CN207332826U - A kind of sleeve valve grouting device for becoming grouting serous fluid denseness - Google Patents

Abstract

The utility model discloses a sleeve valve grouting device for changing the consistency of grouting slurry, which comprises a water injection system, a grouting system, a sleeve sleeve, a bowl-shaped grout stopper, a grouting core pipe grouting hole, a water injection pipe draining hole, and a grouting hole. Pulp hole, vibrator. The grouting system uses the grouting pipe to connect the grouting pump, the grouting pressure gauge, the grouting flowmeter, and the grouting core pipe in sequence; the water injection system uses the grouting pipe to connect the watering pump, the watering pressure gauge, the watering flowmeter, The water injection pipes are connected in sequence. The water injection pipe is arranged coaxially with the grouting core pipe, and the upper part is connected with a vibrator, and the vibration of the vibrator drives the water injection pipe to vibrate, so that the consistency of the grouting slurry is uniform. Adjust the grouting pressure and water injection pressure, grouting volume and water injection volume of the grouting pump and water injection pump, so as to continuously change the consistency of the grouting slurry, so that the thickened slurry can be filled in the rock cracks, so that the rock cracks can be filled more densely, avoiding If the grouting slurry is thickened too quickly, the rock joints will be blocked suddenly, which will result in better grouting filling effect and improve construction efficiency.

Description

A sleeve valve grouting device with variable grouting slurry consistency

technical field

The utility model belongs to the technical field of grouting construction equipment in geotechnical engineering, and relates to a sleeve valve grouting device with variable grouting slurry consistency.

Background technique

When grouting with sleeve valve pipe, too thick grout means the increase of viscosity and flow resistance, which will lead to the decrease of grout rate and flow rate under the same pressure, so that cement particles will be deposited prematurely in rock fractures. With each level of thickening of the slurry, a deposition point closer to the pore wall occurs. If the slurry thickens too quickly, it may cause the rock fractures to be blocked suddenly, so that the rock fractures cannot be fully filled.

When using the sleeve valve tube for grouting, it is necessary to change the grouting consistency according to the pressure and suction rate, and when changing the grouting consistency, it is necessary to change the water-cement ratio of the grout. The water-cement ratio of my country's current standard slurry adopts nine ratios, and the water-cement ratio gap between each ratio is large. It is inconvenient to mix grout with different consistency on site, which affects the grouting efficiency and further affects the construction progress. It can be seen that there is a need for a sleeve valve grouting device that can easily change the consistency of the slurry, so as to further improve the prior art.

Contents of the invention

The purpose of the utility model is to design a sleeve valve grouting device with variable grouting slurry consistency, thereby improving the grouting effect and improving the construction efficiency.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a sleeve valve grouting device with variable grouting slurry consistency, including a water injection pump, a water injection flow meter, a water injection pressure gauge, a grouting core pipe, a water injection pipe, and a sleeve Tube, bowl-shaped grout stopper, grouting core tube grouting hole, water injection pipe drain hole, grouting hole, grouting pump, grouting flow meter, grouting pressure gauge, vibrator, liquid injection pipe, grouting pipe, Rubber cover.

The grouting core pipe and the sleeve valve pipe are coaxially arranged, and there is a gap between the sleeve valve pipe and the grouting core pipe, and there are four bowl-shaped grout stoppers on the outer wall of the grouting core pipe.

The grouting pump, the grouting pressure gauge, the grouting flowmeter, and the grouting core pipe are connected in sequence through the grouting pipe to form a grouting system; the watering pump, the watering pressure gauge, the watering flowmeter, and the watering pipe Connect in sequence to form a water injection system.

Further, the grouting pressure gauge can dynamically monitor the grout pressure in the grouting pipe, and adjust the grout consistency in time. The grouting flowmeter can accumulatively record the volume of grout flowing through.

Further, the water injection pressure gauge can dynamically monitor the water pressure in the liquid injection pipe. The water injection flowmeter can cumulatively record the volume of water flowing through.

The grouting core pipe is provided with a grouting outlet for the grouting core pipe, and the water injection pipe is provided with a drainage hole for the water injection pipe. The sleeve pipe is a plastic pipe with an inner diameter of 50-60 mm. hole.

Further, the grouting core pipe and the water injection pipe are coaxially arranged, the diameter of the water injection pipe is smaller than the grouting core pipe, the water injection pipe can be inserted into the grouting core pipe for water injection, the length of the water injection pipe is consistent with the length of the grouting core pipe, and the water and The grouting slurry is mixed more evenly.

Further, a vibrator is connected to the upper part of the water injection pipe, and the vibration of the vibrator drives the water injection pipe to vibrate in the grouting core pipe during grouting, so that the water is evenly distributed in the grouting slurry and the consistency of the grouting slurry is uniform.

Further, as the grouting proceeds, the pressure of the grouting pump and the water injection pump can be adjusted through the relative relationship between the grouting flowmeter and the water injection flowmeter to adjust the flow rate of the grouting slurry and water, thereby adjusting the grout consistency , so as to achieve the purpose of slurry gradually changing from thin to thick.

