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.

Based on the field experiment, a theoretical analysis of time-lapse explode method is proposed in the paper.

Based on field experiment,the effects of the seabuckthorn flexible dam on water flow resistance are studied,and the effects of different planting parameters of the seabuckthorn flexible dam on water level and flow velocity in gully channel are discussed.

The effects of main test parameters on the process of pitting potential of carbon steels have been studied by quasi-steady-state polarization technique and metallographical analysis technique.

On the basis of the ammonia leaking test for one low pressure vessel, the test scope, test parameters and test method were determined.

Specification methods by test parameters are discussed;and tip-resistance design values of deep foundation based on Chinese codes,are obtained by multiplying a coefficient less than 1 with frc as the uniaxial compression strength of typical soft rock.