CN105696598B - A kind of application method for being adapted to mini-valve tube elevation angle grouting device - Google Patents

Abstract

The invention discloses a device suitable for grouting at an elevation angle of a sleeve valve pipe and a method for using it. The rubber sleeve, from the inside to the outside along the radial direction of the sleeve valve tube, is equipped with an inner jacking tube, a skeleton galvanized steel pipe and an outer jacking tube on the sleeve valve tube, and the inner ring on the top of the skeleton galvanized steel pipe is fitted with an inner slurry stopper , the outer ring is set with an outer stopper, and the tops of the inner and outer stoppers are axially fixed, and the bottoms of the inner and outer stoppers are respectively matched with the inner and outer jacking pipes; the inner and outer jacking pipes are driven to move up and down to realize the inner , The expansion or contraction of the outer grout stopper, and then realize the segmented grouting.

Description

A method of using a grouting device adapted to the elevation angle of the sleeve valve pipe

technical field

The invention relates to the field of grouting, in particular to a method for using a sleeve valve tube elevation angle grouting device.

Background technique

Grouting has always been an effective method to deal with bad geology, and has achieved good treatment effects. Most of the grouting technologies now are aimed at deep grouting, and there are many shallow clay grouting projects, such as water in excavation of foundation pits and excavation of subway stations. The shallow clay grouting has the following difficulties: the grouting pipeline is difficult to fix; the grouting pressure cannot be increased, and it is difficult to split the clay body, resulting in the grout not entering the clay. The slurry cannot be injected.

In the past, sleeve valve tubes were mostly used, and shell materials were filled around the sleeve valve tubes to stabilize them. There are three shortcomings in the stabilization of sleeve valve tubes. One is that the operation is troublesome; the other is that although it can play a certain role, the stabilization effect is not good; the third is When the sleeve valve pipe is used for drilling and grouting at an elevation angle, it is generally difficult for the casing material to enter the borehole.

Contents of the invention

The object of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a device and a method for using the sleeve valve pipe elevation angle grouting instead of casing material. The device has a simple structure, low cost of manufacturing materials, can be recycled and is easy to operate.

To achieve the above object, the present invention adopts the following technical solutions:

A sleeve valve tube elevation angle grouting device to replace the shell material: it includes a sleeve valve tube, and grout holes are arranged at intervals on the sleeve valve tube, and a rubber sleeve is set outside each grout hole, along the In the radial direction of the sleeve valve pipe, the inner jacking pipe, the skeleton galvanized steel pipe and the outer jacking pipe are set on the sleeve valve pipe in turn from the inside to the outside. The outer grout stopper is set, and the tops of the inner and outer grout stoppers are axially fixed, and the bottoms of the inner and outer grout stoppers are respectively matched with the inner and outer jacking pipes; by driving the inner and outer jacking pipes to move up and down, the inner and outer Expansion or contraction of the outer grout stopper to achieve segmented grouting.

Further, the top and bottom of the inner grout stopper are provided with inner washers, the inner washers at the bottom cooperate with the end of the inner jacking pipe, and the inner washers at the top are axially fixed by an inner fixing nut.

Further, the top and bottom of the outer stopper are provided with outer washers, the outer washers at the bottom cooperate with the end of the outer jacking pipe, and the outer washers at the top are axially fixed by the outer fixing nuts.

Further, the bottom inner ring of the galvanized steel pipe of the skeleton is equipped with an inner clamping nut, which is pressed against the end of the inner jacking pipe, and the inner clamping nut is also connected with a handle; by rotating the handle, the The inner jacking nut moves inward or outward along the inner wall of the skeleton galvanized steel pipe, and then realizes the inner and outer movement of the inner pipe jacking. When the inner jacking pipe moves inward, it compresses the inner grout stopper, and the inner grout stopper expands. When the inner jacking pipe moves outward, loosen the inner stopper, and the inner stopper shrinks;

Further, an outer clamping nut is installed on the bottom outer ring of the skeleton galvanized steel pipe, and the outer clamping nut is pressed against the end of the outer jacking pipe, and the outer clamping nut is also connected with a handle; by rotating the handle, the outer clamping nut The jacking nut moves inward or outward along the outer wall of the skeleton galvanized steel pipe, and then realizes the inner and outer movement of the outer pipe jacking. When the outer pipe jacking moves inward, it compresses the outer grout stopper, and the outer grout stopper expands. When the outer jacking pipe moves outward, loosen the outer stopper, and the outer stopper shrinks;

Further, the material of the sleeve valve pipe is changed from traditional PVC pipe to steel pipe, in order to withstand the pressure of the stopper plug and prevent rupture; another function of the steel pipe is to collect the slurry from the inner jacking pipe to make it flow from a specific position ( grout hole) to flow out to achieve segmented grouting.

