What are the important steps of using dynamic compaction machine?

1、现场的操控桩要有显着的标志，加以维护，并定时进行复核查看；测放的夯点方位，使用显着的标志标出夯位中点。

1. The control piles on the site shall be marked, maintained and rechecked regularly; The position of the tamping point measured and set out shall be marked with a significant mark to mark the midpoint of the tamping position.

2、路距确认后，确定落距操控绳。

2. After the road distance is confirmed, determine the falling distance and control the rope.

3、夯锤气孔要坚持通畅，假如遇到阻塞，应随时将塞土铲除。

3. The air hole of the rammer shall be unobstructed. If it is blocked, the soil plug shall be removed at any time.

4、在强夯施工过程中，发现夯锤违背夯坑中，应当即调整对中，夯击后发现坑底倾斜比较大，需求及时用填料将坑底垫平后，方可持续夯击。

4. In the process of dynamic compaction, if it is found that the rammer violates the tamping pit, it shall be adjusted and centered immediately. After tamping, it is found that the pit bottom is inclined relatively large. It is required to level the pit bottom with filler in time before sustainable tamping.

5、要仔细做好施工记载，对每个夯点的沉降量都要进行观测和记载，并把握好停锤规范。

5. The construction records shall be carefully made, the settlement of each tamping point shall be observed and recorded, and the hammer stopping specification shall be grasped.

6、要亲近重视反常状况，对夯沉量反常、夯锤弹起、地表拱起、拔锤困难都要加强监测，照实记载，并及时陈述工程师来研讨解决办法。

6. We should pay close attention to the abnormal situation, strengthen the monitoring of the abnormal tamping settlement, the rebound of tamping hammer, the surface arching and the difficulty of pulling hammer, keep the records according to the facts, and timely state the engineers to discuss the solutions.

7、因为场所内填土的随意性，碎石含量不均一性，在夯击过程中，假如呈现单个夯坑深度过大，拔锤困难或地表拱起量过大，应当即中止夯击，向夯坑中填满开山碎石回填料厚，再持续夯击，直到停锤规范。假如呈现整片相似操控不住的状况，要当即检测，进行归纳剖析，再决议选用换土或强夯设备置换进行处理。

7. Because of the randomness of the filling in the site and the heterogeneity of the gravel content, in the process of tamping, if the depth of a single tamping pit is too large, it is difficult to pull out the hammer or the surface camber is too large, the tamping shall be stopped immediately, the thickness of the mountain opening gravel backfill shall be filled into the tamping pit, and then the tamping shall be continued until the hammer is stopped. If the whole piece is similar and cannot be controlled, it shall be detected immediately, summarized and analyzed, and then decided to select soil replacement or dynamic compaction equipment for replacement.