CN201351479Y - Gas drainage secondary high pressure grouting hole sealing device - Google Patents
Gas drainage secondary high pressure grouting hole sealing device Download PDFInfo
- Publication number
- CN201351479Y CN201351479Y CNU2009200884702U CN200920088470U CN201351479Y CN 201351479 Y CN201351479 Y CN 201351479Y CN U2009200884702 U CNU2009200884702 U CN U2009200884702U CN 200920088470 U CN200920088470 U CN 200920088470U CN 201351479 Y CN201351479 Y CN 201351479Y
- Authority
- CN
- China
- Prior art keywords
- grouting
- sizing device
- hole
- sides
- advances
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Pipe Accessories (AREA)
Abstract
The utility model discloses a gas drainage secondary high pressure grouting hole sealing device, comprising drainage pipes, pockets and a secondary grouting device. The two sides of the secondary grouting device are connected with the drainage pipes in a butting mode; the drainage pipes at the two sides of the device are respectively sleeved with a block head; the pockets are arranged between the each block head and the secondary grouting device; three grouting holes with one-way valves are arranged on the secondary grouting device; the grouting holes at the two sides of the secondary grouting device are respectively communicated with the pockets at the same side; and the middle grouting hole is communicated with space between the two pockets. The gas drainage secondary high pressure grouting hole sealing device pours grouting materials into the walls of drilling holes to seal the walls of the drilling holes and seal air leakage passages around the drilling holes, more specifically, firstly uses low-pressure grouting and secondly uses high-pressure grouting which is near ground stress, so as to fundamentally eliminate the air leakage fractures of the drilling holes.
Description
Technical field
The utility model relates to a kind of gas extraction secondary high-pressure slip-casting hole-sealing apparatus, especially adapts to the gas pumping sealing of hole and the gas pressure test of this coal bed drilling under the coal mine.
Background technology
Generally at 30 meters to hundreds of meters, sealing of hole is carried out in a certain section boring of the aperture certain distance of only adjusting the distance to the down-hole extraction borehole degree of depth, is difficult to adopt the method for direct slip casting to carry out sealing of hole, and the sealing of hole of coal mine gas extraction borehole divides permanent sealing of hole and provisional sealing of hole.At present, the permanent sealing of hole of known coal-bed gas extraction borehole is as sealing material with polyurathamc, foam cement and other expanded material, early stage " cement seaming aperture apparatus " (ZL90227075.3) no longer adopts, the well cementing method of pore sealing only is suitable for inclined drill, and also seldom adopt the domestic blown polyurethane materials sealing of hole that generally adopts at present because of operating inconvenience.At present, the provisional sealing of hole of known coal-face firedamp taking-out discharging drilling adopts reusable mechanical hole sealing device sealing of hole, as " fire damp extraction air filling type capsule bag hole packer " (ZL94209078.0), gum cover expansion type " coal rock layer drilling and sealing device " (ZL200420010782.9) etc., but these are not suitable for the sealing of hole of permanent mash gas pumping drilling.
Down-hole drilling will be deformed and destroy by the influence of geostatic stress, the intensity of expanded material such as polyurathamc, foam cement is very low and compressible amount is very big, the deformation failure of keyhole effectively, make the boring of sealing of hole section produce a large amount of crack leakage paths on every side, influence the concentration and the extraction effect of gas pumping.The gas leak phenomenon of the mechanical method of pore sealing that provisional sealing of hole adopted is even more serious, but because extraction time weak point (a few hours) is not generally done too high requirement.
(number of patent application is " bag type paste injection hole sealing device and the method for sealing thereof " of the applicant's patent applied for: 200710054384.5), because the restriction of receptaculum bag intensity, hole sealing tube (plastic pipe) intensity, be difficult to realize heavy pressure slip-casting hole-sealing, the sealing of hole grouting pressure only has about 1.5MPa, in addition could be after the complete expansion of capsule bag to drill hole wall slip casting, the pressure loss of pressure-control valve makes the grouting pressure of drill hole wall less than the slurries pressure in the capsule bag, and the actual grouting pressure of drill hole wall will be littler.Though the sealing of hole effect of this method for sealing is better than polyurethane sealing of hole method,, make this method for sealing still have gas leak phenomenon because the drill hole wall grouting pressure is low.The drill hole wall grouting pressure equals capsule bag grouting pressure and deducts the one-way cock opening pressure, thus pressure decay weaken greatly in the slip casting effect of drill hole wall.So for low coal seam, one time low pressure capsule bag injection hole sealing method can't reach best sealing of hole effect.
