CN203847093U - Observation instrument embedding and blocking system in drilling high-pressure pump-in test - Google Patents
Observation instrument embedding and blocking system in drilling high-pressure pump-in test Download PDFInfo
- Publication number
- CN203847093U CN203847093U CN201420113560.3U CN201420113560U CN203847093U CN 203847093 U CN203847093 U CN 203847093U CN 201420113560 U CN201420113560 U CN 201420113560U CN 203847093 U CN203847093 U CN 203847093U
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- China
- Prior art keywords
- test
- observation
- observation instrument
- hole
- sleeve pipe
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- Expired - Lifetime
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 41
- 230000000903 blocking effect Effects 0.000 title abstract 6
- 238000005553 drilling Methods 0.000 title abstract 4
- 239000004568 cement Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 238000002474 experimental method Methods 0.000 claims description 16
- 239000004746 geotextile Substances 0.000 claims description 13
- 239000002002 slurry Substances 0.000 claims description 13
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000011435 rock Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 239000011083 cement mortar Substances 0.000 abstract description 5
- 239000004576 sand Substances 0.000 abstract description 5
- 239000004744 fabric Substances 0.000 abstract 1
- 239000004570 mortar (masonry) Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000011440 grout Substances 0.000 description 3
- 230000003204 osmotic effect Effects 0.000 description 3
- 238000012946 outsourcing Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses an observation instrument embedding and blocking system in a drilling high-pressure pump-in test. In order to solve the problem that observation becomes invalid because an existing observation instrument in the drilling high-pressure pump-in test can very easily cause cementing of the observation instrument by cement (sand) mortar which is injected subsequently during grouting, the embedding and blocking system comprises a test observation hole, anti-leakage sections disposed inside the test observation hole and a casing passing though the anti-leakage sections, wherein end caps are installed on both the bottom and the top of the casing, an observation instrument is installed inside a lower pipe of the casing, and the observation instrument is connected to an external cable; a test chamber is formed among the casing, the bottom of the anti-leakage sections and the inner wall of the bottom of the test observation hole, and the test chamber is communicated with the casing by a water passing hole; and the anti-leakage sections comprise a cement mortar end cap, an expansion cement mortar blocking section and a geotechnical cloth section which are disposed in order from the test observation hole opening to the hole bottom. The observation instrument embedding and blocking system in the drilling high-pressure pump-in test in the utility model has the simple structure, is operated conveniently, and can effectively ensure reliability of embedding and blocking of the observation instrument.
Description
Technical field
The utility model relates to a kind of observation instrument for HIGH-PRESSURE INJECTION EXPERIMENT and buries plugging system underground, is mainly applicable to the field such as Hydraulic and Hydro-Power Engineering, oil reserve underground construction and carries out the observation instrument of rock mass original position high pressure water injection pilot system and bury plugging technology flow process underground.
Background technology
When burying shutoff underground, the observation instrument of existing HIGH-PRESSURE INJECTION EXPERIMENT mainly adopt modified cement (sand) slurry to carry out grout sealing or utilize the mechanism of dry sea-tangle water-swellable to carry out shutoff, the shortcoming of cement (sand) slurry plugging technology is to be easy to cause observation instrument to be gluedd joint by follow-up priming charge mud (sand) slurries in filling process, cause observation instrument to lose efficacy, and construction quality is difficult to ensure.And dry sea-tangle plugging effect is difficult to ensure, sea-tangle colligation radius is excessive, and SR is excessive, and instrument is difficult to accurately lay put in place, if there is water in hole, also likely causes instrument also not put in place, and sea-tangle is just expanded; Colligation radius is too small, and plugging effect is undesirable, very easily grout leaking and leaking.
Utility model content
Bury for existing HIGH-PRESSURE INJECTION EXPERIMENT observation instrument the deficiency that plugging technology exists underground, the utility model aims to provide a kind of observation instrument for HIGH-PRESSURE INJECTION EXPERIMENT and buries plugging system underground, and this plugging system can effectively ensure observation instrument installation quality.
To achieve these goals, the technical scheme that the utility model adopts is:
Observation instrument for HIGH-PRESSURE INJECTION EXPERIMENT is buried a plugging system underground, comprises the test observation hole being opened in rock mass, is arranged on the antiseepage section in test observation hole, and a sleeve pipe through described antiseepage section; Its design feature is, plug is all equipped with at the bottom of described sleeve pipe and top, in this sleeve pipe lower tube, observation instrument is housed, and this observation instrument is connected with an external cable; Between described sleeve pipe, antiseepage section bottom and test observation hole bottom interior wall, form test cavity, this test cavity is communicated with by water hole with described sleeve pipe; Cement paste plug, expansion cement slurry block section and geotextiles section that at the bottom of aperture, described antiseepage Duan Weicong test observation hole to hole, order arranges.
