Tianshan Shengli Tunnel imports crossing the largest fault on the entire line

Tianshan News (Reporter Lu Zejian reported by Reporter 暴 暴 天) On the afternoon of September 5th, with the completion of the two -lining concrete pouring at the right hole K77+891, the G0711 Line Urumqi to Weili Expressway Tianshan Shengli Tunnel Importer left, middle and right three holes all all three and right three holes The biggest fault -F6 fracture zone is successfully traveled, and the project construction is accelerated.

The builder was constructed on the right hole of the Tianshan Shengli Tunnel. Photo by Liu Xinpeng

The total length of the Tianshan Shengli Tunnel is 22.1 kilometers. It is the control project of the Wuwei Highway. It is divided into three holes of the left, middle, and right at the same time. The tunnel construction must pass through 16 broken bands. Among the many broken belts, it is named F6 Borkoku -Arckkuku's broken zone.

The Boya Fracture Belt is a long -term activity that is a deep broken area characterized by different depth, different deformation behaviors, and different movement directions. The total width of the tunnel range is about 400 meters, and the core section is 100 meters long. The geological structure of the broken belt is complex, the rock body is broken, and the water is rich in water. It includes more than 10 rocks such as glittering long rocks and carbon rocks. It is called the "Geological Museum" by geological experts.

"During the construction of the guide hole last year, we overcome difficulties such as landslides and Yongshui. It took 78 days to successfully cross the largest fault on the entire line. Since then, the left and right main holes have been constructed in the scope of the broken band. Wang Heqi, manager of the fifth standard section of the civil construction.

The geology of the Boya broken belt is complicated. The construction team uses a C6 rig to conduct advanced objects. Based on the exploration results, the degree of crushing and moisture content of the surrounding rock is analyzed, and the scientific and reasonable construction plan is formulated. During construction, the domestic advanced computer three -arm rock -cutting machine was used to explode, which effectively reduced construction safety risks and improved operating efficiency.

The geological conditions in the Tianshan Shengli Tunnel are complicated, and the basic intensity of the earthquake is a tadpole. The construction party has set up a foam concrete shockproof layer in the F6 fault area to ensure the safety of the project.

Bubble concrete is also known as lightweight concrete. It is made of cement, water, and foaming agents in accordance with a certain proportion. It has the advantages of light weight and good thermal insulation performance.

"We set the foam concrete shockproof layer between the two -way concrete and the fence, which can effectively slow down the pressure and impact of the F6 fault collapse and crushing rocks on the two lined concrete." Wang Heqi said.

When crossing the Boya broken belt, there are more water pouring water. When excavated to the core area of ​​the fault, the water volume is 8000-10,000 cubic meters. In order to prevent the flowing water from flowing into the Urumqi River, the construction party introduced the water to the sewage treatment plant through the drain pipe. At the same time, do a good job of tunnel support to reduce the impact of water flow on construction.

"After struggling, the left and right main holes successively passed the largest faults across the board. The tunnel excavation captured the largest 'blocking of the" block tiger' and paved the road for the later construction. At present, the three caves on the import end have been excavated more than 6 kilometers. We will continue to step up construction and strive to strive The project was completed as soon as possible. "Wang Heqi said.

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