Due to the adoption of the above-mentioned technical scheme, the beneficial effects obtained by the utility model are: in the same grouting section, including cracks of different widths, the technical scheme can continuously change the grouting slurry consistency with the grouting process, firstly by adjusting the grouting amount and The amount of water injected is used to adjust the grouting consistency, so that the consistency is small, the fluidity is good, and the small cracks are filled. Secondly, through the grouting pump and water injection pump, the grouting amount and water injection amount are constantly adjusted to change the grouting slurry consistency, so that the thickened grout will appear in the rock crevice as a deposition point closer to the hole wall, and it will be continuously filled, so that the rock crevice will be filled densely. Achieve good grouting filling effect. Finally, this technical solution does not require on-site adjustment of grout of different consistency, but only needs to adjust the amount of grouting and water injection to achieve automatic deployment of grout of different consistency, which significantly improves the construction efficiency.

Description of drawings

Figure 1 is a sectional view of a sleeve valve grouting device with variable grouting slurry consistency.

Figure 2 is a cross-sectional schematic diagram of the positions of the grouting core pipe and the water injection pipe.

Legend: 1—water injection pump; 2—water injection pressure gauge; 3—water injection flow meter; 4—grouting core pipe; 5—water injection pipe; 6—sleeve pipe; 7—bowl-shaped grout stopper; Core tube grouting hole; 9—injection pipe drainage hole; 10—injection hole; 11—grouting pump; 12—grouting pressure gauge; 13—grouting flow meter; 14—vibrator; 15—injection pipe; 16—grouting pipe; 17—rubber sleeve; 18—shell material.

Detailed ways

The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment. The construction steps for grouting are as follows.

Step 1: Drill the grouting holes. The hole diameter is 80mm~100mm, the mud wall is used, and the verticality error of the drilling hole should be less than 1%.

Step 2: Insert the sleeve tube. The sleeve pipe (6) is a plastic pipe with an inner diameter of 50 mm to 60 mm, and a group of grouting holes (10) are drilled every 33 to 50 cm, and the pipe ends are closed.

The third step: filling the casing material (18) in the hole. Its effect is to close the space between the sleeve sleeve pipe (6) and the borehole. The casing material is mud.

The fourth step: grouting. After the sealing mud reaches a certain strength, insert the grouting core pipe (4) and the water injection pipe (5) in the sleeve pipe (6). During grouting, water is pressurized by the water injection pump (1), passes through the liquid injection pipe (15), and flows through the water injection pressure gauge (2), the water injection flow meter (3), and the water injection pipe (5). Pressurize the grouting pump (11) to make the grouting slurry flow through the grouting pressure gauge (12), the grouting flow meter (13), and the grouting core pipe (4); make the water pass through the drainage hole of the water injection pipe (9) It is mixed with the grouting slurry in the grouting core pipe (4), and then flows out of the grouting hole (10). Increase the pressure of the grouting pump (11) so that the grout pushes away the rubber sleeve (17) and breaks the casing material (18). During grouting, the vibration of the vibrator (14) drives the water injection pipe (5) to vibrate in the grouting core pipe (4), so that the water is evenly distributed in the grouting slurry and the consistency of the grouting slurry is uniform. As the grouting progresses, the grouting slurry can be adjusted by adjusting the pressure of the grouting pump (11) and the water injection pump (1) through the relative relationship between the grouting flowmeter (12) and the water injection flowmeter (2). The flow of water and water changes the consistency of the grouting slurry, and the grouting slurry changes from thin to thick, so that the thickened grout will appear in the rock fractures as deposition points closer to the hole wall, and will continue to fill, so that the rock fractures will be filled densely to achieve good grouting. slurry filling effect.

Claims (1)

1. a kind of sleeve valve grouting device for becoming grouting serous fluid denseness, it is characterised in that the device is by slip casting core pipe, water injection pipe, sleeve Casing, bowl-type stop grouting plug, slip casting core pipe plasma discharge hole, water injection pipe osculum, penetrates slurry hole, vibrator composition；The slip casting core pipe with Two groups of bowl-type stop grouting plugs, mortar leakage prevention are set respectively up and down between oversleeve pipe, and water injection pipe is coaxially disposed with slip casting core pipe, water injection pipe Diameter is less than slip casting core pipe, and length is consistent with slip casting core pipe length, water injection pipe top connection vibrator, water injection pipe insertion slip casting core Pipe portion fractionation sets water injection pipe osculum, by the vibrations of vibrator make the water that is flowed out out of water injection pipe osculum with slip casting core pipe Slurries are uniformly mixed, so as to adjust flow in water injection pipe and dynamic regulation slurry consistency, are stayed in slip casting core pipe and are set slip casting core pipe Plasma discharge hole, becomes the slurry hole of penetrating that denseness slurries are set by being stayed on oversleeve pipe and injects rock mass.