Results 121 to 130 of about 1,645,202 (341)
Worker exposure to silica during hydraulic fracturing [PDF]
"Hydraulic fracturing or 'fracking' is a process used_to 'stimulate' well production in the oil and gas industry. It is not a new process, but its use has increased significantly in the last 10 years because_of new horizontal drilling and multi-stage ...
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Deep Underground Science and Engineering, EarlyView.Fluid flow through a single fracture is commonly described by the cubic law. However, deviations from this model are expected because natural fracture surfaces are rough and in contact with each other in discrete regions. In this study, the interactions between fracture closure, contact area, and hydraulic characterization of mesoscopic‐scale rough ...
Chenghao Han +5 more
wiley +1 more source
, 2019 The eXtended Finite Element Method (XFEM) has developed to a standard tool in fracture mechanics. The method enriches the approximation space such that inner-element cracks are considered without loss of accuracy.
Fries, Thomas-Peter
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, 2021 , 2021Hydraulic fracturing (HF) experiments were conducted at the Grimsel Test Site (GTS), Switzerland, with the aim to improve our understanding of the seismo-hydro-mechanical processes associated with high-pressure fluid injection in a moderately ...
Amann, Florian +4 more
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Review and prospects of shear test of bolted rock joints
Deep Underground Science and Engineering, EarlyView.The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren +4 more
wiley +1 more source
Experimental study on mechanical properties of rock degraded by hydraulic fracturing
Meitan kexue jishuThe accurate determination of the degree of mechanical property degradation of rock layers after hydraulic fracturing is the basis for revealing the pressure relief mechanism of hydraulic fracturing and evaluating the fracturing effect.
Taotao DU +5 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.The effects of grout strength and thickness on the shear behavior of bolt–grout interfaces (BGI) under constant normal stiffness conditions are investigated. Shear strength, failure modes, and acoustic emission characteristics are examined. The findings reveal that grout strength exerts a significantly greater influence on BGI shear strength and ...
Sunhao Zhang +5 more
wiley +1 more source
Earth Energy ScienceDeveloping low-permeability Coalbed Methane (CBM) reservoirs can significantly benefit from a comprehensive understanding of hydraulic fracture nucleation and propagation mechanisms, particularly in anthracite CBM reservoirs.
Saipeng Huang +7 more
doaj +1 more source
A variational phase field model of hydraulic fracturing
, 2019 Since their inception in the mid-90's, variational phase-field models of fracture [1] have steadily gained popularity. One of their strengths, the ability to handle complex topologies with unknown crack paths and the interaction between multiple cracks ...
Tanne, Erwan
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Deep Underground Science and Engineering, EarlyView.A scientometric analysis of 2449 journal articles and a comprehensive review of 336 papers were conducted, discussing and identifying challenges and research gaps in rockburst prediction and prevention and proposing an ontology‐based framework for better decision‐making in underground excavations. Abstract With underground engineering projects becoming
Hongchuan Yan +6 more
wiley +1 more source