Artificial surrounding rock construction process for treating tunnel collapse cavity

Abstract

The invention discloses an artificial surrounding rock construction process for treating a tunnel collapse cavity. The artificial surrounding rock construction process comprises system alarm, cavity reinforcement, guniting sealing, concrete injection, bar planting reinforcement, water plugging reinforcement, monitoring measurement and collapse cavity backfill. According to the artificial surrounding rock construction process for treating the tunnel collapse cavity, the safety is high, a monitoring device is arranged before collapse, an early warning can be given out when geological deformation occurs before collapse. During guniting sealing, the lower portion of a subsidence area is pre-supported by stacking supporting objects, the overall top is prevented from collapsing during guniting sealing, an annular steel supporting frame is adopted for primary supporting, reinforcing supporting pieces are arranged at the arch foot fixing positions on the two sides of the annular steel supporting frame, and after guniting sealing, the structure of the annular steel supporting frame needs to be checked, and the safety and relability of supporting are improved; and after a supporting steel pipe is driven in, cement paste is injected into the supporting steel pipe for secondary reinforcement, water plugging reinforcement is conducted after bar planting reinforcement is completed, secondary collapse caused by water seepage is prevented, construction is strictly conducted according to a reserved core soil three-step method during excavation, and the safety is further improved.

Description

technical field [0001] The invention relates to the technical field of tunnel collapse treatment, in particular to an artificial surrounding rock construction process for treating tunnel collapse. Background technique [0002] With the rapid development of the construction industry, the construction level of tunnel engineering has also made great progress. However, in the process of tunnel excavation, landslides will inevitably occur. Once a landslide disaster occurs, it will not only affect the construction progress of the tunnel, but also increase the project cost, and even cause construction personnel casualties. With the improvement of construction technology, the phenomenon of landslides has been reduced, but it still cannot be completely eliminated. The traditional tunnel collapse treatment construction method is not safe, the whole construction process is slow, and the risk is high. There are often safety hazards such as deformation of the initial support and cracks...

AI Technical Summary

Problems solved by technology

However, in the process of tunnel excavation, there will inevitably be landslides.

Once a landslide disaster occurs, it will not only affect the construction progress of the tunnel, but also increase the project cost, and even cause construction personnel casualties.

With the improvement of construction technology, the phenomenon of landslides has been reduced, but it still cannot be completely eliminated.

The traditional tunnel collapse treatment construction method is not safe, the whole construction process is slow, and the risk is high. There are often safety hazards such as deformation of the initial support and cracks in the secondary lining in the later stage, and it is very prone to secondary collapse in the later stage.

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