Water blocking device

Abstract

The invention discloses a water blocking device, which comprises a pulp inlet pipe, on which a water inrush prevention device is arranged, the water inrush prevention device is mounted on the pulp inlet pipe through a clamp, and one end of the pulp inlet pipe is connected with a pulp inlet , the grout inlet pipe is sleeved in the grout inlet and fixed by bolts, the grout inlet is connected to the orifice pipe, the orifice pipe passes through the grouting tee and is socketed with the hollow cylinder, and is fixed by bolts, the hollow cylinder There are locking mechanism, drainage hole, pressure relief valve and slurry stop wall respectively on the top, the locking mechanism and pressure relief valve are respectively installed on the hollow cylinder, and the drainage hole is set on the lower surface of the hollow cylinder and communicated with the hollow cylinder . The water blocking device can be drilled and injected repeatedly, the pressure can be adjusted, the grout spreads more evenly, the grouting effect is good, manpower can be effectively reduced, the work intensity is small, the work efficiency is high, and the safety of excavation can be guaranteed.

Description

technical field [0001] The invention relates to a civil construction facility, in particular to a water blocking device. Background technique [0002] In the engineering construction of water conservancy, hydropower, construction, transportation and other industries, it is one of the main methods of engineering geophysical exploration to conduct drilling acoustic wave testing on the surrounding rock quality of construction branch tunnels and large underground caverns. Acoustic drilling methods are used to understand the integrity of the surrounding rock of the cavern group, determine the thickness affected by the relaxation of the cave wall during the excavation process, and evaluate the effect of the consolidation grouting treatment. How to ensure that there is water medium coupling in the borehole with the opening downward, the traditional method generally adopts the hole cotton yarn plugging method and the dry hole probe test method, etc. If the wall collapses or the gro...

AI Technical Summary

Problems solved by technology

How to ensure that there is water medium coupling in the borehole with the opening downward, the traditional method generally adopts the hole cotton yarn plugging method and the dry hole probe test method, etc. If the wall collapses or the grout hole on the grouting pipe is blocked by sand, it is difficult to carry out sampling test, and the ideal grouting effect cannot be achieved, thus affecting the construction period

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