Soft soil engineering geological characteristics and spatial distribution in the north of Yellow River delta

WANG Kuifeng; QIN Xuequan

doi:10.16562/j.cnki.0256-1492.2018091202

Marine Geology & Quaternary Geology > 2020 > 40(1): 31-41. > DOI: 10.16562/j.cnki.0256-1492.2018091202

WANG Kuifeng, QIN Xuequan. Soft soil engineering geological characteristics and spatial distribution in the north of Yellow River delta[J]. Marine Geology & Quaternary Geology, 2020, 40(1): 31-41. DOI: 10.16562/j.cnki.0256-1492.2018091202

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Soft soil engineering geological characteristics and spatial distribution in the north of Yellow River delta

WANG Kuifeng^1,2,3,,
QIN Xuequan⁴

1.
Shandong Institute of Geological Sciences, Shandong Key Laboratory of Geological Process and Resource Utilization in Metallic Minerals, Key Laboratory of Gold Mineralization Process and Resource Utilization Subordinate to the Ministry of Land and Resource, Jinan 250013, China
2.
Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences, Qingdao 266071, China
3.
Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Minerals, Shandong University of Science and Technology, Qingdao 266590, China
4.
Shandong Provincial Lubei Geological Engineering Exploration Institute, Dezhou 253072, China

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Received Date: September 11, 2018
Revised Date: November 19, 2018
Available Online: February 25, 2020

Graphical Abstract

Abstract

Abstract

Soft clay is a kind of bad soil to soil engineers. It is widely distributed in the Yellow River delta and its estuary areas. Bad engineering geological problems often happen in the estuarine areas which lie in the northern part of the Yellow River delta. So far, the engineering properties and the spatial distribution pattern of the soft soil in this area have remained unclear. This time, to meet the needs in socio-economic development, systematic and comprehensive investigation has been carried out based on large amount of borehole data of soft clay from the estuarine areas. Detailed probability distribution models of engineering geologic parameters and their correlations are studied in addition to the origin, thickness, burial conditions, development process and distribution of the soft soil in the study area. Main engineering geological problems and counter measures are proposed. The soft soil of the north Yellow River estuarine area is characterized by high water content, high compressibility, and low shear strength. The variation coefficient of physical properties of the soil is small and dominated by a normal probability distribution pattern. Soft soil layers, which consist of clayed soil, muck and mucky silt saturated or nearly saturated by water, cover almost 85% of the north Yellow River Delta, predominating the coastal and deltaic facies. The methods of pile foundation, desilting and replacement, stack preloading, and electrochemical reinforcement are recommended for ground treatment in the study area. The research results of this paper may provide the basis and reference to engineering construction in the Yellow River delta.
- soft soil engineering properties,
- distribution pattern,
- correlation,
- the north of Yellow River delta,
- mathematical statistics

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References

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Soft soil engineering geological characteristics and spatial distribution in the north of Yellow River delta