CN106150534A - Baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method - Google Patents
Baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method Download PDFInfo
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- CN106150534A CN106150534A CN201510205445.8A CN201510205445A CN106150534A CN 106150534 A CN106150534 A CN 106150534A CN 201510205445 A CN201510205445 A CN 201510205445A CN 106150534 A CN106150534 A CN 106150534A
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Abstract
The present invention relates to a kind of baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method, can effectively solve the sealing of hole difficult problem such as spillage, running pulp in the quick grouting support of roadway floor anchor cable, it is ensured that sealing of hole effect, it is ensured that Safety of Coal Mine Production.Its structure of hole sealing device used by the present invention includes: Grouting Pipe, plug, inner-outer sleeve, iron hoop etc., inner sleeve is bondd with upper lower end cap by glue, overcoat is fixed on the groove of upper lower end cap by iron hoop, and Grouting Pipe is through upper lower end cap fixed thereto, equipped with sealing material between inner-outer sleeve.This apparatus structure is simple, low cost, it is capable of the rapid hole sealing of anchor cable hole under base plate high pre-stress state, strong guarantee is provided for realizing high-pressure slip-casting consolidation roadway floor fragmented rock body, and then ensure that being smoothed out of Safety of Coal Mine Production, it is a kind of innovation on the high pretightening force kind of anchorage cable anchor of mine floor tunnel.
Description
Technical field
The present invention relates to coal mine support field, particularly a kind of baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method.
Background technology
Along with coal mining depth is continuously increased, most mines have been enter into deep mining, and Floor Heave in Roadway phenomenon is increasingly stronger, and overall collapse destruction in tunnel is largely the result of Floor Heave in Roadway effect.Baseboard prestress anchorage technology is a kind of effective means controlling deep tunnel pucking, in base plate anchoring procedure, it is achieved the cast anchor anchorage style of upper note of base plate is the important measures improving base plate anchor force.At present, anchor rope grouting carries out the mode of sealing of hole and is broadly divided into two kinds: stop grouting plug and cement cotton yarn plug are real.Though cement cotton yarn sealing of hole low cost, operating procedure is complicated, and sealing of hole weak effect, after especially anchor cable being applied pretightning force, anchor cable moves and largely destroys sealing of hole body, it is difficult to realize band pressure grouting；Tradition rubber stopper used by injection hole sealing, complex manufacturing technology, relatively costly, and space between rubber stopper and anchor cable and cause spillage so that grouting pressure does not reaches rated value, range of grouting is substantially reduced, effect relative reduction.Therefore develop a kind of simple to operate, sealing of hole is effective and it is imperative to the difficult problem solving baseboard anchor cable rapid hole sealing slip casting to be suitable to the anchor cable hole slip-casting hole-sealing method of base plate specific condition.
Summary of the invention
For above-mentioned situation, for solving the defect of prior art, the purpose of the present invention is just to provide a kind of baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method, can effectively solve under the pre-stressed state of baseboard anchor cable hole the problem that injection hole sealing cost is high, sealing quality is poor.
The technical scheme that the present invention solves is to utilize grouting device, sequentially includes the following steps: the first step, drills and anchor anchor cable；Second step, installs stop grouting plug；3rd step, band pressure grouting.
The inventive method is simple, and easy to operate, it is achieved that the rapid hole sealing of anchor cable hole under baseboard prestress state, sealing of hole is effective, low cost, is the innovation on the high pretightening force kind of anchorage cable anchor of mine floor tunnel.
Accompanying drawing explanation.
Fig. 1 is the forward sight structure chart of the present invention.
Fig. 2 is forward sight TV structure profile of the present invention.
Fig. 3 is overcoat of the present invention, plug constitutional diagram.
Fig. 4 is TV structure figure in the present invention.
Fig. 5 is plug front view of the present invention.
Fig. 6 is inner sleeve front view of the present invention.
Fig. 7 is iron hoop structure chart of the present invention.
Fig. 8 is that the present invention uses state diagram.
Detailed description of the invention.
Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is described in further detail.
Being given by Fig. 1-8, the present invention utilizes hole sealing device, carries out according to the following steps.
