Inflatable smoke exhaust and dust removal isolating hood for tunnel shaft construction

Abstract

The invention relates to an inflatable smoke exhaust and dust removal isolating hood for tunnel shaft construction, aiming at solving the problems that the dust removing effect is poor, the energy consumption is great and the health of construction personnel is jeopardized during treatment of dust produced when a drilling and blasting method is adopted for excavation of the tunnel shaft at present. The inflatable smoke exhaust and dust removal isolating hood for tunnel shaft construction comprises an exhaust fan. An exhaust hose which stretches out of a shaft mouth and is fixedly arranged at the shaft mouth is sheathed at the upper part of the exhaust fan. An umbrella-shaped flexible isolating layer which is fixedly arranged at the lower part of the exhaust fan is sheathed at the lower part of the exhaust fan. A plurality of steel frameworks which are radially arranged are fixedly arranged on the umbrella-shaped flexible isolating layer. The lower end of the umbrella-shaped flexible isolating layer is connected with an annular flexible inflatable sleeve. A blower which is communicated with the annular flexible inflatable sleeve is fixedly arranged on the side wall of the exhaust fan. An air compensation pipe is fixedly arranged on the side wall of the exhaust fan, wherein the lower part of the air compensation pipe is arranged in the umbrella-shaped flexible isolating layer and the lower end of the air compensation pipe is closed. A one-way valve is arranged on the side wall of the lower part of the air compensation pipe. The inflatable smoke exhaust and dust removal isolating hood for tunnel shaft construction has the advantages of simple structure, convenience in operation and low cost.

Description

technical field [0001] The invention relates to a tunnel shaft dust removal device, in particular to an inflatable smoke exhaust and dust removal isolation cover for tunnel shaft construction. Background technique [0002] With the accelerated pace of infrastructure construction, there are more and more long tunnel projects. In order to eliminate harmful gases in long tunnels after operation and to deal with sudden accidents such as tunnel fires, ventilation shafts are often set in the middle of the tunnel, and the chimney effect of the shaft is often used. It is supplemented by ventilation equipment to improve the air quality in the long tunnel. [0003] The depth of the ventilation shaft has grown from tens of meters to hundreds of meters. Restricted by many factors, the vertical excavation method of drilling and blasting is still used so far. After the blasting, a large amount of harmful gas and dust are produced in the well, which must be removed by means of ventilation....

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of poor dust removal effect, high energy consumption and threat to the health of construction workers when the existing tunnel shaft is excavated by drilling and blasting method, the present invention provides an inflatable smoke exhaust and dust removal isolation cover for tunnel shaft construction

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