Single layer well wall with connecting plate and its constructing method

Abstract

The invention is suitable to sinking operation inside alluvium and rock formation. water tight connection plate in 'T'shaped cross section is setup at wall of a well in single layer at connection place when construction goes downwards. Connecting rod is setup between connection places. The disclosed method changes old construction mode that new and old concretes of lower and upper segments of well wall are contacted directly at place of the connection plate into mode that concrete contact with connection plate. Thus, the invention raises water seal performance at connection part of well wall greatly. Well wall in single layer can be as temporary supporting structure or as permanent supporting structure. Comparing with technique of freezing method, the invention simplifies construction technique, reduces cost greatly. Features are: simple structure, convenience of construction, good tightness, small total thickness, and wide practicability.

Description

technical field [0001] The invention relates to a single-layer shaft wall with stubble boards and a construction method thereof, and is especially suitable for drilling engineering by freezing method in alluvial layers and rock formations, and is also suitable for drilling engineering in alluvial layers and rock formations. Background technique [0002] The traditional freezing method sinking technology usually adopts double-layer composite well wall structure, and the well wall is composed of the outer wall (temporary support structure when the shaft is excavated downwards) and the inner wall (permanent support structure of the shaft). After the frozen wall is formed, first excavate downward section by section, and construct the outer wall (note: there is stubble between the new and old concrete on the outer wall of the upper and lower sections of the construction in this way, and this stubble is not waterproof); The inner wall is constructed con...

AI Technical Summary

Problems solved by technology

Moreover, the double-layer composite shaft wall structure is adopted, and the shaft excavation radius is large, which will greatly increase the thickness of the frozen wall

Therefore, the double-layer composite shaft wall structure not only greatly increases the cost of shaft excavation and masonry, but also greatly increases the cost of shaft freezing engineering. With the increase of the drilling depth of the freezing method, the double-layer composite shaft wall structure becomes more and more unreasonable.

Images