The main formation that causes waterpercolation into the cave is the unloading joint and the trivial cracks by weathering.
造成洞窟渗漏水的主要构造是卸荷节理和风化微裂缝。
2
Cyclic water injection increases swept volume through oil-waterpercolation effect and capillary pressure effect to improve water drive recovery factor.
周期注水技术主要是通过油水交渗效应、毛管压力作用，增加注水波及体积，从而提高水驱采收率的技术。
3
The result shows that cyclic water injection may be more effective if increasing oil-waterpercolation rate, standup pressure time and water holdup coefficient.