The utility model content
The utility model purpose is to provide a kind of more safe and reliable gas extraction secondary high-pressure slip-casting hole-sealing apparatus.
To achieve these goals, the utility model adopts following technical scheme: gas extraction secondary high-pressure slip-casting hole-sealing apparatus, comprise extraction pipe and capsule bag, the secondary that also comprises tubulose advances sizing device, secondary advances on the extraction pipe that sizing device both sides butt joints is connected with extraction pipe and both sides to be arranged with plug respectively, advance sizing device at each plug and secondary the capsule bag is set between the nearside mutually, the capsule bag is provided with exhaust plant; Described secondary advances sizing device and is provided with three slurry-feeding holes that are communicated with the center and is respectively equipped with one way valve, and two slurry-feeding holes of both sides are communicated with space in the capsule bag of homonymy respectively, and middle slurry-feeding hole is communicated with the space between the two capsule bags.
The tube wall that described secondary advances sizing device is provided with the axial vent holes that is communicated with both sides extraction pipe.
Described secondary advances secondary between the slurry-feeding hole of slurry-feeding hole in the middle of the sizing device and both sides and advances sizing device and be provided with along the circumferential direction binding groove, also is provided with binding groove along the circumferential direction on the plug, and capsule bag both ends open and two ends are tied up and are arranged in the binding groove.
The inner tubal wall that described secondary advances sizing device is provided with the reinforcing steel pipe.
The inner tubal wall that described plug cooperates with the extraction pipe is provided with in seal groove and the seal groove and is provided with sealing ring.
Described exhaust plant is the puncture micropore that is arranged on the capsule bag.
The utility model is that injecting paste material is to drill hole wall slip casting shutoff drill hole wall and leakage path on every side thereof, injecting paste material can be cement material or other chemical material of special modulation, slip casting for the first time adopt low-pressure grouting for the second time high-pressure slip-casting condition is provided, high-pressure slip-casting is fundamentally eliminated boring gas leakage crack for the second time.The gas pumping concentration of lower permeability seam that can make high-pressure slip-casting realizes that essence breaks through, and can effectively prevent or reduce leak gas around the boring of sealing of hole the section generation and the development in crack.
The tube wall that secondary advances sizing device is provided with the axial vent holes that is communicated with both sides extraction pipe, is to form pressure and pass the slip casting plug in the hole for gas during preventing slip casting; Secondary advances sizing device and plug is provided with binding groove, and it is convenient to be used for tying up the capsule bag, better tightness; The inner tubal wall that secondary advances sizing device is provided with the reinforcing steel pipe, can strengthen the bearing capacity that secondary advances sizing device; The inner tubal wall that plug cooperates with the extraction pipe is provided with in seal groove and the seal groove and is provided with sealing ring, is used for guaranteeing the sealing between plug and the extraction pipe; Exhaust plant is the puncture micropore that is arranged on the capsule bag, and in the slip casting of capsule bag, the air in the capsule bag can be got rid of by the puncture micropore, and injection slurry can not be by the puncture micropore.Twice slip casting blanking time fully solidifies in order to make the injection slurry in the capsule bag more than or equal to the setting time of the injecting paste material first time.
Description of drawings
Structural representation when Fig. 1 is the utility model slip casting for the first time;
Fig. 2 is the structural representation of the used slip casting plug of the utility model slip casting for the first time;
Structural representation when Fig. 3 is the utility model slip casting for the second time;
Fig. 4 is the structural representation of the used slip casting plug of the utility model slip casting for the second time;
Fig. 5 is the structural representation of plug;
Fig. 6 is the structural representation of plug longitudinal section;
Fig. 7 advances the structural representation of sizing device for secondary;
Fig. 8 advances the structural representation of sizing device longitudinal section for secondary.
