Seal and its production method for the creation of load bearings

Details Seal and its production method for the creation of load bearings Seal and its production method for the creation of load bearings

1992-06-25

1998-03-03

Ricci, John A.

Hydraulic and earth engineering

Earth treatment or control

Chemical

405 36, 405138, 405270, E21D 900

Patent

active

057228000

ABSTRACT:
A bulkhead for manufacturing underground structures such as earth cavities in a closed construction method, formed of sealing walls arranged as an enclosure and sealing earth masses to be removed against ground water, wherein the sealing walls are formed of a hardened mixture of bentonite-cement injected under pressure into the ground, characterized in that the sealing walls inserted into fine sand or silts are arranged in the form of a roof and are formed as a substantially elastically deformable bulkhead envelope by adding filler to the mixture of bentonite-cement. Preferably, the bulkhead sealing walls of the bulkhead envelope extend from a central ridge line on the earth surface or below it downwardly in an obliquely diverging direction into water-impermeable soil. The bulkhead can be made airtight so that a vacuum can be applied to the earth mass enclosed by the bulkhead envelope.

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