The first step, hole and anchor anchor cable, drill bit is connected with drilling rod end, the drilling rod other end is connected with rig, start rig to implement to creep into, until during first drilling rod is nearly completely into boring 13 time, stop creeping into, utilize intermediate connecting sleeve that drilling rod is lengthened, be actually needed until boring 13 degree of depth meet.After hole to be drilled 13 accomplish fluently, extract drilling rod out, in boring, add resin anchoring agent 14, one end of anchor cable 10 being installed stirring-head and inserts in boring 13, the other end inserts in rig, starts rig and is stirred Anchor Agent 14, after stirring 1 ~ 2 minute, Anchor Agent 14 can stop after stirring completely.
Second step, stop grouting plug is installed, anchor cable 10 is inserted in the anchor cable hole 8 on stop grouting plug plug, stop grouting plug 9 is pushed position deep for 300mm in boring 13, after fixing the position of stop grouting plug 9, by Grouting Pipe 1 through the slip casting pore of anchor cable pallet 12, install pallet 12 and lockset 11, anchor cable 10 is applied the pretightning force of 150KN.Now, the filler 7 in stop grouting plug 9 runs into the water in boring 13 and chemical reaction, dilatancy i.e. occurs, and closes boring.
3rd step, band pressure grouting, by hose connection with grouting pump for Grouting Pipe 1, inject grout in boring 13, when grouting pressure reaches 2 ~ 3MPa, stop slip casting.Due to the expansion of the filler 7 in stop grouting plug 9, the space of stop grouting plug 9 with anchor cable 10 and boring 13 is blocked completely so that high-pressure slip-casting can be implemented smoothly.
Described hole sealing device includes Grouting Pipe, upper lower end cap, inner sleeve, overcoat, iron hoop up and down, filler forms, described inner sleeve 5 is bonding with upper plug head 3 and lower end cap 3 ' by super glue, circular hole and inner sleeve anchor cable hole 8 aligns and airtight bonding in the middle of plug, overcoat 2 is fixed on upper plug head 3 and lower end cap 3 ' by upper iron hoop 4 and lower iron hoop 4 ', Grouting Pipe 1 is inserted in the circular hole of upper lower end cap, Grouting Pipe 1 outer wall is bondd with plug by super glue, and play the effect of stop grouting plug body support column, equipped with sealing material inside stop grouting plug, for blocking boring space.
In order to ensure using effect, described hole sealing device, overcoat 2 selects hard cotton fabric, outer casing internal diameter 54mm, thick 2mm, long 100mm.
Described inner sleeve 5, long 92mm, thick 2mm, the such as vase-like of two ends up and down of inner sleeve 5 expands outwardly, and upper and lower end parts is finally in a horizontal plane, it is simple to bondd by super glue with plug 3 and 3 '.
Described plug 3 and 3 ', for discoid, diameter 52mm, thick 5mm, the outward flange at dish has the groove 6 and 6 ' of a deep 2mm respectively, and two circular holes are arranged at disk top, and big hole is anchor cable hole, and small sircle hole is slip casting pore, diameter 10mm.
Described iron hoop 4 and 4 ', is a circular metal iron ring, and outer ring is a plane, and iron hoop inner ring is semi-circular shape, and overcoat is fixed on plug 3 and 3 ' by iron hoop, and the semi-circular structure of iron hoop just matches with the groove of plug.
Described Grouting Pipe is general plastic hose, external diameter 10mm, and thick 1.5mm, internal diameter 7mm, length can be adjusted according to actual needs.
Described filler 7 is formed with according to a certain percentage from aluminium sulfate, portland cement and auxiliary material thereof, there is preferable dilatancy and higher set strength, can be the most airtight with the space of anchor cable and boring by stop grouting plug, increase the frictional resistance of stop grouting plug and anchor cable the wall of a borehole, play preferable sealing of hole effect, it is simple to realize band pressure grouting.
