Experimental Study of Joint Roughness Influence on Fractured Rock Mass Seepage
| Autor: | Baoliang Zhang, Chunquan Dai, Zhongxi Tian, Zhaobo Meng, Qingshuang Zhao |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
QE1-996.5
Article Subject 0211 other engineering and technologies Geology 02 engineering and technology 010502 geochemistry & geophysics Overburden pressure 01 natural sciences Stress (mechanics) Permeability (earth sciences) Curve fitting General Earth and Planetary Sciences Coupling (piping) Geotechnical engineering Equidistant Rock mass classification Joint (geology) 021101 geological & geomatics engineering 0105 earth and related environmental sciences |
| Zdroj: | Geofluids, Vol 2021 (2021) |
| ISSN: | 1468-8123 1468-8115 |
| Popis: | Surrounding rock pressure, water pressure, and joint roughness are the important factors that affect the fractured rock mass seepage. It is of great significance to quantify the influence of these factors through experiments. In this study, rock fracture joint surfaces were measured. Next, 3D coordinates of joint surfaces were extracted with using the Geomagic software, and joint roughness was described using the mean variance of protrusion height and equidistant fluctuation angle, which were acquired through calculation. Stress-seepage coupling test was then conducted on the samples on a triaxial apparatus, and the effects of confining stress and water pressure on the permeability of single-fracture rock were investigated. On the basis of the relationship between the parameters in data fitting expression and the mean variance of protrusion height and equidistant fluctuation angle, the calculation formula of the permeability coefficient including joint roughness, confining pressure, and seepage pressure difference was derived. |
| Databáze: | OpenAIRE |
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