Study on Sedimentation Regulation of Silted Soil in the Front of Reservoir Dam Based on GPR

WANG Yun; WANG Hongyu; CHANG Liucheng; ZHANG Zhilong; BAI Xiaofei

doi:10.13870/j.cnki.stbcxb.2021.04.021

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Study on Sedimentation Regulation of Silted Soil in the Front of Reservoir Dam Based on GPR

更新时间：2025-03-12

- Study on Sedimentation Regulation of Silted Soil in the Front of Reservoir Dam Based on GPR
- Vol. 35, Issue 4, Pages: 152-158(2021)
- 作者机构：
  
  1. 宁夏大学土木与水利工程学院,银川,750021
  2. 宁夏水利水电工程局有限公司,银川,750004
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2021.04.021
  CLC： TV93
- Published：2021
- 稿件说明：
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WANG Yun, WANG Hongyu, CHANG Liucheng, et al. Study on Sedimentation Regulation of Silted Soil in the Front of Reservoir Dam Based on GPR[J]. 2021, 35(4): 152-158.
DOI：

WANG Yun, WANG Hongyu, CHANG Liucheng, et al. Study on Sedimentation Regulation of Silted Soil in the Front of Reservoir Dam Based on GPR[J]. 2021, 35(4): 152-158. DOI： 10.13870/j.cnki.stbcxb.2021.04.021.

摘要

宁夏南部黄土丘陵山区水库除险加固工程中普遍采用"坝前淤积面加坝"工法进行施工，而淤积层的分布规律对评价坝基稳定性至关重要。为勘察淤积土剖面分层情况和空间分布特征，利用探地雷达（GPR）对固原市西吉县大沙河水库坝前淤积土进行探测试验。在选定的坝前淤积土探测区域内，布设了10条测线，首先确定了雷达探测最佳图像效果的叠加次数，然后在所有测线上每隔0.5 m （共计794个测点）进行了探测。同时开挖深度为1.5 m的探槽观察淤积层剖面状况，并在不同深度剖面上取土样进行室内基本物理性质试验。结果表明：雷达探测的最佳叠加次数为512次；雷达波谱图显示在深度为0~2.5 m范围内，坝前淤积土有6层明显的沉积层理；在深度为4~9 m范围内，有清晰连续的河道河床轮廓，各测线上淤泥的沉积厚度范围为3.7~8.2 m；在探槽深度约50 cm处可以观察到明显的砂质粉土—黏质粉土的层理，与探地雷达在该位置的图像解析一致。探测试验为坝前淤积层沉降计算及工程处理措施提供了基础数据。

Abstract

In the reservoirs eliminating danger and reinforcement engineering in severe soil erosion area of the Loess Plateau in southern Ningxia of China

the construction technique of "raising earth dam from upstream deposited mud" is generally adopted. And the distribution rule of deposit layers is very important to evaluate the stability of the dam foundation. In order to investigate the profile stratification and spatial distribution characteristics of the upstream silted soil

the ground penetrating radar (GPR) was used to detect the silted soil in front of Dashahe reservoir in Xiji County

Guyuan City. In the selected detection area of the silted soil in front of the dam

10 survey lines were laid. First

the number of superimpositions for the best image effect of radar detection was determined

and then detection was carried out at 0.5 m intervals (a total of 794 detection points) on all test lines. At the same time

a 1.5 m deep trench was excavated to observe the profile of the silting layer. And soil samples were taken from different depth profiles for laboratory experiments of basic physical-mechanical properties. The results showed that the optimal number of superpositions of radar detection was 512. Radar spectrum showed that there were six obvious sedimentary bedding layers in the range of 0 to 2.5 m. In the depth range of 4 m to 9 m

there was a clear and continuous outline of the river-bed profile

and the sedimentary thickness of the silt on each survey line ranged from 3.7 m to 8.2 m. Obvious sandy silt-clay silt bedding could be observed at the depth of about 50 cm in the trench

which was consistent with the image analysis of GPR at this position. These findings could provide a basis for the settlement calculation and engineering treatment measures of the silting layer in front of the earth-filled dam.

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references

汪亚峰,傅伯杰,陈利顶,等.黄土高原小流域淤地坝泥沙粒度的剖面分布[J].应用生态学报,2009,20(10):2461-2467.

蒋凯鑫,于坤霞,李鹏,等.砒砂岩区典型淤地坝沉积泥沙特征及来源分析[J].水土保持学报,2020,34(1):47-53.

