Earth pressure balance shield machine slag discharge water system and installation method thereof

Abstract

The invention discloses an earth pressure balance shield machine slag discharge water system and an installation method thereof. The system comprises an articulated type advanced grouting hole support, a conversion flange, a flange cover and a ball valve, the articulated type advanced grouting hole support is arranged on existing slag discharge water holes of a front shield partition, the conversion flange is connected with the articulated type advanced grouting hole support through bolts, one end of the ball valve is connected with the conversion flange, and the other end of the ball valve isconnected with a galvanized hard pipe through internal threads on the flange cover. The installation steps are that structural parts except for an articulated type advanced grouting hole support in original slag discharge water holes are removed; the conversion flange and the flange cover are manufactured and processed; the conversion flange and the articulated type advanced grouting hole supportare connected, and the articulated type advanced grouting hole support and the conversion flange are sealed; and then connection of the ball valve is carried out, the galvanized hard pipe is connected with the ball valve, and the complete slag discharge water system is formed. The invention can effectively realize the timely and effective discharge of a large amount of accumulated water which isinfiltrated in the tunneling process of a shield machine.

Description

technical field [0001] The invention relates to a shield machine based on existing advanced grouting holes to transform a slag discharge water system, which belongs to the technical field of tunnel engineering. Background technique [0002] The shield machine is a special construction machine for tunnel excavation. It is a large-scale and complex automatic tunnel construction equipment integrating machinery, electricity, hydraulic pressure, fluid, light, sensing and information technology. Its structure is relatively complicated. The traditional shield machine is not equipped with a special device for removing water seepage from the excavation surface. The infiltrated water is generally discharged out of the hole after mixing the muck with the screw conveyor. However, this drainage method is only used when the water content is not large. It is more applicable in the stratum with rich water, when encountering the stratum rich in water, the slag water cannot be removed in time...

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Problems solved by technology

The traditional shield machine is not equipped with a special device for removing water seepage from the excavation surface. The infiltrated water is generally discharged out of the hole after mixing the muck with the screw conveyor. However, this drainage method is only used when the water content is not large. It is more applicable in the stratum with rich water, when encountering the stratum rich in water, the slag water cannot be eliminated in time

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