Experimental Investigation of the Permeability Measurement of Radial Flow through a Single Rough Fracture under Shearing Action

Water flow is commonly observed in rock fractures, and this flow has considerable significance in many aspects of rock engineering. In this study, seepage-stress coupled tests were performed on fractured rock masses using a computer-controlled direct shear device for rock with seepage control. The f...

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Main Authors: Ran Tan, Junrui Chai, Cheng Cao
Format: Article
Language:English
Published: Wiley 2019-01-01
Series:Advances in Civil Engineering
Online Access:http://dx.doi.org/10.1155/2019/6717295
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author Ran Tan
Junrui Chai
Cheng Cao
author_facet Ran Tan
Junrui Chai
Cheng Cao
author_sort Ran Tan
collection DOAJ
description Water flow is commonly observed in rock fractures, and this flow has considerable significance in many aspects of rock engineering. In this study, seepage-stress coupled tests were performed on fractured rock masses using a computer-controlled direct shear device for rock with seepage control. The flow direction was radial. Eight types of test case were designed, and subgroup tests with varied normal stress, shear velocity, and roughness of fracture surface were conducted. The failure state of the fracture surface after the shear test, changes in shear stress, and fissure width and permeability under the above conditions were analyzed. The results include the following: the grain size of gouge fragments produced in rough fracture decreased with an increase in normal stress during shearing; the grain size of gouge fragments affected the fracture permeability; and the influence of shear velocity on the test results was mainly reflected after the peak strength. Additionally, a new expression describing fluid flow through fracture gouge is proposed.
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institution Kabale University
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language English
publishDate 2019-01-01
publisher Wiley
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series Advances in Civil Engineering
spelling doaj-art-18b4ccb8d6b9450ea1c832fa8e7920e92025-02-03T05:54:09ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/67172956717295Experimental Investigation of the Permeability Measurement of Radial Flow through a Single Rough Fracture under Shearing ActionRan Tan0Junrui Chai1Cheng Cao2Ph.D. Student, State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an 710048, ChinaProfessor, State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an 710048, ChinaMaster’s Student, State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an 710048, ChinaWater flow is commonly observed in rock fractures, and this flow has considerable significance in many aspects of rock engineering. In this study, seepage-stress coupled tests were performed on fractured rock masses using a computer-controlled direct shear device for rock with seepage control. The flow direction was radial. Eight types of test case were designed, and subgroup tests with varied normal stress, shear velocity, and roughness of fracture surface were conducted. The failure state of the fracture surface after the shear test, changes in shear stress, and fissure width and permeability under the above conditions were analyzed. The results include the following: the grain size of gouge fragments produced in rough fracture decreased with an increase in normal stress during shearing; the grain size of gouge fragments affected the fracture permeability; and the influence of shear velocity on the test results was mainly reflected after the peak strength. Additionally, a new expression describing fluid flow through fracture gouge is proposed.http://dx.doi.org/10.1155/2019/6717295
spellingShingle Ran Tan
Junrui Chai
Cheng Cao
Experimental Investigation of the Permeability Measurement of Radial Flow through a Single Rough Fracture under Shearing Action
Advances in Civil Engineering
title Experimental Investigation of the Permeability Measurement of Radial Flow through a Single Rough Fracture under Shearing Action
title_full Experimental Investigation of the Permeability Measurement of Radial Flow through a Single Rough Fracture under Shearing Action
title_fullStr Experimental Investigation of the Permeability Measurement of Radial Flow through a Single Rough Fracture under Shearing Action
title_full_unstemmed Experimental Investigation of the Permeability Measurement of Radial Flow through a Single Rough Fracture under Shearing Action
title_short Experimental Investigation of the Permeability Measurement of Radial Flow through a Single Rough Fracture under Shearing Action
title_sort experimental investigation of the permeability measurement of radial flow through a single rough fracture under shearing action
url http://dx.doi.org/10.1155/2019/6717295
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AT junruichai experimentalinvestigationofthepermeabilitymeasurementofradialflowthroughasingleroughfractureundershearingaction
AT chengcao experimentalinvestigationofthepermeabilitymeasurementofradialflowthroughasingleroughfractureundershearingaction