CN104863542B - A kind of method that nearly horizontal firedamp taking-out discharging drilling drilling cuttings combines sealing of hole with pouch - Google Patents

A kind of method that nearly horizontal firedamp taking-out discharging drilling drilling cuttings combines sealing of hole with pouch Download PDF

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Publication number
CN104863542B
CN104863542B CN201510299732.XA CN201510299732A CN104863542B CN 104863542 B CN104863542 B CN 104863542B CN 201510299732 A CN201510299732 A CN 201510299732A CN 104863542 B CN104863542 B CN 104863542B
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China
Prior art keywords
drilling
pouch
hole
sleeve pipes
pvc sleeve
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Expired - Fee Related
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CN201510299732.XA
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Chinese (zh)
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CN104863542A (en
Inventor
郝志勇
宋吴兵
苏云龙
孙炜浩
李博洋
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Priority to CN201510299732.XA priority Critical patent/CN104863542B/en
Publication of CN104863542A publication Critical patent/CN104863542A/en
Application granted granted Critical
Publication of CN104863542B publication Critical patent/CN104863542B/en
Expired - Fee Related legal-status Critical Current
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Abstract

A kind of method that nearly horizontal firedamp taking-out discharging drilling drilling cuttings combines sealing of hole with pouch, it is adaptable to nearly horizontal drilling.Constructed on coal body one big drilling, insertion front end there are the PVC sleeve pipes of floral tube, move back after brill and the PVC sleeve pipes for being fixed with pouch are inserted into big drilling.By injecting high-water material into pouch with the Grouting Pipe that pouch is bound, the inner end of Grouting Pipe is bound together with iron wire with PVC sleeve pipes.Continue a segment distance of constructing inwards along big drilling with small drill bit after high-water material solidification, the drilling cuttings that air drill is discharged in drilling process in the presence of wind-force due to dropping down onto in the space between PVC sleeve pipes and wammel wall surface of the hole, space between self-packing PVC sleeve pipes and big drilling, realizes sealing of hole integration of drilling.The effect of hole packer is served by pouch and can be good at preventing oozing out for high-water material, the drilling cuttings discharged using pouch and drilling process can complete sealing of hole, reduce sealing of hole cost, improve sealing of hole efficiency.Its is simple to operate, and sealing of hole works well.

