›› 2010, Vol. 31 ›› Issue (11): 3452-3458.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study of effect of water-rock interaction on micto-topography of rock surface

CHEN Yu，CAO Ping，PU Cheng-zhi，LIU Ye-ke，LI Na   

  1. School of Resources and Safety Engineering, Central South University, Changsha 410083, China
  • Received:2009-11-09 Online:2010-11-10 Published:2010-11-24

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Abstract:

Aiming at analyzing the micro-local pattern and 12 topography parameters quantitatively, five kinds of rock under water-rock interaction of deep mine were tested using three-dimensional topography measurement instrument of Talysurf CLI 2000 type with high precision to achieve 0.5 μm. The test results conclude that the discreteness of rock surface height, the deviation degree of datum plane and the roughness are increased after water-rock interaction. The distribution probability of highness is more concentrated, which has changed from negative skewness to positive skewness and distributed more symmetrically than before. The arithmetic mean summit curvature of the surface(Ssc) has dropped regularly to about 0.62; while the highness difference of the rock surface is decreased and becomes more compatible. The process of hydration, hydrolysis and dissolution is simultaneous; but the effect of hydration is greater than hydrolysis and dissolution.

Key words: water-rock interaction, surface topography, parameters of topography, rock mechanics, three-dimensional parameter

CLC Number: 

  • TU 458
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