LINING OF PRESSURE-FREE HYDRAULIC TUNNEL

摘要

FIELD OF THE INVENTION The invention relates to hydraulic engineering. The purpose of the invention is to increase operational reliability. The lining of the free-flow tunnel includes reinforced concrete elements in the form of closed rings 1, separated from each other by flat ring seams 2. Support rings 1 are made of variable width, decreasing from the edges of the tectonic fault to its seam. The width of the rings in the seam zone satisfies the conditional b a 1/2 1/2 h-ctgoi, where in is the width of the rings; ei is the inclination angle of the tectonic fault seam equal to 45 ° ioi 80 °; h the height of the tunnel section. Rings 1 are interconnected by steel rods. During tectonic movements of blocks 7 and 8 of the massif of hormly rocks, a fault 9 fracture 9 is formed, along which blocks 7 and 8 are displaced relative to each other. The presence in the lining of rods ensures the involvement of adjacent rings 1 in the deformation of the tunnel block, assimilating the flexible work of the lining in the longitudinal direction of the track chain. 3 il. 9. Q 9 (L