摘要
本文讨论了西安白鹿塬黄土滑坡形成时代、分布规律以及滑坡形成的地质环境。着重分析了人类生产活动(如在内部结构破碎的滑坡体上大量毁林耕地改变了地下水文地质条件及斜坡力学平衡条件等)对塬边黄土滑坡稳定性的影响。通过研究认为:采取工程措施和生物措施是改善塬边地质环境和恢复滑坡稳定的关键措施。
The Bailu tableland is located on the southern margin of the Loess Plateau. It is made up of Tertiary sediments and Quaternary loess deposits. Landslides often occur along the slopes of the tableland and valleys, causing serious disasters. In this region, landslides are mainly rejuvenated old landslides and new ones produced on them. Because of their wide distribution and repeated occurrence, landslides cause serious economic losses. Landslides are not only produced by natural factors, such as structure,geomorphology,lithology and climate, but also by human activities. According to field investigations, human engineering-economic activities are a dominant factor in causing landslides in the Bailu tableland. Among these human activities, damage of vegetation and cultivation accelerate the rejuvenation of old landslides and formation of new landslides. Therefore, the restoration of vegetation is a key measure to control the environment on the slopes of the Bailu tableland.
出处
《地质论评》
CAS
CSCD
北大核心
1991年第3期258-264,共7页
Geological Review
基金
国家自然科学基金--黄土高原西部(六盘山以西)第四纪地层及古环境变化的研究
编号:4870142
