CN106639962B - Secondary hole sealing pressure measuring device based on expanding agent - Google Patents
Secondary hole sealing pressure measuring device based on expanding agent Download PDFInfo
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- CN106639962B CN106639962B CN201610911800.8A CN201610911800A CN106639962B CN 106639962 B CN106639962 B CN 106639962B CN 201610911800 A CN201610911800 A CN 201610911800A CN 106639962 B CN106639962 B CN 106639962B
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- pressure
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- hole sealing
- water
- grouting
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- 238000007789 sealing Methods 0.000 title claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 73
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 34
- 238000002347 injection Methods 0.000 claims description 34
- 239000007924 injection Substances 0.000 claims description 34
- 239000003245 coal Substances 0.000 claims description 5
- 238000009530 blood pressure measurement Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims description 2
- 239000002775 capsule Substances 0.000 abstract description 8
- 239000002002 slurry Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000011435 rock Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A secondary hole sealing pressure measuring device based on an expanding agent adopts a high-pressure independent water bag, and water is injected to bear pressure during hole sealing. When the equipment is disassembled, the water is prevented from being released, and the equipment can be recovered. The two ends of the high-pressure independent expansion capsule are folded and matched with the limiting chains and the limiting plates to carry out two-end hole sealing, the disposable two-end hole sealing of the independent annular grouting cavity is formed and fixed, after slurry is poured to carry out primary hole sealing, water is injected into the high-pressure expansion capsule, an expanding agent expands when meeting water, the hole sealing effect at the two ends of the device is further improved, the high-pressure independent expansion capsule deforms in the vertical axial direction, the stress of secondary hole sealing of the slurry is provided, the slurry is pressed into surrounding rock cracks, and secondary hole sealing is completed.
Description
The technical field is as follows:
the invention relates to a secondary hole sealing pressure measuring device based on an expanding agent, in particular to a hole sealing pressure measuring device for secondary hole sealing and drilling through expansion pressure application
Background art:
currently, coal and gas outburst is an important factor threatening the safe production of mines. Gas pressure measurement is widely used as an important method for determining coal mine outburst. However, most of the existing capsule type hole sealing pressure measuring devices are disposable devices and the secondary hole sealing effect is not good. In order to reduce the cost and improve the accuracy of the measured data, it is urgently needed to design a hole sealing pressure measuring device which can be repeatedly used and has good hole sealing effect and simple operation.
The invention content is as follows:
under the condition of overcoming the problems of the technical background, the invention designs a set of pressure measuring and hole sealing device which can be repeatedly used, has good secondary hole sealing effect and is convenient to operate.
The invention comprises the following technical scheme:
a secondary hole sealing pressure measuring device based on an expanding agent is composed of a measuring device, a pressure bearing device, an expanding device and a grouting device; wherein the measuring device consists of an air inlet perforated pipe 1, an independent conduit 2 and a pressure gauge 3; the pressure-bearing device consists of a high-pressure independent water bag 4, a water injection conduit 5 and a water injection pump 6; the expansion device consists of a high-pressure independent expansion bag 7, a water injection pipe 8, an expanding agent filling pipe 9, a limiting chain 10, a limiting plate 11 and an expanding agent; the grouting device is composed of a grouting pump 12, a grouting guide pipe 13 and a grouting cavity 14. The air inlet perforated pipe 1 at the front end of the measuring device is connected with an independent conduit 2, both the two conduits are steel conduits, and a pressure gauge 3 is arranged behind the independent conduit 2. The high-pressure independent water sac 4 of the pressure-bearing device is sleeved and fixed on the independent conduit 2, and a gap between the two is sealed. The water injection conduit 5 is connected with the outer side of the high-pressure independent water bag 4 and is connected with the water injection pump 6. The high-pressure independent expansion bag 7 of the expansion device is sleeved on the high-pressure independent water bag 4 and fixed, the outer edge of the high-pressure independent expansion bag 7 is integrally turned over and is limited and fixed by a limiting chain 10 and a limiting plate 11 at the edge, the limiting chain 10 surrounds the high-pressure independent expansion bag 7 and is arranged in a plurality of ways, and the limiting plates 11 are arranged at the edges of two sides of the independent conduit 2 and are directly welded on the independent conduit 2. The wall of the water injection pipe 8 is provided with water drainage holes, and the water injection pipe 8 is internally divided into four pipes which are respectively arranged at four positions of the upper part, the lower part, the left part and the right part inside the high-pressure independent expansion bag 7. The water injection pipe 8 is connected with the water injection pump 6, the expanding agent filling pipe 9 is connected with the outer side of the high-pressure independent expansion bag 7, and the expanding agent is a special low-heat and high-expansion agent. A grouting guide pipe 13 of the grouting device enters from the outer side of the high-pressure independent expansion bag 7 and is led out from a position right opposite to a grouting cavity 14 enclosed by the high-pressure independent expansion bag 7. All the joints of the tubes and the bags are provided with sealing devices for sealing. The grouting pipe 13 is connected to the grouting pump 6.
