The primary task of construction is foundation, but what problems should be paid attention to in dynamic compaction construction?

1、在雨季施工时避免夯坑积水，如夯坑内积水或因粘性土产生锤底吸力增大时，需采取措施排除，不得---起锤。

1. During the construction in rainy season, avoid ponding in the tamping pit. If the water in the tamping pit or the suction at the bottom of the hammer increases due to cohesive soil, measures shall be taken to eliminate it, and it is not allowed to lift the hammer.

2、强夯夯锤垂直落下时若夯坑底面出现倾斜时，应及时处理回填，不得---夯击。

2. When the dynamic rammer falls vertically, if the bottom surface of the ramming pit inclines, the backfill shall be treated in time, and the tamping is not allowed.

3、夯锤下沉50cm以上时，起重机提升不要一次猛起，要先试提，当机械无异常现象时，方可起升。

3. When the rammer sinks more than 50cm, the crane should not be lifted suddenly at one time, but should be lifted first. When there is no abnormal phenomenon in the machinery, it can be lifted.

4、强夯机变换夯位后，必须重新检查夯机的水平情况，不平时，要调整到稳固的水平状态，然后再将夯锤提起10-30cm，检查整机的稳定性，确认可靠后，方可作业。

4. After the dynamic rammer changes the tamping position, it is necessary to re check the level of the rammer. If it is not normal, it should be adjusted to a stable horizontal state, and then the rammer should be lifted 10-30cm to check the stability of the whole machine. The operation can be started only after the rammer is confirmed to be reliable.

5、严禁在非作业时将夯锤悬挂空中，作业完毕后，应将锤平稳地放在地面上。

5. It is strictly forbidden to hang the rammer in the air during non operation. After the operation, the hammer should be placed on the ground stably.

6、强夯工程施工时，必须注意现场周围的建筑物，当强夯所产生的震动对建筑物或设备产生有害影响时，必须采取防震措施。同时在施工中要加强观察，发现问题及时处理，防止意外事故发生。

6. During the construction of dynamic compaction project, attention must be paid to the buildings around the site. When the vibration produced by dynamic compaction has a harmful impact on buildings or equipment, anti vibration measures must be taken. At the same time, the observation should be strengthened in the construction, and the problems should be handled in time to prevent accidents.

7、如遇六级以上大风或能见度低时，不能进行强夯作业。有雷电时须停止作业，所有人员暂退距离处，直到闪电停止。

7. In case of gale above level 6 or low visibility, dynamic compaction is not allowed. When there is lightning, stop operation, and all personnel shall retreat to a safe distance until the lightning stops.