This dataset contains soil water and thermal parameters data from four typical sites along the China Russia crude oil pipeline (MDS8, MDS94, MDS166, MDS283). The relevant parameters are obtained based on indoor standard tests conducted after on-site sampling, which can truly reflect the basic physical properties and thermodynamic characteristics of permafrost soil under the background of pipeline engineering disturbance. The data content includes key indicators such as soil moisture content, density, specific gravity, organic matter content, liquid and plastic limits, thaw settlement coefficient, freezing temperature, and thermal conductivity.
This dataset can provide basic parameter support for the study of soil freeze-thaw process, water heat force coupling response, and thaw settlement deformation under the action of buried pipelines in permafrost regions for many years. It can also serve as important input data for numerical simulation, permafrost stability evaluation, and secondary freeze-thaw disaster risk analysis. It has important application value for the safety assessment and prevention measures optimization of permafrost engineering.
The data elements are as follows:
Moisture content (W):%, reflecting the moisture content in the soil.
Density (ρ): g/cm ³, representing the mass per unit volume of soil, reflecting the compactness and bearing capacity of the soil.
Specific gravity (Gs): dimensionless, the ratio of the mass of soil particles to the mass of accumulated water, reflecting the physical properties of soil particles.
Organic matter content (Wu):%, reflecting the proportion of organic components in the soil, affecting the structural stability, water retention, and thermal physical properties of the soil.
Liquid limit (WL):%, the water content limit of soil in a flowing state, characterizing the plasticity and range of soil plasticity.
Plastic limit (WP):%, the water content limit at which soil transitions from a plastic state to a semi-solid state, reflecting the lower limit of soil plasticity.
Thawing coefficient (A ₀):%, a quantitative indicator of the settlement capacity of soil during freezing and thawing processes, to evaluate the impact of freezing and thawing on foundation settlement.
Compression coefficient: MPa ⁻¹, representing the compressibility of soil within a certain stress range, reflecting the potential for foundation settlement.
Freezing temperature (Tf): ℃, the temperature at which the soil water mixture begins to freeze, affecting the mechanical properties and thermal conductivity of frozen soil.
Thermal conductivity (λ): W/(m · K), the ability of soil to conduct heat, reflecting the efficiency of thermal energy propagation when soil temperature changes.
Volumetric heat capacity (Cv): 10 ⁶ J/(m ³ · K), the ability of a unit volume of soil to absorb or release heat, reflecting the thermal stability of the soil.
The dataset is based on collected soil samples, and the laboratory conducted single measurements for each indicator. Simultaneously measure three samples for each parameter and take their mean to reflect the typical hydraulic and thermal characteristics of the soil.
Based on soil samples collected along the China Russia crude oil pipeline, raw hydrothermal data were generated through laboratory testing and analysis. Each indicator is measured simultaneously for three samples, and the mean is taken to form the final dataset.
The laboratory measures the water content, density, specific gravity, organic matter content, liquid limit, plastic limit, thaw settlement coefficient, compression coefficient, freezing temperature, thermal conductivity, volumetric heat capacity and other hydrothermal indicators for each sample. The testing follows the "Code for Soil Testing" (GB/T 50123-2019) and relevant national standards and specifications, and standard laboratory instruments are used for measurement. Simultaneously measure three samples for each indicator and take their mean to form the final dataset, in order to reduce experimental errors and ensure data reliability.
This dataset is based on indoor geotechnical tests conducted on soil samples from typical sites along the China Russia crude oil pipeline. The original observation data was processed through sorting, parameter calculation, unit unification, and quality control. The experimental and calculation methods strictly follow the GB/T 50123-2019 "Soil Test Method Standard".
The data accuracy is consistent with the indoor test measurement accuracy, and the data generation and processing process is complete, standardized, and traceable. Quality control measures such as integrity and rationality checks are taken to ensure data quality.
The data is applicable for the analysis of freeze-thaw process, simulation of water heat force coupling, and risk assessment of freeze-thaw disasters under the conditions of buried warm oil pipeline engineering in permafrost regions.
| # | number | name | type |
| 1 | 2022FY100700 | Survey of Permafrost Conditions and Freeze-Thaw Damage in the High-Latitude Regions of Northeast China | Basic Resource Survey Project |
This work is licensed under
CC BY 4.0 (Creative Commons Attribution 4.0 International License).
CSTR:11738.11.NCDC.NIEER.DB7287.2026
10.12072/ncdc.nieer.db7287.2026
