What is the difference between the Neo method and the traditional mine method?

Neo-method is suitable for areas with strong surrounding rock, while shallow underground excavation method can be applied to the weak surrounding rock in the stratum but under shallow excavation conditions.

1, the new Austrian method is to make full use of the self-supporting capacity of the surrounding rock and the spatial constraints of the excavation surface, the use of anchors and shotcrete as the main means of support, reinforcement of the surrounding rock, constraints on the relaxation and deformation of the surrounding rock, and through the measurement of the surrounding rock and support, monitoring, and guiding the design and construction of the underground project.

2, the principle is: the use of soil layer in the excavation process of a short period of self-stabilizing ability, take appropriate support measures, so that the surface of the surrounding rock or soil layer to form a close-type thin-walled support structure of the construction method without trenching, is mainly applicable to the cohesion of soil layer, sand, sand and pebble layer and other geology. Due to the shallow buried concealed excavation method eliminates a lot of procedures such as reporting, demolition and relocation, digging road, etc., and is now generally adopted by the construction unit.

3, fully protect the surrounding rock, reduce the disturbance of the surrounding rock, give full play to the self-supporting capacity of the surrounding rock, as soon as possible to make the support structure closed, strengthen the monitoring, according to the monitoring data to guide the construction. Can be briefly summarized as "less disturbance, early anchor spraying, fast closure, diligent measurement". Support-enclosed rock *** with the principle of action.