SU1384768A1 - Tunnel lining - Google Patents

Abstract

The invention relates to underground construction, in particular to the construction of transport and communication tunnels in areas with a large displacement of the soil mass caused by tectonic movements. The purpose of the invention is to increase the efficiency of the structure under the conditions of uneven mixing of the surrounding array. The blocks (B) 1 of the lining with convex radial 2 and annular ends were cut with longitudinal channels (K) 4 and additional transverse K 6. One side of K 6 has access to the inner surface of B 1, and the other to the neutral line of their radial joints. Along the axis of the tunnel, B 1 are connected by fittings that are passed through K 4 and have fittings. In radial joints B 1, armature 7, which is missed in K 6 adjacent B 1, is connected. For large movements of soil, B 1 will move together with the rock mass without disrupting its continuity due to convex mating surfaces of ends 2 and ring ends of B 1, extending the longitudinal reinforcement and the flexibility of its tensioning devices. The calculated force of the latter limits the amount of opening of the circular joints B 1. In the transverse direction B 1, follow the deformations of the rock mass without opening the joints due to the reinforcement 7. 7 Il. (L

Description

with

CX) 4:

O) 00

FIG. 2

The invention relates to underground construction, in particular to the construction of transport and communication tunnels in areas with a large displacement of the soil mass caused by tectonic movements, subsidence of land or mining.

The aim of the invention is to improve the performance of the structure in the conditions of uneven displacements of the surrounding array.

FIG. I depicts a ring lining with ring connections; in fig. 2 - the same embodiment of ring connections; in fig. 3 and 4, respectively, the interconnection of blocks in the ring in the first and second variants of communications; in fig. 5 and 6 - the ends of the blocks in the ring; in fig. 7 is a fragment with longitudinal links.

The tunnel lining is a block 1 with convex radial 2 and annular 3 ends. In blocks I, longitudinal channels 4 for reinforcement 5 and transverse channels 6 for reinforcement 7 are made. Channels 6 are curved and run along the neutral line of the junction of surfaces 2 with exit 8 to the inner surface of blocks I.

According to the second variant, the curvilinear channels 6 are inclined and have exits 9 on the inner surface of the blocks 1 near the ends opposite to the mating ends 2.

The longitudinal reinforcement 5 is provided with tensioning devices 10, for example, in the form of dynamometric springs, designed for a predetermined force.

When patient moves the surrounding soil, for example, in the zone of active tectonic movements in the under-abatable areas, the lining blocks 1 are moved together with the rock mass without disrupting its continuity due to convex interface surfaces 2 and 3, elongation of the longitudinal reinforcement 5 and compliance of the tension device 10. The magnitude of the opening of the annular joints 3 (Fig. 7) of the targets 10.

In this case, in the transverse direction, the lining blocks 1 also follow the deformations of the rock mass, without opening the joints due to contraction by their transverse reinforcement 7.

Claims (1)

Invention Formula Tunnel lining, including blocks with curvilinear surfaces of the ends, connected along the axis of the tunnel with reinforcement passed into their longitudinal channels, characterized in that, in order to improve the performance of the structure, the blocks have additional transverse channels, one the side of which has access to the inner surface of the blocks, and the other to the neutral line of their radial joints, while the blocks in the radial joints are connected by means of reinforcement, skipped The transverse channels of adjacent blocks, the ends are made convex, and the longitudinal reinforcement is equipped with tensioning devices. FIG. one gh (Reg. 3 / H cyg g -one Jljlj (riz. 14 / FIG. five Fiz. b