In the field of air traffic，Wirtgen Group's products and technologies have been successfully applied in many airport construction and expansion projects around the world for many years.，Last time, Xiaowei gave you a brief introduction to the diversified technical solutions of Wittgen Group in airport applications.（Click to learn more），Among them, the asphalt concrete pavement construction for the airfield area of the airport reconstruction and expansion，For construction quality、High requirements for efficiency and reliability，And this is Wittgen.、Vogler and Hummer Complete Equipment Professional Domination Area。In the near future，Wittgen Group Equipment Corps is assembled at the construction site of Sanyi Airport Flight Area in Lijiang, Yunnan.，Strength Helps the Construction of the Third Phase Reconstruction and Expansion of the Airport without Suspension of Flight。

The construction site is a busy construction scene.，Trucks shuttled back and forth，The vehicle lights are flashing，More than 30 sets of milling, spreading and pressing equipment of Wittgen Group，Grasp the construction period，Ensure efficiency，Quality assurance。At present，Covering Works of Lijiang Sanyi Airport Reconstruction and Expansion Project，It has reached the acceptance standard and passed the one-time acceptance.。

As a key project in Yunnan Province，The total construction area of the project is 300000 square meters.，After the completion of the project，Sanyi Airport will usher in a comprehensive expansion，The runway will be extended from the current 3000 meters to 3500 meters.，Airfield index from 4D Upgrade to 4E ，Able to protect Boeing 747、Take-off and landing of medium and long-range wide-body aircraft such as Airbus 330 series，The designed annual passenger throughput is as high as 11 million passengers.。

Faced with such an important and huge project.，The construction team of the project faced great challenges.。The main construction contents of the covering project include the runway、Parallel taxiway、Liaison Road、The apron area and the service lane, etc.，Yes, thickness、Flatness、Compactness and other indicators are strictly required.。

At the same time，The construction area is located in the airfield area of the airport.，It is a non-stop construction project.，Time is tight，The task is heavy，How to ensure the safety of airport operation?，And guarantee the progress of the project?？Carefully planned and strictly managed，The project team decided to adopt a phased approach.，All construction was carried out after the night suspension.，To ensure that the resumption of sea trials is not affected.。

In this race against time,，Wirtgen Group equipment for its excellent performance and efficient construction capacity，It has become the construction tool of the project team.。It is reported that，More than 30 sets of Wittgen equipment have participated in the construction of the runway cover of Sanyi Airport in Lijiang.。

Accurate milling lays a good foundation for flatness

On the status quo runway、Connecting road and parallel taxiway、The pavement of the apron is under construction，The first step is to mill the original surface.，Remove the original damaged portion of the old facing，It lays a good foundation for the subsequent paving and compaction steps.。Five Wittgen large milling machines are responsible for this link.。To ensure that the airport is not suspended.，The daily construction window is very limited.，Wittgen W 2100 and W 205i With consistent high reliability and excellent performance，Precision milling and planing，Efficient promotion，The schedule of subsequent paving and compaction operation steps is guaranteed in the limited construction window period.。

   WittgenW 205i It is under construction in the third phase reconstruction and expansion project of Lijiang Airport.

Eight machines side by side“Heat on heat”Spread in full width

In the whole construction process，Paver is the main factor to determine the quality and construction progress of the new surface of the cover construction.。Up to 60 meters wide、Up to 3000 meters long+Extension 374.On a 2-meter track.，Vogler's classic large paverSuper 2100-3L Super 2180, the new model of China IV Li、And the Universal Super 1880 L A total of 8 setsThe equipment is arranged in turn.，Full section coverage is achieved from the paving width.。And the paving quality，Vogler, different models，Both the new and old models of the general series and the high-grade series have shown a consistent high standard.，The construction is in step，There is no difference in the effect。Multi-machine parallel laying“Heat on heat”Paving process，Continuity is laid over the full face width，Seamless finish。

  Eight Vogler pavers cover 60 meters of runway width

Follow closely and compact efficiently step by step

It is worth noting that，Runway、Parallel taxiway、Liaison Road、Different areas such as apron area and service lane，Press E Class standardDesign，Different combinations of asphalt concrete structural layers are adopted。18 Hummer tandem rollerFollowed by the Vogler paver，Efficient and stable compaction of newly laid pavement，Ensure the compactness and flatness of the pavement。

This cover project involves a variety of asphalt concrete structural layer combinations.，The material used is conventional asphalt concrete，There are also more stringent requirements for the temperature range of paving and compaction. SBS Modified asphalt material，To meet different functional requirements.，The total paving volume of asphalt concrete exceeds 10 Wanm³。Behind these data is the efficient collaboration of Wittgen Group's equipment.、Embodiment of stable and accurate construction capability。

At the construction site，The technical parameters of the equipment are precisely controlled by the project team members.，Surface flatness of paving layer、Compactness and other indicators are comprehensively tested.。