Jiazhong Qian

Numerical study on solute transport considering variable Péclet number and shear-induced aperture heterogeneity in rough-walled fractures

Haoming Zhang, Jiazhong Qian, Yong Liu, Yingjin Wang et autres

Shear displacement of natural fractures substantially reorganizes aperture structures and flow pathways, resulting in non-Fickian solute transport behaviors, for which the underlying mechanisms and quantitative representation in transport models remain incompletely understood. In this study, five rough-walled fracture configurations were reconstructed from …

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Effects of fracture aperture heterogeneity on heat extraction from enhanced geothermal systems under thermal-hydraulic-chemical coupling

Yaping Deng, Yu Tian, Guofeng Song, Youzheng Qi et autres

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Spatiotemporal Groundwater Dynamics and Relative Risk Assessment in the West Liao River Basin, China (2019–2024)

Fuqiang Yuan, Jiazhong Qian, Qianqian Renyang, Weiwei Li et autres

Groundwater is a critical water source in the semi-arid West Liao River Basin (WLRB). Based on daily observations from 117 monitoring wells distributed across the basin during 2019–2024, this study analyzed interannual and seasonal groundwater-level dynamics and identified areas of relative groundwater …

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Characterization and prediction of non-darcy flow in rough fractures: effects of average aperture and heterogeneity

Jiazhong Qian, Yuan Shang, Yong Liu, Yunhai Fang et autres

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Characterizing water distribution and flow patterns controlled by the Tan-Lu Fault zone in Anhui province

D N Wang, Jiazhong Qian, Guanqun ZHOU, Lei Ma

The Tan-Lu Fault zone in Anhui province, China. This study systematically analyzed the regulatory effect of fault zone on the distribution and runoff characteristics of regional shallow groundwater and river system, and revealed the control mechanism of the fault structure on the …

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Scaling behavior and connectivity-driven transport regimes of preferential flow in three-dimensional rough fractures

Yongshuai Yan, Lei Ma, Jiazhong Qian, Yajing Yan et autres

Preferential flow channelization in three-dimensional (3D) rough fractures is a fundamental fluid mechanics phenomenon governed by complex void geometries that produce non-uniform velocity distributions and severe tortuosity. Classical models relying on averaged aperture approximations or lubrication theory frequently break down in such …

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Predictive modeling of solute transport in sheared rough-walled fractures: effects of aperture heterogeneity and Péclet number

Haoming Zhang, Jiazhong Qian, Yong Liu, Yingjin Wang et autres

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High Pressure Variation of Constant Flow Injection in Multi-Scale Fractures for limestone and Marble rock in Western Sichuan region

Zixiang Chen, Haichun Ma, Chunchao Zhang, Jiazhong Qian et autres

A quantitative framework for karst basin discrimination based on lithology–hydrochemistry coupling

Lu Zhang, Fen Huang, Zhixiong Li, Jing Ning et autres

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Real Contact Area for Mated Rock Joint Using Pressure-Sensitive Film Comparing With the Result of Boundary Element Method Including Plastic Deformation

Haichun Ma, Jiazhong Qian, Daoxiang Wu

Abstract The real area of contact between rock surfaces plays a key role in determining the deformation properties of rock joints. There has been a growing trend toward measuring the real area of contact of rock joints using pressure-sensitive films, which are …

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Geochemical and Isotopic Fingerprint-Based Identification of Sulfate Source Regional Characteristics and Evolution of Groundwater Impacted by Acid Mine Drainage (AMD) from a Nonferrous Metal Mining Area

Lei Ma, Jiazhong Qian, Yunhai Fang, Wei Xie et autres

Identifying hydrochemical processes in groundwater systems is a critical prerequisite for implementing pollution abatement in high-sulfur nonferrous metal mining areas. However, the sulfate sources and evolution mechanisms remain unclear due to complex hydrogeological conditions and intense anthropogenic disturbances. This study combines self-organizing …

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A new perspective on nonlinear flow evolution: The inference of the ideal curve and the establishment of the process hydraulic aperture

Changlin Dai, Haichun Ma, Jiazhong Qian, Qiankun Luo et autres

Nonlinear flow in rock fractures is often described by the Forchheimer equation; however, there are still flaws and contradictions in the understanding of the Forchheimer equation and nonlinear evolution mechanisms, such as differing interpretations of various hydraulic apertures and the factors affecting …

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