水-岩作用对岩石表面微观形貌影响的试验研究

利用精度高达0.5 μm的Talysurf CLI 2000三维表面激光形貌仪，对经矿井深部地下水作用前后的5种不同岩性的岩石试件进行形貌扫描，探讨试件表面的微观形貌的变化特征并对12个形貌参数作出定量分析对比。试验结果发现，水-岩作用后岩石表面形貌高度的离散性、偏离基准面的程度、粗糙程度变大，高度的分布概率更为集中，由负偏态变为正偏态且高度分布的对称性好于作用前。峰点算术平均曲度Ssc都有规律地降至0.62附近，岩石表面的高差减小，更具协调性。水化作用与水解、溶解作用同时发生，但水化作用效应大于其水解、溶解作用效应。

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

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.