| 北京山区泥石流灾害临界雨量研究 |
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| 引用本文： | 白利平.北京山区泥石流灾害临界雨量研究[J].地质灾害与环境保护,2006,17(4):101-104. |
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| 作者姓名： | 白利平 |
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| 作者单位： | 北京市地质研究所,北京,100011 |
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| 摘 要： | 目前北京山区泥石流灾害的临界雨量研究方法主要是基于统计资料的临界雨量阈值判别法,该方法没有包含泥石流形成地区的地质背景条件与形成机理的信息,因此在推广上存在难度。本文从松散物质失稳引发泥石流的机理出发,推导了松散物质失稳时的雨量计算公式,该公式可用于计算不同流域内泥石流沟道的松散物质起动的临界雨量。将该公式与常规的临界雨量阈值判别公式相结合,能够提高北京地区泥石流灾害预报预警的准确度。
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| 关 键 词： | 泥石流 临界雨量 松散物质 |
| 文章编号： | 1006-4362（2006）04-0101-04 |
| 收稿时间： | 2006-04-02 |
| 修稿时间： | 2006-04-022006-08-03 |
THE RESEARCH ON CRITICAL RAINFALL FOR DEBRIS FLOW IN THE MOUNTAINOUS AREA OF BEIJING |
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| BAI Li-ping.THE RESEARCH ON CRITICAL RAINFALL FOR DEBRIS FLOW IN THE MOUNTAINOUS AREA OF BEIJING[J].Journal of Geological Hazards and Environment Preservation,2006,17(4):101-104. |
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| Authors: | BAI Li-ping |
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| Institution: | Beijing Institute of Geology, Beijing 100011, China |
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| Abstract: | The mostly used method of critical rainfall in debris flow is the discriminance of critical rainfall,which is based on the statistical data.This method cannot be used in other area,because it doesn't contain the geological background and mechanism information of debris flow.This paper analyzed the start-up mechanism of the incompact substance,and gave out the formula that could be used in computing the critical rainfall value of debris flow in its eruption.The veracity of forecasting the debris flow could be improved through this formula and the general method of computing the critical rainfall. |
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| Keywords: | debris flow critical rainfall incompact substance |
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