Method for monitoring mountain torrent and debris flow disasters in debris flow channel

Abstract

The invention discloses a method for monitoring mountain torrent and debris flow disasters in a debris flow channel. According to the method, the environmental noise data waveform formed when the mountain torrent debris flow travels in a debris flow channel has specific uniqueness in the aspects of noise value and attenuation characteristics; the signal characteristics can be distinguished from other environmental noises; a noise value and time characteristic information in a signal are effectively extracted by adopting filtering analysis, and after multiple attenuation, oscillation and excitation characteristics of an environmental noise signal sample L along a time axis are interpreted, the main motion characteristics of the mountain torrent debris flow and the time of the mountain torrent debris flow reaching a monitoring section are identified. By additionally arranging the monitoring sections, the position and flow velocity of mountain torrent debris flow between the monitoring sections can be further monitored. The method provided by the invention is not influenced by factors such as ambient light conditions and visibility, and can well solve the monitoring problem of suddendisasters at night. Moreover, the monitoring device is low in cost, facilitates the improvement of the monitoring intensity, and provides more disaster movement element data for the field research.

Description

technical field [0001] The invention relates to a monitoring method, in particular to a method for monitoring the movement of mountain torrent and mud-rock flow disasters by using environmental noise signals in mud-rock flow channels. The invention belongs to the technical field of signaling devices and the field of environmental disaster prevention and control in mountainous areas. Background technique [0002] The formation of mountain torrents and debris flow disasters is mainly caused by the change of environmental conditions. The three most important environmental conditions are specific topographical conditions, rich sources of loose soil and rock debris, and heavy rainfall. These three are also the main criteria for judging the occurrence of mountain torrents and debris flows in the study of disaster forecasting in mountainous areas. From the perspective of environmental noise research, external natural activities (such as precipitation, strong wind, earth-rock move...

AI Technical Summary

Problems solved by technology

However, a large number of torrents and debris flows occur at night, and natural factors such as light, heavy rainfall, and fog will seriously affect the imaging quality of image monitoring and preparation, reducing the effectiveness of post-analysis

Moreover, this type of monitoring system is often expensive, and it is not convenient for large-scale construction in mountainous areas.

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