Let and press and early warning u type concrete steel pipe support

• Main Authors: LI PENG, LYU RONGSHAN, ZHOU YUAN, YU QIANQIAN, TIAN MAOLIN, KONG YINGCHUN
• Format: Patent
• Language: English
• Published: 28.10.2015
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

The patent of the utility model relates to a let and press and early warning u type concrete steel pipe support. This supporting construction mainly includes the base structure of upper portion u type carbon fiber concrete steel pipe and lower part. Wherein the carbon fiber concrete steel pipe on upper portion mainly is the u shaped steel pipe that fills the carbon fiber concrete, the base portion of lower part comprises with the cushion cap of the power of biography the buffering platform that rubber granule concrete was made. This structure mainly is that the concrete steel pipe on upper portion passes through the cushion cap and is connected with the shock mount of lower part, then utilizes the dado to guarantee two parts and connect. Utilize the big characteristic of rubber granule concrete resilience volume to slow down because the inside rock burst of unexpected coming pressure of country rock and timely release country rock prevents to crush by pressure the steel pipe on upper portion, have certain cushioning effect to the secondary coming pressure in the tunnel of unstability. Utilize the deflection of observation tunnel country rock that the scale on its compressible characteristic and steel pipe lower part surface can be macroscopical simultaneously, play fine early warning function. This supporting construction atress is reasonable, and the system of hard and soft combination has the effect of maximizing favourable factors and minimizing unfavourable ones to the stability of maintaining the tunnel, at the deflection of maintaining observation play tunnel that can be in time convenient under the stable condition in tunnel. It worth and economic benefits to have good engineering application. The roadway support who is particularly useful for big buried depth and heavily stressed colliery.