Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Seepage Characteristics Study of Single Rough Fracture Based on Numerical Simulation

Version 1 : Received: 5 May 2022 / Approved: 9 May 2022 / Online: 9 May 2022 (06:13:55 CEST)

A peer-reviewed article of this Preprint also exists.

Wang, S.; Zhang, Q.; Zhao, L.; Jin, Y.; Qian, J. Seepage Characteristics Study of Single Rough Fracture Based on Numerical Simulation. Appl. Sci. 2022, 12, 7328. Wang, S.; Zhang, Q.; Zhao, L.; Jin, Y.; Qian, J. Seepage Characteristics Study of Single Rough Fracture Based on Numerical Simulation. Appl. Sci. 2022, 12, 7328.

Abstract

A single fracture is the basic unit of fracture medium, and the roughness of fracture wall surface is an important factor influencing hydraulic characteristics of the flow in bedrock fracture. However, effects of the shape and density of roughness elements (various bulges/pits on rough fracture wall surfaces) on water flow in a single rough fracture have not been thoroughly discovered. Thus the water flow in single fracture with different shapes and densities of roughness elements was simulated by using Fluent software in this study. The results show that in wider fractures the flow rate mainly depends on fracture aperture, while in narrow and close fracture medium the surface roughness of fracture wall is the main factor of head loss of seepage; there is a negative power exponential relation between the hydraulic gradient index and the average fracture aperture, i.e. with the increase of fracture aperture, the relative roughness of fracture and the influence weight of hydraulic gradient both decrease; and in symmetrical-uncoupled fractures there is a super-cubic relation between the discharge per unit width and average aperture. Above results would help to deepen the understanding of rough fracture seepage.

Keywords

seepage characteristics; single fracture; roughness; numerical simulation; Fluent

Subject

Environmental and Earth Sciences, Geophysics and Geology

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.