CN211174047U - Sealing structure of grouting pipe welding baffle ring - Google Patents
Sealing structure of grouting pipe welding baffle ring Download PDFInfo
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- CN211174047U CN211174047U CN201922186946.2U CN201922186946U CN211174047U CN 211174047 U CN211174047 U CN 211174047U CN 201922186946 U CN201922186946 U CN 201922186946U CN 211174047 U CN211174047 U CN 211174047U
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- slip casting
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- casting pipe
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Abstract
The utility model provides a slip casting pipe welding keeps off ring hole sealing structure, concretely relates to slip casting pipe welding keeps off ring structure, including the slip casting pipe, the slip casting pipe is hollow structure, has seted up a plurality of grout outlets on the anterior segment of slip casting pipe, is provided with on the back end of slip casting pipe and keeps off the ring, and the front side that keeps off the ring is provided with the toper of suit on the slip casting pipe and ends the thick liquid stopper. Wherein welding fender ring and slip casting pipe are with the material, use electric welding technology welding at the slip casting pipe tip, keep off the adjustable in concrete position of ring, width and thickness are according to engineering practice effect feedback correction, stop on the slip casting pipe of thick liquid stopper cover, keep off ring in close contact with the slip casting, form the hole sealing structure, the shutoff is by interior and outside thick liquid, prevents to run the thick liquid. The utility model is suitable for a soft rock slip casting engineering for the injected hole leakproofness is good, can not leak thick liquid, has the material and conveniently acquires, advantage such as with low costs, construction simple process, the hole sealing degree of depth is controllable.
Description
Technical Field
The utility model relates to a slip casting pipe welding keeps off ring hole sealing structure is applicable to the hole sealing slip casting reinforcing operation that geotechnical engineering such as colliery, tunnel goes on soft country rock.
Background
Soft rock generally exists in geotechnical engineering such as mines, water conservancy, tunnels, subways and the like, and the engineering property of the soft rock cannot be changed by passive and active anchoring support of the metal support, so that deformation and damage of the soft rock engineering cannot be fundamentally controlled. The grouting modification is utilized to solidify the soft rock, block the soft rock cracks, improve the compactness of the soft rock, form a soft rock integral structure and prevent crack water from immersing and soft rock argillization, so that the grouting modification method is an effective technical approach for utilizing and developing the self bearing capacity of the soft rock and is a key means for preventing the soft rock from deteriorating when encountering water.
The high-quality sealing of the grouting hole is a key technology of grouting engineering, and the grouting effect is directly influenced. The existing hole sealing technology mainly comprises two categories of hole sealing devices and hole sealing grouting materials, wherein the hole sealing devices comprise two categories of hole sealing devices consisting of high-pressure rubber expansion rubber pipes, safety valves, quick connectors and the like and two-blocking one-injection bag type grouting hole sealing devices (CN201721649952.6, CN201721698524.8 and CN201711294128.3), the construction processes of the hole sealing devices and the bag type grouting hole sealing devices are complex, the former is expensive, the hole sealing devices are under-pressure operation risks during insertion and recovery, the latter uses bags with high water permeability, the material performance between the two bags can be reduced under the action of water, and further, the hole sealing effect is reduced. The hole sealing grouting material comprises a resin anchoring agent, a polyurethane material, cement paste, a cement blending additive (CN201310606736.9), fine coal ash (201410051169.X) and the like, and when the hole sealing grouting material is used for hole sealing, the time consumption is long, a large amount of materials are consumed during deep hole grouting, the operation is inconvenient, and the sealing effect is poor due to the fact that the materials have failure risks due to the erosion effect of water in the grout.
In conclusion, the hole sealing technology of the grouting engineering is of great importance, but the existing hole sealing device is expensive and risky to operate; the water permeability of the bag-type hole packer is strong, and materials among the bags are easy to lose effectiveness when meeting water; the hole sealing grouting material has long time consumption, high cost, slow construction and easy failure, so the prior art has certain defects.
