Tunnel central ditch, single body thereof and method for manufacturing single body

• Main Authors: PENG BIN, YUE LING, YU HERAN, LIU JIANYOU, WANG YANG, CHEN XUEFENG, XU ZHIZHONG, LYU GANG, SHI SHAN, MA FUDONG
• Format: Patent
• Language: English
• Published: 05.08.2015
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; EARTH DRILLING; FIXED CONSTRUCTIONS; LIME, MAGNESIA; METALLURGY; MINING; PERFORMING OPERATIONS; REFRACTORIES; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; SLAG; TRANSPORTING; TREATMENT OF NATURAL STONE; WORKING CEMENT, CLAY, OR STONE

The invention relates to the technical field of underground engineering, in particular to a tunnel central ditch, a single body thereof and a method for manufacturing the single body. Connecting ends are respectively arranged at two ends of the single body of the tunnel central ditch, openings are formed in the connecting ends, the single body of the tunnel central ditch is of a groove structure, and a concrete cover plate covers an upper opening of the groove structure; mixture of quartz sand, steel fibers, 425R ordinary silicate cement, micro-silicon powder, mineral waste material powder, water reducing agents and water are poured on the side walls and the bottom of the single body of the tunnel central ditch. A plurality of single bodies of the tunnel central ditch are serially connected with one another to form the tunnel central ditch, the distance between each two single bodies is shorter than 8 millimeters, and altitude difference is smaller than 5 millimeters. The method includes portioning materials; mixing the materials to obtain the mixtures; feeding the mixtures into molds and molding the mixtures in a vibration manner; carrying out primary curing on the mixtures; carrying out final curing on the mixtures to obtain the single body of the tunnel central ditch. The tunnel central ditch, the single body and the method have the advantages that the structure of the single body of the tunnel central ditch is preliminarily manufactured outside a hole and then is mounted in a tunnel, accordingly, the construction speed can be increased, and the construction quality can be improved.