Friction properties were studied while sandstone and mudstone fracture plane contacted with its interbed both in the natural state and on the condition of mud blended. 研究了自然状态和接触面掺泥两种情况下的砂岩、泥岩破裂面及其互层接触的摩擦特性。
The potential fracture plane at upper wall is similar to " 0.3 H " method; but the potential fracture plane at lower wall is near to the active Rankine earth pressure theory. 上部墙体潜在破裂面形状与“0.3H法”接近,而下部墙体潜在的破裂面形状与朗肯主动土压力结果接近;
This paper gives a description of the method of the control of fracture plane in rock blasting. 本文叙述了岩石爆破中利用切缝药包控制裂隙产生、扩展和止裂的断裂控制方法。
Structure plane is a fracture plane or substance differentiation plane in rock mass. 结构面是岩体中的破裂面或物质分异面。
Vibration reduction hole convenient the generation of fracture plane and reduce the blasting vibration velocity. 减震孔方便断裂面(FP)的产生,降低了振动速度。