SUMMERY OF THE UTILITY MODEL
In order to solve the not enough of the hole sealing problem among the soft rock slip casting technology among the prior art, the utility model aims at providing a simple structure, preparation construction convenience, economic cost low, the good hole sealing structure of construction effect, the hole sealing position can be adjusted in a flexible way, and hole sealing structure parameter can be revised according to engineering practice result dynamic feedback.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
the utility model provides a slip casting pipe welding keeps off ring hole sealing structure, includes the slip casting pipe, and the slip casting pipe is hollow structure, has seted up a plurality of grout outlets on the anterior segment of slip casting pipe, is provided with on the back end of slip casting pipe and keeps off the ring, and the front side that keeps off the ring is provided with the toper of suit on the slip casting pipe and ends the thick liquid stopper.
The utility model discloses further improvement lies in, keeps off the ring and is the annular to the welding is on the slip casting pipe.
The utility model discloses further improvement lies in, is provided with the rubber cock body on the thick liquid stopper is stopped to the toper.
The utility model discloses a further improvement lies in, and the rubber buffer body ends the awl end of thick liquid stopper with the toper and has the certain distance.
The utility model discloses further improvement lies in, when the slip casting pipe stretches into the slip casting downthehole of country rock, the awl end and the slip casting downthehole wall of thick liquid stopper contact are only stopped to the toper.
The utility model discloses further improvement lies in, the rubber buffer body is the annular, and the outer wall and the slip casting downthehole wall of rubber buffer body contact.
The utility model discloses further improvement lies in, the awl end and the fender ring contact of thick liquid stopper are only stopped to the toper.
The utility model discloses a further improvement lies in, and the material that the thick liquid stopper is only stopped to the toper is rubber.
The utility model discloses further improvement lies in, keeps off the ring the same with the material of slip casting pipe.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1) the utility model discloses a set up on the slip casting pipe and keep off ring and toper and only starch the stopper, when the slip casting pipe stretches into the slip casting of country rock downthehole, can the toper only starch the stopper and block the thick liquid, the utility model discloses simple structure, the preparation is convenient, and intensity is high, can bear great thick liquid pressure, and the slip casting hole leakproofness is good, can not leak thick liquid.
2) The hole sealing position can be flexibly adjusted, the hole sealing can be carried out on shallow hole grouting and deep hole grouting by adjusting the position of the retaining ring, and the method has the advantages of simple construction process, controllable hole sealing depth and the like.
3) The tight grouting structure formed by the grouting baffle ring and the grout stopping plug has good sealing performance, the grouting effect can be ensured, and the hole sealing structure parameters can be dynamically fed back and corrected according to the engineering practice result.
Furthermore, the welding process can be completed on a coal mine, is not limited by construction environments such as narrow space under the coal mine, shortens the grouting process flow time, and improves the grouting speed.
Furthermore, the material of the baffle ring is the same as that of the grouting pipe, so that the material is easy to obtain and low in cost.
Drawings
FIG. 1 is a schematic diagram of the grouting pipe welding baffle ring hole sealing structure and the hole sealing method for grouting and reinforcing weak surrounding rock.
Fig. 2 is the sealing structure of the retaining ring for the grouting pipe.
Fig. 3 is a side view of the sealing structure of the grouting pipe welding baffle ring.
Fig. 4 is a schematic structural view of the conical grout stop plug of the present invention.
FIG. 5 is a side view of the tapered grout stop plug structure of the present invention
In the figure: 1-surrounding rock; 2-grouting holes; 3-grouting pipe; 4-slurry outlet; 5-a baffle ring; 6-conical grout stop plug; 7-rubber plug body.
Detailed Description
The invention will be further elucidated with reference to the drawings and specific embodiments, it being understood that these examples are intended to illustrate the invention only and are not intended to limit the scope of the invention, and that modifications to the various equivalent forms of the invention, which may occur to those skilled in the art after reading the present invention, fall within the scope of the invention as defined in the claims appended hereto.
