c. allowing the compressible grout mix to set, wherein the compressible grout mix in the hardened state has a compressible ratio greater than the anticipated time dependent deformation.
The present invention provides for a compressible grout mix for filling an annular gap between a tunnel rock wall surface and a tunnel liner of a tunnel in a rock formation subject to time dependent deformation after excavation and a method of filling the annular gap between a tunnel rock wall surface and a tunnel liner of a tunnel in a rock formation subject to time dependent deformation after excavation utilizing the compressible grout mix for resilient absorption of forces in the hardened state of the compressible grout mix exerted by the time dependent deformation of the rock wall surface into the tunnel opening. The method includes:
a. providing the compressible grout mix comprising hydraulic binding agent, bentonite clay, polymer foam particles, water-reducing admixture, water and air,
b. placing the compressible grout mix in the annular gap between the tunnel wall rock surface and the tunnel liner, and
c. allowing the compressible grout mix to set, wherein the compressible grout mix in the hardened state has a compressible ratio greater than the anticipated time dependent deformation.
c. allowing the compressible grout mix to set, wherein the compressible grout mix in the hardened state has a compressible ratio greater than the anticipated time dependent deformation.
E21D 11/00 - Revêtement de tunnels, galeries ou autres cavités souterraines, p. ex. de vastes chambres souterrainesRevêtements à cet effetLeur exécution sur place, p. ex. par assemblage
C04B 24/26 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
The present invention is directed to a steel segment assembly for lining a tunnel. The segment assembly has a frame to which is attached a steel panel, the frame and panel being a segment of a cylinder dimensioned to the desired tunnel diameter. The frame is preferably square, rectangular or trapezoidal in shape and is constructed of suitably dimensioned members having a square or rectangular cross section welded together. The frame has two curved spaced apart side members to form the long sides of the frame, the curved spaced apart side members being joined together at either end by end members to form the short sides of the frame. At least one intermediate member is provided between the two end members to bridge the two curved spaced apart side members to provide transverse structural support to the steel segment assembly.
The present invention relates to a compressible grout mix for use as a fill in applications requiring absorption ofcompressive or deformation stresses between subterranean formations and subterranean structures as well as a method of filling a gap between subterranean formations and subterranean structures in a subterranean formation subject to compressive or deformation stresses utilizing the compressible grout mix for resilient absorption of forces in the hardened state of the compressible grout mix exerted by the time dependent deformation of the rock wall surface into the tunnel opening. The compressible grout mix contains hydraulic binding agent, polymer foam particles, anti-wash agent, and water and the method includes:a. providing the compressible grout mix containing hydraulic binding agent, polymer foam particles, anti-wash agent, and water,b. placing the compressible grout mix in the gap between the subterranean formation and the subterranean structure, andc. allowing the compressible grout mix to set, wherein the compressible grout mix in the hardened state has a compressible ratio greater than the anticipated compressive and deformation stresses of the subterranean formation.
E21D 5/00 - Revêtement des puitsRevêtements à cet effet
E21D 11/00 - Revêtement de tunnels, galeries ou autres cavités souterraines, p. ex. de vastes chambres souterrainesRevêtements à cet effetLeur exécution sur place, p. ex. par assemblage
6.
ANNULAR FILL COMPRESSIBLE GROUT MIX FOR USE BEHIND PRE-CAST CONCRETE SEGMENT INSTALLED IN TIME DEPENDENT DEFORMATION TUNNELS
The present invention provides for a compressible grout mix for filling an annular gap between a tunnel rock wall surface and a tunnel liner of a tunnel in a rock formation subject to time dependent deformation after excavation and a method of filling the annular gap between a tunnel rock wall surface and a tunnel liner of a tunnel in a rock formation subject to time dependent deformation after excavation utilizing the compressible grout mix for resilient absorption of forces in the hardened state of the compressible grout mix exerted by the time dependent deformation of the rock wall surface into the tunnel opening. The method includes: a. providing the compressible grout mix comprising hydraulic binding agent, bentonite clay, polymer foam particles, water- reducing admixture, water and air, b. placing the compressible grout mix in the annular gap between the tunnel wall rock surface and the tunnel liner, and c. allowing the compressible grout mix to set, wherein the compressible grout mix in the hardened state has a compressible ratio greater than the anticipated time dependent deformation.
E21D 11/00 - Revêtement de tunnels, galeries ou autres cavités souterraines, p. ex. de vastes chambres souterrainesRevêtements à cet effetLeur exécution sur place, p. ex. par assemblage
E21D 11/10 - Revêtement avec des matériaux de construction avec du béton coulé en placeCoffrage ou autre équipement adapté à cet effet
7.
COMPRESSIBLE GROUT MIX FOR USE IN ABSORBING COMPRESSIVE OR DEFORMATION STRESSES OF SUBTERRANEAN FORMATIONS
The present invention provides for a compressible grout mix for filling an annular gap between a tunnel rock wall surface and a tunnel liner of a tunnel in a rock formation subject to time dependent deformation after excavation and a method of filling the annular gap between a tunnel rock wall surface and a tunnel liner of a tunnel in a rock formation subject to time dependent deformation after excavation utilizing the compressible grout mix for resilient absorption of forces in the hardened state of the compressible grout mix exerted by the time dependent deformation of the rock wall surface into the tunnel opening. The method includes: a. providing the compressible grout mix comprising hydraulic binding agent, bentonite clay, polymer foam particles, water-reducing admixture, water and air, b. placing the compressible grout mix in the annular gap between the tunnel wall rock surface and the tunnel liner, and c. allowing the compressible grout mix to set, wherein the compressible grout mix in the hardened state has a compressible ratio greater than the anticipated time dependent deformation.
The present invention is directed to a clip connector for joining steel ribs together end to end to provide a support for lateral wood or steel beams used to line a tunnel. The clip connector has a generally C shaped cross section with a web section having a width approximately equal to the width of the flange of the steel rib and a length and shape sufficient to overlap the ends of the joined steel ribs. The clip has flanges extending from either side of the web to wrap around the flange of steel ribs and contain the flange of the steel rib.
E21D 11/22 - Mâchoires ou autres moyens flexibles pour relier des éléments de cintre voisins, soit de façon rigide, soit de façon à permettre un glissement de parties de l'élément de cintre en cas de pression excessive