Compared with the prior art, the high-pressure independent water bag has the advantages that water is injected to bear pressure when hole sealing is carried out. When the equipment is disassembled, water is discharged to release pressure, and the equipment can be recovered. The two ends of the high-pressure independent expansion capsule are folded and partially matched with the limiting chains and the limiting plates to carry out hole sealing at the two ends, a disposable two-end hole sealing mode of the independent annular grouting cavity is formed and fixed, after slurry is filled for carrying out primary hole sealing, water is filled into the high-pressure independent expansion capsule, an expanding agent expands when meeting water, the hole sealing effect at the two ends of the device is further improved, the high-pressure independent expansion capsule deforms in the vertical axial direction, the stress of secondary hole sealing of the slurry is provided, the slurry is pressed into surrounding rock cracks, and secondary hole sealing is completed.
Description of the drawings:
FIG. 1 is a schematic of the present invention.
FIG. 2 isbase:Sub>A cross-sectional view A-A of the present invention
FIG. 3 is a cross-sectional view of the invention B-B
The reference numerals in the figures have the following meanings: the device comprises an air inlet perforated pipe 1, an independent guide pipe 2, a pressure gauge 3, a high-pressure independent water bag 4, a water injection guide pipe 5, a water injection pump 6, a high-pressure independent expansion bag 7, a water injection pipe 8, an expanding agent filling pipe 9, a limiting chain 10, a limiting plate 11, a grouting pump 12, a grouting guide pipe 13, a grouting cavity 14, a coal body 15 and an expanding agent 16.
The specific implementation mode is as follows:
the invention is described in detail below with reference to the following figures and examples:
a secondary hole sealing pressure measuring device based on an expanding agent is shown in attached figures 1-3 and comprises an air inlet perforated pipe 1, an independent guide pipe 2, a pressure gauge 3, a high-pressure independent water bag 4, a water injection guide pipe 5, a water injection pump 6, a high-pressure independent expansion bag 7, a water injection pipe 8, an expanding agent filling pipe 9, a limiting chain 10, a limiting plate 11, a grouting pump 12, a grouting guide pipe 13 and a grouting cavity 14.
Hole sealing pressure measurement of a secondary hole sealing pressure measurement device based on an expanding agent: the method comprises the following steps: (1) The air inlet perforated pipe 1 is connected with an independent conduit 2, both of which are steel conduits, and the independent conduit 2 is provided with a pressure gauge 3. The high-pressure independent water sac 4 is sleeved and fixed on the independent conduit 2 and seals the gap between the two. The water injection conduit 5 is connected with the outer side of the high-pressure independent water bag 4 and is connected with the water injection pump 6. The high-pressure independent expansion bag 7 is sleeved on the high-pressure independent water bag 4 and fixed, the length outer edge of the high-pressure independent expansion bag 7 is integrally turned outwards, the edge is limited and fixed by a limiting chain 10 and a limiting plate 11, the limiting chain 10 surrounds the high-pressure independent expansion bag 7 and is arranged in a plurality of ways, and the limiting plates 11 are arranged on the edges of two sides of the independent catheter 2 and are directly welded on the independent catheter 2. The wall of the water injection pipe 8 is provided with water drainage holes, and the water injection pipe 8 is internally divided into four pipes which are respectively arranged at four positions of the upper part, the lower part, the left part and the right part inside the high-pressure independent expansion bag 7. The water injection pipe 8 is connected with a water injection pump 12, the expanding agent filling pipe 9 is connected with the outer side of the high-pressure independent expansion bag 7, and the expanding agent is a special low-heat and high-expansion agent. The grouting guide pipe 13 enters from the outer side of the high-pressure independent expansion bag 7 and is led out from a position opposite to a grouting cavity 14 enclosed by the high-pressure independent expansion bag 7. All the joints of the tubes and the bags are provided with sealing devices for sealing. The grouting pipe 13 is connected to the grouting pump 12. (2) After drilling, a proper amount of expanding agent is added to the high-pressure independent expansion bladder 7 through the expanding agent filling pipe 9 and is uniformly distributed. (3) The entire device is placed into the borehole and the entire capsule is advanced a distance into the borehole. (4) And (3) opening the water injection pump 6, and injecting water into the high-pressure independent water bag 4, so that the turnover parts at the two ends of the high-pressure independent expansion bag 7 preliminarily seal holes of the drilled holes, and the middle part and the coal wall form a closed annular grouting cavity. (5) And opening the grouting pump 12, and grouting the grouting cavity 14 to form first complete hole sealing. (6) After the extraction is carried out for a period of time, when the concentration of the extracted gas is obviously reduced, water is injected into the water injection pipe 8, and after the water is injected, the valve is closed. The expanding agent expands and extrudes the yellow mud to complete secondary hole sealing.