As shown in fig. 1 to 5, a sealing structure for a grouting pipe welding baffle ring comprises:
a. the grouting pipe 3 is a rigid hollow pipe, the front section of the grouting pipe 3 is provided with a grout outlet 4 called a perforated pipe, the rear section of the grouting pipe 3 is not perforated to be a solid pipe, the grouting pipe 3 extends into the grouting hole 2 pre-drilled on the surrounding rock 1, and the grouting pipe 3 is connected with an external grouting pipe 3 through an external port to perform grouting operation.
b. And welding a baffle ring 5, namely welding the baffle ring 5 on the rear section, namely a solid pipe section, of the grouting pipe 3 by using an electric welding process, wherein the baffle ring is annular and rigid, and steel with the same type as that of the grouting pipe 3 is used.
c. The grout stopping plug 6 is made of rubber and flexible, is sleeved on the grouting pipe 3 and is in close contact with the baffle ring 5 to play a role in sealing and block the backflow of grouting grout.
Further, the length of the flower pipe section of the grouting pipe 3 is 80-120 cm, and the length can be increased or decreased according to the grouting effect feedback of the actual engineering geological conditions.
Further, the thickness of the welding ring-shaped baffle ring 5 is 3-7 mm, the ring width is 4-6 mm, the specific ring width is determined according to the diameter matching result of the grouting pipe 3 and the grouting hole 2, and the sum of the outer diameter of the grouting pipe 3 and the ring width is smaller than the aperture of the grouting hole 2 by 0.5-1 mm.
Furthermore, the annular baffle ring 5 is welded on the solid pipe section of the grouting pipe 3, is 0.6-3 m away from the outer end of the grouting pipe 3, and can be flexibly adjusted according to the grouting requirement of deep and shallow holes and the grouting feedback effect.
Further, the grout stop plug 6 is conical, 8-12cm in length, the inner diameter of the grout stop plug is the same as the outer diameter of the grouting pipe 3, the conical bottom of the grout stop plug is in close contact with the welding baffle ring 5, the thickness of the grout stop plug is 4.5-7 mm, the specific thickness of the grout stop plug is determined according to the diameter matching result of the grouting pipe 3 and the grouting hole 2, and the sum of the outer diameter of the grouting pipe 3 and the thickness of the conical bottom of the grout stop plug is equal to the aperture of the grouting hole 2; the thickness of the conical head is 0.5-1 mm; and a circular rubber plug body 7 made of the same material is added on the outer diameter of the cone at a position 1-3 cm away from the bottom of the cone, the sum of the width of the circular rubber plug body 7 and the outer diameter of the conical plug at the position is equal to the thickness of the bottom of the conical plug, and the thickness is 1-3 mm.
A method for sealing holes of a stop ring welded by a grouting pipe utilizes a structure for sealing holes of the stop ring welded by the grouting pipe, and comprises the following specific implementation steps:
a. and welding the grouting baffle ring 5, and welding the grouting baffle ring 5 and the grouting pipe 3 into a whole by using a welding process.
b. Drilling a grouting hole 2, and drilling a rock body by using a drilling machine to form the grouting hole;
c. cleaning the hole, namely cleaning rock debris falling in the hole when the drilling machine drills the grouting hole 2;
d. sleeving a grout stop plug 6 on the grouting pipe, and enabling the bottom of the grout stop plug to be in close contact with the welding baffle ring 5;
e. and (3) installing a grouting pipe 3, welding a baffle ring 5 and a grout stop plug 6 structure, inserting the grouting pipe into the drilled hole, and stopping after the grouting pipe 3 is exposed for 20-40 cm.
f. The outer port of the grouting pipe 3 is connected with an external grouting pipe to start grouting.
