【摘要】 在自然状态和接触面掺泥两种情况下,进行了砂岩、泥岩破裂面及其互层接触的摩擦试验。结果表明:在接触面掺泥时,抗剪强度的粘聚力和内摩擦角都有不同程度的降低,其中粘聚力下降明显,并且摩擦位移与剪应力关系曲线有明显不同,而且粘滑现象明显减弱。结合摩擦试验,研究了砂岩、泥岩在摩擦前后破裂面表面形态的变化,分析了它们的粗糙度及其起伏特性在摩擦前后的变化规律,以及表面特性和摩擦强度的关系。更多还原

【Abstract】 With natural surface and blended mud surface,friction properties of sandstone,mudstone’s broken surface is tested.It is shown that the strength of surface blended mud is reduced.It is different of the curves of stress-displacement of natural surface and bended mud surface,and the phenomena of mucosity are weakened when the contact surfaces are blended mud.Researching the topography character both fore and after the friction test,degree of roughness and fluctuation of surface are analyzed with statistics theory,and the relation of friction strength and topography character is approached.更多还原