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Shotcrete machine is well known in the construction machinery industry in the application of very broad, it appears a lot of people to make a contribution, and now the spraying machines are high-tech, intelligent technology, it can not be done manually can be completed work. Shotcrete machine province is a new and efficient spraying machinery, so it’s working place is relatively broad, such as mines, tunnels, culverts, subway, hydropower engineering, underground engineering and coal mine tunnel shotcrete high marsh construction operations. In particular, special attention to the work in the pit slope time before work to check the slope first geological conditions, today small and everyone explain geological conditions Depending on the slope of geological spraying machine pit slope is the case may be, the general 1: 0.5-1: 1, a substrate dug to close to the design elevation, reservations 0.3m thick layer, pending before the concrete is poured by hand Excavation to design elevation, rapid test, then the basis for the construction. If that is to be provided between the base through the top, pit top and sidewalk must be 1m wide berm, but also set up drainage ditches in the top surface to prevent surface water flowing into the pit excavation construction process. When grading the excavation of the first to release before digging Excavation Sidelines calculated plane point, all work to be ready, you can start digging, excavation when such use mechanical excavation save manpower and material resources. Moreover, excavation grading excavation area leaving about 80cm on each side of the face, in the steel sheet pile retaining excavation and protection, you can dig down along the steel sheet pile, according to the site after the excavation is completed surrounded by water seepage in the basement Set drains and sumps, after excavation pit for dangerous rock around the treated nets were hanging anchor spray treatment if necessary.
