Medium and small reservoirs comprehensive informationization (reservoir dynamic supervision) system solution

The degree of reservoir safety has always been the difficulty and focus of flood prevention and flood control in our country. Most small and medium-sized reservoirs lack necessary facilities such as water and rain forecasting and dam safety monitoring. The inspection methods are backward and the hidden dangers are huge. The reservoir safety problem needs to be solved urgently.

The DIT-DAMS-3000 Medium and Small Reservoir Integrated Information System realizes automatic monitoring of rainfall, water level, dam seepage pressure, seepage, and saturation line reservoirs, provides timely and accurate information for reservoir safety management and operation scheduling, and timely warning. Provide the basis for relevant departments and leaders to make scientific decisions and improve the efficiency and quality of reservoir project management.

The small and medium-sized reservoir comprehensive information system adopts advanced techniques such as distributed dam safety monitoring and close-range wireless communication network, effectively reducing costs, and improving system reliability. It is suitable for information construction of small and medium-sized reservoirs and reservoirs for monitoring and reinforcement of disasters.

System Overview

The small and medium-sized reservoir comprehensive information system consists of four parts: the on-site measurement part, the remote terminal acquisition unit MCU, the dam safety data acquisition system, the information processing query and release system, and the reservoir rainfall, water level, and dam seepage pressure. , seepage, dam seepage lines and other automatic monitoring. It provides timely and accurate information for the safety management and operation of reservoirs, timely warning and discovery of potential safety hazards in dams, providing a basis for relevant departments and leading scientific decisions, and improving the efficiency and quality of reservoir project management.

The monitoring content of the integrated information system of the medium and small reservoirs includes: reservoir water level, water pressure, seepage, flow, conductivity, wind force, relative humidity, temperature of air and water, and surface displacement of the dam. The instruments used in the project include DIT-MCU hydraulics and dam monitoring devices, data loggers, hydraulic pressure gauges, water level gauges, bar gauges, joint gauges, settlement gauges, inclinometers, water quality detectors, and GPS positioning systems. Data transmission processing system, data storage, early warning system, etc.

The small and medium-sized reservoirs comprehensive information system can realize remote automatic monitoring all-weather, collect and record the data of the sensor monitoring points in real time to relevant databases. Therefore, the data change process of the monitoring object can be completely recorded. It adopts a hierarchically distributed open structure and the operation mode is a decentralized control mode. Each local monitoring unit can be instructed to automatically conduct inspections and store data according to the set time and submit data to the monitoring center. The data acquisition system processes the reported data and stores it in the designated primary and standby databases.

Features

Real-time remote monitoring of each dam's test parameters, can be set according to the need to set the acquisition frequency, measuring point data, the original data can be calculated in various ways. The data can be saved in various databases and can be used to query historical data. It can also directly classify Excel and other forms of reports on data classification and statistics. The data can be graphically displayed, including water level flow relationships, water level process lines, rainfall histograms, osmotic pressure, seepage process lines, time history plots, X/Y plots, simulation plots, histograms, and histograms. With data over-limit alarm function, water level exceeding limit water level alarm and water level fluctuation rate over limit alarm, when the scene uploads alarm information immediately, the host will have obvious alarm screen and alarm information. Automatic collection of rainfall, water level and other hydrological information, osmotic pressure, seepage and other dam monitoring information, to achieve automatic monitoring of reservoir dam saturation line. Adopting standardized, open design and standard MODBUS communication protocol, it can access general industrial control configuration software or special security monitoring software, adopt close-range wireless network or GPRS/CDMA communication, and reduce the difficulty of implementing the safety monitoring system. The distributed system structure has a high degree of reliability and economy. The data acquisition units are distributed near the sensor installation site. The reliability and stability of the system are greatly improved, and the amount of signal cables can be significantly reduced. The economic efficiency of the system is greatly improved. The implementation and maintenance of the project are more convenient. Standardized design meets the following specifications and standards: "Specifications for Automatic Hydrological Reporting System" SL61-2003
Hydrological Information Coding Standard SL330-2005
"Basic technical conditions for dam safety automatic monitoring system equipment" SL268-2001
Earthrock Dam Safety Monitoring Technical Specification SL60-94

system structure

The small and medium-sized reservoirs integrated information system adopts a distributed system structure. According to the distance between the monitoring equipment installation location and the monitoring center (such as the reservoir management office), the cable (RS485 bus or Ethernet), short-range wireless communication, and GPRS/CDMA network communication are integrated. A variety of communication networking methods, flexible construction of the system, effectively reduce the overall cost of the system, improve system reliability, is very suitable for the construction of small and medium-sized reservoirs informatization and construction of reservoir monitoring and risk reduction reinforcement supporting information construction.

System functions

Receiving real-time collection information from all sites, conducting reasonable checks on data, analyzing and processing, and establishing a real-time database. The osmotic seepage information of the reservoir dam can be saved according to the set time point (up to 6 time points per day). The water level and rainfall information are stored according to the requirements of the water conservancy industry. The database can be stored in 5 minutes, 15 minutes, 30 minutes, and 1 hour intervals. Internet information release: All information is published via the Internet. Users can access the information anywhere as long as they can access the Internet. The operating status of these sites; Information release based on electronic maps: Real-time data of seepage monitoring points of reservoir dams and real-time water level and rainfall data in the reservoir area; Statistical reports: Seepage pressure, water level, and rainfall of reservoir dams Query statistics, generate daily, monthly, annual report and the corresponding trend curve.

Schematic