The Li Jiawan Tunnel Road Project is located in Binjiang New Town, Jiangjin District, Chongqing Municipality. It starts at Songlin Road and extends north to the planned Level 10 Road level crossing, with a total length of 505 meters. The tunnel has two bores, each with three lanes, totaling 265 meters in length and 36 meters in width, making it a major urban thoroughfare. Once completed, it will better improve the urban construction and transportation infrastructure of Jiangjin District, greatly facilitating the travel of surrounding residents, effectively alleviating the transportation difficulties for residents, and significantly improving the quality of life for surrounding people.
The LanHi Multifunctional Tunneling Machine is a specialized equipment used for tunnel excavation. It primarily uses high-frequency hammers or breakers to break rocks, or utilizes bucket teeth or rod wedges to crush rocks, while also leveraging the gravity below the surrounding rock to automatically break rocks. This machine can be operated through local control or wireless remote control and is suitable for excavating tunnels with diameters ranging from 6 to 9.5 meters. It integrates functions such as high-frequency rock breaking, rapid excavation in soft soil, profile trimming, and spray dust removal, suitable for construction in areas where blasting is restricted, such as airports, residential areas, and wildlife reserves. This machine exhibits strong adaptability, capable of meeting various rock construction requirements while also minimizing issues such as over-excavation, under-excavation, and collapse.
In August 2023, the excavation of the Li Jiawan Tunnel began. In October 2023, the project continued tunneling work, with the investment completion rate exceeding 91%. By March 25, 2024, both bores of the Li Jiawan Tunnel project were successfully connected.
Since the start of the project, the engineering department has organized and arranged meticulously, overcoming adverse factors such as the flood season, high temperatures, narrow sites, and discontinuous construction periods. While ensuring safety and quality, efforts were made to ensure the rapid progress of the construction, successfully achieving the milestone objectives of this phase.