Study on the Mechanism of Water-Rock Interaction of the Black Rock Strata

Abstract:

Black rock strata with special engineering geological characteristics are distributed widely in different geological periods and areas. The scattered sulfide minerals in the rock strata are changed in a short time under the action of the oxygen-rich surface water and oxygen-rich groundwater. And the acidic water with strong erosiveness is formed. Then water--rock interaction between other minerals and the acidic water subsequently occurs with a series of chemical reactions. It can affect the stability of the black rocks themselves and other non-black rocks nearby directly, and cause engineering and environmental geological problems. Through the combination of engineering project and immersion test indoor, the mechanism of water-rock interaction of the black rock strata is researched. Engineering preventions and measures in the black strata region are proposed to avoid the damage to project and the ecological environment around.

• Periodical: Advanced Materials Research (Volumes 243-249)
• Pages: 3319-3324
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.243-249.3319
• Online since: May 2011
• Authors: Xin Liao, Xi Yong Wu, Jiang Tao Duan
• Keywords: Acidic Water, Black Rock Strata, Sulfide Mineral, Water-Rock Interaction

References

[1] K. Pye, J. A. Miller. Chemical and biochemical weathering of pyritic mudrock in a shale embankment[J]. Q. J. Eng. Geol. 1990,23, 365-381.

DOI: 10.1144/gsl.qjeg.1990.023.04.11

[2] A.B. Hawkins, G.M. Pinches. Cause and significance of heave at Llandough, Hospital, Cardiff: a case history of ground floor heave due to gypsum growth[J]. Q. J. Eng. Geol. 1987, 20, 41-57.

DOI: 10.1144/gsl.qjeg.1987.020.01.05

[3] Toshifumi IGARASHI, Takahiro OYAMA. Acidification of Reservoir and Leaching of Aluminum by Oxidation-reduction Reactions of Pyrite[J]. Journal of the Japan Society of Engineering Geology 38(5), 244-251. (In Japanese)

DOI: 10.5110/jjseg.38.244

[4] Toshifumi IGARASHI, Takahiro OYAMA, Noriyuki SAITO.Experimental Study on Acidification Potential of Leachate from Sedimentary Rocks Containing Pyrite[J]. Journal of the Japan Society of Engineering Geology 42(5), 214-221.(In Japanese)

DOI: 10.5110/jjseg.42.214

[5] Kang Ding, Geochemical kinetics of water-rock interaction[J]. Geology and Geochemistry, 1989 06, 29-38. (In Chinese)

[6] Xiyong Wu, et al. Study on weathering characteristics of black strata[J]. Geology and Geochemistry, 2001,29 (2) , 17-23. (In Chinese)

[7] Xiyong Wu, Youyi Wei, Jian Luo. Weathering degree and properties of Doushantuo group black rock in the west of Hunan Province[J]. Hydrogeology and Engineering Geology, 2003,1, 9-12,17. (In Chinese)

[8] Xiyong Wu, Baolong Zhu, Jian Luo. Analysis on the process and thermomechanics of the black rock weathering [M]. Beijing: Science Press,2008. (In Chinese)