The secondary hole sealing of the gas extraction can be realized by injecting water into the high-pressure independent water bag 4 to expand the whole high-pressure independent expansion bag 7 and extrude the injected yellow mud.
Before the high-pressure independent expansion bag 7 is placed into a drill hole, a certain amount of expansion agent needs to be uniformly filled, and the integral outward-turning part of the outer edge of the high-pressure independent expansion bag 7 needs to be filled with the expansion agent. The preliminary hole sealing can be realized by utilizing the structural characteristics of the sealing device.
The method provides a yellow mud perfusion space for preliminary hole sealing by injecting water into the high-pressure independent water bag 4 to expand the hole sealing body.
Claims (5)
1. The utility model provides a secondary hole sealing pressure measurement device based on expanding agent which characterized in that: the device consists of a measuring device, a pressure-bearing device, an expansion device and a grouting device; wherein the measuring device consists of an air inlet perforated pipe, an independent conduit and a pressure gauge; the pressure-bearing device consists of a high-pressure independent water bag, a water injection conduit and a water injection pump; the expansion device consists of a high-pressure independent expansion bag, a water injection pipe, an expansion agent filling pipe, a limiting chain, a limiting plate and an expansion agent; the grouting device consists of a grouting pump, grouting guide pipes and a grouting cavity; the air inlet perforated pipe at the front end of the measuring device is connected with an independent guide pipe, the air inlet perforated pipe at the front end of the measuring device and the independent guide pipe are both steel guide pipes, and a pressure gauge is installed behind the independent guide pipe; the high-pressure independent water bag of the pressure-bearing device is sleeved and fixed on the independent conduit, and a gap between the high-pressure independent water bag and the independent conduit is sealed; the water injection conduit is connected with the outer side of the high-pressure independent water bag and is connected with the water injection pump; the high-pressure independent expansion bag of the expansion device is sleeved on the high-pressure independent water bag and fixed, the outer edge of the high-pressure independent expansion bag is integrally turned over, and is limited and fixed at the edge by using a limiting chain and a plurality of limiting plates, the limiting chains are arranged around the high-pressure independent expansion bag, and the limiting plates are arranged at the edges of two sides of the independent conduit and are directly welded on the independent conduit; water drainage holes are distributed on the wall of the water injection pipe, the water injection pipe is divided into four pipes inside the high-pressure independent expansion bag, and the four pipes are respectively arranged in four directions of the upper part, the lower part, the left part and the right part inside the high-pressure independent expansion bag; the water injection pipe is connected with a water injection pump, the expanding agent filling pipe is connected to the outer side of the high-pressure independent expansion bag, and the expanding agent is a low-heat high-expansion agent; a grouting guide pipe of the grouting device enters from the outer side of the high-pressure independent expansion bag and is led out from the position opposite to a grouting cavity enclosed by the high-pressure independent expansion bag; sealing devices are arranged at the joints of all the tubes and the bags for sealing; the grouting guide pipe is connected with a grouting pump.
2. The expander-based secondary hole sealing pressure measuring device according to claim 1, wherein the step of sealing the secondary hole sealing pressure measuring device comprises: after drilling, adding a proper amount of expanding agent into the high-pressure independent expansion bag through the expanding agent filling pipe, and uniformly distributing the expanding agent.
3. The expander-based secondary hole sealing pressure measuring device according to claim 2, wherein the step of sealing the secondary hole sealing pressure measuring device further comprises: the entire device is placed into the borehole and the entire bladder is forced into the borehole for a distance.
