Uncompacted location and grouting saturation degree in the zone of anchorage bar are the two main parameters for judging rock bolts quality.

摘要锚固体内不密实的位置饱度是评价锚杆质量的两重要参数。

In the case of mudstone to be a source rock, the uncompacted mudstone would have a strong capability of hydrocarbon concentation sealing to seal gas in diffusive phase.

本文在研究盖层封机理的基础上,分析了欠压实泥岩在封益中的作用。