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Branch dam dismantling habitat replacement and restoration method in main and branch hydropower development basin

A technology for hydropower development and repair methods, applied in complex mathematical operations, electrical digital data processing, instruments, etc.

Active Publication Date: 2020-09-11
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of the living environment of fish in the hydropower development basin of the main and tributary streams in the prior art, the present invention provides a method for replacing and restoring the dam habitat of the tributaries in the hydropower development basin of the main and tributary streams. By comprehensively assessing the fish habitat recovery potential and potential loss of dam removal in tributary streams, selecting hydropower stations with good ecological benefits and low potential losses, and implementing fish habitat replacement and restoration technologies for main stream development and tributary dam removal, the present invention can While ensuring the development of mainstream hydropower, provide natural migration channels for fish to achieve the purpose of protecting fish germplasm resources

Method used

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  • Branch dam dismantling habitat replacement and restoration method in main and branch hydropower development basin
  • Branch dam dismantling habitat replacement and restoration method in main and branch hydropower development basin
  • Branch dam dismantling habitat replacement and restoration method in main and branch hydropower development basin

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Embodiment 1

[0050] Embodiment 1: A method for habitat replacement and restoration of tributary dam demolition in the hydropower development basin of main and tributary streams, the specific steps are as follows:

[0051] (1) According to the habitat conditions required for the survival, reproduction and foraging of migratory fish, establish an evaluation index system for the fish habitat recovery potential after tributary dam demolition. loss, establish a dam demolition-loss assessment index system;

[0052] The evaluation index system of fish habitat restoration potential after tributary dam demolition (see Table 1) evaluates the fish habitat restoration potential P after tributary dam demolition, and its sub-objectives include basic river conditions A, hydrological and water environment factors B, fish habitat Category diversity C, topographic and landform conditions D and environmental stability E; indicators of basic river conditions A include river length A1, number of tributaries A2...

Embodiment 2

[0210] Embodiment 2: take the Nanla River, a first-order tributary of the Lancang River (see figure 1 ) as an example, a method for habitat replacement and restoration of tributary dam removal in the hydropower development basin of main and tributary streams is described in detail;

[0211] Overview of the study area: the Nanla River belongs to the Lancang River system and is the last tributary of the Lancang River in China. The Nanla River has a total length of 184km and a catchment area of ​​4563km 2 , with 136 large and small tributaries; the natural environment in the Nanla River basin is excellent, and there are two national nature reserves in the basin, which is one of the areas with the most national nature reserves and the richest aquatic wildlife in Xishuangbanna Prefecture; There are few human activities and less pollution in the area. There are Jinfeng Hydropower Station and Dashaba Reservoir built on the main stream of the river. Among them, Jinfeng Hydropower Stat...

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Abstract

The invention relates to a method for replacing and repairing a branch dam dismantling habitat in a main and branch hydropower development basin. The method comprises the following steps: establishingan evaluation index system and a dam removal-loss evaluation index system of fish habitat recovery potential after branch dam removal; investigating tributary fish populations, hydrological and geographical conditions, natural disaster conditions and hydropower station conditions in the target drainage basin, and collecting data; calculating each index weight in the evaluation index system of thefish habitat recovery potential after branch dam removal and the fish habitat recovery potential P value after branch dam removal, and predicting the fish habitat recovery potential after branch damremoval; calculating an index weight and a dam dismounting potential loss L value in the dam dismounting-loss evaluation index system, and comprehensively evaluating the potential loss after the powerstation is dismounted; calculating a feasibility score PF of the tributary dam dismantling habitat substitution scheme, if PF is greater than 60, selecting the highest score to dismantle the dam, andafter implementing tributary dam dismantling, performing fish population and habitat environment investigation on the branch to repair the fish habitat of the branch river reach.

Description

technical field [0001] The invention relates to a habitat replacement and restoration method for dismantling dams in tributary streams in hydropower development basins, and belongs to the technical field of ecological protection for hydropower development in basins. Background technique [0002] Hydropower is often considered as an important way to obtain green energy, but the development of river hydropower energy in my country is dominated by small and medium hydropower stations in terms of quantity. Since the development of small hydropower stations in the tributaries of large river basins was earlier than that in the main river, and the capital investment of small hydropower projects was relatively small, and they were put into operation quickly, there were too many small hydropower stations in the tributaries, and the phenomenon was too dense. As the construction technology of high dams and large reservoirs in my country is becoming more and more mature, large-scale hyd...

Claims

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Application Information

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IPC IPC(8): G06F17/10G06Q10/06G06Q50/06G06Q50/26
CPCG06F17/10G06F2219/10G06Q10/06312G06Q10/0639G06Q50/06G06Q50/26
Inventor 袁旭陆颖赖红肖复晋苏彦李亚王海龙祁昌军
Owner YUNNAN UNIV
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