On-site testing is an important part of dynamic compaction construction. Therefore, before large-scale construction, site experiments should be carried out at sites with an area of not less than 400_in order to obtain planning data. Test assignments generally have the following aspects:
1. Overground and deep deformation. The purpose of the above ground deformation study is:
(1) Understanding the influence scale of surface arching and the change of cushion compactness;
(2) Discuss the relationship between dynamic compaction energy and compaction settlement, in order to confirm the best single-point compaction energy;
(3) To confirm the uniform settlement of the site and the compaction settlement of tamping, so as to study the reinforcement effect of dynamic compaction.
The methods of deformation research are ground settlement observation, deep settlement observation and horizontal displacement observation.