Application of fracture network model with crack permeability tensor on flow and transport in fractured rock

Pan, Jian Bang; Lee, Chen Chang; Lee, Cheng Haw; Yeh, H. C.; Lin, Hong‐Ping

doi:10.1016/j.enggeo.2010.08.007

Cited by 53 publications

(10 citation statements)

References 27 publications

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“…As noted earlier, the key control on degassing at active lava domes lies in the ability of fracture coalescence to create a permeable network. Using the tomographic reconstruction of the permeable fracture network, we assess the permeability (κ) of the experimentally developed shear zones (e.g., Bai et al, 2011;Pan et al, 2010) via the porosity (φ) following the relationship (Mueller et al, 2005):…”

Section: Imaging the Permeable Fracture Networkmentioning

confidence: 99%

Reconstructing magma failure and the degassing network of dome-building eruptions

Lavallée¹,

Benson²,

Heap³

et al. 2013

Geology

112

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International audienceVolcanic eruptions are regulated by the rheology of magmas and their ability to degas. Both detail the evolution of stresses within ascending subvolcanic magma. But as magma is forced through the ductile brittle transition, new pathways emerge as cracks nucleate, propagate, and coalesce, constructing a permeable network. Current analyses of magma dynamics center on models of the glass transition, neglecting important aspects such as incremental strain accommodation and (the key monitoring tool of) seismicity. Here, in a combined-methods study, we report the ﬁrst high-resolution (20 μm) neutron-computed tomography and microseismic monitoring of magma failure under controlled experimental conditions. The data reconstruction reveals that a competition between extensional and shear fracturing modes controls the total magnitude of strain-to-failure and importantly, the geometry and efﬁciency of the permeable fracture network that regulates degassing events. Extrapolation of our ﬁndings yields magma ascent via strain localization along conduit margins, thereby providing an explanation for gas-and-ash explosions along arcuate fractures at active lava domes. We conclude that a coupled deformation-seismicity analysis holds a derivation of fracture mechanisms and network, and thus holds potential application in forecasting technologies

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Section: Imaging the Permeable Fracture Networkmentioning

confidence: 99%

Reconstructing magma failure and the degassing network of dome-building eruptions

Lavallée¹,

Benson²,

Heap³

et al. 2013

Geology

112

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“…the trace length, space, fracture surface etc.) obey some certain distribution functions, then it implements Monte-Carlo method to simulate fracture network according to these distribution functions (Pan et al, 2010;Smith et al, 2011). The second method is a direct method, and it generates fracture network by some methods or softwares as 3DEC (3 Dimensional Distinct Element Code) software.…”

Section: Generation Of the Three-dimensional Fracture Network Modelmentioning

confidence: 99%

The anisotropic seepage analysis of water-sealed underground oil storage caverns

Chong

Deng

et al. 2013

Tunnelling and Underground Space Technology

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“…Dowd et al [16] cut the actual granite into layers and obtained true three-dimensional fracture network data sets through direct measurement and analysis. Pan et al [17] built the 3D fracture model with crack permeability tensor to analyze the flow and transport in fractured rock.…”

Section: D Stochastic Modeling Of Minor Statistical-scale Jointed Romentioning

confidence: 99%

3D Multiscale Integrated Modeling Approach of Complex Rock Mass Structures

Han

Wang³

et al. 2014

Mathematical Problems in Engineering

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Based on abundant geological data of different regions and different scales in hydraulic engineering, a new approach of 3D engineering-scale and statistical-scale integrated modeling was put forward, considering the complex relationships among geological structures and discontinuities and hydraulic structures. For engineering-scale geological structures, the 3D rock mass model of the study region was built by the exact match modeling method and the reliability analysis technique. For statistical-scale jointed rock mass, the random network simulation modeling method was realized, including Baecher structure plane model, Monte Carlo simulation, and dynamic check of random discontinuities, and the corresponding software program was developed. Finally, the refined model was reconstructed integrating with the engineering-scale model of rock structures, the statistical-scale model of discontinuities network, and the hydraulic structures model. It has been applied to the practical hydraulic project and offers the model basis for the analysis of hydraulic rock mass structures.

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Application of fracture network model with crack permeability tensor on flow and transport in fractured rock

Cited by 53 publications

References 27 publications

Reconstructing magma failure and the degassing network of dome-building eruptions

Reconstructing magma failure and the degassing network of dome-building eruptions

The anisotropic seepage analysis of water-sealed underground oil storage caverns

3D Multiscale Integrated Modeling Approach of Complex Rock Mass Structures

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