| 北京山区柯太沟泥石流 |
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| 引用本文： | 钟敦伦,谢洪,刘世建,韦方强.北京山区柯太沟泥石流[J].山地学报,2000,18(3):212-216. |
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| 作者姓名： | 钟敦伦 谢洪 刘世建 韦方强 |
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| 作者单位： | 中国科学院-水利部,成都山地灾害与环境研究所,四川,成都,610041 |
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| 基金项目： | 中国科学院重点项目!北京山区泥石流防治对策研究 (项目编号 :KZ952_J1_0 2 7)的部份研究成果 |
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| 摘 要： | 北京山区为泥石流多发区 ,共有泥石流沟 50 0多条 ,其中不乏河谷型泥石流。为了对北京山区河谷型泥石流进行深入研究和合理防治 ,选择一条无论地质历史时期还是近代 ,泥石流活动都十分活跃的柯太沟作为研究对象 ,以期通过对该沟泥石流的危害、形成条件和发展趋势的研究 ,提高对北京山区河谷型泥石流的认识和了解 ,从而提出更为合理的减灾对策和防治措施。
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| 关 键 词： | 泥石流 柯太沟 形成条件 发展趋势 北京山区 |
DEBRIS FLOW IN KETAI GULLY,HUAIROU COUNTY,BEIJING |
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| ZHONG Dun-lun,XIE Hong,LIU Shi-jian,WEI Fang-qiang.DEBRIS FLOW IN KETAI GULLY,HUAIROU COUNTY,BEIJING[J].Journal of Mountain Research,2000,18(3):212-216. |
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| Authors: | ZHONG Dun-lun XIE Hong LIU Shi-jian WEI Fang-qiang |
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| Abstract: | Ketai gully, located in Tanghekou Town, Huairou, Beijing, is one of the first tributaries of Chaobaihe River. Debris flow in the basin were of high activity in geological and modern history. Conglonerations deposited from the upper to down, from the tributaries to main, are of debris flows in the old and recent, especially of the occurences in 1939, 1959 and 1991, which caused a great loss of the local inhabitants. Debris flows in the area profit from the relief distribution responsible for the gravity potential energy that will be energizing the convertion of sediments into debris flows and favoring the confluence of runoff, from the schistosity and gneissic schistosity of the ancient strata and the fissure and fracture, due to the position at the cross of the tectonic system of latitudinal Yinshan and the New Huaxia, and from the sharp alternations of cold and hot, freeze and melt, which bring to the rocks slit, crack and weathering. In addition,the scarcity of precipitation and mitigation of the main gully are profitable for the accumulation of debris which would be occasionally stimulated by heavy rains. Debris flow has three developmental tendencies in this gully. If unreasonable activities of human cease, and a comprehensive control measures work, debris flow will become weak gradually. |
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| Keywords: | debris flow Ketai gully formation condition developing trend |
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