Steel plate and steel reinforced concrete well wall

Abstract

The invention discloses a steel plate and steel reinforced concrete well wall, which is mostly suitable for deep vertical shafts for bearing high ground pressure and high water pressure. A steel plate cylinder, an annular steel rib, inside vertical steel ribs, outside vertical steel ribs and radial connecting pieces are arranged and concrete is poured to form a cylindrical well wall. The steel plate cylinder and the annular steel rib are respectively positioned on the inner surface of the well wall and in the well wall, and are respectively fixed to the inside and outside vertical steel ribs; the steel plate cylinder and the annular steel rib are connected through the radial connecting pieces to form a spatial structure; and concrete is poured into an annular space formed by the steel plate cylinder and a well wall template or surrounding rock to coat the annular steel rib, the inside and outside vertical steel ribs and the like, and the cylindrical well wall structure is formed. The steel ratio on the inner side of the well wall is high, the concrete between the steel plate cylinder and the annular steel rib is positioned in a three-directional stress state, the compressive strength can be obviously improved, a core bearing area is formed, and the ultimate bearing capacity of the well wall is greatly improved. The steel plate and steel reinforced concrete well wall is used for building deep vertical shafts, the thickness of the well wall can be greatly reduced and the cost is reduced; and the steel plate and steel reinforced concrete well wall is reasonable in structure and easy and convenient to construct and has wide applicability.

Description

1. Technical field [0001] The invention relates to steel plate steel reinforced concrete well walls, especially suitable for deep shaft shafts in deep alluvium and water-rich rock formations in mine construction, such as shafts of common sinking, freezing, drilling and caisson methods. 2. Background technology [0002] With the development of deep mineral resources in my country, the depth of wellbore construction continues to increase, and the bearing capacity of the shaft wall has to be greatly increased to withstand the increasing deep ground pressure. For this reason, there are only two approaches: one is to improve the material strength and thickness of the well wall without changing the structure of the well wall; the other is to change the well wall structure. At present, the commonly used reinforced concrete wall structure is difficult to meet the needs of deep mine construction, while the cast iron or cast steel shaft walls, Chubin block shaft walls, and concrete ar...

AI Technical Summary

Problems solved by technology

However, the most unfavorable part of the well wall is the inner area. This type of well wall uses double-layer steel plates to implement overall radial restraint on the well wall. limited; on the other hand, the increase in the strength of the external concrete does not contribute significantly to the horizontal bearing capacity of the shaft wall

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