1 1 Hee On the morning of the 5th, the Pacific Tower located on Jiefang Avenue in Qiaokou District of Wuhan City was successfully demolished by blasting. Traffic control and other departments carry out traffic control around the site, and the blasting company carefully designs the construction scheme to ensure the blasting safety.
Pacific Tower is located at No.218 Jiefang Avenue, Qiaokou District, Wuhan. It consists of two towers with a total area of19160m2. It was built in the early 1990s. It was originally called Pacific Tower, and was later acquired by Changjiang Hotel and renamed Changjiang Tower. Adjacent to Light Rail 1 Line, Metro Line 3, Jiefang Avenue Main Line and Second Ring Road. Due to the need of urban planning, the relevant departments decided to demolish it by blasting.
165438+1October 15 at 0: 00 am, people and vehicles in the area hundreds of meters around the blasting site were evacuated, and many staff members of traffic police, fire departments and other departments were on strict alert to prevent irrelevant personnel from approaching.
Bang! Bang! Bang! ? At about 1 o'clock in the morning, several explosions sounded, and the tower on the 1 1 floor on the west side of the Pacific Building collapsed into the open space far from Jiefang Avenue. Smoke rose and spread around. Two seconds later, the blasting sounded again, and the tower on the east side of the building 16 also collapsed. It only takes 8 seconds from the beginning to the end of the blasting.
During the blasting, Zongguan subway station, light rail 1 line and elevated Second Ring Road near the site were unaffected and intact.
In the Qiaorong Jinjiang community near the scene, Mr. Yin, a resident, photographed the blasting process with a camera and posted it online. Like Mr. Yin, many netizens lamented: A childhood memory is gone! The landmark building more than 20 years ago was finally demolished, so I miss it. How many memories of Hankou people! ?
165438+1October15th morning, the Pacific Tower was in ruins, covering an area of 1000 square meters. The traffic control around has been cancelled and the traffic has returned to normal. Several excavators are cleaning up the steel bars and other sundries in the ruins, and several workers are sprinkling water to dust. The staff of a nearby parking lot said that the residents and vehicles around the blasting site were evacuated from the afternoon of 14.
From the afternoon165438+1October 13, they began to evacuate the nearby vehicles. For the owner who can't be contacted, the traffic control department will transfer the vehicle to a safe place with a trailer. Before blasting, the traffic control department also used water horses, temporary guardrails and other facilities to temporarily isolate the intersections and forks near the scene, and sent people to guard them to ensure the safety of blasting. After the successful blasting, they quickly dismantled the relevant traffic facilities and resumed the traffic around the site in time.
Demolition blasting is an interdisciplinary engineering technology, which requires in-depth understanding of explosion mechanics, material mechanics, structural mechanics, fracture mechanics and other engineering disciplines. In design and construction, the characteristics of various disciplines should be considered at the same time. As the object of demolition blasting, the geometric characteristics of buildings and the physical and mechanical properties of materials are often basically accurate, concrete, comprehensive and knowable. Therefore, compared with rock blasting, demolition blasting can realize basic accurate quantification and realize the so-called? Accurate blasting? .
A building located in the city center, such as Wuhan Pacific Tower, must be built? Accurate blasting? .