CN101956560B - Stop-grouting plug safety separation device for subvertical ground pre-grouting engineering - Google Patents
Stop-grouting plug safety separation device for subvertical ground pre-grouting engineering Download PDFInfo
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- CN101956560B CN101956560B CN 200910159365 CN200910159365A CN101956560B CN 101956560 B CN101956560 B CN 101956560B CN 200910159365 CN200910159365 CN 200910159365 CN 200910159365 A CN200910159365 A CN 200910159365A CN 101956560 B CN101956560 B CN 101956560B
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- grouting
- stop
- grouting plug
- plug
- inner core
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Abstract
The invention relates to a stop-grouting plug safety separation device for subvertical ground pre-grouting engineering, and belongs to the field of special shaft sinking of mines. When a grouting drill hole meets a broken stratum and a grouting pipe of which the length is equal to the height of a grouting section is needed to be connected to the lower end of a stop-grouting plug so as to ensure the grouting quality, the stop-grouting plug safety separation device is arranged between the stop-grouting plug and the grouting pipe on the lower part of the stop-grouting plug and is used for separating the stop-grouting plug from the drill hole after grouting. The principle of the stop-grouting plug safety separation device is shown as the abstract attached drawing: during the grouting, an inner core pipe (1) is connected with a grouting pipeline, and an outer pipe (4) is connected with a lower core pipe of the stop-grouting plug; and after the grouting, the connection between an upper corepipe and the lower core pipe of the stop-grouting plug is released by rotating the stop-grouting plug, so that the upper core pipe of the stop-grouting plug impacts the lower core pipe of the stop-grouting plug downwards to drive the outer pipe (4) to cut off a safety pin (2), and when the outer pipe (4) and a pin shaft (5) move downwards while rotating under the guidance of a spiral groove on an outer cylindrical surface of the inner core pipe (1) to reach the lower part of the inner core pipe (1), the stop-grouting plug and a drill stem on the upper part of the stop-grouting plug can be released from the drill hole.
Description
Technical field: the invention belongs to the special sinking shaft field, mine in the underground construction.
Background technology: Pit Ground Pre-grouting, before pit shaft is dug, around pit shaft, creep into some injected holes from ground, to the crack water-bearing stratum, then the slurries that prepare with pump by feed pipe for mortar and Grouting Pipe, be injected into water blockoff in the water-bearing stratum of crack, reach on inspection the water shutoff purpose after, carry out again the job practices that pit shaft pick is built.
When the slip casting degree of depth is larger, should adopt segmenting slip casting by slip casting effect for slurries being spread equably and guaranteeing in each aquifer.
Stop grouting plug (packer, packer) is to realize segmenting slip casting, and reasonable use is annotated pressure and effectively controlled and starch emerging distribution, guarantees the visual plant of grouting quality.What mainly use in the pre grouting from the surface engineering at present is the slip-type stop grouting plug, its principle is that the slip-type stop grouting plug is in injected hole, make seal (plug) produce lateral expansion by mechanical pressure, with the hole wall jam-packed, injected hole is divided into two sections, in order to during hypomere slip casting slurries are pressed in the water-bearing stratum of crack, and unlikelyly return to epimere from the plug sealing, guarantee normally to carry out segmenting slip casting.
When inlet well runs into broken formation, injected hole section under the stop grouting plug is owing to be subject to stratum the burying of hole of collapsing, be difficult to reach the section high request of design, for guarantee slip casting the section high, can connect and the high isometric Grouting Pipe of slip casting section in the lower end of stop grouting plug, guarantee quality, the effect of section high and grouting for water blocking of slip casting.But connect the method that grouting pipeline guarantees slip casting section quality under the employing stop grouting plug, after this section slip casting is finished, if breathe out there is not special device between the Grouting Pipe at stop grouting plug, then just can not untie stop grouting plug, stop grouting plug and top rod are proposed injected hole, thus the drilling accident of causing.
Summary of the invention: essence of the present invention is, design a kind of stop grouting plug safety disengaging device, this device is comprised of inner core tube, safety pin, O RunddichtringO and outer tube, the axial straight trough that is milled with helicla flute on the external cylindrical surface of inner core tube and links up with helicla flute, be equipped with on the inner cylinder face of outer tube can transmit draw, the bearing pin of pressure and moment of torsion, when not being subjected to External Force Acting, this device can transmitting torque and draw, pressure, endoporus can pass through high-pressure fluid.When running into broken formation slip casting, this device is installed between stop grouting plug and the stop grouting plug bottom Grouting Pipe, after finishing this section slip casting, make the drilling rod safe escape boring on stop grouting plug and stop grouting plug top, guarantee carrying out smoothly of vertical pre grouting from the surface engineering.
Description of drawings: basic principle of the present invention is shown in Figure of description.
This device is by inner core tube (1), safety pin (2), and O RunddichtringO (3), outer tube (4) and bearing pin (5) form.Wherein be milled with helicla flute on the external cylindrical surface of inner core tube (1), and axial straight trough, can link up between helicla flute and the straight trough, bearing pin (5) can move to straight trough from the spiral fluted top, and deviate from straight groove top.
