Diversion construction method of wide-riverbed dam type hydropower station

A construction method and technology of hydropower stations, applied in hydropower stations, water conservancy projects, hydroelectric power generation, etc., can solve the problems of long duration of the total construction period of the project or the duration of the power generation construction period, and achieve the effect of shortening the total construction period and large selectivity

Active Publication Date: 2013-01-30
POWERCHINA HUADONG ENG COPORATION LTD
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Problems solved by technology

For hub projects arranged according to conventional construction diversion methods, diversion buildings are usually built in the first stage of diversion, and key projects that control the total constructio

Method used

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  • Diversion construction method of wide-riverbed dam type hydropower station
  • Diversion construction method of wide-riverbed dam type hydropower station

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Example Embodiment

[0015] This embodiment is a diversion construction method of a wide riverbed dam-type hydropower station. In the first phase of the diversion phase of the hydropower station pivot project, diversion buildings are arranged on the left and right banks of the river, except for the diversion buildings 7 (such as diversion structures). The upstream and downstream of the open channel or diversion tunnel) are arranged outside the inlet and outlet cofferdams, and at the same time, some cofferdams will be implemented in advance in the upstream and downstream main cofferdams of the second-stage diversion around key projects (such as dams or powerhouses). While constructing diversion buildings 7 (such as open diversion channels or diversion tunnels), some key projects of the project (such as dams or powerhouses 2) were constructed in advance, creating favorable conditions for the early construction of key projects of hydropower projects.

[0016] The specific construction method of this embo...

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Abstract

The invention relates to a diversion construction method of a wide-riverbed dam type hydropower station, aiming at providing a diversion construction method of the wide-riverbed dam type hydropower station for shortening the total time limit of hydraulic power station engineering. According to the technical scheme provided by the invention, the method comprises the following steps: a, firstly building a diversion building on one side of a riverway; b, while building the diversion building, carrying out temporary cofferdam construction on a riverbed on the other side of the riverway; c, after the temporary cofferdam construction is finished, surrounding a foundation pit by a temporary cofferdam and riversides for discharging water, and carrying out construction on a large dam; d, after the diversion building has overflowing conditions, extending the upper reach and the lower reach of the temporary cofferdam to the other side of the riverway so as to form an upper reach main cofferdam and a lower reach main cofferdam; e, discharging water in the foundation pit between the upper reach main cofferdam and the lower reach main cofferdam to form a dry construction environment; and f, carrying out full-scale construction of the large dam or a factory building between the upper reach main cofferdam and the lower reach main cofferdam. The diversion construction method is suitable for the pivotal arrangement design and construction of the arrangement in a stage diversion manner adopted by the wide-riverbed dam type hydropower station.

Description

Technical field [0001] The invention relates to a diversion construction method of a dam-type hydropower station on a wide river bed. It is suitable for the layout design and construction of the dam-type hydropower station on the wide river bed that adopts the staged diversion method. Background technique [0002] When arranging a dam-type hydropower station in a wide river bed, when the construction diversion chooses the staged diversion method, the conventional construction is to divide the diversion into several phases in time, and use cofferdams to divide the hydraulic structure into several sections in space , The construction of the hub project will be completed stage by stage. For hub projects arranged according to the conventional construction diversion method, the first-stage diversion usually builds diversion buildings, and the key projects that control the total construction period of the project are generally implemented in the second or third-stage diversion. This c...

Claims

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Application Information

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IPC IPC(8): E02B9/00
CPCY02E10/22Y02E10/20
Inventor 陈义军叶建群任金明吕国轩董宝顺
Owner POWERCHINA HUADONG ENG COPORATION LTD
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