China Three Gorges Corporation

China Institute of Water Resources and Hydropower Research

Hohai University

China Three Gorges University

Chang Jiang River Scientific Research Institute

China Three Gorges Co., Ltd.

Huichao Dai

Hao Wang

Dingguo Jiang

Hanqing Zhao

Chao Wang

Zhao Zhang

Zhaohui Yang

Xiaotao Shi

Yongnan Zhu

Xiaohui Lei

Junjun Tan

Jinqiao Mao

Tao Wang

Wei Liu

Yu Wang

Heng Yang

Gang Wang

Xinlei Guo

Jie Dai

Yunzhong Jiang

Chao Yang

Chengxiao Zhang

Yijun Zhao

Jiawei Xu

Hui Fu

Yongxin Guo

Jiajia Pan

Ping Ji

Jiazhen Li

Jijun Xu

Qingqing Li

Lei Chen

Hanmei Li

Yiqing Gong

Yafei Duan

Lingzhong Kong

Chunhua Yang

Zhengjie Yin

Zhiwu Liu

Zhenbiao Liu

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

A method for predicting and controlling a water level of a series water conveyance canal on the basis of a fuzzy neural network is disclosed. The method includes: performing the relationship between a sluice opening degree and an open canal control water level by means of a fuzzy neural network, and constructing an upstream water level controller of a coupled predictive control algorithm; solving an optimal control rate of the upstream water level controller using a gradient optimization algorithm on the basis of a control target of the upstream water level controller; and generating a control strategy by collecting actually measured water level change information and multiplying the actually measured water level change information by the optimal control rate on the basis of the solved optimal control rate, thereby fulfilling the object of predicting and controlling the water level.

Method for predicting and controlling awater level of a series water conveyance canal on a basis of a fuzzy neural network

The present invention has disclosed a movable water-permeable pile spur dike and an operation method thereof. The pile spur dike includes a fixed rail, a plurality of movable rails, a plurality of movable water-permeable piles, pressure sensors, flow meters and a control platform, wherein the plurality of movable water-permeable piles are arranged on the fixed rail and the plurality of movable rails, the pressure sensor and the flow meter are arranged at each monitoring point on the outer side wall of each movable water-permeable pile, the control platform is used for analysis and calculation according to the monitoring data from each pressure sensor and each flow meter and adjusts the positions of each movable rail and each movable water-permeable pile, so that the water flow velocity and spur dike's pressure at each monitoring point are less than a corresponding flow velocity threshold value and pressure threshold value.

Movable water-permeable pile spur dike and operation method thereof

The invention discloses a biological water-quality detection method using said obstructive multi-module biological water-quality detection device. This device includes an obstruction index-selecting device and a water-quality testing device, wherein the obstruction index-selecting device is used to select a qualified or valid stepped obstruction level combination, the water-quality testing device detects the water-quality of the water body to be tested depending on the behavior at each obstruction in the valid obstruction level combination after injecting indicator organisms into the water body to be tested. The relationship between the degree of water pollution and the distribution area of indicator organisms is established and the distribution area of indicator organisms is counted in this method based on the difference between the behaviors of indicator organisms in the clean water body and the polluted water body count, so as to determine the degree of water pollution. The invention can accurately and quickly detect the degree of water body pollution, does not need the processes such as chemical analysis and physical detection, and has the advantages of low cost, fast operation and accurate results, etc.

Biological water-quality detection method using obstructive multi-module biological water-quality detection device

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 real-time abnormity-diagnosing and interpolation method for water regime-monitoring data relates to the technical field of monitoring water regime. This method includes the following steps: acquiring water regime-monitoring data, drawing a box plot, recognizing and diagnosing abnormal data in real time based on the box plot, performing grey correlation analysis on other variables related to a predictor variable, building a BP neural network model and making training, applying the BP neural network model to predict water regime-monitoring data in real time, and performing abnormity diagnosis and data interpolation. Adopting this method, we can effectively enhance predicting and monitoring the water regime-monitoring data in real time, and diagnose abnormal data and make interpolations in time, thereby improving the reliability of data, objectively reflecting water regime changes, and effectively guiding engineering scheduling.

Real-time abnormity-diagnosing and interpolation method for water regime-monitoring data

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

The present invention relates to a variable-flow-path air valve for water hammer prevention and a design method. The variable-flow-path air valve includes a valve body with a top provided with an air intake-exhaust port. A ball valve seat and a floating ball are arranged below the air intake-exhaust port. The valve body is provided with at least one swing check valve configured to be opened inward. The swing check valve includes: a swing valve disc connected to a valve body hinge, a variable-flow-path air inlet controlled by the swing valve disc to open and close, a device for limiting the opening degree of the swing valve disc, and a sealing device. In the present invention, the air valve takes in air through the air intake-exhaust port and the variable flow path, and discharges air only through the air intake-exhaust port.

Variable-flow-path air valve for water hammer prevention and a design method

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Beijing, China

Huichao Dai