Open AccessStudy on the Geohazard Distribution Laws and Hazard-Causing Mechanism in Menghai County of Yunnan Province
Author(s) -
Ming-chang Hei,
Xue-gang Dai,
Xukai Yuan,
Jia Xiong,
Xiaobo Kang
Publication year - 2021
Publication title -
journal of world architecture/journal of world architecture
Language(s) - English
Resource type - Journals
eISSN - 2208-3499
pISSN - 2208-3480
DOI - 10.26689/jwa.v5i5.2567
Subject(s) - geohazard , geology , landslide , ridge , fault (geology) , geologic hazards , tectonics , hazard , plateau (mathematics) , mining engineering , geomorphology , rockfall , seismology , geochemistry , physical geography , paleontology , geography , mathematical analysis , chemistry , mathematics , organic chemistry
study area is located at the southwest border of Yunnan Province and the southward extended part of Nushan Mountain, with complex and fragile geo-environmental conditions. Deep geological survey and mathematical analytical investigation on the geohazard distribution and hazard-causing mechanisms in this area were carried out in this study. The results revealed that: (1) The development of geohazards was affected differently by different slope shapes, slope structures and elevations; (2) Most of the geohazards were developed in medium shallow cut ridge-like medium-height mountainous geomorphological region and shallow cut steamed bun-like low and medium-height mountainous geomorphological region, and they were relatively concentrated on tectonic zones like fault zones; (3) The slopes formed by loose earth piling up on the surface of Indo-Chinese magmatic rock and Lancang Group metamorphic rock formations were most prone to slope instability and even landslide. The deep study on the geohazard distribution and hazard-causing mechanisms can provide geoscientific basis and reference for the prevention and mitigation work of geohazards under similar geo-environmental conditions.