Determining sources of mine water based on hydraulic characteristics analysis of a fault system

Yao, Mei; Liu, Pei‐Gui; Shang, Manting; Tao, Yuezan; Lei, Chao; Cao, Lugan

doi:10.1007/s12665-016-5660-z

Cited by 10 publications

(3 citation statements)

References 18 publications

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“…To assess the relationships between tectonic and hydrodynamic conditions, tracer methods of reservoir research are commonly used [Huang et al, 2018;Wu et al, 2011;Yao et al, 2016]. The results of tracer tests at the Urna field demonstrate that these relationships are ambiguous (Fig.…”

Section: Comparison Of Tectonic Conditions and Productive Rock Hydrodmentioning

confidence: 99%

Geodynamic and hydrodynamic conditions of the Urna and Ust‐Tegus oil fields

Курчиков¹,

Plavnik²,

Курчиков³

2019

Geodin. tektonofiz.

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This paper discusses the productive beds of the Urna and Ust‐Tegus oil fields (West Siberia, Russian) and permeability and capacity properties that are influenced by geodynamic processes. Strong tectonic processes, accompanied by periodic magma intrusions, produced numerous fractures and faults in the Jurassic sediments, which act as conduits for groundwater flows, and thus led to the hydrothermal alteration of rocks and changes in the pore space. The data presented in the paper testify to the manifestation of these processes in the modern hydrogeochemical and geothermal conditions of the Jurassic‐Cretaceous sediments within the two oil fields and their vicinity. The petrophysical studies of the core samples and the hydrodynamic studies in the wells confirm that the reservoir properties of the productive strata are considerably heterogeneous. Despite the significant effect of the geodynamic factors, the analysis of the tracer data has not revealed any apparent spatial consistency of the presence (or absence) of a hydrodynamic connection between the wells and the locations of fractured and dynamically stressed zones. In our study, we have proposed and tested a method based on the analysis of morphotectonic features detectable in the depth maps of reference surfaces. This method is a useful additional tool for discovering and analyzing the relationships between the tectonic and hydrodynamic conditions of oil and gas fields.

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Section: Comparison Of Tectonic Conditions and Productive Rock Hydrodmentioning

confidence: 99%

Geodynamic and hydrodynamic conditions of the Urna and Ust‐Tegus oil fields

Курчиков¹,

Plavnik²,

Курчиков³

2019

Geodin. tektonofiz.

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“…In recent years, many experts and scholars have carried out a great deal of research work on water source identification and evolution, which is mainly divided into two methods [9][10][11][12][13][14][15]. The first method comprehensively analyzes the water inrush sources by focusing on the main ions and stable isotopes; however, due to the method using only a part of the information of the water sample, it cannot reflect all the characteristics of the water sample, and because it cannot accurately determine the number of water inrush end elements, the method needs to be improved [16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Interpreting Mine Water Sources and Determining Mixing Ratios Based on the Spatial and Chemical Characteristics of Bedrock Brines in a Coastal Mine

Song

Guo

et al. 2023

Water

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Water inrush caused by mining below the seafloor seriously affects the safety and production of mines. Identifying the end element of mine inrush and accurately calculating the mixing ratios of end elements are the basis for a reasonable evaluation of water inrush risk. Based on hydrogeochemical and stable isotope indexes, combined with the spatial distribution characteristics of brine, the classification of brine in the study area was preliminarily determined as follows: shallow brine, middle brine, and deep brine (while previous studies have only classified bedrock brine as one category). Hierarchical multi-index analysis was used to identify the inrush end elements in the different sublevels, and an end-element mixed model was determined according to the analysis results of the four pairs of evaluation indexes (Cl−–δ18 O, Cl−–Ca2+, Cl−–Mg2+, and Cl−–Na+). Through a comparison with the deviation analysis results of previous studies, it was shown that this method is suitable for mine-water-source identification when under complex hydrogeology conditions. According to the calculation results of the mixing ratio, the seawater ratio shows, within the mining process, a trend of first increasing, then decreasing, and finally stabilizing. This trend is controlled by disturbance stress, self-weight stress, and tectonic stress. The vertical zonation of the seawater proportions indicates that seawater mainly recharges mine water through vertical fractures. The difference in the proportion of seawater at the water inrush points of the −600 m sublevels indicates that the F3 fault and the northwest water-conducting fracture zone may be the preferred flow channels for seawater to recharge mine water. The research results are of great significance to promote the safe mining of coastal mines around the world.

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“…The water-rock interaction theory that between geological structures and geofluids is a fundamental problem in many engineering fields with respect to the engineering geology, hydraulic engineering and mining et al, more specifically, Karst mountain instabilities (Adji and Bahtiar 2016;Gao et al 2020), groundwater bursting in the coal mine (Wu et al 2004;Yao et al 2016), and landslides in RBM regions (Zhang et al 2015), etc. These disasters all have the common scientific problems relating to the seepage and defects of rocks.…”

Section: Introductionmentioning

confidence: 99%

A new proposed method for observing fluid in rock fractures using the enhanced X-ray image of digital radiography

Sun

Long

Liu

et al. 2021

Preprint

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Fluid in rock fractures always continually induces geo-catastrophe in water-rock system engineering. Intuitively observing fluid in fractures is the key method to reveal interaction mechanism of the water-rock under different engineering background, and provide some insights for solving engineering issues. This study proposes the visual method of fluid in rock fractures using enhanced X-ray image digital radiography (EXIDR), and carries out the coupled hydro-mechanical tests on the basis of the material scale of carbonate rocks, red bed mudstone (RBM) and coals. The experimental results show the transition mechanism of pipe flow (PF) to fissure flow (FF) during carbonate rock failures. The flow regime has undergone an evolution process from laminar flow to turbulent flow, also of this change with the fractal characteristics of PF-FF in carbonate rocks under multilevel stress loading. Also, the damage coefficient of RBM under coupled hydrodynamics and multilevel stress loading is non-linearly increasing. Therefore, the initial permeability of RBM under hydrodynamics is significant for geo-hazards prevention in the engineering, which are induced by the seepage and diffusion effects. Besides, the mean square flow (MSF) describes the flow rate varies as the fracture growth and extension, i.e. the fractional exponential evolution law that has a transition changes from super-diffusion flow to sub-diffusion flow. This indicates that fluid in fractures show the double behaviors of anomalous diffusion and nonlinear flow during coal and rock failures.

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Determining sources of mine water based on hydraulic characteristics analysis of a fault system

Cited by 10 publications

References 18 publications

Geodynamic and hydrodynamic conditions of the Urna and Ust‐Tegus oil fields

Geodynamic and hydrodynamic conditions of the Urna and Ust‐Tegus oil fields

Interpreting Mine Water Sources and Determining Mixing Ratios Based on the Spatial and Chemical Characteristics of Bedrock Brines in a Coastal Mine

A new proposed method for observing fluid in rock fractures using the enhanced X-ray image of digital radiography

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