Further, there are pulp outlet holes at a distance of 33 cm on the sleeve valve tube, and several rubber sleeves are set over the pulp outlet holes.

Further, the end of the sleeve valve pipe is connected to the grouting device, and the grouting device includes a grouting pipe, and a grouting valve and a pressure relief valve are arranged on the grouting pipe.

A method for making and using a device for replacing casing material with elevation angle grouting of sleeve valve pipe is as follows:

(1) Use a drilling rig (pneumatic drill or rotary) to drill to the designed hole depth, withdraw the drill pipe, and push the sleeve valve tube and the replacement casing material device to the design position as shown in Figure 1. , grouting pump connected,

(2) Turn the inner and outer jacking nuts to move forward along the skeleton galvanized steel pipe, so that the inner and outer jacking pipes are pushed forward to tighten the gasket to make the stop plug expand under pressure, and respectively seal the drilling wall and the skeleton galvanized steel pipe, skeleton galvanized steel pipe The gap between the zinc steel pipe and the steel sleeve valve pipe can replace the traditional shell material;

(3) During grouting, the grout flows out from the grout hole of the sleeve valve pipe and enters between the sleeve valve pipe and the side wall of the borehole. Due to the (rubber) grout stopper blocking, the grout can only enter the formation at the upper part of the grout stopper. Complete this section of grouting.

(4) After stopping the grouting, turn the inner and outer tightening nuts to restore the rubber stopper to its original shape, and pull the skeleton galvanized steel pipe back to the grouting position of the next stage, so that the stopper is squeezed again to connect the drilling wall and the skeleton The gap between the galvanized steel pipe, the skeleton galvanized steel pipe and the steel sleeve valve pipe is closed, and the grouting operation is carried out in this section, and the step-by-step grouting is repeated until the grouting of the hole is completed.

The beneficial effects of the present invention are:

Replace the traditional sleeve valve sleeve shell material with a grout stopper. When the grout stopper expands and opens, the gap between the drill hole and the sleeve valve pipe is closed, so that the slurry can only enter the formation from the front part of the grout stopper, realizing segmentation Grouting. Compared with the traditional sleeve valve pipe grouting process, the present invention saves casing material raw materials, solves the problem that the casing material is difficult to close at the elevation angle of the sleeve valve pipe, and at the same time, the segmented grouting controlled by the grout stopper is more flexible and convenient.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are For some embodiments of the present invention, those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the expanded top view of the grouting plug of the present invention;

In the figure: 1. Slurry inlet pipe; 2. Slurry inlet valve; 3. Pressure relief valve; 4. Outer jacking nut; 5. Outer jacking handle; 6. Washer; 7. Skeleton galvanized steel pipe; 8. Drilling Wall; 9. Sleeve valve tube; 10. Outer gasket; 11. Outer fixing nut; 12. Slurry hole; 13. Inner pipe jacking handle; 14. Inner stopper; 15. Outer stopper; 17. Inner washer; 18. Inner fixing nut; 19. Inner pipe jacking; 20. Outer pipe jacking, 21 inner jacking nut.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Aiming at the problem that the sleeve valve pipe is difficult to seal and grout at an elevation angle, the invention proposes a casing material replacement device, which can well solve the problem of the sleeve valve pipe grouting at an elevation angle.

As shown in Figure 1 and Figure 2, a sleeve valve tube elevation angle grouting device to replace the casing material, including a sleeve valve tube and a casing material replacement device, etc. The material of the sleeve valve tube is changed from traditional PVC pipe to steel pipe. In order to withstand the pressure of the grout stopper; the replacement casing material device consists of a skeleton galvanized steel pipe, inner and outer pipe jacking and a grout stopper, etc. The skeleton of the replacement casing material device is a galvanized steel pipe, and the upper end of the skeleton galvanized steel pipe is in turn an inner and outer fixing nut , inner and outer washers, and grout stopper, in which the skeleton galvanized steel pipe is fixed at the bottom of the galvanized steel pipe by connecting inner and outer wires with inner and outer fixing nuts, the upper and lower inner and outer washers clamp the grout stopper, and are connected to the inside and outside of the orifice through inner and outer jacking pipes The washer, the lower end is the inner and outer handles connected by the inner and outer wires of the skeleton galvanized steel pipe to control the washer to move up and down. The specific structure is as follows:

Sleeve valve tube elevation angle grouting device instead of shell material: including sleeve valve tube 9, on which sleeve valve tube 9 is provided with grout holes 12 at intervals, each grout hole 12 is covered with a rubber sleeve 16, sleeve The end of the valve pipe 9 is connected to the grouting device; along the radial direction of the sleeve valve pipe 9, the inner jacking pipe 19, the skeleton galvanized steel pipe 7 and the outer jacking pipe 20 are placed on the sleeve valve pipe 9 in sequence from the inside to the outside. , the inner ring at the top of the skeleton galvanized steel pipe 7 is fitted with an inner stopper 14, the outer ring is set with an outer stopper 15, and the tops of the inner and outer stoppers are axially fixed, and the inner and outer stoppers The bottom of the pump is respectively matched with the inner and outer jacking pipes; by driving the inner and outer jacking pipes to move up and down, the expansion or contraction of the inner and outer grout stoppers is realized, thereby realizing segmented grouting.

