粘性泥石流沟口回淤实验研究
文献类型：期刊论文
| 作者 | 柳金峰 ; 游勇
|
| 刊名 | 山地学报
 |
| 出版日期 | 2011-03 |
| 卷号 | 29期号:2页码:226-233 |
| 关键词 | 粘性泥石流 沟口回淤 实验研究 回淤长度 相对回淤坡度 |
| 其他题名 | Experimental Study on Back Siltation in the Outlet of Viscous Debris Flow Channel |
| 通讯作者 | 柳金峰 |
| 中文摘要 | 泥石流在堆积区进行堆积时,常在沟口形成回淤并造成灾害。为了探讨泥石流在沟口回淤的发展过程、影响因素及其预测,开展了4组107次泥石流连续堆积和4组共21次单次堆积实验。实验结果表明,粘性泥石流在沟口回淤的发展过程中,累积回淤长度与泥石流累积总量呈线性正相关,相对累积回淤坡度与泥石流累积总量呈对数负相关,根据相对累积回淤坡度的变化将粘性泥石流沟口回淤的发展过程分为三个阶段;在泥石流总量相同的情况下,回淤长度随泥石流重度增大而呈线性增大,随堆积区坡度增大而呈线性减小,随流通区坡度增大而成对数减小。相对回淤坡度随泥石流重度的增大呈线性减小,随堆积区坡度增大而呈线性增大,随流通区坡度增大而呈线性增大;在泥石流总量不同的情况下,随泥石流总量的增大,其沟口回淤长度随之呈线性增大,而相对回淤坡度随之呈线性减小;在粘性泥石流沟口回淤发展过程及其影响因素分析的基础上,采用多元线性回归的方法,建立了粘性泥石流在连续堆积及单次堆积情况下沟口回淤的经验预测公式。 |
| 英文摘要 | Back siltation is usually formed in the out let of v iscous debris flow channel and causes dBack siltation is usually formed in the out let of v iscous debris flow channel and causes damages. To d is cuss the deve lopm ent process, the influence factors and pred iction o f the back siltation in viscous debr is flow gul lies, 107 cont inuous experiments in four groups and 21 sing le experiments in four groups are carried out in different debris flow volumes, densities, slopes of deposition area and channel cond it ions. The resu lts ind icate that the accu mu lative back siltat ion leng th has a linear positive re lation w ith the debris flow vo lume, and the re lative accumu la tive back silation slope has a logarithm ic negative relat ion w ith the debris flow vo lum e. Based on the change o f the relat ive accumu lative back siltat ion slope, the development of the back siltat ion in v iscous debris flow gu llies are d i v ided into three stages. Under the same debris flow volume cond ition, the back siltat ion length increases linearly w ith the increase of debris flow density, decreases linearlyw ith the increase o f slope of deposit ion area and decrea ses logar ithm ica lly w ith the increase o f channel slope; the re lative back silat ion slope decreases linearly w ith the in crease o f debris flow density, increases linearly w ith the increase o f slope o f deposit ion area and increases linearly w ith the increase of channel slope. U nder d ifferent debris flow vo lume cond ition, the back siltat ion length increases linearly and the re lative back siltation slope decreases linearly w ith the increase of debris f low vo lume. Based on the ana lysis o f back siltat ion deve lopment process and the influent ial facto rs, applied the mu lt iple linear regression method, the empirica l formulas in continuous and sing le deposition cond itions are estab lished to predict the back siltation in v iscous debris flow gullies.amages. To d is cuss the deve lopm ent process, the influence factors and pred iction o f the back siltation in viscous debr is flow gul lies, 107 cont inuous experiments in four groups and 21 sing le experiments in four groups are carried out in different debris flow volumes, densities, slopes of deposition area and channel cond it ions. The resu lts ind icate that the accu mu lative back siltat ion leng th has a linear positive re lation w ith the debris flow vo lume, and the re lative accumu la tive back silation slope has a logarithm ic negative relat ion w ith the debris flow vo lum e. Based on the change o f the relat ive accumu lative back siltat ion slope, the development of the back siltat ion in v iscous debris flow gu llies are d i v ided into three stages. Under the same debris flow volume cond ition, the back siltat ion length increases linearly w ith the increase of debris flow density, decreases linearlyw ith the increase o f slope of deposit ion area and decrea ses logar ithm ica lly w ith the increase o f channel slope; the re lative back silat ion slope decreases linearly w ith the in crease o f debris flow density, increases linearly w ith the increase o f slope o f deposit ion area and increases linearly w ith the increase of channel slope. U nder d ifferent debris flow vo lume cond ition, the back siltat ion length increases linearly and the re lative back siltation slope decreases linearly w ith the increase of debris f low vo lume. Based on the ana lysis o f back siltat ion deve lopment process and the influent ial facto rs, applied the mu lt iple linear regression method, the empirica l formulas in continuous and sing le deposition cond itions are estab lished to predict the back siltation in v iscous debris flow gullies. |
| 分类号 | P642.23 |
| 资助信息 | 国家自然科学基金项目(编号:40971014和40901008) |
| 语种 | 中文 |
| 公开日期 | 2013-01-07 |
| 源URL | [http://192.168.143.20:8080/handle/131551/4756]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 推荐引用方式 GB/T 7714 | 柳金峰,游勇. 粘性泥石流沟口回淤实验研究[J]. 山地学报,2011,29(2):226-233. |
| APA | 柳金峰,&游勇.(2011).粘性泥石流沟口回淤实验研究.山地学报,29(2),226-233. |
| MLA | 柳金峰,et al."粘性泥石流沟口回淤实验研究".山地学报 29.2(2011):226-233. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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