METHOD FOR CONSTRUCTION OF DEEP SUBWAY STATION Russian patent published in 1998 - IPC

FIELD: underground construction. SUBSTANCE: method includes driving the audits on boundaries of station tunnel with traffic tunnels, erection along axes of audits of supports in the form of column with supporting pivots and girders lain on columns, anchoring of columns with the help of reusable braces in side walls of audit, removal of braces, cyclic driving of station and traffic tunnels, and ground extraction by stopes equalling support spacing, erection of free parts of tunnel with their resting on supports, mounting the platform part of station tunnel in the form of concrete cast-in-situ plate and trough parts of lining of traffic tunnels and injection of cement mortar behind the exterior surface of tunnel lining. Distinguishing feature of the method i is in that the cast-in-situ plate is joined directly with trough parts of traffic tunnel and performed in course of driving of audits and tunnels are mounting and removal of audit temporary supports. In this case, removal of braces is effected in course of ground extraction in tunnels before their lining. EFFECT: higher efficiency. 3 dwg