Description

A kind of method that nearly horizontal firedamp taking-out discharging drilling drilling cuttings combines sealing of hole with pouch
Technical field
The present invention relates to a kind of method for sealing, especially a kind of nearly horizontal firedamp taking-out discharging drilling suitable for underground coal mine is bored Bits combine method for sealing with pouch.
Background technology
It is the key of gas drainage under suction using suitable hole-sealing technology and sealing material, the quality of sealing quality is directly affected The efficiency of gas drainage under suction.The current hole sealing technology used both at home and abroad mainly has mechanical cementing mortar sealing of hole, dual-stage slip casting envelope Hole, foaming polymeric materials sealing of hole, hole packer sealing of hole etc..Wherein mechanic water injection cement mortar sealing of hole is applied to inclined drill;Dual-stage Injection hole sealing is applied to nearly level or gently inclined seam, but operates extremely complex;Foaming polymeric materials sealing of hole has foaming times Number height, light weight, the rapid advantage of sealing of hole, but its cost is higher, the intensity after shaping is relatively low, easily catches fire, meet shipwreck to send out The shortcomings of bubble, operation require higher.Hole packer sealing of hole speed is reused soon can reduce cost, but effect is poor, is only applicable to Interim extraction sealing of hole.
The content of the invention
Technical problem:The purpose of the present invention be directed to prior art in exist problem there is provided one kind it is simple to operate, low into Originally, the good nearly horizontal firedamp taking-out discharging drilling drilling cuttings of effect combines method for sealing with pouch.
Technical scheme:The nearly horizontal firedamp taking-out discharging drilling drilling cuttings of the present invention combines method for sealing, including following step with pouch Suddenly:
A. the one big drilling of construction into nearly horizontal coal body with big drill bit;
B. move back after brill, the PVC sleeve pipes that front end carries floral tube are loaded into big drilling, are fixed on while loading under PVC sleeve pipes The Grouting Pipe in portion, and an explosive valve is set in the anterior of Grouting Pipe, wind envelope on the PVC sleeve pipes and Grouting Pipe positioned at aperture section The pouch in hole, and a check valve is set in pouch at Grouting Pipe rear portion;
C. high-water material is injected by Grouting Pipe, realizes the closure in space between PVC sleeve pipes outer end portion and big drilling, together When check valve automatically opened up in the presence of grouting pressure, the slip casting into pouch, when pressure gauge registration reaches 2MP before Grouting Pipe The explosive valve explosion at end, prevents pouch to be bursting at the collision because pressure is excessive, now completes slip casting;
D. after high-water material solidification after, with small drill bit along the bottom hole drilled greatly inwardly construction one small bore, it is ensured that it is small Drilling and big drilling are concentric, and the drilling cuttings discharged in drilling process is dropped down onto in the space between PVC sleeve pipes and wammel wall surface of the hole, automatically The space for filling and being compacted PVC sleeve pipes between big drilling;
E. small drill bit is crept into after precalculated position, drill bit and drilling rod is exited, by the PVC sleeve pipes mouth of pipe and gas drainage under suction pipe network Connection, completes whole sealing of hole process.
Pressure gauge of the described Grouting Pipe outermost end provided with monitoring slip casting overpressure in real time.
Described PVC sleeve pipes total length is 12m.
The length of described pouch is 0.8m, and the position of pouch is adjusted according to actual conditions.
Described pouch is made of the impervious waterproof of high-water material slurries, fire-retardant, antistatic three proofings cloth material.
A diameter of 113mm of described big drilling, hole depth is 13m.
The a diameter of 75mm of described small bore.
Described floral tube the inner is apart from bottom hole 0.5m, and PVC sleeve pipes outer end is apart from aperture 0.5m.
