Dynamic compaction is a kind of construction method to enhance the bearing capacity of foundation and reduce the deformation. However, there may be rubber soil in the foundation after dynamic compaction. In view of this phenomenon, the dynamic compaction company summarized the causes and prevention measures, in order to provide reference for Foundation Dynamic Compaction Engineering.

在强夯施工的现场，有时候地基的水含量丰富，一旦含水量达到一定值夯击就有可能形成橡皮土。如果施工场地遭遇高强度的降雨侵袭，就会加大地基土壤中含水量，极易产生橡皮土。

In the dynamic compaction construction site, sometimes the water content of the foundation is rich, once the water content reaches a certain value, the ramming may form rubber soil. If the construction site is attacked by high-intensity rainfall, it will increase the water content in the foundation soil, and it is easy to produce rubber soil.

为了使强夯机械夯击地面顺当平稳，必须让地层中的孔隙水压力得到释放，同时掉孔隙中的水分。另外在满夯施工后，强夯公司开始平整场地，如果使用轮式车辆的重复碾压地基，也会出现上述现象。

In order to make the ground smooth, the pore water pressure must be released and the water in the pore must be removed. In addition, after full tamping construction, dynamic compaction company starts to level the site. If wheel vehicles are used to repeatedly roll the foundation, the above phenomenon will also appear.

针对地基含水量高的情况，强夯公司一般会在设置竖直方向的排水体结构，或者在场地上铺设一层砂石垫层，同时会留有足够的间歇时间，等到孔隙水压力完全消散，再满夯或者实施强夯置换。

In view of the high water content of the foundation, the dynamic compaction company will generally set the vertical drainage structure, or lay a layer of sand and gravel cushion on the site, and leave enough intermittent time until the pore water pressure completely dissipates, and then fully tamp or implement dynamic compaction replacement.

若满夯之前下雨，被推入夯坑中的土壤会吸水，因此必须提前进行覆盖防水作业。在满夯操作完毕后，严令禁止轮式车辆碾压。出现小面积的橡皮土可安排强夯施工人员及时挖除，接着更换一些干燥土石材料填入补夯。反之，橡皮土面积大而且土质薄，那就刻使用推土机或者其他方法进行处理。

If it rains before full tamping, the soil pushed into the tamping pit will absorb water, so it must be covered and waterproof in advance. After the full tamping operation, it is strictly forbidden to roll by wheeled vehicles. If there is a small area of rubber soil, the dynamic compaction construction personnel can be arranged to dig it out in time, and then some dry earth and stone materials can be replaced to fill in and tamp. On the contrary, the rubber soil area is large and the soil is thin, so use bulldozer or other methods to deal with it.