| 滇西怒江河谷潞江段泥石流灾害时空发育特征 |
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| 引用本文： | 杨 艳,张绪教,叶培盛,高万里.滇西怒江河谷潞江段泥石流灾害时空发育特征[J].地质通报,2012,31(203):343-350. |
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| 作者姓名： | 杨 艳 张绪教 叶培盛 高万里 |
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| 作者单位： | 1. 中国地质大学地球科学与资源学院，北京100083； 2. 中国地质科学院地质力学研究所，北京 100081 |
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| 摘 要： | 通过对怒江河谷潞江段21条泥石流重点沟道堆积物的沉积特征、形成基本条件的野外调查，结合室内泥石流沟汇水面积、纵比降的数理统计，运用光释光(OSL)测年技术对洪积物的年龄进行测定，揭示了研究区泥石流的发育具有明显的区域性和分期性。结果表明以潞江为界，泥石流从西岸向东岸迁移；东岸泥石流的发育存在南北差异，具有从北向南发展的趋势而且期次明显，两岸泥石流发育分为3期。
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| 关 键 词： | 泥石流 地质灾害 怒江 潞江 光释光（OSL） |
Temporal-spatial development characteristics of the mud-rock flow in Lujiang segment of Nujiang River valley, western Yunnan Province |
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| YANG Yan,ZHANG Xu-jiao,YE Pei-sheng,GAO Wan-li.Temporal-spatial development characteristics of the mud-rock flow in Lujiang segment of Nujiang River valley, western Yunnan Province[J].Geologcal Bulletin OF China,2012,31(203):343-350. |
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| Authors: | YANG Yan ZHANG Xu-jiao YE Pei-sheng GAO Wan-li |
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| Institution: | 1. Faculty of Earth Science and Resources,China University of Geosciences,Beijing 100083,China;
2. Institute of Geomechanics ,Chinese Academy of Geological Sciences,Beijing 100081,China |
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| Abstract: | Based on field investigation of the depositional sedimentary characteristics of mud-rock flow deposits in 21 key trenches and their basic formation conditions in the Lujiang River (a segment of the Nujiang River) , in combination with the indoor mathematical statistics of the mud-rock flow ditch catchment area and the vertical gradient, the authors used OSL to measure the age of the diluvium. The authors hold that the development of the mud-rock flow has obvious regional and periodic characteristics. The results obtained indicate that, with the Lujiang River as the boundary, the mud-rock flow migrated from the west bank to the east bank, the east bank mud-rock flow grew differently in the north and in the south, and tended to develop from north to south with obvious phases, and the growth of the mud-rock flow can be divided into three phases. |
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| Keywords: | debris flow geological disaster Nujiang River Lujiang River optically stimulated luminescence (OSL) |
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