Thus, the utility model can be buried observation instrument segmentation separately underground, observation instrument (osmometer etc.) cable outsourcing protective casing, joint area at protective casing adopts raw material band antiseepage, cannula tip is established silently, casing wall bores quincunx hole and transmits water pressure, sleeve outer wall bag filter screen is to stop silt to enter pressure test section, adopt precision pressure gauge to be connected on the position, earth's surface of cable protecting sleeve outward, coordinate high-pressure stop valve can be easily to boosting and the osmotic pressure of buck stage is effectively observed, observation instrument shutoff adopts the plugging technology of geotextiles in conjunction with back-grouting.
Be below the technical scheme of further improvement of the utility model:
Further, between described geotextiles section and test cavity, be provided with elastic baffle.
In order to facilitate the water and air in drain sleeve, drainage exhaust switch is equipped with on described sleeve pipe top.
As a kind of concrete form of structure, the plug of described sleeve bottom be shutoff silently.
As a kind of concrete form of structure, the plug at described sleeve pipe top is epoxy resin plug.
For the pressure in Real-Time Monitoring sleeve pipe, water pressure table is equipped with on described sleeve pipe top.
For the ease of discharging in time the gas in expansion cement slurry block section, described expansion cement slurry is provided with the stack being in communication with the outside in block section.
For convenient slip casting in geotextiles section, described test observation is provided with a Grouting Pipe in hole, and the bottom of this Grouting Pipe is placed in described geotextiles section.
Operating principle of the present utility model is: be the survey data of Obtaining Accurate HIGH-PRESSURE INJECTION EXPERIMENT, need to improve observation instrument burial and construction quality and non-observation section is carried out to effective shutoff, the utility model is buried observation instrument segmentation separately underground, at observation instrument (osmometer etc.) cable outsourcing protective casing, joint area at protective casing adopts raw material band antiseepage, establish silently outsourcing protective casing end, casing wall bores quincunx hole and transmits water pressure, sleeve outer wall bag filter screen is to stop silt to enter pressure test section, adopt precision pressure gauge to be connected on the position, earth's surface of cable protecting sleeve outward, coordinate high-pressure stop valve effectively to observe the osmotic pressure of experimental stage easily, observation instrument shutoff adopts the plugging technology of geotextiles in conjunction with back-grouting.
Compared with prior art, the beneficial effects of the utility model are: the utility model can be easily and fast, effectively observation instrument is installed to design attitude; Avoid burying the destruction of process to observation instrument cable underground in installation; Stop silt to enter pressure test section; Increase the safety factor of test observation means, the osmotic pressure of each experimental stage has effectively been observed; Overcome cement (sand) slurry or dry sea-tangle plugging technology deficiency, effectively ensured plugging effect, prevented that peephole hole wall and cable top layer from forming penetrating passage and the grout leaking that causes, leak.
Below in conjunction with drawings and Examples, the utility model is further elaborated.
Brief description of the drawings
Fig. 1 is the structure principle chart of an embodiment of the utility model.
In the drawings
1-cable; 2-epoxy resin plug; 3-drainage exhaust switch; 4-threeway; 5-water pressure table; 6-Grouting Pipe; 7-stack; 8-cement mortar plug; 9-test observation hole; 10-expansion cement slurry block section; 11-sleeve pipe; 12-geotextiles section; 13-elastic baffle; 14-floral tube section; 15-water hole; 16-observation instrument; 17-shutoff silently; 18-test cavity.
Detailed description of the invention
Observation instrument for HIGH-PRESSURE INJECTION EXPERIMENT is buried a plugging system underground, as shown in Figure 1, comprises that 9 bottoms, test observation hole are stretched in one end of 9, the sleeve pipes 11 in test observation hole that are opened in rock mass, and sleeve bottom adopts and silently 17 carries out shutoff.An observation instrument (osmometer) 16 is fixed on the bottom of sleeve pipe 11, and its cable 1 reaches beyond test observation hole 9 through sleeve pipe 11, and the outside of this observation instrument (osmometer) 16 silently 17 is protected by sleeve pipe 11 and shutoff.The long floral tube section 14 of 20cm is set above in sleeve pipe 11 one end of fixed observer instrument (osmometer) 16, in this floral tube section 14, is provided with the inside and outside water hole 15 connecting, observation instrument (osmometer) 16 of inside pipe casing is communicated with test section 18 water bodys.At arranged outside one elastic baffle 13 at the above 20cm of floral tube section 14 place of sleeve pipe; preferably rubber separator; start upwards colligation geotextiles section 12 within the scope of 200cm from elastic baffle 13; thereby can effectively observation instrument (osmometer) 16 and follow-up priming charge mud be separated, play the effect of protection observation instrument (osmometer) 16.One Grouting Pipe 6 is also installed in test observation hole 9, and this Grouting Pipe 6 extend into geotextiles section 12 places.The geotextiles section in test observation hole 9 more than 12 is injected micro-expansion cement slurry formation expansion cement slurry block section 10 by Grouting Pipe 6 and is carried out shutoff, cement mortar plug 8 shutoff that adopt micro-expansion cement mortar to form at the aperture of distance test (DT) peephole 9 environs.The interior stack 7 that is also provided with in addition in test observation hole 9, this stack 7 extend into 10 places, expansion cement slurry block section, to get rid of the air in cement paste.Cable lead-out end in sleeve pipe 11 adopts 2 shutoff of epoxy resin plug, thereby can effectively avoid observation instrument (osmometer) cable 1 to cause damage.The aperture in test observation hole 9 is to be connected with two threeways 4 on outer tube, it connects respectively water pressure table 5 and drainage exhaust switch 3.
