Water Drainage and Consolidation for Mud of Moderate Silty Loam

YANG Feng; ZHANG Wu-jun; LIU Chang-tao; ZHU Shou-jun

doi:10.13961/j.cnki.stbctb.2014.03.010

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Water Drainage and Consolidation for Mud of Moderate Silty Loam

- Water Drainage and Consolidation for Mud of Moderate Silty Loam
- Bulletin of Soiland Water Conservation Vol. 33, Issue 3, Pages: 44-49(2014)
- 作者机构：
  
  1. 西北农林科技大学资源环境学院, 陕西杨凌,712100
  2. 陕西省水土保持局,陕西,西安,710004
  3. 延安市志丹县水务局,陕西,延安,717599
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.03.010
  CLC：
- Published：2014
- 稿件说明：
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YANG Feng, ZHANG Wu-jun, LIU Chang-tao, et al. Water Drainage and Consolidation for Mud of Moderate Silty Loam[J]. Bulletin of Soiland Water Conservation, 2014, 33(3): 44-49.
DOI：

YANG Feng, ZHANG Wu-jun, LIU Chang-tao, et al. Water Drainage and Consolidation for Mud of Moderate Silty Loam[J]. Bulletin of Soiland Water Conservation, 2014, 33(3): 44-49. DOI： 10.13961/j.cnki.stbctb.2014.03.010.

摘要

泥浆的排水固结变化对水坠坝筑坝过程中坝体排水系统的合理布设具有重要的指导作用。将中粉质壤土以1:1

1.5:1和2:1的土水比制成泥浆

并将制得泥浆分别填充在高度为50

100

150和200 cm的聚乙烯波纹管中

对其排水量、上析水量、下渗水量和固结沉陷量等指标进行测定。结果表明

同一土水比的泥浆

上述指标随着泥浆填充高度的增加而增大;同一泥浆填充高度

上述指标随着土水比的增大而减小。泥浆的排水量、固结沉陷量主要集中于前24 h

排水量最大可占总排水量的89.48%

固结沉陷量最大可占总固结沉陷量的93.24%。因此

在实际筑坝过程中土水比较小时

应注重坝体泥浆的前期排水

并加强表层排水;土水比较大

充填高度较小时

可考虑不布设坝体泥浆表层排水措施

而要加强下渗水的排水措施。

Abstract

The change of mud drainage and consolidation plays an important role in reasonable arrangement of drainage system in the construction process of hydraulic fill dam. By taking moderate silty loam as the research object

mud was separately packed at three soil-water ratios(1:1

1.5:1 and 2:1) in four polyethylene corrugated pipes of 50

100

150 and 200 cm in height and indexes for quantity of water discharge

up-water separating

penetration and the amount of consolidation-subsidence were measured. Results show that all the indexes increased with increasing mud height at the same soil-water ratio. However

the indexes decreased with increasing soil-water ratio in the same height mud. The amount of discharged water and subsidence were mainly observed in the first 24 h

with the maximum 89.48% and 93.24% in total quantity

respectively. Therefore

in practice

it is necessary to enhance the previous up-water discharge at low soil-water ratio and meanwhile

no arrangement of drainage systems in surface mud is needed except enhancing the drainage measures of penetrating water.

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