A rotary jet splitting grouting device
A grouting device and rotary jetting technology, which is applied in wellbore/well components, construction, sealing/isolation, etc., can solve the problems of general improvement of soil properties, poor splitting effect, and difficulty in forming slurry veins, etc. Achieve the effect of good splitting effect, excellent effect and simple structure
Active Publication Date: 2021-06-08
LANZHOU UNIVERSITY
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Problems solved by technology
[0003] At present, one of the problems of split grouting is that sometimes due to the influence of soil and machinery, it is impossible or difficult to form relatively developed grout veins.
The splitting effect is not good, and the degree of improvement of soil properties is average
Method used
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Embodiment
[0032] The construction site of a certain project is 52m long and 34m wide, and the site soil is primary loess. The foundation of the site is reinforced by the grouting device of the present invention, and the thickness of the soil layer to be reinforced is 2m to 2.8m.
[0033] Connect the upper grouting pipe 8 with the grouting machine, the grout bucket, etc., for providing grout. The power cord 2 is connected to the power supply. The slurry is sent into the upper grouting pipe 8, the start-stop switch 4 is turned on, the motor 6 starts to work, the motor shaft drives the driving sprocket to rotate, and the driving sprocket drives the sprocket 14 to rotate through the chain 7, and the sprocket 14 then drives the outer circular mold 11 rotates, and the outer circular mold 11 drives the lower grouting pipe 16 to rotate through the inner circular mold 10. At this time, the sleeve 15, the connecting pipe 17 and the connector 9 do not rotate, and the grouting channel is guaranteed...
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The invention discloses a rotary jet splitting grouting device, which comprises a frame on which a connected grouting main body and a motor are installed; the grouting main body includes a coaxially arranged lower grouting pipe, an inner circular mold, and an outer circular mold and the sleeve; the upper part of the lower grouting pipe is connected to the connecting pipe through a bearing; the connecting pipe is composed of two cylinders with different outer diameters arranged coaxially, and the outer wall of the cylinder with a smaller outer diameter is connected to the inner ring of the bearing. The outer ring of the bearing is connected to the inner hole of the lower grouting pipe; the upper end of the cylinder with a larger outer diameter of the connecting pipe is connected to the flange of the connecting piece; the upper end of the connecting piece is connected to the flange of the upper grouting pipe; tube; the inner round die is fixedly connected with the outer round die; the sleeve is connected with the outer round die through the second bearing. The splitting grouting device can inject grout into the surroundings relatively uniformly, cut and destroy part of the soil, and the part of the soil is stirred and mixed with the grout to form a consolidated body, and it is easier to form grout veins. improvement in physical performance.
Description
technical field [0001] The invention belongs to the technical field of construction equipment and relates to a grouting device, in particular to a rotary jet splitting grouting device. Background technique [0002] Splitting grouting is one of the common methods of grouting to strengthen the soil. When the grout is injected into the soil, it will first compact or infiltrate the surrounding soil. When the grout pressure exceeds a certain value, the grout will split the soil. Grout veins form and expand to form a vein-like consolidation that strengthens the soil. [0003] At present, one of the problems of split grouting is that sometimes due to the influence of soil quality and machinery, it is impossible or difficult to form relatively developed grout veins. The splitting effect is poor, and the degree of improvement of soil properties is average. Contents of the invention [0004] The purpose of the present invention is to provide a rotary jet splitting grouting device ...
Claims
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IPC IPC(8): E21B33/13E02D3/12E02D15/04
CPCE02D3/126E02D15/04
Inventor 吕擎峰刘备陈臆韩启亮郭连星单小康谷留杨
Owner LANZHOU UNIVERSITY