Beneficial effect:Due to using above-mentioned technical proposal, compared with prior art, the present invention uses pouch and drilling process The drilling cuttings of middle discharge is automatically performed sealing of hole process, space of the drilling cuttings padding and compacting between PVC sleeve pipes and wammel wall surface of the hole, realizes The integration of drilling sealing of hole.Special pouch is used in combination with PVC sleeve pipes and simplifies slip casting process, reduces the use of high-water material Amount.Pouch serves the effect of hole packer and can be good at preventing oozing out for high-water material.The present invention is simple to operate, sealing of hole effect Fruit is good, suitable for nearly horizontal drilling.The drilling cuttings discharged using pouch and drilling process can complete sealing of hole, reduce sealing of hole into This, improves sealing of hole efficiency.Its is simple to operate, and sealing of hole works well, with wide applicability.
Brief description of the drawings
Fig. 1 is that the nearly horizontal firedamp taking-out discharging drilling drilling cuttings of the present invention combines the method schematic diagram of sealing of hole with pouch;
Fig. 2 is the A-A structural representations in Fig. 1.
In figure:1-PVC sleeve pipes, 2- Grouting Pipes, 3- pressure gauges, 4- pouches, the big drillings of 5-, 6- small bores, 7- is mono- To valve, 8- explosive valves, 9- drilling cuttings, 10- floral tubes.
Embodiment
One embodiment of the present of invention is further described below in conjunction with the accompanying drawings:
As shown in figure 1, the method that the nearly horizontal firedamp taking-out discharging drilling drilling cuttings of the present invention combines sealing of hole with pouch, including use Φ 113mm big drill bit, Φ 75mm small drill bit, Φ 42mm drilling rods, PVC sleeve pipes, floral tube, pouch, Grouting Pipe, pressure gauge, make Plugging material is high-water material and drilling cuttings.Can be accurate with drilling cuttings in order to ensure that nearly horizontal firedamp taking-out discharging drilling is smoothly constructed Predetermined position is really fallen into, early-stage preparations are carried out:
(1) orientation and inclination angle of rig drilling are determined using geologic compass;
(2) powder is directly arranged using underground airduct air feed;
(3) drilling rod and drill bit in connection, start rig and carry out bore operation.
Comprise the following steps that:
A. with Φ 113mm big drill bit into nearly horizontal coal body at the one big drilling 5 of construction, perforate depth to 13m when, Exit drilling rod and big drill bit;
B. move back after brill, the PVC sleeve pipes 1 that front end carries floral tube 10 are loaded into big drilling 5, PVC sets are fixed on while loading The Grouting Pipe 2 of the bottom of pipe 1, and an explosive valve 8 is set in the anterior of Grouting Pipe 2, in the PVC sleeve pipes 1 positioned at aperture section and slip casting The pouch 4 of sealing of hole is wound on pipe 2, and a check valve 7 is set in pouch 4 at the rear portion of Grouting Pipe 2;The flower of the front end of PVC sleeve pipes 1 The length of pipe 10 is 1m, and the total length of PVC sleeve pipes 1 is 12m, is fixed with the PVC sleeve pipes 1 of pouch 4 and is inserted into big drilling 5, capsule The length of bag 4 is 0.8m, and the position of pouch 4 adjusted according to actual conditions so that the inner end of floral tube 10 apart from bottom hole 0.5m, The outer end of PVC sleeve pipes 1 is apart from aperture 0.5m.
C. high-water material is injected into pouch 4 by the Grouting Pipe 2 bound with pouch 4, realizes the outer end portion of PVC sleeve pipes 1 The closure in space between big drilling 5, while check valve 7 is automatically opened up in the presence of grouting pressure, the slip casting into pouch 4, With the injection of high-water material, the registration of pressure gauge 3 is gradually increased by 0, when the registration of pressure gauge 3 reaches 2MP, before Grouting Pipe 2 The explosion of explosive valve 8 at end, prevents pouch 4 to be bursting at the collision because pressure is excessive, and the registration of pressure gauge 3 is rapidly decreased to for 0, now complete note Slurry;
D. after after high-water material solidification, the bottom hole with Φ 75mm small drill bit along big drilling 5 continues to construct one inwards Small bore 6, it is ensured that small bore 6 and big drilling 5 are concentric, and the drilling cuttings 9 discharged in drilling process drops down onto PVC sleeve pipes 1 and big the wall of a borehole In space between face, automatic filling and the space being compacted between PVC sleeve pipes 1 and big drilling 5
E. small drill bit is drilled into behind precalculated position, and drill bit and drilling rod are exited, and PVC sleeve pipes 1 are connected with gas drainage under suction pipe network, Complete whole sealing of hole process.
Above-described embodiment only expresses one embodiment of the present invention, but therefore can not be interpreted as to model of the present invention The limitation enclosed.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, also Several modifications and improvements can be made, these belong to protection scope of the present invention.

