摘要:
A method and a structural element for the construction of a directionally flexible and watertight tunnel lining (1) or tunnel course (1), the method using pre-fabricated elements of concrete or sandwich structure (3, 4, 5; 73;73'). Interspace between such elements and extending transversely of the direction of the tunnel course or tunnel lining receives an interspace cast (14) using an outer flexible formwork (2) in the form of skirts (2', 2'') attached to the outside of the elements (3, 4, 5; 73, 73'), and which through interconnection (11) thereof form a flexible, "bag-like" formwork (2) on the outside of the elements (3, 4, 5;73, 73'). Together with conventional formwork (12) on the inside of the elements (3, 4, 5;73, 73') there is formed a defined cavity (13) which can be filled with injectable mass of concrete. After the concrete has hardened it will provide support to the installed elements (3,4, 5; 73, 73') as well as providing support relative to exposed surface portion of rock surface (10). The elements (3, 4, 5; 73, 73') can be provided on the outside with a membrane (17). Further, the elements can be provided with injection paths (16) in order to at any time establish a completely watertight tunnel lining (1).
摘要:
In developing an underground mine a mine shaft 80 is formed by excavating earth and removing excavated material from the shaft 80 by a material transport system comprising skips 36 movable up and down on skip guides within the shaft. Tunnels 82 are launched from a bottom part of shaft 80 by excavating a cavern 81 in which a tunnel boring machine is assembled and operated to bore the tunnels 82. Material from the tunnel excavation is transported from the tunnels via conveyor 87 to the material transport system established within the shaft during formation of the shaft which is operated to transport that material to an earth surface region.
摘要:
A three dimensional multi-phase tunneling method and equipments thereof, make it possible that a drilling and blasting process can be carried out simultaneously during excavating a pilot tunnel by means of tunnel boring machine (TBM), thereby is capable of reducing the period and the cost of excavation. The three dimensional multi-phase tunneling method includes the steps of drilling an oblique charge hole on an upper half section in a pilot tunnel being excavated by a tunnel boring machine (TBM) and drilling an outermost charge hole to a predetermined length in a tunneling direction (longitudinal direction) at an outermost tunneling section during excavating the pilot tunnel, and charging and blasting the upper half section, wherein the oblique charge hole is turned at a predetermined angle from a transverse direction to a longitudinal direction, and charging and blasting the lower half section except the central portion apart by a predetermined distance from the tunnel face after drilling a longitudinal hole.
摘要:
The present invention relates to a tunneling method and, particularly to installing an internal or external pre-support member, a post support member and an apparatus therefor. The tunneling method includes: excavating a pilot tunnel in a main tunnel to be built; radially forming a drilled hole from an excavation surface of the pilot tunnel to a tip end of an internal pre-support member of the main tunnel at locations in the pilot tunnel; inserting the internal pre-support member into the drilled hole, and conducting grouting and fixing the internal pre-support member; excavating the tunnel along an excavation line of the main tunnel and spraying shotcrete to an excavation surface of the main tunnel; installing a post-support member between internal pre-support members in the excavation surface of the main tunnel; and connecting the internal pre-support member and the post-support member with a plate type support member.
摘要:
The procedure for the construction of underground transport infrastructures, comprises the steps of: excavating an underground transport tunnel (1, 2) comprising a first pipe (1) and a second pipe (2) substantially parallel to one another; making a bypass tunnel (4) connecting the first pipe (1) and the second pipe (2) which comprises the sub-steps of: - introducing a launching chamber (5) along the first pipe (1) up to a first predefined position (PI) chosen along the longitudinal direction (Dl) of the first pipe (1), the launching chamber (5) being able to launch a tunnel boring machine (6); introducing an arrival chamber (7) along the second pipe (2) up to a second predefined position chosen along the longitudinal direction (D2) of the second pipe (2), the arrival chamber (7) being able to receive the tunnel boring machine (6); excavating the bypass tunnel (4) making the tunnel boring machine (6) move forward from the launching chamber (5) to the arrival chamber (7) along a direction transversal (T) to the first pipe (1) and to the second pipe (2).
摘要:
A stable liquid composition of a swollen superabsorbent polymer for ground excavation includes water and superabsorbent polymer particles swollen by water absorption, and the specific gravity of the stable liquid composition of a swollen superabsorbent polymer for ground excavation is equal to or less than 1.20. Accordingly, it is possible to provide a stable liquid composition of a swollen superabsorbent polymer for ground excavation and a construction method using the swollen superabsorbent polymer stable liquid composition which can form a stable aquiclude even in a gravel ground having a large water permeability coefficient prevent a decrease in replaceability with concrete and in adhesiveness of concrete to a reinforcing bar, and reduce an amount of waste soil.
摘要:
A three dimensional multi-phase tunneling method and equipments thereof, make it possible that a drilling and blasting process can be carried out simultaneously during excavating a pilot tunnel by means of tunnel boring machine (TBM), thereby is capable of reducing the period and the cost of excavation. The three dimensional multi-phase tunneling method includes the steps of drilling an oblique charge hole on an upper half section in a pilot tunnel being excavated by a tunnel boring machine (TBM) and drilling an outermost charge hole to a predetermined length in a tunneling direction (longitudinal direction) at an outermost tunneling section during excavating the pilot tunnel, and charging and blasting the upper half section, wherein the oblique charge hole is turned at a predetermined angle from a transverse direction to a longitudinal direction, and charging and blasting the lower half section except the central portion apart by a predetermined distance from the tunnel face after drilling a longitudinal hole.