After nearly three months of intensive construction,，PetroChina Guangxi Petrochemical Refining and Chemical Integration Transformation and Upgrading Project，3200 points in high energy level construction area，All ramming completed。

Dynamic compaction construction is the foundation pretreatment project before the formal construction of the project.，The heavy hammer is dropped from a high place by using a large dynamic compactor.，Strong compaction of foundation soil，Change the pore distribution of foundation soil，O as to rapidly improve the bearing capacity of the foundation.，Reduce settlement。High energy level means high standard.、Strict requirements。

Tong yuanlin, engineer of Guangdong Zhongheng Heavy Base Industrial Co., Ltd., said.：“We must ensure that our construction area is in the position we designed.，You can't deviate，If you run away from 12000, hit 15000.，It will have an impact on the settlement of buildings in the future.。”

Each hammer ramming should not only be carried out in accordance with strict parameters and indicators.，More importantly, it has to be measured repeatedly.、Hammer。When the ramming settlement、The number of ramming meets the design requirements.，And meet the hammer stop criteria of the final design specification，The tamping pit can be formed。

Tong yuanlin introduced：“Tamping at 15,000 levels，For the first time, we need to measure the original ground elevation.，Driver starts ramming operation，The first several times of backfilling shall be controlled at 1/2，When we find that the settlement is small,，Gradually reduce the number of packing，Fill the pit or two-thirds for the last time，See whether the last two blows reach the hammer closing standard and the depth of the tamping pit，When these two points are reached at the same time,，It's qualified。”

It is the most complex in modern construction technology.、The most difficult project.，The engineering quality of foundation is directly related to the quality and safety of buildings.。Dynamic compaction machinery is an important construction equipment.，It is the carrier of the successful application of dynamic compaction technology.，The high efficiency and stability of the equipment is the key to ensure the progress of the whole project on schedule.。

Tang Zhuo, project manager of Guangdong Zhongheng Heavy Base Industrial Co., Ltd., said.：“Now there are 15 sets of equipment in Lot 3.，There are ten sets with 15000 energy level.，Five can only construct 8000 and below energy level.。TrinitySCC1350HDIt can be constructed to 15000~18000，The single rod reaches the 18000 energy level。SCC1500HDIt's the same thing.，The performance is very strong。”

Dynamic compaction has the advantages of low cost,、The construction period is short、The effect is good、Wide construction application range and the like.，Widely used in highway and railway，Airport、Nuclear Power Plant、A large industrial area、Foundation reinforcement works such as port reclamation。Continuous improvement of construction equipment，Continuous improvement of process ramming energy level，Safety is guaranteed from the most fundamental place.。