The specific embodiment
As Fig. 1, Fig. 2, Fig. 7, shown in Figure 8, gas extraction secondary high-pressure slip-casting hole-sealing apparatus, comprise extraction pipe 1 and capsule bag 4, the secondary that also comprises tubulose advances sizing device 6, secondary advances the butt joint of sizing device 6 both sides and is connected with extraction pipe 1, the tube wall that secondary advances sizing device 6 is provided with the axial vent holes 13 that is communicated with both sides extraction pipe 1, the inner tubal wall that secondary advances sizing device 6 is provided with reinforcing steel pipe 12, secondary advances on the extraction pipe 1 that docks sizing device 6 both sides to be arranged with plug 5 respectively, advance sizing device 6 at each plug 5 and secondary capsule bag 4 is set between the nearside mutually, capsule bag 4 is provided with exhaust plant, exhaust plant is the puncture micropore 2 that is arranged on the capsule bag 4, and capsule bag 4 can adopt reducing rib fabric and rubber finger sleeve or elastic thin-wall material or expanded rubber pipe composition; As Fig. 7, shown in Figure 8, the secondary that secondary advances between the slurry-feeding hole 11 of slurry-feeding hole 11 in the middle of the sizing device 6 and both sides advances the binding groove 20 that can be provided with on the sizing device 6 along the circumferential direction, as Fig. 5, shown in Figure 6, also be provided with binding groove 7 along the circumferential direction on the plug 5, capsule bag 4 both ends opens and two ends are tied up and are arranged in the binding groove 7,20, the inner tubal wall that plug 5 cooperates with extraction pipe 1 is provided with in seal groove 8 and the seal groove 8 and is provided with sealing ring 9, and plug 5 can be a Plastic cap.As shown in Figure 3, secondary advances sizing device 6 and is provided with three slurry-feeding holes that are communicated with the center 11 and is respectively equipped with one way valve 10, two slurry-feeding holes 11 of both sides are communicated with the capsule bag 4 interior spaces 16 of homonymy respectively, and middle slurry-feeding hole 11 is communicated with the space 17 between the two capsule bags 4.
The method that adopts above-mentioned gas extraction secondary high-pressure slip-casting hole-sealing apparatus to carry out injection hole sealing may further comprise the steps: (1) inserts certain depth in the boring with injection hole sealing device; (2) as shown in Figure 1, the slip casting plug 3 of two grouting ports shown in Figure 2 is inserted secondaries advance sizing device 6, secondary is advanced sizing device 6 carry out low-pressure grouting with the slurry-feeding hole 11 that two capsule bags, 4 spaces 16 are communicated with; (2) step slip casting after finishing is extracted the slip casting plug 3 of two grouting ports shown in Figure 2; (3) as shown in Figure 3, treat that injection slurry has solidified after, adopt again 3 pairs of secondaries of slip casting plug of single grouting port as shown in Figure 4 advance in the middle of the sizing device 6 with two capsule bags 4 between the slurry-feeding hole 11 that is communicated with of space 17 carry out high-pressure slip-casting.
Above-mentioned steps (2) and step (3) can adopt special-purpose slip casting plug 3 respectively, in step (2), adopt the slip casting plug of two grouting ports, as shown in Figure 2, two corresponding settings in slurry-feeding hole 11 positions that two grouting ports 14 of slip casting plug 3 and secondary enter sizing device 6 both sides, slip casting plug 3 front portions also are provided with the dop 15 that is used for fixing slip casting plug 3, and the both sides of the grouting port 14 of slip casting plug 3 along the circumferential direction all are provided with seal groove 18 and sealing ring 19.As shown in Figure 4; Adopt the slip casting plug 3 of single grouting port in the step (3), the grouting port 14 and the secondary of slip casting plug 3 advances the corresponding setting in slurry-feeding hole 11 positions in the middle of the sizing device 6, slip casting plug 3 front portions also are provided with the dop 15 that is used for fixing slip casting plug 3, and the both sides of the grouting port 14 of slip casting plug 3 along the circumferential direction all are provided with seal groove 18 and sealing ring 19.(3) twice slip casting blanking time of step (2) and step also can be time several weeks more than or equal to the setting time of the injecting paste material first time.
