1. Before dynamic compaction, the crane, pulley block and coupler shall be inspected, and trial hoisting and trial compaction shall be carried out. Dynamic compaction can be carried out only when everything is normal.

2、强夯置换起吊夯锤保持匀速，不得高空长时间停留，严禁急升猛降防锤脱落。停止作业时，将夯锤落地面。夯锤起吊后，臂杆和夯锤下及附近15m范围内严禁站人。

2. The dynamic compaction replacement lifting hammer shall be kept at a uniform speed, and shall not stay at high altitude for a long time. It is strictly prohibited to rise and fall sharply to prevent the hammer from falling off. When the operation is stopped, drop the rammer to the ground. After the rammer is lifted, no one is allowed to stand under the arm and rammer and within 15m nearby.

3、强夯地基置换施工过程中现场技术人员对各项参数及施工情况进行详细记录。派专人察看现场并做好记录，在满夯完成后(夯机撤走前)，通知项目办和总监办的相关人员到现场进行质量检查和工程数量的确认。

3. During the replacement construction of dynamic compaction foundation, the on-site technicians shall make detailed records of various parameters and construction conditions. Assign special personnel to inspect the site and make records. After the full tamping is completed (one day before the tamping machine is removed), notify the relevant personnel of the project office and the director's office to go to the site for quality inspection and confirmation of engineering quantity.

4、强夯地基施工前，需要对拟强夯场地进行整平，保证强夯机就位和夯锤落地平稳。应场地上空和地下障碍物。其范围为：单击夯击能在800~2000KN.m时，夯击点距离障碍物水平距离应大于20m，距离地下障碍物的水平距离应大于10m，距离空中障碍物的距离应大于18m。当单击夯击能再加大时，上述*距离应适当加大。当需要再高压线下作业时，需要满足电力部门的相关要求，并加强**生产防护措施。

4. Before the construction of dynamic compaction foundation, the proposed dynamic compaction site needs to be leveled to ensure that the dynamic compactor is in place and the hammer falls stably. Obstacles above and below the site shall be removed. The removal range is: the single tamping energy is 800 ~ 2000kN M, the horizontal distance from the tamping point to the obstacle shall be greater than 20m, the horizontal distance from the underground obstacle shall be greater than 10m, and the distance from the air obstacle shall be greater than 18m. When the click tamping energy increases again, the above * distance shall be increased appropriately. When it is necessary to work under the high-voltage line, it is necessary to meet the relevant requirements of the power department and strengthen * * production protection measures.

5、密切注意夯击中的异常变化，在构造物顶面强夯作业时，加强观察，一旦发现危及构造物的*时要立即停打，通知驻地办、总监办、管理处、设计人员研究处理。

5. Pay close attention to the abnormal changes caused by tamping. During the dynamic compaction operation on the top surface of the structure, strengthen the observation. Once the * endangering the structure is found, stop the tamping immediately and notify the resident office, director's office, management office and designers to study and deal with it.

6、强夯置换路床范围内设计有设计土工格栅的段落，应在铺土工格栅前进行强夯。

6. The dynamic compaction shall be carried out within the design range of the geogrid paved section before the dynamic compaction.

7、对于正常地基强夯施工，应在相应的施工层面距离两路肩3m范围内进行强夯，距离两路肩3m内不得强夯。

7. For normal foundation dynamic compaction construction, dynamic compaction shall be carried out within 3M of the corresponding construction layer from the two shoulders, and dynamic compaction shall not be carried out within 3M from the two shoulders.

8、满夯完成之后测量队及时对本层的强夯范围轮廓线进行平面坐标测量并绘制成图，图中应明确标出路中线和里程桩号、边线、强夯轮廓线及本行基层高程。

8. After the completion of full compaction, the survey team shall timely measure the plane coordinates of the contour line of the dynamic compaction range of this layer and draw a map. The center line, mileage stake number, sideline, dynamic compaction contour line and the base elevation of this line shall be clearly marked in the map.

9、强夯地基置换施工中如发现歪锤时，需用填料(或土)将坑底垫平，才能继续施夯。

9. In case of crooked hammer found during dynamic compaction foundation replacement construction, fill (or soil) shall be used to level the pit bottom before compaction can continue.

10、如遇夯锤的通气孔堵塞，应立即开通。

10. If the vent hole of the rammer is blocked, it shall be opened immediately.

11、表层土过干(尤其是满夯)应采取增加含水量的措施。

11. If the topsoil is too dry (especially full compaction), measures shall be taken to increase the water content.

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