CN203961899U - Upwards extend the hole sealing device of boring - Google Patents

Abstract

A kind of hole sealing device that upwards extends boring, orifice tube adopts welding manner to be connected with flange, flange covers plate with flange and adopts pretension screw to be connected, pvc pipe and pvc pipe valve are connected respectively on the positive back side of flange masking-out, slip casting valve is connected in flange masking-out, Grouting Pipe one end connects slip casting valve, and the other end connects grouting pump, and grouting pump can pumped slurry.The step that this device uses is: orifice tube is first installed in boring; In hole, be lowered to pvc pipe again, be lowered to length and be equal to or slightly less than drilling depth; Then pvc pipe and flange are covered to plate and be connected, flange and flange cover plate and connect; Finally open pvc pipe valve, boring is carried out to slip casting, in the time that pvc pipe valve starts to return slurry, stop grouting pump, close pvc pipe valve and slip casting valve, after slurries fully solidify, complete the shutoff to boring.

Description

Hole sealing device extending upwards

Technical field

The utility model relates to a drilling and sealing device, in particular to a sealing device for upwardly extending drilling.

Background technique

Grouting and sealing is the most commonly used treatment method for abandoned boreholes, that is, grout is poured into the boreholes to fill the boreholes and prevent potential safety hazards in the boreholes. The grouting method is relatively simple for the plugging of boreholes extending downward, because the density of the grout is generally greater than that of water, and the grout can eventually fill the entire borehole even if it is grouted from the orifice, and has a good sealing effect. It is more difficult to plug the drill hole extending upward. First, it is impossible to grout directly from the orifice, because the grout will flow out naturally. Second, if the orifice pipe is installed at the orifice to force grout into the hole, because In a relatively closed state, the grouting pressure required for grouting is generally high, which cannot be satisfied by general grouting machinery.

Contents of the invention

In order to overcome the disadvantage of the difficulty of sealing holes in the commonly used method of extending upward drilling and sealing holes, the utility model provides a sealing device for upward extending drilling, which can realize effective sealing of upward extending drilling.

The technical scheme adopted by the utility model is: the sealing device for extending the drilling upwards includes an orifice pipe, a flange, a flange cover, a pre-tightening screw, a PVC pipe, a PVC pipe valve, a grouting pipe, a grouting Pumps, grouting valves. The specifications of the flange plate and the orifice pipe are consistent, and the two are connected by welding; the specifications of the flange plate and the flange cover plate are consistent, and the two are connected by pre-tightening screws; the small-diameter PVC pipe is used, and its total length is equal to or slightly Less than the drilling depth, the PVC pipe can be connected to the back of the flange mask, and the front of the connection position on the flange mask is connected to the PVC pipe valve, and the fluid can be injected into the PVC pipe through the PVC pipe valve; the grouting valve Connected to the flange mask; the grouting pump, the grouting pipe, and the grouting valve are connected in sequence, and the grouting pump can inject grout into the borehole.

The specific steps when using the sealing device for extending the drilling hole upwards are as follows: ①Install the orifice pipe with the flange in the upward extending drilling hole, the installation length of the orifice pipe is 3-5m; ②Put PVC into the hole Pipe, the running length is equal to or slightly less than the drilling depth; ③Connect the PVC pipe with the flange cover; ④Tightly connect the flange and the flange cover with pre-tightening screws; Connect the pipe and the grouting valve in sequence, open the PVC pipe valve, and grout the borehole through the grouting pump. During the process, the PVC pipe valve is always open; When it is full, stop the grouting pump, close the PVC pipe valve and the grouting valve, and complete the plugging of the borehole after the grout is fully solidified.

The core of the utility model is to set a PVC pipe in the borehole. When the slurry is injected into the borehole, the gas can be discharged from the PVC pipe, which reduces the difficulty of grouting; and the PVC pipe can also play a role in inspection and injection. The effect of the slurry effect, because the PVC pipe is installed at the bottom of the drill hole, only when the slurry liquid level rises to the bottom of the drill hole, the PVC pipe will return to the slurry. Similarly, the return of the PVC tube to the slurry indicates that the slurry has filled the drill hole.

The beneficial effect of the utility model is that the device can be applied to the sealing operation of upwardly extending drilled holes, and the principle is simple, the operation is convenient, and the effect is guaranteed.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a schematic diagram during the use of the utility model.

In the figure: 1. drilling, 2. orifice pipe, 3. flange, 4. flange cover, 5. pre-tightening screw, 6. PVC pipe, 7. PVC pipe valve, 8. grouting valve , 9. Grouting pipe, 10. Grouting pump, 11. Grout, 12. Air.

Detailed ways

In the figure, the specifications of the orifice pipe (2) and the flange (3) are consistent, and the two are connected by welding; the specifications of the flange (3) and the flange cover (4) are consistent, and both are preloaded Screw (5) connection; select the PVC pipe (6) of small aperture for use, its total length is equal to or slightly less than the depth of drilling (1); PVC pipe (6) is connected on the back of the flange plate mask (4), and its The front side of the connection position on the flange mask (4) is connected to the PVC pipe valve (7); the grouting valve (8) is connected to the flange mask (4); one end of the grouting pipe (9) is connected to the grouting valve (8), the other end is connected to the grouting pump (10); the grouting pump (10) can pump the grout (11). The specific steps when the utility model is implemented are: first install the orifice pipe (2) with the flange (3) in the borehole (1), the orifice pipe (2) is installed with a length of 3-5m; Insert the PVC pipe (6) into the inside, the length of which is equal to or slightly less than the depth of the drilled hole (1); then connect the PVC pipe (6) with the flange cover (4), connect the flange (3) The blue plate cover (4) is tightly connected by the pre-tightening screw (5); finally open the PVC pipe valve (7), the grouting valve (8) is connected to the grouting pipe (9), and the grouting pipe (9) is connected to the grouting pump (10), carry out grouting to the borehole (1), the PVC pipe valve (7) will return air in the early stage of grouting, when the PVC pipe valve (7) starts to return grout, then stop the grouting pump (10), close the PVC The pipe valve (7) and the grouting valve (8) will complete the plugging of the borehole (1) after the slurry (11) is fully solidified.

Claims (2)

1. A sealing device for drilling upwards, which is characterized in that: the orifice pipe and the flange are connected by welding, the flange and the flange cover are connected by pre-tightening screws, the PVC pipe and the PVC pipe valve Correspondingly connected to the front and back of the flange plate mask, the grouting valve is connected to the flange plate mask, one end of the grouting pipe is connected to the grouting valve, and the other end is connected to the grouting pump, and the grouting pump can pump the grout. 2. The hole sealing device for extending upward drilling according to claim 1, characterized in that: the length of the PVC pipe is equal to or slightly less than the drilling depth.