The specific embodiment: during work, inner core tube (1) links to each other by tapered thread with the grouting pipeline that satisfies slip casting section high request downwards, the core pipe is threaded connection under the stop grouting plug on outer tube (4) and top, lower in the injected hole that needs slip casting in the drive of stop grouting plug top rod, then stop grouting plug is setting, begin normal slip casting, slurries are by endoporus, stop grouting plug endoporus, the endoporus of this device and the grouting pipeline of bottom of stop grouting plug top rod, arrival is subjected to the orifice section, realizes normal slip casting.
After slip casting is finished, by rotation stop grouting plug top rod, open upper on the stop grouting plug, left hand thread interface between the lower core pipe, throw off the upper of stop grouting plug, connection between the lower core pipe, spur upwards by the stop grouting plug top rod that then the core pipe impacts core pipe under the stop grouting plug downwards on the stop grouting plug, outer tube (4) under the stop grouting plug on the moving stop grouting plug safety disengaging device of core pipe racks cuts off safety pin (2), then outer tube (4) and bearing pin (5) are under the guiding of the spiral fluted on the external cylindrical surface of inner core tube (1), the limit moves down, the limit rotation, when the helicla flute bottom on the external cylindrical surface of outer tube (4) and bearing pin (5) arrival inner core tube (1), on carry the drilling rod that is connected with stop grouting plug top, just can be with stop grouting plug, the stop grouting plug top rod is deviate from from boring smoothly.
Claims (2)
1. stop grouting plug safety disengaging device that is used for vertical pre grouting from the surface engineering, it is characterized in that: this device is comprised of inner core tube, safety pin, O RunddichtringO and outer tube, the axial straight trough that is milled with helicla flute on the external cylindrical surface of inner core tube and links up with helicla flute, be equipped with on the inner cylinder face of outer tube can transmit draw, the bearing pin of pressure and moment of torsion, bearing pin can move to straight trough from the spiral fluted top, and deviate from straight groove top; When not being subjected to External Force Acting, this device can transmitting torque and draw, pressure, endoporus can pass through high-pressure fluid.
2. the device shown in claim 1, it is characterized in that, do the time spent when being subject to axial impact force, safety pin is cut off, outside under the guiding of barrel bolt axle, inner core tube helicla flute and straight trough, outer tube and inner core tube are done moving axially and relative rotary motion in opposite directions, when move axially in opposite directions finish after, under the pulling force effect, outer tube can break away from inner core tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910159365 CN101956560B (en) | 2009-07-11 | 2009-07-11 | Stop-grouting plug safety separation device for subvertical ground pre-grouting engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910159365 CN101956560B (en) | 2009-07-11 | 2009-07-11 | Stop-grouting plug safety separation device for subvertical ground pre-grouting engineering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101956560A CN101956560A (en) | 2011-01-26 |
| CN101956560B true CN101956560B (en) | 2013-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910159365 Expired - Fee Related CN101956560B (en) | 2009-07-11 | 2009-07-11 | Stop-grouting plug safety separation device for subvertical ground pre-grouting engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101956560B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727515B (en) * | 2021-01-14 | 2024-09-27 | 陕西陕煤曹家滩矿业有限公司 | Quick anchoring agent loading, stirring and filling integrated device and use method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2065667U (en) * | 1990-05-16 | 1990-11-14 | 山东矿业学院 | Grouting anchoring-bolt and return-stop valve |
| EP0532441A1 (en) * | 1991-09-12 | 1993-03-17 | Techniport S.A. | Method for consolidating tunnel walls, gallery walls, or the like, anchoring bolt for carrying out the method, and method for making such anchoring bolts |
| DE29707502U1 (en) * | 1997-04-25 | 1997-06-19 | Gebr. Van Leeuwen Harmelen B.V., Harmelen | Screw injection anchor |
| CN2367770Y (en) * | 1999-05-17 | 2000-03-08 | 李晓峰 | Return-type air-dischargeable anchor-rod slip-casting joint |
| CN2608687Y (en) * | 2003-03-20 | 2004-03-31 | 付庆福 | Self drilling type rock prestressed grouting anchor |
| CN101260672A (en) * | 2008-03-27 | 2008-09-10 | 中南大学 | Weak surface rock slope grouting method and anchor tube for grouting |
-
2009
- 2009-07-11 CN CN 200910159365 patent/CN101956560B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2065667U (en) * | 1990-05-16 | 1990-11-14 | 山东矿业学院 | Grouting anchoring-bolt and return-stop valve |
| EP0532441A1 (en) * | 1991-09-12 | 1993-03-17 | Techniport S.A. | Method for consolidating tunnel walls, gallery walls, or the like, anchoring bolt for carrying out the method, and method for making such anchoring bolts |
| DE29707502U1 (en) * | 1997-04-25 | 1997-06-19 | Gebr. Van Leeuwen Harmelen B.V., Harmelen | Screw injection anchor |
| CN2367770Y (en) * | 1999-05-17 | 2000-03-08 | 李晓峰 | Return-type air-dischargeable anchor-rod slip-casting joint |
| CN2608687Y (en) * | 2003-03-20 | 2004-03-31 | 付庆福 | Self drilling type rock prestressed grouting anchor |
| CN101260672A (en) * | 2008-03-27 | 2008-09-10 | 中南大学 | Weak surface rock slope grouting method and anchor tube for grouting |
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| Publication number | Publication date |
|---|---|
| CN101956560A (en) | 2011-01-26 |
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