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Numerical Simulation Study of Variable-Mass Permeation of the Broken Rock Mass under Different Cementation Degrees
Joint Authors
Li, Chong
Yao, Banghua
Ma, Qingqing
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-09-30
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
In order to analyze variable-mass permeation characteristics of broken rock mass under different cementation conditions and reveal the water inrush mechanism of geological structures containing broken rock masses like karst collapse pillars (KCPs) in the coal mine, the EDEM-FLUENT coupling simulation system was used to implement a numerical simulation study of variable-mass permeation of broken rock mass under different cementation conditions and time-dependent change laws of parameters like porosity, permeability, and mass loss rate of broken rock specimens under the erosion effect were obtained.
Study results show that (1) permeability change of broken rock specimens under the particle migration effect can be divided into three phases, namely, the slow-changing seepage phase, sudden-changing seepage phase, and steady seepage phase.
(2) Specimen fillings continuously migrate and run off under the water erosion effect, porosity and permeability rapidly increase and then tend to be stable, and the mass loss rate firstly rapidly increases and then gradually decreases.
(3) Cementation degree has an important effect on permeability of broken rock mass.
As cementing force of the specimen is enhanced, its maximum mass loss rate, mass loss, porosity, and permeability all continuously decrease.
The study approach and results not only help enhance coal mining operations safety by better understanding KCP water inrush risks.
It can also be extended to other engineering applications such as backfill paste piping and tailing dam erosion.
American Psychological Association (APA)
Li, Chong& Yao, Banghua& Ma, Qingqing. 2018. Numerical Simulation Study of Variable-Mass Permeation of the Broken Rock Mass under Different Cementation Degrees. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1115861
Modern Language Association (MLA)
Li, Chong…[et al.]. Numerical Simulation Study of Variable-Mass Permeation of the Broken Rock Mass under Different Cementation Degrees. Advances in Civil Engineering No. 2018 (2018), pp.1-8.
https://search.emarefa.net/detail/BIM-1115861
American Medical Association (AMA)
Li, Chong& Yao, Banghua& Ma, Qingqing. Numerical Simulation Study of Variable-Mass Permeation of the Broken Rock Mass under Different Cementation Degrees. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1115861
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1115861