Debris flow solid matter starting critical depth and maximum burst total amount measuring and calculating method and debris flow scale forecasting method

Abstract

The invention discloses a debris flow solid matter starting critical depth and maximum burst total amount measuring and calculating method and a debris flow scale forecasting method. The invention provides the debris flow solid matter starting critical depth measuring and calculating method and an application thereof to overcome the defects that in the prior art, due to the fact that research areadifferences exist, various measuring and calculating precision differences are large, universality of various measuring and calculating schemes is not high, and application is obviously limited. Measuring and calculating is carried out on whether debris flow starting in the material source area belongs to an unsaturated seepage-runoff starting mode or an unsaturated seepage starting mode according to the water source condition and the solid substance condition of the material source area, and then measuring and calculating is carried out on the starting critical depth. The method is a full-quantitative measuring and calculating method based on a kinetic model, and can solve the defects that the prior art is limited by a specific object source area object and the measurement and calculation of accidental extreme debris flow disaster events deviating from a constant value are insufficient in a targeted manner. The invention further provides a debris flow maximum burst total amount measuring and calculating method and the application thereof, and the debris flow activity scale forecasting method.

Description

technical field [0001] The present invention relates to a method for measuring and calculating the scale of mud-rock flow activities, in particular to a method for measuring the critical depth of solid matter that can be entrained when a mud-rock flow starts, a method for measuring and calculating the maximum amount of debris flow, and a method for predicting the scale of mud-rock flow activities based thereon. The invention belongs to the field of geological disaster prevention technology and geological disaster monitoring and early warning technology. Background technique [0002] The formation of debris flow is the result of the accumulation of solid matter in the source area of ​​debris flow with the water under the coupling effect of precipitation and topographical conditions. Under a precipitation condition, how much solid material can be activated under hydraulic conditions is an effective method to measure the scale of debris flow activities. This indicator can usua...

AI Technical Summary

Problems solved by technology

As a result, due to the differences in the study area, the measurement accuracy of various measurements varies greatly, and the universality of various measurement schemes is not high, and the application is obviously limited

And for the empirical model established based on existing samples, if the scale of debris flow exceeds the existing sample size, the estimation will be seriously insufficient

This further leads to the underestimation of the scale of the black swan-style debris disasters deviated from the normal by the existing calculation methods

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