Debris flow material source dynamic reserve calculation method under rainfall condition

A reserve calculation and debris flow technology, applied in calculation, water conservancy engineering, special data processing applications, etc., can solve the problems such as the lack of calculation standards and methods for dynamic reserves, the interpretation of static and dynamic reserves of debris flow after earthquakes, and the failure of debris flow prevention and control projects. Achieve the effect of avoiding similarity problems and avoiding particle size effects

Inactive Publication Date: 2016-08-17
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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Problems solved by technology

[0003] However, for the calculation and prediction of debris flow sources, the academic community has no experience and norms for the prediction of its destruction and recharge process and dynamic reserves, and there is a lack of sufficient scientific basis. Neither the code nor the Code for Engineering Design of Debris Flow Disaster Prevention (DZ/T0239—2004) explained the static storage and dynamic storage of post-earthquake debris flow. There is no calculation standard and method for the dynamic storage, and the material flow of the debris flow is not specified. The amount of source changes due to the influence of rainf

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  • Debris flow material source dynamic reserve calculation method under rainfall condition
  • Debris flow material source dynamic reserve calculation method under rainfall condition
  • Debris flow material source dynamic reserve calculation method under rainfall condition

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[0033] The preferred embodiments of the present invention will be further described below in conjunction with the accompanying drawings. See the specific process figure 1 .

[0034] The debris flow in the dry ditch of Hongcun Village in Dujiangyan is located in the Baisha River Basin of Dujiangyan City in the episeismic area of ​​the Wenchuan Earthquake. It is a typical debris flow after the earthquake. 2 (to the downstream Baisha River), the main ditch has a total length of 1.972km and an elevation of 1773-920m. The plane shape of the valley is V-U shape; the elevation of the valley bottom is 1640-1150m, and the relative height difference is 490m. The slopes on both sides of the valley are generally 30-40°. Among them, the valley in the upstream formation area is about 1121m long, with an average vertical slope of 530.78‰; the channel in the circulation area is about 219m long, with an average vertical slope of 273.97‰; the valley in the accumulation area is about 632m long...

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Abstract

The present invention relates to a calculation method for a dynamic reserve scale of a debris flow material source, and specifically to a debris flow material source dynamic reserve calculation method under a rainfall condition. The method comprises the steps of: according to plenty of field investigations and a debris flow material source type, establishing a geological model of material source destruction and conversion; and by using an on-site orthotopic artificial rainfall experiment, disclosing correlations about a conversion from slope destruction of a debris flow source region to a debris flow material source scale under different rainfall conditions, so as to establish a calculation model of a debris flow material source under a rainfall excitation condition. According to the method, proposed is the calculation method of carrying out calculation to determine a total dynamic reserve of the debris flow material source and, on this basis, calculating the dynamic reserve of the debris flow material source under the different rainfall excitation conditions, so as to provide solutions to key technical problems on geological exploration and project design such as a debris flow channel dam capacity and an exhaust conduit section.

Description

technical field [0001] The invention relates to a method for calculating the dynamic reserve scale of a debris flow source, under specific rainfall conditions, and belongs to the field of mountain disasters. Background technique [0002] Debris flow is a kind of geological disaster in mountainous areas where the fluid composed of poorly sorted soil, rocks, water and a small amount of gas flows down slopes and valleys. In the engineering prevention and control of debris flow disasters, the source of debris flow in earthquake-stricken areas is estimated It is divided into the total amount of loose matter in debris flow (static storage) and the amount of loose matter that can participate in debris flow activities during a rainfall process (dynamic storage). The source, dynamic and storage volume of debris flow is the basic parameter and direct basis for the storage capacity design of the dam, the section design of the drainage channel and the comprehensive prevention and contro...

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Application Information

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IPC IPC(8): G06F17/50E02B1/00
CPCE02B1/00G06F30/17
Inventor 杨宗佶丁朋朋乔建平黄栋田宏岭王萌
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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