1.中国地质科学院地质力学研究所,北京 100081
2.新构造运动与地质灾害重点实验室,北京 100081
3.中国地质大学,北京 100083
万飞鹏(1997—),男,硕士研究生。主要从事地质灾害、工程地质调查等方面的研究。E‑mail:1947384989@qq.com
杨为民(1965—),男,研究员,博士。主要从事地质灾害、工程地质、构造地质等方面的研究。E‑mail:snon_72@163.com
收稿:2021-02-10,
修回:2021-05-09,
纸质出版:2022-08-28
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万飞鹏,杨为民,渠敬凯等.甘肃岷县中寨沟流域内泥石流发育差异的主控因素分析[J].防灾减灾工程学报,2022,42(04):683-694.
WAN Feipeng,YANG Weimin,QU Jingkai,et al.Analysis on Main Controlling Factors of Debris Flow Development Differencein Zhongzhai Gully Basin of Minxian County, Gansu Province[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(04):683-694.
万飞鹏,杨为民,渠敬凯等.甘肃岷县中寨沟流域内泥石流发育差异的主控因素分析[J].防灾减灾工程学报,2022,42(04):683-694. DOI: 10.13409/j.cnki.jdpme.20210210001.
WAN Feipeng,YANG Weimin,QU Jingkai,et al.Analysis on Main Controlling Factors of Debris Flow Development Differencein Zhongzhai Gully Basin of Minxian County, Gansu Province[J].Journal of Disaster Prevention and Mitigation Engineering,2022,42(04):683-694. DOI: 10.13409/j.cnki.jdpme.20210210001.
中寨沟流域位于甘肃省定西市岷县中寨镇,是青藏高原东北部地区具有代表性的极高敏感性泥石流流域之一,该流域内泥石流发育受地形条件及地质条件控制明显。基于野外调查、遥感解译等,结合已有成果资料,系统总结中寨沟流域内泥石流的形成条件,深入剖析中寨沟流域主沟及各支沟泥石流分布发育特征、类型、发育规模、程度等,提出以流域单位面积的泥石流一次最大冲出物质量贡献值为标准来表征泥石流的发育程度,从而探讨流域面积、断裂活动、坡度、地层岩性等因素对泥石流发育的控制作用。研究结果表明:中寨沟流域内泥石流发育规模差异的主控因素为流域面积及断层活动;发育程度差异的主控因素为坡度及地层岩性。
Zhongzhai gully basin is located in Zhongzhai Town, Minxian County, Dingxi City, Gansu Province. It is one of the representative areas which are extremely sensitive to debris flows in the northeast Qinghai-Tibet Plateau. The development of debris flow in this basin is obviously controlled by the topographical and geological conditions. Based on the field investigation, remote sensing interpretation, etc., and combined with the existing data, this paper systematically summarizes the formation conditions of debris flows in Zhongzhai gully basin. The distribution, development characteristics, types, development scale and degree of debris flows in the main and branch gullies of Zhongzhai gully basin are analyzed. The maximum discharge mass contribution value per unit area is put forward to characterize the development degree of debris flow. Then the controlling factors, including basin area, fault activity, slope and stratum lithology, on the development of debris flow are discussed. The results show that: the main factors controlling the development scale difference of debris flow in Zhongzhai gully basin are basin area and fault activity; the main factors controlling the development degree difference are slope and formation lithology.
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