According to the result of roller compaction test, points of construction of stabilized soft clay with lime are discussed.

The quality,the difficulty and the cost of roller compaction of concrete face rockfill dam(CFRD) is directly affected by the choice of roller compaction parameters,reasonable roller compaction parameters should be chosen through in-situ roller compaction test before CFRD construction,and design controlling index of compaction is checked.

Large-scale compaction tests have been carried out and compared with design compacted standards before embankment in order to ensure embankment parameter for dam construction.

Productive rolling experiment on material from excavated debris for construction of Dalong Earth-rock Fill Dam;

Based on the actual engineering an introduction is made on the methods and experience to gain the maximum dry density of fill whose grain size exceeds 60mm under the condition of optimum water content by compacting test.

Rationality analysis of field test method for evaluation of geological condition of deposit;

in the paper, following an example of the pebble river bed,the determination of the incipient velocities of nonuniform sands is represented,the effect of the shapes (kurtosis)of pebbles on the incipient velocities is analysed,and then,the field test results on the incipient motion law of nonuniform sands are introduced and compared with those of the theoretical analysis.

Based on the chief drawbacks of present field test methods for hydrodynamic dispersion coefficient, an improvement for the slug injection test in radial flow and a hydrodynamic dispersion test in two-dimen-sional flow are presented.