The upper end of the skeleton galvanized steel pipe 7 is the inner and outer fixing nuts, the inner and outer washers, and the grout stopper. The plug is connected to the inner and outer gaskets of the orifice through the inner and outer jacking pipes, and the inner and outer handles at the lower end are connected by the inner and outer wires of the skeleton galvanized steel pipe to control the gasket to move up and down to achieve the purpose of controlling the expansion and contraction of the grout stopper.

Further, the top and bottom of the inner grout stopper 14 are provided with inner washers 17, the inner washers 17 at the bottom cooperate with the end of the inner jack pipe, and the inner washers 17 at the top are axially connected by an inner fixing nut 18 fixed.

Further, the top and bottom of the outer grout stopper 15 are provided with outer gaskets 10, the outer gasket 10 at the bottom cooperates with the end of the outer jacking pipe, and the outer gasket 10 at the top is axially fixed by an outer fixing nut 11 .

Further, an inner tightening nut 21 is installed on the bottom inner ring of the skeleton galvanized steel pipe 7, and the inner tightening nut 21 is pressed against the end of the inner jacking pipe 19, and the inner jacking nut 21 is also connected with an inner jacking nut 21. The pipe handle 13 is connected; by rotating the handle, the inner tightening nut 21 moves inward or outward along the inner wall of the skeleton galvanized steel pipe 7, thereby realizing the inner and outer movement of the inner jacking pipe 19. When the inner jacking pipe 19 moves inward, Compress the inner stopper 14, the inner stopper 14 expands, when the inner jacking pipe 19 moves outward, loosen the inner stopper, and the inner stopper shrinks;

Further, an outer tightening nut 4 is installed on the bottom outer ring of the skeleton galvanized steel pipe 7, and the outer tightening nut 4 is pressed on the end of the outer jacking pipe 20, and the outer jacking nut 4 is also connected with an outer jacking nut 4. The handle 5 is connected; by rotating the handle, the outer jacking nut 4 moves inward or outward along the outer wall of the skeleton galvanized steel pipe 7, thereby realizing the inner and outer movement of the outer jacking pipe 20. When the outer jacking pipe 20 moves inward, the pressing Tighten the outer stopper 15, the outer stopper 15 expands, when the outer jacking pipe 20 moves outward, loosen the outer stopper 15, the outer stopper 15 shrinks;

Further, the bottom of the skeleton galvanized steel pipe 7 is provided with a washer 6 .

Further, the material of the sleeve valve pipe 9 is changed from a traditional PVC pipe to a steel pipe, in order to withstand the pressure of the grout stopper and prevent rupture; another function of the steel pipe is to collect the grout coming out of the inner jacking pipe so that it can flow from a specific position (Grout hole) flows out to realize segmented grouting.

Further, there are pulp outlet holes at a distance of 33 cm on the sleeve valve tube, and several rubber sleeves are set over the pulp outlet holes;

Further, the grouting device includes a grout feeding pipe 1 on which a grout feeding valve 2 and a pressure relief valve 3 are arranged.

The method for making and using a device for replacing casing material with elevation angle grouting of a sleeve valve tube is characterized in that it is as follows:

(1) Use a drilling rig (pneumatic drill or rotary) to drill to the designed hole depth, withdraw the drill pipe, push the sleeve valve pipe 9 and the replacement shell material device as shown in Figure 1 to the design position, and the rear end of the pipe jacking pipe in the sleeve valve pipe and the slurry feed The pipe and the grouting pump are connected,

(2) Turn the inner and outer jacking nuts to move forward along the skeleton galvanized steel pipe 7, so that the inner and outer jacking pipes are pushed forward to tighten the washers so that the stopper is compressed and expanded, and the drilling wall 8 and the skeleton galvanized steel pipe are respectively closed. The gap between the steel pipe 7, the skeleton galvanized steel pipe 7 and the steel sleeve valve pipe 9 can replace the traditional casing material;

(3) During grouting, the grout flows out from the grout hole of the sleeve valve pipe and enters between the sleeve valve pipe 9 and the borehole wall 8. Due to the (rubber) grout stopper blocking, the grout can only enter the formation at the upper part of the grout stopper , to complete the grouting section.

