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Comprehensive disaster reduction method of debris flow based on dynamic process and energy spectrum analysis

A technology of energy spectrum analysis and debris flow, applied in the direction of instruments, hydraulic models, design optimization/simulation, etc., can solve the problems of prevention and control engineering failure, failure to achieve control effects, small design parameters, etc., and achieve important theoretical significance and application value Effect

Active Publication Date: 2021-06-04
GUANGZHOU INST OF GEOGRAPHY GUANGDONG ACAD OF SCI
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Problems solved by technology

Moreover, at present, the design of key parameters of debris flow prevention and control projects is mainly determined by empirical formulas, lacking physical basis and analysis of motion processes, resulting in some design parameters being too small (resulting in failure of prevention and control projects, such as Longchi Bayi Ditch, Qingping Wenjia Ditch, Beichuan Qinglinwan ditch blocking project, etc.) or too large (causing waste of manpower, material and financial resources), the best control effect cannot be achieved

Method used

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  • Comprehensive disaster reduction method of debris flow based on dynamic process and energy spectrum analysis
  • Comprehensive disaster reduction method of debris flow based on dynamic process and energy spectrum analysis
  • Comprehensive disaster reduction method of debris flow based on dynamic process and energy spectrum analysis

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Embodiment

[0117]Case area selection:

[0118] Select a typical research area of ​​the deep water village in Mangui Town, Gaozhou City, Guangdong Province. It is located in the northeastern mountainous area of ​​Gaozhou City, Guangdong Province. It is adjacent to Yangchun City, Dongchun City. The North and Xinyi City are row, the Heshi Town is bordered, and the West and Guding Town, the south is connected to the Town, in the city of 3 people. Geographic location image 3 .

[0119] Watershed pregnancy analysis:

[0120] The watershed area is 9.52km 2 The lowest elevation of the basin is 357.70m, the maximum elevation 1293.65m, the relative high difference is 835.95m. It is subtropical monsoon area, which is affected by the Nanghai Ocean Climate. The average rainfall is more than 1,700 mm. The average temperature is 21.3 ° C ~ 23.2 ° C, the annual frost-free period is 361d, and the average annual sued period of 1935.3 hours. Special natural geographical conditions, very easy to form heavy rain...

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Abstract

The invention provides a mud-rock flow comprehensive disaster reduction method based on dynamic process and energy spectrum analysis. The method includes: determining the disaster-forming environment of the debris flow basin, establishing a three-dimensional debris flow basin model, and calculating the critical accumulation amount of loose soil forming the debris flow and the critical energy when the debris flow erupts; based on the debris flow dynamics model and equations, simulating and calculating the spatial debris flow characteristics Parameters; analyze the energy in the process of debris flow movement, based on the energy distribution and energy accumulation and attenuation characteristics, carry out debris flow energy spectrum division; A new method for comprehensive disaster reduction of debris flow. The invention can be widely applied to key parameter design of prevention and control engineering, debris flow comprehensive disaster reduction technology system, debris flow risk management, etc., and has important theoretical significance and application value.

Description

Technical field [0001] The present invention belongs to the field of natural disasters, and specifically, the present invention relates to a comprehensive disaster reduction method based on the power process and energy spectrum analysis. Background technique [0002] Debris flow is a common mountain disaster. Its activities and hazards are almost all over the world. With the increasing global warming and human activities, mudslide activities are getting active, seriously threatened in mountainous people, ecological security, and mountainous areas can sustainable Development, etc., the disaster prevention and mitigation is inseparable. [0003] At present, the prevention and treatment of mudslides mainly adopts a comprehensive manner, mainly in the mudslide formation area, the governance and other measures, comprehensive management, control soil, improve the environment; take break, regulation and spending in the mudslide circulation area; Project, making the mudslide smoothly bel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06T17/00E02B1/02G06F119/14
CPCE02B1/02G06T17/00G06F30/20
Inventor 王钧黄光庆宫清华袁少雄陈军尹晓玲黄苍平
Owner GUANGZHOU INST OF GEOGRAPHY GUANGDONG ACAD OF SCI
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