Lining support for underground mining and tunneling

Details Lining support for underground mining and tunneling Lining support for underground mining and tunneling

E - Fixed Constructions

21

D

E21D 15/51 (2006.01) E21D 15/44 (2006.01)

Patent

CA 2706605

The invention relates to a hydraulic lining support (1) of the open system for tunneling and mining, comprising an outer pipe (1b) forming the upper prop (1a) and an inner pipe (6a) forming the lower prop (6), said inner pipe being introduced in the outer pipe and at the upper end (14) thereof being provided with a plunger (4). By supplying pressurized fluid, the plunger is displaced in the upper prop in a sealing manner, wherein a valve block (8) is provided on the inside of the lower prop (6) beneath the plunger (4) in order to fill the pressure chamber (13), said valve block being connected firmly to the plunger (4) by way of a pressure pipe (7) and thereby having a constant height (H) to the base plate (12) of the lining support (1).

La présente invention concerne un étançon de soutènement hydraulique (1) du système ouvert destiné au domaine de l'exploitation minière et de la construction de tunnels, comprenant un tube extérieur (1b) qui forme un étançon supérieur (1a) et un tube intérieur (6a) qui forme un étançon inférieur (6), est introduit dans le tube extérieur et présente un piston (4) à son extrémité supérieure (14). Le piston est déplacé de façon étanche dans l'étançon supérieur par apport de liquide sous pression, un bloc soupapes (8) se trouvant à l'intérieur de l'étançon inférieur (6) en dessous du piston (4) pour assurer le remplissage de la chambre sous pression (13), le bloc soupapes étant relié fixement au piston (4) par un tube sous pression (7) et ayant de ce fait une hauteur constante (H) par rapport à la plaque d'assise (12) de l'étançon (1).

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