The content that above-described embodiment is illustrated should be understood to these embodiment only for being illustrated more clearly in the utility model, and be not used in restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims limited range to the amendment of the various equivalent form of values of the present utility model.
Claims (8)
1. bury a plugging system underground for the observation instrument of HIGH-PRESSURE INJECTION EXPERIMENT, comprise the test observation hole (9) being opened in rock mass, be arranged on the antiseepage section in test observation hole (9), and a sleeve pipe (11) through described antiseepage section; It is characterized in that, plug (2,17) is all equipped with at the bottom of described sleeve pipe (11) and top, in this sleeve pipe (11) lower tube, observation instrument (16) is housed, and this observation instrument (16) is connected with an external cable (11); Between described sleeve pipe (11), antiseepage section bottom and test observation hole (9) bottom interior wall, form test cavity (18), this test cavity (18) is communicated with by water hole (15) with described sleeve pipe (11); Cement paste plug (8), expansion cement slurry block section (10) and geotextiles section (12) that at the bottom of aperture, described antiseepage Duan Weicong test observation hole (9) to hole, order arranges.
2. the observation instrument for HIGH-PRESSURE INJECTION EXPERIMENT according to claim 1 is buried plugging system underground, it is characterized in that, between described geotextiles section (12) and test cavity (18), is provided with elastic baffle (13).
3. the observation instrument for HIGH-PRESSURE INJECTION EXPERIMENT according to claim 1 is buried plugging system underground, it is characterized in that, drainage exhaust switch (3) is equipped with on described sleeve pipe (11) top.
4. the observation instrument for HIGH-PRESSURE INJECTION EXPERIMENT according to claim 1 is buried plugging system underground, it is characterized in that, the plug of described sleeve pipe (11) bottom is silently (17) of shutoff.
5. the observation instrument for HIGH-PRESSURE INJECTION EXPERIMENT according to claim 1 is buried plugging system underground, it is characterized in that, the plug at described sleeve pipe (11) top is epoxy resin plug (2).
6. the observation instrument for HIGH-PRESSURE INJECTION EXPERIMENT according to claim 1 is buried plugging system underground, it is characterized in that, water pressure table (5) is equipped with on described sleeve pipe (11) top.
7. the observation instrument for HIGH-PRESSURE INJECTION EXPERIMENT according to claim 1 is buried plugging system underground, it is characterized in that, is provided with the stack (7) being in communication with the outside in described expansion cement slurry block section (10).
8. the observation instrument for HIGH-PRESSURE INJECTION EXPERIMENT according to claim 1 is buried plugging system underground, it is characterized in that, one Grouting Pipe (6) is installed in described test observation hole (9), and the bottom of this Grouting Pipe (6) is placed in described geotextiles section (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113560.3U CN203847093U (en) | 2014-03-13 | 2014-03-13 | Observation instrument embedding and blocking system in drilling high-pressure pump-in test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113560.3U CN203847093U (en) | 2014-03-13 | 2014-03-13 | Observation instrument embedding and blocking system in drilling high-pressure pump-in test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847093U true CN203847093U (en) | 2014-09-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420113560.3U Expired - Lifetime CN203847093U (en) | 2014-03-13 | 2014-03-13 | Observation instrument embedding and blocking system in drilling high-pressure pump-in test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847093U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821498A (en) * | 2014-03-13 | 2014-05-28 | 中国水电顾问集团中南勘测设计研究院有限公司 | Observation instrument embedded blockage system for drilling hole high-pressure packer test |
| CN104359599A (en) * | 2014-11-03 | 2015-02-18 | 江西理工大学 | Photoelastic stress meter mounting and guiding device |
| CN105547721A (en) * | 2015-12-09 | 2016-05-04 | 山东科技大学 | Double-end blocking and leakage detection integrated observation method |
-
2014
- 2014-03-13 CN CN201420113560.3U patent/CN203847093U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821498A (en) * | 2014-03-13 | 2014-05-28 | 中国水电顾问集团中南勘测设计研究院有限公司 | Observation instrument embedded blockage system for drilling hole high-pressure packer test |
| CN104359599A (en) * | 2014-11-03 | 2015-02-18 | 江西理工大学 | Photoelastic stress meter mounting and guiding device |
| CN105547721A (en) * | 2015-12-09 | 2016-05-04 | 山东科技大学 | Double-end blocking and leakage detection integrated observation method |
| CN105547721B (en) * | 2015-12-09 | 2017-09-15 | 山东科技大学 | Double-end sealing leak detection integration observation procedure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140924 |