537 Result(s)
within
**ao** Xu
Earth Sciences
Environmental Science and Engineering
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Article
Study on the relationship between matric suction, unconfined compressive strength, and uniaxial tensile strength for compacted expansive soils
The uniaxial tensile strength (UTS) of soils is conventionally considered as a fraction of suction stress and suction stress is believed to be the product of matric suction and the kth power of effective saturati...
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Article
Hg distribution and risk assessment in soil–Bozhou peony system
Bozhou peony is an important herb in China known for its medicinal properties. This research specifically focuses on the Qiaocheng District in Bozhou City. The study investigates the local soil and Bozhou peon...
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Article
Elemental interactions between pore water and lake sediments with their environmental significance: a case as Holocene sediments in Guozha Co, northwestern Tibetan Plateau
Elements in lake sediments and lake water were commonly used in the reconstruction for the paleoenvironment and paleoclimate, and also enriched into mineral deposit, such as lithium deposit. However, previous ...
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Article
Fractal characteristics of mining-induced overburden fracture development during fully mechanized coal mining
In the process of coal mining, the residual goaf will destroy the stress balance state of the overlying strata, which will result in a large number of fractures. The development of overburden fractures not onl...
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Article
A solution of sea sand as a sustainable fine aggregate: control harmful chloride ion by electric field force
High chloride ion concentration is the main obstacle to use sea sand as the fine aggregate for reinforced concrete structures. The chloride ion on the surface of sea sand mainly exists in the form of sodium ch...
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Article
Monthly runoff prediction using gated recurrent unit neural network based on variational modal decomposition and optimized by whale optimization algorithm
To further increase the forecast precision of non-stationary non-linear monthly runoff series and improve the effectiveness of pretreatment of monthly runoff series, the whale optimization algorithm (WOA) is i...
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Viscoelastic–plastic stability analysis of large-section quasi-rectangular pipe-jacking tunnel under-passing box culvert
With the widespread application of large-section quasi-rectangular pipe-jacking tunnels in urban road traffic engineering in China, higher requirements have been put forward to control the influence of their c...
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Mechanical behaviour and microstructure of granite residual bio-cemented soil by microbially induced calcite precipitation with different cementation–solution concentrations
Microbially induced calcite precipitation (MICP) stands as an environmentally friendly and promising technique for enhancing the performance of soil. Bacteria catalyze the hydrolysis of urea, prompting calcium...
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Article
Quantitative source identification and determination of natural background levels for typical ions in groundwater of the Huaibei Plain, China
Groundwater is the major water resource for human consumption, industrial operation, and agricultural irrigation in the Huaibei Plain, Anhui Province, China. To effectively manage groundwater resources, it is ...
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Article
Improving Hierarchical Ecosystem Structures and Multicriteria Evaluation for Current Land Ecosystem Classification
For the purposes of environmental management and planning, Land Ecosystem Classification (LEC) provides a systematic framework for organizing landscape resources. LEC attempts to capture Earth processes over l...
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Article
Mechanism and surrounding rock control of gob-side entry formation passing through normal fault: a case study
Geological faults are widely distributed in stratum and have an important influence on underground mining. To increase the mining rate of coal resources and reduce the occurrence of accidents such as rock burs...
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Article
Hydrogeochemical evidence for the geothermal origin of sedimentary hot dry rock in Gonghe Basin, Northwest China
Geothermal energy resources are abundant in the Qinghai Gonghe Basin. Helium isotope evidence indicates that the heat source of the high-temperature geothermal system of the basin is the crustal overlying melt...
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Article
The swelling behaviour of natural expansive stiff clay under different constraint conditions during cyclic wetting and drying
In this study, the intact Nanning stiff clay were subjected to cyclic wetting–drying under different axial constrain conditions. Experimental results showed that specimen presented vertical stress-dependent ax...
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Article
Sediment deficit and morphological changes of alluvial floodplain in wandering reach of the lower Yellow River after **aolangdi Reservoir operation
Alluvial floodplains are a prominent part of rivers and play a vital role in flood mitigation and sediment detention. In the sediment-laden lower Yellow River (LYR), the floodplains have lost the sediment supp...
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Article
Open AccessThe spatial distribution and source apportionment of heavy metals in soil of Shizuishan, China
Environmental pollution of heavy metals in the typical coal industrial city should be paid more attentions nowadays. The spatial distribution and source apportionment of 8 heavy metals (i.e., Cd, Cr, Co, Zn, N...
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Article
Hydrochemical assessments and driving forces of water resources in coal mining areas: a case study of the Changhe River Basin, Shanxi
Explore the hydrochemical characteristics of surface water (SW) and groundwater (GW) under coal mining activities and controlling factors is essential to ensure water security. This research concentrates on th...
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Article
Comparison of approaches to spatiotemporally interpolate land surface air temperature for the Qinghai–Tibet Plateau
The Qinghai–Tibet Plateau has complex geomorphic features, which makes it difficult to interpolate surface air temperature precisely because of sparse samples and intensive spatial variations. Different interp...
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Article
Identifying structure change of vegetation under long-term disturbance in the Shendong mining area
Understanding how the variations in vegetation in vulnerable ecosystems such as mining areas are affected by human-induced landscapes is essential to environmental and resource management for achieving sustain...
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Article
Synergistic effect of rainfall and pipe leakage erosion on the formation and development of loess caves in Weinan city, Loess Plateau, Northwest China
Rapid urban expansion and climate change often bring about loess cave disasters on the Chinese Loess Plateau. It is believed that human activity and rainfall can synergistically alter the hydrogeological condi...
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Article
Enhancement mechanism of remolding on the swelling behavior of expansive stiff clay: from microstructure perspective
Stiff clays in intact and compacted states often exhibit distinct swelling properties, which are highly dependent on the microstructural characteristics of the soil. In this study, one-dimensional swelling tes...
