Geological disaster early warning system based on meteorological factors?

China is a country with frequent geological disasters, such as collapse, landslide and debris flow, which have a wide ra

Geological disaster early warning system based on meteorological factors?

China is a country with frequent geological disasters, such as collapse, landslide and debris flow, which have a wide range, high frequency and strong destructiveness. The research shows that besides geological structure and human activities, meteorological conditions are also a major cause of geological disasters, and heavy rain or continuous rainfall is often the direct factor that causes geological disasters. Therefore, how to provide reliable geological disaster early warning information through rain monitoring has become an important work content.

1. summary of geological disaster early warning system

At present, with the assistance of meteorological departments, the departments of land and resources in many areas have successively established early warning and forecasting systems for geological disasters. Disaster risk prediction refers to the further analysis of the possible impact of geological disasters and their secondary and derivative disasters on social economy and people's lives on the basis of collecting and centralized monitoring information, and the release of risk prediction in advance to provide countermeasures and guidance for departments, relevant units and the public. Meteorological monitoring, especially the geological disaster early warning and forecasting platform composed of rainfall monitoring system and geological disaster early warning system based on WebGIS, plays a key role in the prediction and prevention of sudden geological disasters [1].

1. 1 early warning system construction goal

The goal of the early warning system is to build a geological disaster early warning system with high timeliness, comprehensive, accurate and reliable information, and provide scientific, timely and effective information guidance for the decision-making of relevant departments and the disaster reduction measures of the people in disaster areas. Make full use of the achievements of modernization, store, process and analyze the information on the basis of a large number of meteorological detection and disastrous weather monitoring information, establish the platform and process of geological disaster early warning service, and provide continuous and seamless geological disaster early warning information according to the requirements of decision-making service [2].

1.2 workflow of early warning system

The geological disaster early warning and forecasting system is mainly composed of monitoring system and early warning system. After starting the modules of meteorological information collection, geological disaster information collection and automatic information release, through real-time monitoring of rain conditions, once the precipitation factor reaches the corresponding monitoring index, the system can analyze the data in the decision-making center to generate the geological disaster early warning level. After determining the information release, according to the early warning level, the system will release early warning information to specific departments and related people by using short messages, radio, television, internet and other media.

2. Composition and implementation of geological disaster early warning system

In the geological disaster early warning system based on WebGIS, the disaster information collection and early warning platform is the core of data information processing and service; The meteorological monitoring system has the functions of rain information and flood warning. The early warning system of group monitoring and prevention includes the functions of early warning release, alarm transmission and information feedback [3]. To realize the normal operation of geological disaster early warning system, we should pay attention to the following aspects:

2. 1 Establish an efficient and stable application platform.

The efficient and stable application platform provides strong support for the normal operation of the whole geological disaster early warning system and plays a vital role in improving the stability of the system. A good application platform depends on perfect data and information, high-tech hardware equipment, mature and advanced software environment and reasonable structural design.

Database is the core part of geological disaster early warning system. In addition to meteorological data such as rainfall data, forecast rainfall data, radar map, satellite cloud picture and typhoon information collected and released in real time, local administrative maps, regional geographic information and massive information of the region are all important components of the database. The software system should be composed of user interface, backstage management system, data exchange platform * * * EAI * *, backstage management application core component group, WebGIS component, Microsoft.NET application server platform and other systems. The advanced, flexible and applicable software architecture meets the requirements of management informatization, and an open and feasible management platform of geological disaster early warning and forecasting system with event triggering, data driving and parameter setting is realized with component design as the core.

2.2 Ensure the security of the system.

The early warning and forecasting system will provide important basis and guidance for disaster prevention and mitigation decision-making, therefore, its safety and authority must be guaranteed, and safety is the key to system design [5-6]. First, network security should be fully considered in the design; Secondly, paying attention to the overall maintenance of the system is an important guarantee to extend the service life of the system. In addition, the communication between the geological disaster early warning and forecasting system and other related systems is realized through a specific interface program. When the geological disaster early warning and forecasting system or related systems fail, the systems will not be able to interact with each other. During the implementation of the system, detailed operation logs should be kept, and once problems occur, the causes of errors can be found out and recovered in time, providing a basis for scientific evaluation of the system.

2.3 scientific and reasonable classification of disasters

The classification of disaster grades is related to the decision to start the early warning report, the release scope and the release target of the early warning report information. This requires special attention in the geological disaster early warning system [4]. According to the geological disaster prediction grade standard formulated by the Ministry of Land and Resources, the prediction grade can be divided into five grades: the first grade is extremely impossible; The second level is less likely; Level 3 * * * attention level * * is more likely; Level 4 * * * Early warning level * * is possible; Five * * * alarm level * * is very possible. Judging from the early warning system, the first and second-level disasters have no actual warning significance, and the early warning work starts from the third level, and the disaster prevention and mitigation work should be carried out around the third to fifth-level geological disasters.

3. Summary

To sum up, the construction and maintenance of geological disaster early warning and forecasting system is a long-term work, involving many departments, a wide range, and many and complicated factors. Therefore, we must constantly sum up experience in our work, establish a smooth information chain with the active cooperation of various departments, provide immediate, authoritative and humanized information guidance for relevant departments and the masses, and minimize the impact of geological disasters.