CAJ | 학술논문

地震或强降雨诱发滑坡，滑坡体碰撞解体形成碎屑物质堆积在沟道内，在后期降雨作用下形成泥石流，这是泥石流形成的一种方式，可称为滑坡碎屑堆积体泥石流。笔者分析了影响碎屑堆积体泥石流起动的特征参数，通过实验研究了碎屑堆积体泥石流形成的过程，分析了堆积体表面坡度、黏粒质量分数、中值粒径(d 50)以及不均匀系数(Cu)对泥石流形成的影响。结果表明：碎屑堆积体表面坡度对形成泥石流所需单宽流量无明显影响；黏粒质量分数在不大于5%时仅影响碎屑堆积体侵蚀，对碎屑堆积体揭底所需单宽流量无明显影响；影响碎屑堆积体形成泥石流所需单宽流量的因素主要为中值粒径和不均匀系数随堆积体中值粒径、不均匀系数的增大而增大。通过实验数据拟合得出了中值粒径和不均匀系数与泥石流形成和揭底所需单宽流量的公式；由于公式中只考虑了影响碎屑堆积体形成泥石流的两个主要因素(d 50和 Cu)，因此对比水文计算结果偏小，但整体趋势基本一致。在实际应用到这类泥石流沟时，可通过修正进行预测。
지진혹강강우유발활파，활파체팽당해체형성쇄설물질퇴적재구도내，재후기강우작용하형성니석류，저시니석류형성적일충방식，가칭위활파쇄설퇴적체니석류。필자분석료영향쇄설퇴적체니석류기동적특정삼수，통과실험연구료쇄설퇴적체니석류형성적과정，분석료퇴적체표면파도、점립질량분수、중치립경(d 50)이급불균균계수(Cu)대니석류형성적영향。결과표명：쇄설퇴적체표면파도대형성니석류소수단관류량무명현영향；점립질량분수재불대우5%시부영향쇄설퇴적체침식，대쇄설퇴적체게저소수단관류량무명현영향；영향쇄설퇴적체형성니석류소수단관류량적인소주요위중치립경화불균균계수수퇴적체중치립경、불균균계수적증대이증대。통과실험수거의합득출료중치립경화불균균계수여니석류형성화게저소수단관류량적공식；유우공식중지고필료영향쇄설퇴적체형성니석류적량개주요인소(d 50화 Cu)，인차대비수문계산결과편소，단정체추세기본일치。재실제응용도저류니석류구시，가통과수정진행예측。
Earthquake or strong rainfall can induce landslides.The landslide collapses to form clastic flow accumulation in the channels,forms debris flow under the action of the later rainfall.This is a type of debris flow which is called the landslide clastic accumulation of debris flow.The authors analyse characteristic parameters of the influence on starting of clastic accumulation of debris flow,research the information process of the landslide clastic accumulation of debris flow on the basis of experiments,and then analyse the influence of clastic accumulation surface slope,soil clay content,median grain size and non-uniformity coefficient on the formation of debris flow.The results show that the surface slope of clastic deposition have no significant effect on forming debris flow with discharge per unit width.The clay content are only affect clastic erosion at not more than 5%.It has no significant effect on digging up discharge per unit width.The main influence factors of required discharge per unit width are median diameter and non-uniformity coefficient width are increased with the increase of median diameter and non-uniformity coefficient.By fitting the experimental data,the formula of unit width discharge is obtained,which reflects the influence of median particle size and non-uniformity coefficient.For the formula only two main factors are considered width influence the formation of debris flow (d 50 and Cu). Therefore,the calculation results is smaller than hydrological calculation,but the overall trend is consistent.The formula can be applied in predicting this kind of debris flow after modificatin.