Take all measures to ensure construction quality

In construction , the construction unit to take all measures to ensure construction quality . By the construction of the tunnel Springs control projects across the board planetary concrete mixer, due to the import of venue is limited, do not have the hole conditions can only choose from the outlet end of the hole. The outlet end of the hole dug small concrete batching plant under the roadbed need right close to the children head hydropower diversion canal lock , canal excavation cutting edge from less than 3 meters twin shaft concrete mixer, eight meters above the canal water surface elevation of the roadbed design , there are serious safety risks. Project Department through rigorous and reliable construction organization specialized technical solutions , and strictly follow the ” sub- stratified excavation , sub- hopping protection,” construction principles , construction effectively solve this problem, ensure the security hole. Just one problem solved, another problem quickly followed , and electric concrete pump of construction workers leaving the headache . Tunnel construction needs across 74 meters of shallow gravel soil accumulation body segment blocks , the maximum depth of 25.2 m segment , the minimum depth of 2.4 meters , stacked structure is loose, unconsolidated force , overall poor bias is serious, long 22 hole design shed 38 meters pipe , tube and top tube into the hole shed jobs extremely difficult using conventional drilling rigs concrete batch plant layout, pipe roof construction quality and progress can not meet the requirements.