Claims (4)

1. a kind of method that nearly horizontal firedamp taking-out discharging drilling drilling cuttings combines sealing of hole with pouch, it is characterised in that comprise the following steps:
A. the one big drilling of construction into nearly horizontal coal body with big drill bit(5), described big drilling(5)A diameter of 113mm, Hole depth is 13m;
B. when perforate depth is at 13m, drilling rod and big drill bit is exited, is moved back after brill, to big drilling(5)Interior loading front end carries floral tube (10)PVC sleeve pipes(1), PVC sleeve pipes are fixed on while loading(1)The Grouting Pipe of bottom(2), and in Grouting Pipe(2)Front portion One explosive valve (8) is set, in the PVC sleeve pipes positioned at aperture section(1)And Grouting Pipe(2)The pouch of upper winding sealing of hole(4), and in note Slurry pipe(2)Rear portion is located at pouch(4)One check valve of middle setting (7);The PVC sleeve pipes(1)The floral tube of front end(10)Length be 1m, PVC sleeve pipe(1)Total length be 12m, be fixed with pouch(4)PVC sleeve pipes(1)It is inserted into big drilling(5)In, pouch(4) Length be 0.8m, pouch(4)Position adjusted according to actual conditions;Described Grouting Pipe(2)Exposed junction is provided with real-time Monitor the pressure gauge of slip casting overpressure(3);
C. by with pouch(4)Grouting Pipe (2) the injection high-water material of binding, realizes PVC sleeve pipes(1)Outer end portion and big drilling (5)Between space closure, while check valve (7) is automatically opened up in the presence of grouting pressure, to pouch (4) interior slip casting, with The injection of high-water material, pressure gauge(3)Registration gradually increased by 0, work as pressure gauge(3)When registration reaches 2MP, Grouting Pipe (2) explosive valve (8) explosion of front end, prevents pouch (4) to be bursting at the collision because pressure is excessive, pressure gauge(3)Registration be rapidly decreased to for 0, now complete slip casting;
D. after after high-water material solidification, drilled with small drill bit along big(5)Bottom hole inwardly construction one small bore(6), it is ensured that Small bore(6)With big drilling(5)With one heart, the drilling cuttings (9) discharged in drilling process drops down onto PVC sleeve pipes(1)With big drilling(5)Wall Between space in, automatic filling is simultaneously compacted PVC sleeve pipes(1)With big drilling(5)Between space;
E. small drill bit is crept into after precalculated position, drill bit and drilling rod is exited, by PVC sleeve pipes(1)The mouth of pipe and gas drainage under suction pipe network Connection, completes whole sealing of hole process.
2. the method that a kind of nearly horizontal firedamp taking-out discharging drilling drilling cuttings according to claim 1 combines sealing of hole with pouch, it is special Levy and be:Described pouch(4)It is made of the impervious waterproof of high-water material slurries, fire-retardant, antistatic three proofings cloth material.
3. the method that a kind of nearly horizontal firedamp taking-out discharging drilling drilling cuttings according to claim 1 combines sealing of hole with pouch, it is special Levy and be:Described small bore(6)A diameter of 75mm.
4. the method that a kind of nearly horizontal firedamp taking-out discharging drilling drilling cuttings according to claim 1 combines sealing of hole with pouch, it is special Levy and be:Described floral tube (10) the inner is apart from bottom hole 0.5m, and PVC sleeve pipes (1) outer end is apart from aperture 0.5m.
CN201510299732.XA 2015-06-03 2015-06-03 A kind of method that nearly horizontal firedamp taking-out discharging drilling drilling cuttings combines sealing of hole with pouch Expired - Fee Related CN104863542B (en)

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CN106285555B (en) * 2016-09-07 2019-01-01 淮南矿业(集团)有限责任公司 The strong coal powder injection layer extraction borehole blowout prevention hole sealing device of high methane and its method for sealing
CN106814002B (en) * 2017-01-25 2019-07-16 中国地质大学(北京) It is a kind of to simulate the apparatus and method that tolerance is lost in low coal rank coal sample location of the coring procedure
CN109488370B (en) * 2018-11-26 2020-11-10 淮南矿业(集团)有限责任公司 Underground limestone water exploration and drainage drilling construction method
CN110761734A (en) * 2019-12-06 2020-02-07 山西潞安集团余吾煤业有限责任公司 Sealing device and sealing method for drilling of high-gas soft coal seam

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SU941628A1 (en) * 1980-04-02 1982-07-07 Государственный Макеевский Ордена Октябрьской Революции Научно-Исследовательский Институт По Безопасности Работ В Горной Промышленности Apparatus for measuring gas content of coal bed in mine
CN102747980A (en) * 2012-07-18 2012-10-24 中国矿业大学 Expansion type multi-grade pressurized rapid hole sealing technology
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Granted publication date: 20170929

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