Claims (6)
1, gas extraction secondary high-pressure slip-casting hole-sealing apparatus, comprise extraction pipe and capsule bag, it is characterized in that: the secondary that also comprises tubulose advances sizing device, secondary advances on the extraction pipe that sizing device both sides butt joints is connected with extraction pipe and both sides to be arranged with plug respectively, advance sizing device at each plug and secondary the capsule bag is set between the nearside mutually, the capsule bag is provided with exhaust plant; Described secondary advances sizing device and is provided with three slurry-feeding holes that are communicated with the center and is respectively equipped with one way valve, and two slurry-feeding holes of both sides are communicated with space in the capsule bag of homonymy respectively, and middle slurry-feeding hole is communicated with the space between the two capsule bags.
2, gas extraction secondary high-pressure slip-casting hole-sealing apparatus according to claim 1 is characterized in that: the tube wall that described secondary advances sizing device is provided with the axial vent holes that is communicated with both sides extraction pipe.
3, gas extraction secondary high-pressure slip-casting hole-sealing apparatus according to claim 1 and 2, it is characterized in that: described secondary advances secondary between the slurry-feeding hole of slurry-feeding hole in the middle of the sizing device and both sides and advances sizing device and be provided with along the circumferential direction binding groove, also be provided with binding groove along the circumferential direction on the plug, capsule bag both ends open and two ends are tied up and are arranged in the binding groove.
4, gas extraction secondary high-pressure slip-casting hole-sealing apparatus according to claim 3 is characterized in that: the inner tubal wall that described secondary advances sizing device is provided with the reinforcing steel pipe.
5, gas extraction secondary high-pressure slip-casting hole-sealing apparatus according to claim 4 is characterized in that: the inner tubal wall that described plug cooperates with the extraction pipe is provided with in seal groove and the seal groove and is provided with sealing ring.
6, gas extraction secondary high-pressure slip-casting hole-sealing apparatus according to claim 5 is characterized in that: described exhaust plant is the puncture micropore that is arranged on the capsule bag.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNU2009200884702U CN201351479Y (en) | 2009-02-10 | 2009-02-10 | Gas drainage secondary high pressure grouting hole sealing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNU2009200884702U CN201351479Y (en) | 2009-02-10 | 2009-02-10 | Gas drainage secondary high pressure grouting hole sealing device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN201351479Y true CN201351479Y (en) | 2009-11-25 |
Family
ID=41374867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNU2009200884702U Expired - Fee Related CN201351479Y (en) | 2009-02-10 | 2009-02-10 | Gas drainage secondary high pressure grouting hole sealing device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN201351479Y (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102011606A (en) * | 2010-12-10 | 2011-04-13 | 煤炭科学研究总院重庆研究院 | Reaction type foam hole sealing multi-baffle sealing device |
CN102071898A (en) * | 2010-12-10 | 2011-05-25 | 煤炭科学研究总院重庆研究院 | Self-formed baffle and reaction type foam hole sealing device thereof |
CN102071961A (en) * | 2010-12-24 | 2011-05-25 | 陕西陕煤韩城矿业有限公司 | Downward gas drainage drill hole and pressure testing drill hole sealing method |
CN102966329A (en) * | 2011-09-01 | 2013-03-13 | 淮南矿业(集团)有限责任公司 | Drainage borehole plugging device and method |
CN104343411A (en) * | 2013-07-23 | 2015-02-11 | 蔡长辉 | Hole sealing device for rapidly sealing drill holes |
CN105003224A (en) * | 2015-07-23 | 2015-10-28 | 江苏中煤矿山设备有限公司 | Two-section type hole packer and core drilling process of two-section type hole packer |
-
2009
