DEBRIS-FLOW PROCESSES FEATURES IN THE KARGALINKA RIVER BASIN 23 JULY 2015

Authors

  • В.S. Stepanov RSE "Kazhydromet"
  • R.К. Yafyazova RSE "Kazhydromet"

Keywords:

debris flow, water flow, sediment, loess, solid concentration in debris-flow mass, moving and confining forces

Abstract

23 July 2015 debris flow differed from debris flows typical for the Ile Alatau due to the features of the main factors of debris-flow forming and debris-flow path in the Kargalinka River valley radically. The debris-flow discharge does not exceed 100...150 m3/s. The sharp broadening of the valley in the dam site and the low value of debris-flow mass plasticity led to that the velocity of «liquid» part of the debris-flow mass ahead of the velocity of coarse grains. Partial filling a storage reservoir by mud induced the offdesign debris-flow discharge in the tail-water of the dam. It led to secondary formation of a debris flow, which caused great economic damage.

References

Степанов Б.С., Яфязова Р.К. Климат и ландшафты центральной части северного склона Заилийского Алатау / Современные проблемы геоэкологии и созологии. – Алматы, 2001. – С. 138-142.

Published

2023-02-27

How to Cite

Stepanov Б., & Yafyazova Р. (2023). DEBRIS-FLOW PROCESSES FEATURES IN THE KARGALINKA RIVER BASIN 23 JULY 2015 . Hydrometeorology and Ecology, (2), 79–85. Retrieved from https://journal.kazhydromet.kz/index.php/kazgidro/article/view/420

Issue

Section

HYDROLOGY