(4) After stopping the grouting, turn the inner and outer tightening nuts to restore the rubber stopper to its original shape, and pull the skeleton galvanized steel pipe back to the grouting position of the next stage, so that the stopper is squeezed again to connect the drilling wall and the skeleton The gap between the galvanized steel pipe, the skeleton galvanized steel pipe and the steel sleeve valve pipe is closed, and the grouting operation is carried out in this section, and the step-by-step grouting is repeated until the grouting of the hole is completed.

Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, those skilled in the art do not need to pay creative work Various modifications or variations that can be made are still within the protection scope of the present invention.

Claims (7)

1. a kind of application method for being adapted to mini-valve tube elevation angle grouting device, described device includes mini-valve tube, in described sleeve What is be spaced on valve pipe is provided with slurry outlet, and rubber case is set with outside each slurry outlet,

Interior push pipe, skeleton coating steel pipe and outer top are set with outside mini-valve tube successively from inside to outside along the radial direction of mini-valve tube Pipe,

Stop grouting plug in inner ring suit at the top of the skeleton coating steel pipe, outer ring is set with outer stop grouting plug, and the inside and outside only slurry The top axial restraint of plug, the bottom of inside and outside stop grouting plug coordinates with inside and outside push pipe respectively；By driving the upper and lower of inside and outside push pipe The expansion or shrinkage of inside and outside stop grouting plug is realized in movement, and then realizes segmenting slip casting, it is characterised in that：

（1）Design hole depth is drilled into using rig, drilling rod is exited, described device is pushed into design attitude, push pipe in mini-valve tube Rear end connects with pulp-inlet pipe, grouting pump,

（2）By handle turn it is inside and outside hold out against nut make its along skeleton coating steel pipe move forward, and then make inside and outside push pipe to Before hold out against packing ring and make stop grouting plug by compression swelling, close off the wall of a borehole with skeleton coating steel pipe, skeleton coating steel pipe and steel pipe sleeve Gap between valve pipe；

（3）Slurries flow out from mini-valve tube slurry outlet during slip casting, enter between mini-valve tube and borehole sidewall, due to stop grouting plug resistance Gear, slurries can only enter stratum, complete this section of slip casting in stop grouting plug upper position；

（4）The inside and outside nut that holds out against of turn makes rubber stop grouting plug restore to the original state after stopping slip casting, pulls back skeleton coating steel pipe and arrives Next stage slip casting position, makes stop grouting plug be squeezed the wall of a borehole and skeleton coating steel pipe, skeleton coating steel pipe and steel pipe again Gap closing, carries out this section of grouting operation between mini-valve tube, so retreats segmenting slip casting repeatedly until the hole slip casting terminates.

2. the application method of mini-valve tube elevation angle grouting device is adapted to as claimed in claim 1, it is characterised in that described is interior Inner washer is provided with the top and bottom of stop grouting plug, is coordinated with the end of interior push pipe positioned at the inner washer of bottom, in top Packing ring passes through an interior fixing nut axial restraint.

3. the application method of mini-valve tube elevation angle grouting device is adapted to as claimed in claim 1, it is characterised in that described is outer Outer washer is provided with the top and bottom of stop grouting plug, is coordinated with the end of outer push pipe positioned at the outer washer of bottom, positioned at the outer of top Packing ring is by outer fixing nut axial restraint.

4. the application method of mini-valve tube elevation angle grouting device is adapted to as claimed in claim 1, it is characterised in that the skeleton The bottom inner ring of coating steel pipe is installed in one and holds out against nut, is inside held out against nut and is pressed on interior push pipe end, it is described in hold out against Nut is also connected with a handle；By rotary handle so that it is interior hold out against nut along skeleton coating steel pipe inwall inwardly or Move out, and then realize the inside and outside motion of interior push pipe.

5. the application method of mini-valve tube elevation angle grouting device is adapted to as claimed in claim 1, it is characterised in that the skeleton The bottom outer ring of coating steel pipe is installed one and holds out against nut outward, nut is held out against outward and is compressed in outer push pipe end, described outer to hold out against Nut is also connected with a handle；By rotary handle so that it is outer hold out against nut along skeleton coating steel pipe outer wall inwardly or Move out, and then realize the inside and outside motion of outer push pipe.

6. the application method of mini-valve tube elevation angle grouting device is adapted to as claimed in claim 1, it is characterised in that described sleeve The end of valve pipe is connected with grouting device.

7. the application method of mini-valve tube elevation angle grouting device is adapted to as claimed in claim 1, it is characterised in that described sleeve Valve tubing matter is steel pipe.