基于LISST的水库泥沙现场监测报汛系统

LISST-100X现场激光粒度分析仪可以现场获取大坝上下游水体含沙量、颗粒级配、温度等相关信息,具有较高的时效性,因此被长江三峡水利枢纽工程泥沙监测报汛系统所采用.该系统采集的即时泥沙数据信息能够很快传输到工程调度中心并作为工程调度运行的依据,为工程调度中心能够及时、全面获取水文泥沙信息提供了保障,该系统的建立也为水库泥沙监测报汛提供了方向.在系统建立过程中,对于数据分析、含沙量推算、系统运行模式等关键技术进行了探索和研究,取得了一些有用的成果.

On-site reservoir sediment monitoring system based on LISST

The laser in-situ scattering and transmissometer-100X(LISST-100X) is able to obtain information of the sediment concentration,grain composition,temperature and the like of the up and down dam stream rapidly and precisely,therefore it has been applied to the Three Gorges monitoring system of reservoir sediment.The timely data collected by the system can be uploaded to the reservoir operation center in time and consequently taken as the basis for the running schedule of the project,so as to provide a guarantee for the reservoir operation center to fully and timely receive the hydrology and sediment information.The building-up of this system also provides directions for the set-up of the monitoring system of reservoir sediment.This paper studies some key technologies in the building-up process of the system and does some valuable research of the data analysis,the sediment concentration calculation,and the frame design of the system,which finally help get some useful results.