CN202417567U - Hole packing device of coal seam water injection slot hole - Google Patents
Hole packing device of coal seam water injection slot hole Download PDFInfo
- Publication number
- CN202417567U CN202417567U CN2011205699207U CN201120569920U CN202417567U CN 202417567 U CN202417567 U CN 202417567U CN 2011205699207 U CN2011205699207 U CN 2011205699207U CN 201120569920 U CN201120569920 U CN 201120569920U CN 202417567 U CN202417567 U CN 202417567U
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- hole
- board
- outer limit
- coal seam
- packer
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Abstract
The utility model discloses a hole packing device of a coal seam water injection slot hole. The hole packing device of the coal seam water injection slot hole comprises a hole packer, wherein the hole packer is connected with an outer limit board and an inner location board in a sealing way, the outer limit board is corresponding to the inner location board, the outer limit board is arranged closely to the primary end of the hole packer, the inner location board is arranged closely to the tail end of the hole packer, the outer limit board is also connected with an injection pipe and an air outlet pipe in the sealing way, the primary ends of the injection pipe and the air outlet pipe are both positioned at the outer side of the outer limit board, the tail ends of the injection pipe and the air outlet pipe are both positioned between the outer limit board and the inner location board, and the primary ends of the hole packer, the injection pipe and the air outlet pipe are respectively connected with a valve in the sealing way. The hole packing device of the coal seam water injection slot hole, disclosed by the utility model, is used for the water injecting and the hole packing of a coal seam, a hollow cavity between the inner location board and the outer limit board can be filled to be a mud filling area through the injection pipe by virtue of the inner location board and the outer limit board, the hole packing effect is good, and the investing and operation cost is low.
Description
Technical field
The utility model relates to a kind of mining device, relates in particular to a kind of coal-bed flooding slotted hole hole sealing device.
Background technology
Now, the general coal-bed flooding hole-sealing technology in each colliery is: through being sealed in water injection pipe in the boring with the water injection hole and infiltrate coal body.Sealing of hole promptly is meant and is enclosed in water injection pipe in the boring.The sealing of hole problem is a key issue of water filling, guarantee press water not from the aperture and near rib leak, just must be under certain hole sealing depth, the aperture is tight-closed, firm.It is generally acknowledged that the hole sealing depth of water injecting drilling depends primarily on the cranny development degree in water injection pressure, coal seam, performance and the boring direction etc. of zone of fracture width, the coal seam percolating water of coal body along the edge, tunnel.Generally be the rising borehole that water injection pressure is high more, the performance of coal seam percolating water is strong, its hole sealing depth is big more, otherwise hole sealing depth is little more.
In coal-bed flooding, it is generally acknowledged that the basic principle of hole sealing depth is: 1. hole sealing depth should not reach before the radius of wetted bulb of design in the wetted perimeter in coal seam as yet, must not seep water from the tunnel, more must not metal run out.2. hole sealing depth should surpass the release bandwidth of edge, tunnel coal body.When 3. water injection pressure was less than 2.5MPa, hole sealing depth was not less than 5m; Water filling is during greater than 2.5MPa, and hole sealing depth is 5-15m; Water injection pressure is during greater than 5MPa, and hole sealing depth should be greater than 15m.4. need to determine suitable hole sealing depth for new mining coal seam through test.
Artificial cement sealing of hole and two kinds of methods of hole packer are mainly adopted in sealing of hole measure at present, but investment and running cost are too high.
Summary of the invention
The purpose of the utility model provides a kind of investment and the low coal-bed flooding slotted hole hole sealing device of running cost.
For realizing above-mentioned purpose, the technical scheme that the utility model adopts is:
A kind of coal-bed flooding slotted hole hole sealing device comprises hole packer, it is characterized in that: airtight outer limiting plate and the interior location-plate of being connected with on the hole packer; Outer limiting plate is corresponding with interior location-plate; Outer limiting plate is near the first end of hole packer, and interior location-plate is near the end of hole packer, also airtight Grouting Pipe and the escape pipe of being connected with on the outer limiting plate; The first end of Grouting Pipe and the first end of escape pipe all are positioned at the outer limiting plate outside, the end of Grouting Pipe and the end of escape pipe all outside between limiting plate and the interior location-plate.
According to described coal-bed flooding slotted hole hole sealing device, it is characterized in that: the airtight respectively valve that is connected with of the first end of the first end of said hole packer, said Grouting Pipe and the first end of said escape pipe.
The utility model is used for the coal-bed flooding sealing of hole, by interior location-plate and outer limiting plate, can the cavity between interior location-plate and the outer limiting plate be filled to the mud filling area through Grouting Pipe, and sealing of hole is effective, and investment and running cost are low.
Description of drawings
Fig. 1 is the structural representation of the utility model.
In the accompanying drawing:
1, water filling district; 2, interior location-plate; 3, mud filling area; 4, hole packer; 5, outer limiting plate; 6, Grouting Pipe; 7, valve; 8, escape pipe.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:
A kind of coal-bed flooding slotted hole hole sealing device; As shown in Figure 1, comprise hole packer 4, airtight outer limiting plate 5 and the interior location-plate 2 of being connected with on the hole packer 4; Outer limiting plate 5 is corresponding with interior location-plate 2; Outer limiting plate 5 is near the first end of hole packer 4, and interior location-plate 2 is near the end of hole packer 4, also airtight Grouting Pipe 6 and the escape pipe 8 of being connected with on the outer limiting plate 5; The first end of Grouting Pipe 6 and the first end of escape pipe 8 all are positioned at outer limiting plate 5 outsides, the end of the end of Grouting Pipe 6 and escape pipe 8 all outside between limiting plate 5 and the interior location-plate 2.The airtight respectively valve 7 that is connected with of the first end of the first end of hole packer 4, the first end of Grouting Pipe 6 and escape pipe 8.