岳大鹏,袁晓宁,李奎,等.陕北子洲黄土洼坝淤地淤积剖面元素分布特征分析[J].干旱区地理,2014,37(5):875-882.

刘鹏,岳大鹏,李奎.陕北黄土洼淤地坝粗颗粒沉积与暴雨关系探究[J].水土保持学报,2014,28(1):79-83.

杨吉山,张晓华,宋天华,等.宁夏清水河流域淤地坝拦沙量分析[J].干旱区资源与环境,2020,34(4):122-127.

邓涛,李志忠,靳建辉,等.探地雷达在福建漳浦海岸抛物线沙丘沉积构造探测中的应用[J].中国沙漠,2015,35(4):882-889.

Bennett M R, Cassidy N J, Pile J. Internal structure of a barrier beach as revealed by ground penetrating radar (GPR):Chesil beach, UK[J].Geomorphology,2009,104(3/4):218-229.

白旸,王乃昂,何瑞霞,等.巴丹吉林沙漠湖相沉积的探地雷达图像及光释光年代学证据[J].中国沙漠,2011,31(4):842-847.

Zhang J, Lin H, Doolittle J. Soil layering and preferential flow impacts on seasonal changes of GPR signals in two contrasting soils[J].Geoderma,2014,213:560-569.

周广行,朱清科,任正龑,等.基于GPR的陕北黄土区河北杨粗根分布特征研究[J].水土保持学报,2016,30(2):346-351.

Al-Qadi I L, Lahouar S. Measuring layer thicknesses with GPR-Theory to practice[J].Construction and Building Materials,2005,19(10):763-772.

Xu X, Wang F, Xin K, et al. Soil layer thickness detection in land rearrangement project by using GPR data[C]//International Conference on Ground Penetrating Radar. IEEE, 2012.

Lindhorst S, Betzler C, Hass H C. The sedimentary architecture of a Holocene barrier spit (Sylt, German Bight):Swash-bar accretion and storm erosion[J].Sedimentary Geology,2008,206(1):1-16.

于秀秀,马兴旺,迪力夏提,等.探地雷达在土层厚度调查中的试验研究[J].土壤学报,2011,48(4):874-878.

王升,陈洪松,付智勇,等.基于探地雷达的典型喀斯特坡地土层厚度估测[J].土壤学报,2015,52(5):1024-1030.

Botha G A, Bristow C S, Porat N, et al. Evidence for dune reactivation from GPR profiles on the Maputaland coastal plain, South Africa[J].Geological Society London Special Publications,2003,211(1):29-46.

Dara R, Kettridge N, Rivett M O, et al. Identification of floodplain and riverbed sediment heterogeneity in a meandering UK lowland stream by ground penetrating radar[J].Journal of Applied Geophysics,2019,171:e103863.

Sambuelli L, Bava S. Case study:A GPR survey on a morainic lake in northern Italy for bathymetry, water volume and sediment characterization[J].Journal of Applied Geophysics,2012,81:48-56.

Siston P. Depositional sequences in the central coast of Maricá (Rj) identified through ground penetrating radar (Gpr) investigation[J].Journal of Bacteriology,2010,170(10):4739-4747.

张玮,杨明义,张风宝,等.黄丘区小流域坝地沉积泥沙粒径剖面分布特征[J].水土保持研究,2015,22(2):17-21.

Miller T W, Borchers B, Hendrickx J M H, et al. Effects of soil physical properties on GPR for landmine detection[C]//Fifth International Symposium on Technology and the Mine Problem, 2002:1-10.

王萍,李新举,闵祥宇,等.GPR测量滨海盐渍土剖面分层的实验研究[J].土壤,2016,48(6):1261-1269.

Tosti F, Patriarca C, Slob E, et al. Clay content evaluation in soils through GPR signal processing[J].Journal of Applied Geophysics,2013,97:69-80.

李勉,杨二,李平,等.黄土丘陵区小流域淤地坝泥沙沉积特征[J].农业工程学报,2017,33(3):161-167.

李豪,文安邦,张信宝,等.地质雷达技术及其在侵蚀产沙中的应用初探[J].水土保持研究,2006,13(5):272-275.

蔡少峰.探地雷达在河流水下地形及基岩探测中的试验研究[J].工程地球物理学报,2019,16(5):680-685.

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