Red clay/mudstone distribution, properties and loess-mudstone landslides in the Loess Plateau, China
Red clay/mudstone distribution, properties and loess-mudstone landslides in the Loess Plateau, China
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DOI：
10.1007/s12665-022-10489-4
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发表时间：
2022-08-01
影响因子：
2.8
通讯作者：
Wang, Tao
中科院分区：
文献类型：
--
作者：
Liang, Changyu;Zhang, Hui;Wang, Tao
中国黄土高原广泛分布着红粘土/泥岩。作为一种易滑动地层，它与活动断裂共同控制着黄土-泥岩滑坡的形成。本文研究了RC/泥岩和活动断裂，特别是发震断裂的分布，并解释了它们与滑坡成组、成带分布和滑坡规模差异的关系。此外，本文还对地震滑坡的规模和流动性进行了研究。所有关于地层、滑坡、活动断裂和岩土性质的数据都来自出版的文献和地质实地调查。结果表明：(1)新构造活动、RC/泥岩分布和露头的差异影响了滑坡的类型和规模；(2)滑坡主要沿河流和断裂带密集分布，且沿河流具有明显的尺度差异；(3)由发震断裂活动和地震活动引发的滑坡主要集中在六盘山以西的新近系泥岩盆地。丰富的资料为工程地质工作者提供了参考和依据，为青藏高原滑坡灾害的后续调查、灾害区划、预测预报、区域防治和治理奠定了科学基础。
Red clay (RC)/mudstone is widely distributed on the Loess Plateau (LP) in China. As a sliding-prone stratum, it controls the formation of loess-mudstone landslides together with active faults. This paper examines the distribution of RC/mudstone and active faults, especially seismogenic faults, and explains their relationship with the distribution of landslides in groups and belts and the difference in landslide scales. Additionally, the paper investigates the scale and mobility of the seismic landslides. All the data of the strata, landslides, active faults, and geotechnical properties come from published documents and geological field investigations. The results reveal that (1) differences in the neotectonic activity and the distribution and outcrops of RC/mudstone affect the landslide type and scale; (2) the landslides are mainly densely distributed along rivers and fault zones and are characterized by an obvious scale difference along a river; and (3) the landslides triggered by seismogenic fault activity and earthquake activity are mainly concentrated in the Neogene mudstone basin to the west of the Liupan mountain range. The abundant data provide a reference and foundation for the engineering geologist and lay a scientific foundation for subsequent investigation, hazard zonation, prediction and forecasting, regional prevention, and control of landslide disasters on the LP.