel through an upper drainage gallery and a gravity drainage hole;
and a pumping and drainage mechanism capable of pumping and draining the collected water in the water collecting well (2) into the drainage pipe well (6) is arranged between the water collecting well (2) and the drainage pipe well (6).
2. The arrangement of the water collection well of the underground powerhouse of the hydropower station according to claim 1, wherein: the interior of the water collecting well (2) is divided into a seepage water collecting well (7) positioned on the upstream side and a maintenance water collecting well (8) positioned on the downstream side, wherein the seepage water collecting well (7) is communicated with a bottom drainage gallery (3) on the upstream side of the water collecting well (2); the overhaul water collecting well (8) is communicated with the unit overhaul water discharge pipe of the underground plant (1) through an overhaul water discharge gallery (5), and the overhaul water discharge gallery is inclined from the end of the underground plant (1) to the end of the overhaul water collecting well (8).
3. The arrangement of the water collection well of the underground powerhouse of the hydropower station according to claim 1 or 2, wherein: the water pumping and draining mechanism is provided with a water pump.
CN201920904421.5U 2019-06-17 2019-06-17 Water collecting well arrangement structure of underground powerhouse of hydropower station Active CN211256915U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920904421.5U CN211256915U (en) 2019-06-17 2019-06-17 Water collecting well arrangement structure of underground powerhouse of hydropower station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920904421.5U CN211256915U (en) 2019-06-17 2019-06-17 Water collecting well arrangement structure of underground powerhouse of hydropower station

Publications (1)

Publication Number Publication Date
CN211256915U true CN211256915U (en) 2020-08-14

Family

ID=71957193

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920904421.5U Active CN211256915U (en) 2019-06-17 2019-06-17 Water collecting well arrangement structure of underground powerhouse of hydropower station

Country Status (1)

Country Link
CN (1) CN211256915U (en)

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