- 2009-02-10 CN CNU2009200884702U patent/CN201351479Y/en not_active Expired - Fee Related
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102011606A (en) * | 2010-12-10 | 2011-04-13 | 煤炭科学研究总院重庆研究院 | Reaction type foam hole sealing multi-baffle sealing device |
CN102071898A (en) * | 2010-12-10 | 2011-05-25 | 煤炭科学研究总院重庆研究院 | Self-formed baffle and reaction type foam hole sealing device thereof |
CN102071961A (en) * | 2010-12-24 | 2011-05-25 | 陕西陕煤韩城矿业有限公司 | Downward gas drainage drill hole and pressure testing drill hole sealing method |
CN102071961B (en) * | 2010-12-24 | 2012-09-05 | 陕西陕煤韩城矿业有限公司 | Downward gas drainage drill hole and pressure testing drill hole sealing method |
CN102966329A (en) * | 2011-09-01 | 2013-03-13 | 淮南矿业(集团)有限责任公司 | Drainage borehole plugging device and method |
CN102966329B (en) * | 2011-09-01 | 2015-02-04 | 淮南矿业(集团)有限责任公司 | Drainage borehole plugging device and method |
CN104343411A (en) * | 2013-07-23 | 2015-02-11 | 蔡长辉 | Hole sealing device for rapidly sealing drill holes |
CN105003224A (en) * | 2015-07-23 | 2015-10-28 | 江苏中煤矿山设备有限公司 | Two-section type hole packer and core drilling process of two-section type hole packer |
CN105003224B (en) * | 2015-07-23 | 2017-12-29 | 郑州煤电股份有限公司告成煤矿 | Two-part hole packer and its boring and coring process |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101482026B (en) | Gas extraction secondary high-pressure slip-casting hole-sealing apparatus and its hole-sealing method | |
CN108119094B (en) | Two-plugging one-injection one-row hole sealing device for deep coal seam gas extraction drilling and use method | |
CN109577908B (en) | Gas extraction drilling and hole sealing device and method for sealing cracks through powder particles and high grouting pressure | |
CN201351479Y (en) | Gas drainage secondary high pressure grouting hole sealing device | |
CN101050696B (en) | Bag type paste injection hole sealing device and its hole sealing method | |
CN107313799A (en) | A kind of sealing and leakage plugging device and method for gas pumping | |
CN102200024B (en) | Gas extraction center divided-flow type grouting and hole sealing device and hole sealing method | |
CN102913184B (en) | Secondary composite high-pressure grouting and sealing process of gas drainage drilling artificial separation barrier | |
CN105715230B (en) | Ooze paddle list pouch injection hole sealing device and its method for sealing in middle part | |
CN101845944B (en) | Method for sealing gas drainage boreholes at specified positions | |
CN107939333B (en) | Multistage pressure-bearing type permeable hole sealing method and device | |
CN105840134A (en) | Single-bag grouting hole sealing device for upward crossing boreholes and hole sealing method adopting single-bag grouting hole sealing device | |
CN108278096B (en) | Dynamic self-adaptive hole sealing device and method for coal seam floor penetrating drilling | |
CN109322638B (en) | Gas extraction-water injection integrated pressurized grouting hole sealing device and method | |
CN209670939U (en) | A kind of coal mine gas extraction drill hole long range multi-stage cementing hole packer | |
CN209261534U (en) | A kind of combined type coal-bed flooding and gas drainage hole sealing device | |
CN207048813U (en) | Sealing and leakage plugging device for gas pumping | |
CN108678721A (en) | Packaged type hydraulic fracturing and injection hole sealing integrated apparatus and its construction method | |
CN202031533U (en) | Shunting-type grouting plugging device for gas extraction center | |
CN105317397A (en) | Double cloth bags type grouting sealing set and method | |
CN210977395U (en) | Slip casting hole sealing device | |
CN205743827U (en) | Mash gas extraction drilling cuttings backfills pouch slip casting type hole packer | |
CN210239638U (en) | Pressurized hole sealing device for coal mine nearly horizontal fracturing drilling | |
CN106677740B (en) | A kind of underground coal mine one-part form water sealing device and its encapsulating method | |
CN211900544U (en) | Hole sealing device with bag protection device |
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: 20091125 Termination date: 20110210 |