Author
Xianyu Zhao
Bio: Xianyu Zhao is an academic researcher from Wuhan University. The author has contributed to research in topics: Hydraulic fracturing & Slope stability analysis. The author has an hindex of 4, co-authored 6 publications receiving 254 citations.
Papers
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TL;DR: In this article, the effect of macroscopic mechanical properties on the initiation and size of cracks is studied based on various combinations of particle flow calculations, after which the relevant empirical formula is proposed.
177 citations
TL;DR: Wang et al. as mentioned in this paper investigated the effect of natural existing fractures on fluid-driven hydraulic fracture by analyzing the variation of fracture radius, cumulative crack number, and growth rate of porosity versus injection time.
111 citations
TL;DR: In this paper, a 3D numerical simulation and safety assessment of the slope around the flood discharge tunnel at Yangqu hydropower station is implemented in FLAC3D, and 3D slide arcs of good shape are obtained.
20 citations
TL;DR: In this article, a blocky discrete element model coupled with fluid flow is used to explore the role of the pre-existing texture of natural fractures on the form of the resulting stimulated reservoir volume (SRV).
16 citations
TL;DR: In this article, a grain texture model (GTM) was incorporated into granular mechanics modeling by the distinct element method (DEM) to capture all significant features of this macroscopic mechanical evolution of damage through failure.
8 citations
Cited by
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TL;DR: In this article, the relationship of cracks development to porosity changing characteristics was introduced to quantitatively determine the height of the local gas conducting fracture zone (GFZ) in No. 7435 Face overlying strata of Kongzhuang Coal Mine, China.
184 citations
TL;DR: In this article, the authors carried out fully coupled multiscale numerical analysis to investigate some key coupled processes of fluid-driven fracture propagation in naturally fractured rock mass and demonstrated that with an advanced numerical modeling tool, the complex fracturing associated with hydraulic fracturing in naturally-frained rock mass can be qualitatively analyzed and the extent of various uncertainties can be assessed.
Abstract: Naturally fractured rock mass is highly inhomogeneous and contains geological discontinuities at various length scales. Hydraulic fracture stimulation in such a medium could result in complex fracture systems instead of simple planar fractures. In this study, we carried out fully coupled multiscale numerical analysis to investigate some key coupled processes of fluid-driven fracture propagation in naturally fractured rock mass. The numerical analysis follows the concept of the synthetic rock mass (SRM) method initially developed in the discrete element method (DEM). We introduce a total of five case study examples, including fracture initiation and near wellbore tortuosity, hydraulic fracture interaction with natural fractures, multi-stage hydraulic fracturing with discrete fracture network (DFN), in-fill well fracturing and frac hits after depletion-induced stress change, and induced seismicity associated with fault reactivation. Through those case studies, we demonstrate that with an advanced numerical modeling tool, the complex fracturing associated with hydraulic fracturing in naturally fractured rock mass can be qualitatively analyzed and the extent of various uncertainties can be assessed.
160 citations
TL;DR: In this article, a novel enhanced coalbed methane (ECBM) extraction technology was demonstrated, which involves the integration of hydraulic slotting (HS) and hydraulic fracturing (HF), and the efficiency of the method is evaluated by field test.
154 citations
TL;DR: In this article, a cross-borehole hydraulic slotting technique was proposed for preventing and controlling coal and gas outburst disasters during coal roadway excavations, where a high-pressure water jet is applied in a coal body to cut a slot.
122 citations
TL;DR: In this article, a fully coupled 3D hydro-mechanical model with real porous seepage is presented for simulating hydraulic fracturing, which can capture crack initiation and propagation, and the fluid pressure evolution during hydraulic fracturing.
117 citations