Preexisting research shows that there are three main factors that affect the borehole stability of Air-Drilling: mechanical reason, hydration reason and the Weaked surface instability reason.
研究表明，影响空气钻井井壁稳定的主要因素有三个：力学不稳定，水化不稳定和岩体破裂或弱面不稳定。
The method to predict wellbore stability is provided considering hydration and filtrate cake quality. In addition, this method was applied in field with better prediction results.
给出了考虑水化作用和滤饼质量后预测井壁稳定性的方法，同时将该方法应用于现场，取得了较好的预测效果。
The results show that the porosities of ZZLS material are available to facilitate vegetation. The hydration of cement increases the strength and water stability of the aggregate of the material.
结果表明，ZZLS材料的多孔结构有利于植被生长，水泥水化物是提高材料强度和团聚体水稳性的主要因素。
The results show that the porosities of ZZLS material are available to facilitate vegetation. The hydration of cement increases the strength and water stability of the aggregate of the material.
结果表明，ZZLS材料的多孔结构有利于植被生长，水泥水化物是提高材料强度和团聚体水稳性的主要因素。
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