Example 1
In a high-stress argillaceous soft rock roadway of a certain coal mine, the width × is 4.7 × 3.9.9 m, the wall rock 1 is easy to soften when meeting water, in order to control the great deformation of the roadway rheology, grouting is performed by using a grouting pipe for reinforcement, and a grouting pipe welding baffle ring hole sealing structure and a hole sealing method are used for sealing holes, and the method specifically comprises the following steps:
the length of a grouting pipe 3 adopted by shallow hole lagging grouting is 2.5m, the depth of a grouting hole is 2m and 3m, the aperture is 42mm, the row spacing is 1.8m, the full section of a roof is 7 holes, the hole sealing depth is 0.8m, the grouting pressure is 2MPa, 425 cement of silicate cement slurry is injected, and the water cement ratio is 1.
The length of a grouting pipe 3 adopted by deep hole lagging grouting is 6.5m, the depth of a grouting hole is 2m, the aperture is 42mm, the row spacing is 1.8m, the full section of a roof is 4 holes, the hole sealing depth is 2.5m, the grouting pressure is 5MPa, and nano-slurry silica sol is injected.
The field application shows that the construction is convenient during grouting operation, the hole sealing effect is good, and the slurry leakage phenomenon does not occur.
The utility model is suitable for a soft rock slip casting engineering for the injected hole leakproofness is good, can not leak thick liquid, has the material and conveniently acquires, advantage such as with low costs, construction simple process, the hole sealing degree of depth is controllable.
Claims (9)
1. The utility model provides a slip casting pipe welding keeps off ring hole sealing structure, its characterized in that, includes slip casting pipe (3), and slip casting pipe (3) are hollow structure, have seted up a plurality of grout outlets (4) on the anterior segment of slip casting pipe (3), are provided with on the back end of slip casting pipe (3) and keep off ring (5), and the front side of keeping off ring (5) is provided with the toper only thick liquid stopper (6) that the suit is used for stopping the thick liquid on slip casting pipe (3).
2. The sealing structure for the baffle ring for the welding of the grouting pipe according to claim 1, characterized in that the baffle ring (5) is annular and is welded on the grouting pipe (3).
3. The sealing structure of the grouting pipe welding baffle ring according to claim 1, characterized in that a rubber plug body (7) is arranged on the conical grout stop plug (6).
4. The sealing structure of the retaining ring for the welding of the grouting pipe according to claim 3, characterized in that the rubber plug body (7) is at a certain distance from the conical bottom of the conical grout stop plug (6).
5. The sealing structure of the grouting pipe welding baffle ring according to claim 3, characterized in that when the grouting pipe (3) extends into the grouting hole (2) of the surrounding rock (1), the conical bottom of the conical grout stop plug (6) is in contact with the inner wall of the grouting hole (2).
6. The sealing structure of the grouting pipe welding baffle ring according to claim 5, characterized in that the rubber plug body (7) is annular, and the outer wall of the rubber plug body (7) is in contact with the inner wall of the grouting hole (2).
7. The sealing structure of the grouting pipe welding baffle ring according to claim 1, characterized in that the conical bottom of the conical slurry stop plug (6) is in contact with the baffle ring (5).
8. The sealing structure of the grouting pipe welding baffle ring according to claim 1, characterized in that the conical grout stop plug (6) is made of rubber.
9. The sealing structure for the baffle ring of the grouting pipe welding as claimed in claim 1, wherein the baffle ring (5) and the grouting pipe (3) are made of the same material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922186946.2U CN211174047U (en) | 2019-12-09 | 2019-12-09 | Sealing structure of grouting pipe welding baffle ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922186946.2U CN211174047U (en) | 2019-12-09 | 2019-12-09 | Sealing structure of grouting pipe welding baffle ring |
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| CN211174047U true CN211174047U (en) | 2020-08-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960715A (en) * | 2022-06-09 | 2022-08-30 | 浙江东南网架股份有限公司 | Underground engineering surge treatment device and control method |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960715A (en) * | 2022-06-09 | 2022-08-30 | 浙江东南网架股份有限公司 | Underground engineering surge treatment device and control method |
| CN114960715B (en) * | 2022-06-09 | 2024-03-01 | 浙江东南网架股份有限公司 | Underground engineering surge treatment device and control method |
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