4. The expander-based secondary hole sealing pressure measuring device according to claim 3, wherein the step of sealing the secondary hole sealing pressure measuring device further comprises: and opening a water injection pump to inject water into the high-pressure independent water bag, so that the turnover parts at the two ends of the high-pressure independent expansion bag preliminarily seal the drilled holes, and the middle part and the coal wall form a closed annular grouting cavity.
5. The expander-based secondary hole sealing pressure measuring device according to claim 4, wherein the step of sealing the secondary hole sealing pressure measuring device further comprises: opening a grouting pump, and grouting the grouting cavity to form a first complete hole sealing; after the gas is extracted for a period of time, when the concentration of the extracted gas is obviously reduced, injecting water into the water injection pipe, and closing the valve after the water is injected; the expanding agent expands to extrude the yellow mud to complete secondary hole sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610911800.8A CN106639962B (en) | 2016-10-17 | 2016-10-17 | Secondary hole sealing pressure measuring device based on expanding agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610911800.8A CN106639962B (en) | 2016-10-17 | 2016-10-17 | Secondary hole sealing pressure measuring device based on expanding agent |
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| Publication Number | Publication Date |
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| CN106639962A CN106639962A (en) | 2017-05-10 |
| CN106639962B true CN106639962B (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610911800.8A Active CN106639962B (en) | 2016-10-17 | 2016-10-17 | Secondary hole sealing pressure measuring device based on expanding agent |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503740A (en) * | 2017-10-09 | 2017-12-22 | 开滦(集团)有限责任公司技术中心 | Mechanical swelling type hole-sealing pressure measuring device and pressure testing method |
| CN108775233B (en) * | 2018-05-04 | 2020-06-09 | 中国矿业大学 | Deep hole is not hard up blasting water injection integration hole sealing device in pit |
| CN115853461A (en) * | 2023-02-22 | 2023-03-28 | 中煤科工集团沈阳研究院有限公司 | Hole sealing device and hole sealing method for gas extraction drill hole |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85200084U (en) * | 1985-04-01 | 1985-11-10 | 李起山 | Water seal and water pressure water case for shot hole blasting |
| CN102200024A (en) * | 2011-05-11 | 2011-09-28 | 河南理工大学 | Gas extraction center divided-flow type grouting and hole sealing device and hole sealing method |
| CN102913184A (en) * | 2012-10-26 | 2013-02-06 | 河南理工大学 | Secondary composite high-pressure grouting and sealing process of gas drainage drilling artificial separation barrier |
| CN103195388A (en) * | 2013-03-28 | 2013-07-10 | 郑州煤炭工业(集团)有限责任公司 | Two-plugging hole packer and plugging grouting method |
| CN103590782A (en) * | 2013-11-28 | 2014-02-19 | 华北科技学院 | Under-pressure grouting hole sealing device and method for gas extraction drill air bag blocking |
| CN105804692A (en) * | 2016-03-29 | 2016-07-27 | 中国矿业大学(北京) | Novel coal mine gas pressure measurement grouting hole sealing method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6575251B2 (en) * | 2001-06-13 | 2003-06-10 | Schlumberger Technology Corporation | Gravel inflated isolation packer |
-
2016
- 2016-10-17 CN CN201610911800.8A patent/CN106639962B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85200084U (en) * | 1985-04-01 | 1985-11-10 | 李起山 | Water seal and water pressure water case for shot hole blasting |
| CN102200024A (en) * | 2011-05-11 | 2011-09-28 | 河南理工大学 | Gas extraction center divided-flow type grouting and hole sealing device and hole sealing method |
| CN102913184A (en) * | 2012-10-26 | 2013-02-06 | 河南理工大学 | Secondary composite high-pressure grouting and sealing process of gas drainage drilling artificial separation barrier |
| CN103195388A (en) * | 2013-03-28 | 2013-07-10 | 郑州煤炭工业(集团)有限责任公司 | Two-plugging hole packer and plugging grouting method |
| CN103590782A (en) * | 2013-11-28 | 2014-02-19 | 华北科技学院 | Under-pressure grouting hole sealing device and method for gas extraction drill air bag blocking |
| CN105804692A (en) * | 2016-03-29 | 2016-07-27 | 中国矿业大学(北京) | Novel coal mine gas pressure measurement grouting hole sealing method |
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| CN106639962A (en) | 2017-05-10 |
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