Barrier lake stability evaluation method

Abstract

The invention discloses a barrier lake stability evaluation method. According to the invention, evaluation of the stability of the weir body needs to be combined with geological conditions, physical and mechanical indexes and seepage field parameters of weir body substances are reasonably selected, and a simplified graduation method based on an extreme equilibrium theory system can be generally adopted. Acting force between soil strips is considered when calculation is performed by using a simplified graduation spectrum method, so that a stability evaluation conclusion of the weir body can beobtained; a dimensionless accumulation body index method (DBI) is adopted to carry out preliminary evaluation on the stability of the weir body, so that a preliminary basis capable of being referencedis provided in the subsequent judgment process, the operation steps are simplified, and the labor burden of workers is reduced.

Description

technical field [0001] The invention belongs to the technical field of barrier lake treatment, in particular to a barrier lake stability evaluation method. Background technique [0002] Barrier lakes are lakes formed by storing water after volcanic lava flows or landslides and landslides block river valleys or riverbeds due to seismic activity. Lakes formed by volcanic lava flows are also called lava dammed lakes. There are four processes in the formation of a barrier lake, one is the original water system; the other is that the original water system is blocked by blockages. The third is that after river valleys and riverbeds are blocked, flowing water gathers and overflows around. Fourth, when the water is stored to a certain extent, a barrier lake will be formed. Once the barrier lake breaches, it will form a flood peak downstream, and improper handling will cause major disasters. [0003] However, in the evaluation of the common stability, all rely on manual superviso...

AI Technical Summary

Problems solved by technology

[0003] However, in the evaluation of common stability, all rely on manual supervisors to guess, resulting in general evaluation effect and insufficient accuracy.