公路黄土坝式路堤蓄水位分析

徐世强; 邹群; 折学森; 封建湖; 时磊

doi:10.19818/j.cnki.1671-1637.2012.06.003

公路黄土坝式路堤蓄水位分析

doi: 10.19818/j.cnki.1671-1637.2012.06.003

徐世强^{1, 3},
邹群²,
折学森³,
封建湖¹,
时磊³

1.
长安大学理学院, 陕西西安 710064
2.
南昌工程学院土木与建筑工程学院, 江西南昌 330029
3.
长安大学公路学院, 陕西西安 710064

基金项目:

国家自然科学基金项目 41172262

陕西省自然科学基金项目 2007E204

中央高校基本科研业务费专项资金项目 CHD2011JC042

详细信息

作者简介:
徐世强(1972-), 男, 陕西澄城人, 长安大学副教授, 工学博士, 从事路基工程研究

中图分类号: U416.12
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- 被引次数: 0
出版历程
- 收稿日期: 2012-08-18
- 刊出日期: 2012-12-25

Pool level analysis of highway loess dam embankment

1.
School of Sciences, Chang'an University, Xi'an 710064, Shaanxi, China
2.
School of Civil Engineering and Architecture, Nanchang Institute of Technology, Nanchang 330029, Jiangxi, China
3.
School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China

More Information

Author Bio:
XU Shi-qiang(1972-), male, associatep rofessor, PhD, +86-29-82335655, qiangshixu@126.com

摘要

摘要: 为分析公路黄土坝式路堤涵洞闲置原因, 针对路堤上游蓄水的U型沟谷几何边界条件建立库区模型, 根据路堤蓄水补充损失特点建立库水补充损失模式, 利用渗流力学、蒸发理论得到蓄水位算式, 通过调研与实测选定路堤模拟参数进行了水位计算, 并与已建的路堤蓄水实际情况进行了对比验证。分析结果表明: 不考虑泥沙影响, 在正常的年降雨入库量条件下, 无放水的公路黄土坝式路堤具有正常蓄水上限水位, 即理想均值水位和上限高水位; 上限水位的存在与蓄水时间没有关系; 上限高水位小于涵洞底部标高是涵洞闲置的本质原因; 实际设计时应注意上限高水位对滞洪库容的影响。
- 路基工程 /
- 坝式路堤 /
- 涵洞 /
- 蓄水位 /
- 上限水位
Abstract: In order to find out the idle reasons of loess dam embankment culvert for highway, the calculation model of reservoir was established according to the geological boundary conditions of U-shaped gully for embankment upriver water storage. In out water modes were set up based on the characteristics of embankment in-out water. Pool level formulae were proposed based on seepage mechanics and evaporation theory. Water level was calculated with simulated embankment parameters from investigation and actual measuring, and was contrasted with the actual situation of embankment water storage. Analysis result shows that highway loess dam embankment is of upper limit water levels without drainage and the influences of mud and sand in normal rainfall, that are ideal average water level and upper limit peak water level. The upper limit water level is not related with storing time. The essence reason for idle culvert is that upper limit peak water level is less than the bottom elevation of culvert, and the effect of upper limit peak water level on balancing storage should be considered in actual design. 4 tabs, 9 figs, 16 refs.
- subgrade engineering /
- dam embankment /
- culvert /
- pool level /
- upper limit water level

HTML全文

图 1 库区模型

Figure 1. Reservoir model

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图 2 库水补充损失模式

Figure 2. In-outwatermodes

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图 3 极端工况一次入库蓄水位

Figure 3. Pool levels of one inflow in extreme mode

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图 4 极端工况均匀入库蓄水位

Figure 4. Pool levels of uniform inflow in extreme mode

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图 5 中间工况两次入库蓄水位

Figure 5. Pool levels of two inflows in mid mode

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图 6 中间工况均匀入库蓄水位

Figure 6. Pool levels of uniform inflow in mid mode

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图 7 不渗漏一次入库蓄水位

Figure 7. Pool levels of one inflow without seepage

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图 8 正常蓄水遇频率洪水后蓄水位

Figure 8. Normal pool levels in frequency flood

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图 9 设计使用水位

Figure 9. Design water levels

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表 1 实测年入库量

Table 1. Actual measured annual reservoir inflows

表 2 坝式路堤参数

Table 2. Parameters of dam embankment

表 3 计算工况及意义

Table 3. Calculation working conditions and meanings

表 4 蓄水位计算结果

Table 4. Calculation results of pool levels

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