How much is the price of dynamic compaction machine linked with which? The falling hammer of dynamic compaction equipment is not stable, the pit wall collapses; the layer thickness is too large, or the tamping energy is not good, and the dynamic compaction equipment does not reach the useful influence depth. It has a bad effect on the buildings nearby. Due to strong vibration caused by dynamic compaction, the bad influence on the surrounding buildings was not fully considered before construction.
When the dynamic compaction foundation treatment engineering defects occur, the following methods can be selected to stop the treatment. When tamping the fill, the water content of the fill shall be controlled to avoid ramming on the undisturbed soil and backfill soil with excessive water content; when there is water on the surface, drainage ditch shall be set; if there is open water, the water shall be reduced to the base.
Dry soil, lime powder and other water absorbing materials can be evenly mixed into the soil to drop the water content, or the rubber soil should be scarified, dried in the sun and air dried to a better moisture content range, and then compacted and compacted.
When the surface soil of subgrade dynamic compaction site is weak or the open water level is high, and the ponding at the bottom of the ramming pit affects the construction, it is advisable to manually lower the open water level or pave the loose data with a certain thickness to make the open water level lower than 2m below the pit bottom surface. The ponding in the pit or the site shall be removed in time. For the foundation with high saturation and shallow buried depth of open water level, effective auxiliary measures should be confirmed by trial compaction, such as whether vertical drainage body can be set or dynamic compaction replacement technology can be directly adopted.
When the price of dynamic compaction machine equipment is in the mature experience area, when the geological conditions are the same, we can directly adopt the Shengli technology and parameters instead of stopping the special trial compaction. However, before the construction, the small experimental construction should be stopped, and the dynamic compaction machine should be rented to check whether the construction technology and dynamic compaction design parameters can meet the site geological conditions.