Embodiment recited above describes the preferred implementation of the utility model; Be not that design and scope to the utility model limits; Under the prerequisite that does not break away from the utility model design concept, common engineers and technicians make the technical scheme of the utility model in this area various modification and improvement all should fall into the protection domain of the utility model; The technology contents that the utility model is asked for protection all is documented in claims.
The utility model is used for the coal-bed flooding sealing of hole, is a kind of long-armed coal body water filling sealing of hole The application of new technique, and the 4 fens steel pipes (being formed by connecting 52 meters long short tubes) that adopt 10 meters long are as hole packer; In the insertion water injection hole; The first end welding valve of hole packer, apart from the first end of hole packer inwards 100 millimeters locate weldering and put outer limiting plate, outflow to prevent mud; Locate weldering and put interior location-plate apart from terminal outside 500 millimeters of hole packer, be used for stoping stream in the mud; Hole sealing depth is 8 meters (the coal body radius of wetted bulb is 7.5 meters), passes through Grouting Pipe cementing mortar with slush pump, 8 meters long cavitys between outer limiting plate of packing and the interior location-plate.
Be provided with escape pipe in the utility model; The end of escape pipe outside in the cavity between limiting plate and the interior location-plate; When utilizing the cavity between outer limiting plate of slush pump slip casting packing and the interior location-plate; When the first end of escape pipe has mud to flow out, then show and sealed full mud in the cavity, the valve of closing the first end of escape pipe gets final product.When annotating uphole, the end of escape pipe is deep into interior location-plate place, and when notes were bowed the hole, the end of escape pipe closed on outer limiting plate place.The water of cement mortar, ash, sand is than being 0.5:1:1, and in order to make the amount of contraction after the cement mortar solidification smaller as far as possible, the consumption of water should be thick shape with cement mortar and be as the criterion.When the near horizontal drilling of envelope,, preferably adopt the silicate expansive cement for guaranteeing sealing quality.Sand will sieve, and the control particle diameter is below 2mm.Adopt the slip casting of cement mortar hole-sealing pump, be not less than just no longer reaming of 13mm as long as can satisfy the cement mortar bed thickness.
When using traditional expansion type hole packer sealing of hole, need use 8 hole packers simultaneously, water filling reaches expection coal body wettability needs 10 days; Use the utility model sealing of hole just can reach the coal body wettability in 7 days, made full use of water resource, and sealing of hole is tight; Because hole sealing depth is 8 meters, surpass rock-bolt length, can avoid outwards leaking from square; Improve flood effectiveness, be operated in aspects such as human and material resources, financial resources for water filling and bring great convenience, improved operating efficiency.
Claims (2)
1. coal-bed flooding slotted hole hole sealing device; Comprise hole packer (4); It is characterized in that: hole packer (4) is gone up airtight outer limiting plate (5) and the interior location-plate (2) of being connected with, and outer limiting plate (5) is corresponding with interior location-plate (2), and outer limiting plate (5) is near the first end of hole packer (4); Interior location-plate (2) is near the end of hole packer (4); Outer limiting plate (5) is gone up also airtight Grouting Pipe (6) and the escape pipe (8) of being connected with, and the first end of the first end of Grouting Pipe (6) and escape pipe (8) all is positioned at outer limiting plate (5) outside, and the end of the end of Grouting Pipe (6) and escape pipe (8) all is positioned between outer limiting plate (5) and the location-plate (2).
2. coal-bed flooding slotted hole hole sealing device according to claim 1 is characterized in that: the airtight respectively valve (7) that is connected with of the first end of the first end of said hole packer (4), said Grouting Pipe (6) and the first end of said escape pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205699207U CN202417567U (en) | 2011-12-31 | 2011-12-31 | Hole packing device of coal seam water injection slot hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205699207U CN202417567U (en) | 2011-12-31 | 2011-12-31 | Hole packing device of coal seam water injection slot hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202417567U true CN202417567U (en) | 2012-09-05 |
Family
ID=46742340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205699207U Expired - Fee Related CN202417567U (en) | 2011-12-31 | 2011-12-31 | Hole packing device of coal seam water injection slot hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202417567U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562126A (en) * | 2011-12-31 | 2012-07-11 | 枣庄矿业(集团)有限责任公司田陈煤矿 | Hole sealing device for coal seam water infusion long hole |
| US10794174B2 (en) * | 2017-11-24 | 2020-10-06 | Shandong University Of Science And Technology | Dynamically self-balancing pressurized borehole-sealing apparatus and method thereof for coal seam gas pressure measurement |
-
2011
- 2011-12-31 CN CN2011205699207U patent/CN202417567U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562126A (en) * | 2011-12-31 | 2012-07-11 | 枣庄矿业(集团)有限责任公司田陈煤矿 | Hole sealing device for coal seam water infusion long hole |
| US10794174B2 (en) * | 2017-11-24 | 2020-10-06 | Shandong University Of Science And Technology | Dynamically self-balancing pressurized borehole-sealing apparatus and method thereof for coal seam gas pressure measurement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20121231 |