China Three Gorges Corporation

China Three Gorges University

China Institute of Water Resources and Hydropower Research

Chang Jiang River Scientific Research Institute

Hohai University

China Three Gorges Co., Ltd.

Dingguo Jiang

Hao Wang

Wei Liu

Gang Wang

Huichao Dai

Hanqing Zhao

Yu Wang

Chengxiao Zhang

Chao Yang

Jie Dai

Yunzhong Jiang

Xiaotao Shi

Yijun Zhao

Jinqiao Mao

Junjun Tan

Ping Ji

Qingqing Li

Yafei Duan

Jijun Xu

Zhiwu Liu

Zhenbiao Liu

Zhengjie Yin

Chunhua Yang

Lei Chen

Peipei Zhang

Jingqiao Mao

Ran Zhai

Shijie Zhu

Kang Wang

Yanhong Chen

Dinghua Meng

Boyu Mi

Lingling Wang

Xuting Yang

Qingqing Chen

Guiwen Rong

Tiegang Zheng

Pei Duan

Ling Shang

Xiaofei Li

Yizi Shang

Xiufeng Quan

Yanwei Zhai

Peng Zou

Qinghui Zeng

Xiaoting Liu

Peng Hu

A water-replenishing fishway with an adaptively-adjusted floating dock is provided. The water-replenishing fishway comprises a fishway body, wherein the bottom of the fishway body is rotationally connected with a floating dock structure, an auxiliary swimming structure is arranged inside the fishway body, and an adjusting structure used to adjust the auxiliary swimming board of the auxiliary swimming structure is arranged on said floating dock structure. The fishway body is excavated with a sliding groove fitting with the sliding block, a first spring is arranged between the sides of the sliding groove and the sliding block, and the bottom of the sliding block is articulated with a roller, which is in contact with the surface of the moving plate of the adjusting structure.

Water-replenishing fishway with adaptively-adjusted floating dock

The present invention relates to a method for calculating a head loss coefficient and branch pipe flow distribution of a multi-point water intake. The method includes the following steps: inputting and determining a structure and size information of the multi-point water intake; determining a head loss coefficient; determining a head loss coefficient form of a confluence port; pre-estimating or adjusting a trial flow; performing trial calculation on the head loss coefficient of each branch pipe; comparing the head losses calculated by two flow paths; and carrying out overall calculation. According to the present invention, the flow of each branch pipe is adjusted and the head loss coefficient is repeatedly calculated by utilizing iterative calculation of the head loss coefficients of the flows in two directions, so that the head loss and the flow distribution proportion can be finally and accurately calculated.

Method for calculating head loss coefficient and branch pipe flow distribution of multi-point water intake

The present disclosure discloses a buffering fishway suitable for emergent flood discharge with reduction in damage and a buffering method thereof. The buffering fishway includes a fishway body, wherein a migration passage is arranged inside the fishway body, one end of which is rotationally connected with a fixing base, and the other end of which is rotationally connected with a counterweighting floating dock, and a plurality of buffering plates capable of swinging are hinged inside the migration passage, furthermore, the present disclosure also provides a buffering method corresponding to it. The present disclosure effectively reduces the potential energy of the flood and weakens the impact force on the fish. Therefore, the gate dam having this design effectively avoids the fish in the fishway from being fiercely impacted by the flood and easily resulting in damage during discharging flood, having a high protective effect on the fish.

Buffering fishway suitable for emergent flood discharge with reduction in damage and buffering method thereof

A main stream reservoir ecological modulation method considering incoming water from interval tributaries is provided. The method determines the contribution ratio of the incoming water from interval tributaries to first-day's water rising in a high-flow surge process and when to start ecological modulations of spawning ground sections, determines a river course routing method after a main stream and its tributaries joining and calibrating parameters, based on past hydrological data, performing river flow calculation on the discharge volume of upstream reservoirs and the flow after interval tributaries joining, and determines a main stream reservoir ecological modulation mode considering incoming water from interval tributaries.

Main stream reservoir ecological modulation method considering incoming water from interval tributaries

Growing community of inventors

Beijing, China

Dingguo Jiang