The fundamental theory and test method of field CBR test are introduced.

Through the field measurement of the braking length, this paper analyzes on the main causes influencing the testing precision, puts forward some improving suggestions, and makes rational stipulations for the maximum pulling load and maximum running speed adopted by the locomotive in the future daily operation.

In order to learn the actuality of air pollution in new decoration residence and improve indoor air quality, and provide the foundation that constructs the control countermeasure of indoor air pollution, we make the field measurement about indoor air pollution of new decoration residence of some city.

Based on the results of field measurement and questionnaire from ten households, presents the status of indoor and outdoor VOC concentration and personal exposure.

Research on field test of soil nailing for deep excavation;

Model test and field test on the turbine in the Dachaoshan hydropower station;

Research on behaviors of soil nailing by field test;

And the research on in-situ test of prestressed anchor cable composite soil nailing is seldom seen.

According the in-situ test and the calculating result of the finite element program, the stress and deformation properties of the culvert with high embankment are studied.

Through the in-situ tests for the horizontal displacement and the soil nailing tension of a foundation pit,analyzing the change regulation and mechanical characteristies of soil nailing during construction,giving some benificial suggestions.