A grout mixing device in ground grouting borehole and its application method

Abstract

The invention discloses a grout mixing device in a ground grouting borehole and a use method thereof, comprising: a mandrel, a sheath and a slurry collector; the mandrel is arranged inside the sheath, and both ends of the mandrel pass through the sheath sleeve; the bottom end of the mandrel is fixed on the sheath, and the upper end is connected to the drill pipe through a short tube; the upper end of the sheath is connected to the slurry collector; right-handed blades and left-handed blades are alternately arranged on the mandrel, The starting positions of the right-handed blades and left-handed blades are both in the middle of their superior blades; the beneficial effects of the present invention: the principle of the present invention substantially achieves the triple purpose of jet mixing, swirl mixing, and split mixing, so that the two The seed slurry is more fully mixed, the chemical reaction is more thorough, and the grouting effect is more obvious.

Description

Technical field: [0001] The invention relates to a slurry mixing device in a surface grouting borehole and a using method thereof. The utility model belongs to the field of mine, tunnel and other underground engineering, and utilizes ground drilling to grout the surrounding rock of deep underground engineering to stop water and reinforce the field. technical background: [0002] During the construction of mines, tunnels and underground projects, it is inevitable to encounter unfavorable geological bodies. Unfavorable geological bodies mainly include faults, collapse columns, karst and other geological structures and soft and broken surrounding rocks. The existence of these abnormal geological conditions provides a good space for the storage and movement of groundwater. Once these spaces are communicated in the construction of underground projects, water inrush will occur, and even natural disasters such as catastrophic water seepage, surrounding rock collapse, or water and ...

AI Technical Summary

Problems solved by technology

However, because the cement-sodium silicate grout mixing and pouring technology in the borehole has not been solved, a simple orifice mixing process is adopted. In deep hole grouting, the grout after mixing is too late due to the long distance of grout delivery. When entering the injected formation, the initial setting time is reached, and the grout solidifies in the borehole, resulting in a grouting accident that blocks the borehole; some even use the in-hole mixing process, but because the design of the mixing device is unscientific and unreasonable, resulting in two kinds of grout Insufficient mixing, it is difficult to achieve complete reaction after mixing the two kinds of grout, which not only affects the reaction quality of the grout, affects the grouting effect, but also causes a lot of waste of grout

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