基于固相沉积法的大型排土场暴雨泥石流流动特性预测研究——以四川某矿山泥石流为例
|
摘要
泥石流作为矿山常见的地质灾害,已经成为危害人类最重要的地质灾害之一,但目前对大型排土场暴雨泥石流的流动特性和灾害预测研究相比崩塌、滑坡及洪水相对较弱。以四川某矿山排土场暴雨形成的泥石流为例,提出了固相沉积分析法,并对矿山排土场暴雨泥石流流动特性进行预测分析,研究了稀性、低黏度泥石流固相沉积规律,对泥石流密度、流速、固相流量、总流量等进行计算,深入探析了泥石流形成后随沟道变缓等因素衰减演变成山洪的过程。研究成果对泥石流的预测和防治有重要的现实指导作用。
The debris flow as a common geological hazard has become one of the most harm geological hazards to human.At present people's understanding degree to the research on debris flow is relatively weaker than the study about collapse,landslide and flood.This paper takes a mine debris flow as an example based on solid sedimentary analysis,predicting the flowing characteristics of rainstorm debris flow of large dump,studying the dilute resistance and solid sedimentary law of the low viscosity debris flow.We have used the solid deposition analysis method to calculate the weight of debris flow,velocity,solid flow and total flow rate.Analysis on the process of the debris flow which evolved into a torrent due to some unfavorable factors attenuation such as channel has gotten slowly.The research results have important and practical guiding effect about prediction and prevention of debris flow.
The debris flow as a common geological hazard has become one of the most harm geological hazards to human.At present people's understanding degree to the research on debris flow is relatively weaker than the study about collapse,landslide and flood.This paper takes a mine debris flow as an example based on solid sedimentary analysis,predicting the flowing characteristics of rainstorm debris flow of large dump,studying the dilute resistance and solid sedimentary law of the low viscosity debris flow.We have used the solid deposition analysis method to calculate the weight of debris flow,velocity,solid flow and total flow rate.Analysis on the process of the debris flow which evolved into a torrent due to some unfavorable factors attenuation such as channel has gotten slowly.The research results have important and practical guiding effect about prediction and prevention of debris flow.
引文
[1]蒋忠信.基于弯道超高计算泥石流流速的探讨[J].岩土工程技术,2007,21(6):288-291.
[2]蒋忠信.白什滑坡坝漫溢溃坝的水文条件预测[J].岩土工程技术,2008,22(4):194-197.
[3]陈中学,汪稔,胡明鉴,等.黏土颗粒含量对蒋家沟泥石流启动影响分析[J].岩土力学,2010,31(7):2197-2201.
[4]胡明鉴,汪稔,陈中学,等.泥石流启动过程PFC数值模拟[J].岩土力学,2010,31(增刊1):394-397.
[5]孟凡奇,李广杰,李明,等.逐步判别分析法在筛选泥石流评价因子中的应用[J].岩土力学,2010.31(9):2925-2929.
[6]贾世涛,崔鹏,陈晓清,等.拦沙坝调节泥石流拦挡与输移性能的试验研究[J].岩石力学与工程学报,2011,30(11):2338-2345.
[7]高冰,周健,张姣.泥石流启动过程中水土作用机制的宏细观分析[J].岩石力学与工程学报,2011,30(12):2567-2573.
[8]徐林荣,韩征,苏志满,等.泥石流流速横向分布特征与防治工程结构优化[J].岩土力学,2012,33(12):3715-3720.
[9]朱兴华,崔鹏,周公旦,等.稀性泥石流冲刷规律的试验研究[J].水利学报,2012,43(增刊2):85-91.
[10]贺拿,陈宁生,朱云华,等.泥石流源区砾石土分形特征及其与渗透系数关系试验研究[J].岩土力学,2014,35(9):2543-2548.
[11]李昌华,孙梅秀.床面上泥沙绕流上举力系数的简介确定[M].南京:南京水利科学研究院,1984.
[12]中国科学院-水利部,成都山地灾害与环境研究所.中国泥石流[M].北京:商务印书馆,2000:114-116;121-126.
[2]蒋忠信.白什滑坡坝漫溢溃坝的水文条件预测[J].岩土工程技术,2008,22(4):194-197.
[3]陈中学,汪稔,胡明鉴,等.黏土颗粒含量对蒋家沟泥石流启动影响分析[J].岩土力学,2010,31(7):2197-2201.
[4]胡明鉴,汪稔,陈中学,等.泥石流启动过程PFC数值模拟[J].岩土力学,2010,31(增刊1):394-397.
[5]孟凡奇,李广杰,李明,等.逐步判别分析法在筛选泥石流评价因子中的应用[J].岩土力学,2010.31(9):2925-2929.
[6]贾世涛,崔鹏,陈晓清,等.拦沙坝调节泥石流拦挡与输移性能的试验研究[J].岩石力学与工程学报,2011,30(11):2338-2345.
[7]高冰,周健,张姣.泥石流启动过程中水土作用机制的宏细观分析[J].岩石力学与工程学报,2011,30(12):2567-2573.
[8]徐林荣,韩征,苏志满,等.泥石流流速横向分布特征与防治工程结构优化[J].岩土力学,2012,33(12):3715-3720.
[9]朱兴华,崔鹏,周公旦,等.稀性泥石流冲刷规律的试验研究[J].水利学报,2012,43(增刊2):85-91.
[10]贺拿,陈宁生,朱云华,等.泥石流源区砾石土分形特征及其与渗透系数关系试验研究[J].岩土力学,2014,35(9):2543-2548.
[11]李昌华,孙梅秀.床面上泥沙绕流上举力系数的简介确定[M].南京:南京水利科学研究院,1984.
[12]中国科学院-水利部,成都山地灾害与环境研究所.中国泥石流[M].北京:商务印书馆,2000:114-116;121-126.
目录