swive knife

The paper determines compaction degree of subgrade making use of pumped sand,cutting ring,nuclear density instrument and drop hammer frequent mensuration methods.

采用灌砂法、环刀法、核子密度仪法、落锤频谱式快速测定仪(LY-I仪)法4种方法对检测路基压实度的测试结果进行了比较分析;并以灌砂法作为现场测定压实度的标准方法,将其他方法与灌砂法进行回归标定,得出了相关关系,进一步证实了采用灌砂法作为路基压实度检测的标准方法是值得推广的。

To improve efficiency and veracity of soil sampling in testing bulk density, the cutting ring method and in situ soil tube method were combined and a multi-segment in situ soil sampler was designed.

为了提高土壤容重测定中土样采集的效率和精准性,将环刀法和原状取土管法结合,进行了分段式原状取土器的研制。

Design of revolving tool holder for machining roller pass with large curvature radius dimension;

用于轧辊孔型加工的大曲率半径回转刀架设计