The service condition of the present invention is: play an anchor cable boring 13 at deep-well tunnel base plate, and the water in boring and boring mud are discharged, put into resin anchoring agent 14, anchor cable stirring-head is installed in anchor cable 10 one end, being inserted this one end in boring 13, the other end inserts in anchor cable rig, in startup rig is stirred Anchor Agent 14 and anchor cable 10 constantly advances anchor cable boring 13, stop operating when anchor cable 10 end distance base plate plane 150mm distance, remove rig.After baseboard anchor cable 10 anchors, anchor cable 10 end is inserted in the anchor cable hole 6 of stop grouting plug, stop grouting plug 9 is pushed boring 300mm depths, anchor cable pallet 12 is installed, by Grouting Pipe 1 through the circular hole of pallet 12, at anchor cable end, lockset 11 is installed.The pretightning force that anchor cable applies 250KN i.e. stops, and be now connected enforcement slip casting by the Grouting Pipe 15 of the Grouting Pipe 1 and grouting pump of exposing pallet 12.Due to the easy hydrops of roadway floor, the filler in stop grouting plug is met water and chemical reaction is i.e. occurred, and has preferable expansion character, and within a short period of time can realize higher-strength, stop grouting plug 9 is the most airtight with the space of anchor cable 10 and boring 13, prevent serosity from spilling, it is achieved high-pressure slip-casting.
Grouting device respective outer side edges used by the present invention is tight, and iron hoop can coordinate with plug groove closely, and then is firmly fixed on upper lower end cap by overcoat 2, and Grouting Pipe 1 is bondd by super glue with upper lower end cap, constitutes the main body rack of this device.Filler 7 has the effect that water expands of meeting, and the intensity that tool is higher.One of technical advantage of the present invention makes full use of this factor of the easy hydrops of roadway floor exactly, saves operation sequence.After stop grouting plug 9 installs, the water of roadway floor can be flowed in boring 13, and stop grouting plug 9 meets water, and its internal filler 7 reacts, and blocking stop grouting plug 9 and anchor cable 10 and the space of boring 13, carry out slip casting operation after grout cures rapidly.Owing to filler set strength is higher, the high-pressure slip-casting of anchor cable hole can be realized.
The present invention is a kind of baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method, easy to operate, method is simple, ensure that the rapid hole sealing of anchor cable hole under base plate high pre-stress state, strong guarantee is provided for realizing high-pressure slip-casting consolidation roadway floor fragmented rock body, it is the technical a kind of innovation of mine floor tunnel high pretightening force anchorage cable anchoring, there is significant economic and social benefit.
Claims (9)
1. a baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method, it is characterised in that utilize hole sealing device, sequentially include the following steps:
The first step, drill and anchor anchor cable, drill bit is connected with drilling rod end, the drilling rod other end is connected with rig, start rig to implement to creep into, until during first drilling rod is nearly completely into boring (13) time, stopping is crept into, utilize intermediate connecting sleeve that drilling rod is lengthened, it is actually needed until boring (13) degree of depth meets, after (13) hole to be drilled are accomplished fluently, extract drilling rod out, resin anchoring agent (14) is added in boring, one end of anchor cable (10) is installed stirring-head and inserts in boring (13), the other end inserts in rig, start rig and be stirred Anchor Agent (14), after stirring 1 ~ 2 minute, Anchor Agent (14) can stop after stirring completely；
Second step, stop grouting plug is installed, anchor cable (10) is inserted in the anchor cable hole (8) on stop grouting plug plug, stop grouting plug (9) is pushed position deep for 300mm in boring (13), after fixing the position of stop grouting plug (9), Grouting Pipe (1) is passed the slip casting pore of anchor cable pallet (12), install pallet (12) and lockset (11), anchor cable (10) is applied the pretightning force of 150KN, now, filler (7) in stop grouting plug (9) runs into the water in boring (13) and chemical reaction, dilatancy i.e. occurs, and closes boring (13)；
3rd step, band pressure grouting, by hose connection with grouting pump for Grouting Pipe (1), inject grout in boring (13), slip casting is stopped when grouting pressure reaches 2 ~ 3MPa, due to the expansion of the filler (7) in stop grouting plug (9), the space of stop grouting plug (9) with anchor cable (10) and boring (13) is blocked completely so that high-pressure slip-casting can be implemented smoothly.
Baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method the most according to claim 1, it is characterized in that, described hole sealing device includes Grouting Pipe, upper plug head, lower end cap, overcoat, upper ferrum hoop, lower ferrum hoop, inner sleeve, it is characterized in that inner sleeve (5) is bondd with upper plug head (3) and lower end cap (3 ') by super glue, overcoat (2) is fixed on upper lower end cap by upper iron hoop (4) and lower iron hoop (4 '), the inner ring semicircular body of iron hoop and the groove fit of plug, fixed jacket (5), in Grouting Pipe (1) insertion in the small sircle hole of lower end cap, Grouting Pipe (1) is fixed together with upper plug head (3) and lower end cap (3 ') by super glue, Grouting Pipe and injected hole circumference are bondd closely knit by blend compounds water.
Baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method the most according to claim 1 and 2, it is characterised in that hard cotton fabric selected by described overcoat (2), outer casing internal diameter 54mm, thick 2mm, long 100mm, its length has left certain surplus capacity, for the dilatancy of expanding cement.
Baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method the most according to claim 1 and 2, it is characterized in that, described inner sleeve (5) long 92mm, thick 2mm, the such as vase-like of two ends up and down of inner sleeve (5) expands outwardly, and upper and lower end parts is finally in a horizontal plane, it is simple to bondd by super glue with plug (3) and (3 '), inner sleeve also has certain elasticity, it is simple to anchor cable is inserted inner sleeve.
Baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method the most according to claim 1 and 2, it is characterized in that, described plug (3) and (3 ') are discoid, diameter 52mm, thick 5mm, the outward flange at dish has the groove of a deep 2mm, two circular holes are arranged at disk top, circular hole (8) is anchor cable hole, and another circular hole is slip casting pore, diameter 10mm.
Baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method the most according to claim 1 and 2, it is characterized in that, described iron hoop (4) and (4 ') are a circular metal iron ring, outer ring is a plane, iron hoop inner turns is semicircle shape, overcoat is fixed on plug (3) and (3 ') by iron hoop, and the semi-circular structure of iron hoop just matches with the groove 6 and 6 ' of plug.
Baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method the most according to claim 1 and 2, it is characterised in that described Grouting Pipe (1) is general plastic hose, external diameter 10mm, thick 1.5mm, internal diameter 7mm, length can be adjusted according to actual needs.
Baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method the most according to claim 1 and 2, it is characterized in that, described filler (7) is formed with according to a certain percentage from aluminium sulfate, portland cement and auxiliary material thereof, water generation chemical reaction met by this filler, there is preferable dilatancy, after solidification, intensity is high, can be the most airtight with the space of anchor cable (10) and boring (13) by stop grouting plug (9), increase the frictional resistance of stop grouting plug (9) and anchor cable the wall of a borehole, play preferable sealing of hole effect, it is simple to realize band pressure grouting.
Baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method the most according to claim 1 and 2, it is characterized in that, described inner sleeve (5), overcoat (2), Grouting Pipe (1) and filler (7) are common materials, low price, greatly reduces the technical costs of the present invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510205445.8A CN106150534A (en) | 2015-04-28 | 2015-04-28 | Baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510205445.8A CN106150534A (en) | 2015-04-28 | 2015-04-28 | Baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method |
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| CN106150534A true CN106150534A (en) | 2016-11-23 |
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| CN201510205445.8A Pending CN106150534A (en) | 2015-04-28 | 2015-04-28 | Baseboard of coal mine roadway anchor cable hole slip-casting hole-sealing method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630472A (en) * | 2017-10-31 | 2018-01-26 | 中冶天工集团有限公司 | Through the antipriming of TRD uniform thickness Soil-cement diaphragm walls |
| CN109236231A (en) * | 2018-11-02 | 2019-01-18 | 济南力稳岩土工程有限公司 | A kind of interior grouting device for blocking open-hole section crack water burst of mine drilling |
| CN110206534A (en) * | 2019-06-06 | 2019-09-06 | 张同德 | Across inclined hole resistivity CT imaging injection hole sealing cable protecting device and application method |
| CN112360342A (en) * | 2020-09-28 | 2021-02-12 | 中煤科工开采研究院有限公司 | Quick drilling hole sealing integration drilling rod |
| CN114673538A (en) * | 2022-04-21 | 2022-06-28 | 天地科技股份有限公司 | Anchor cable withdrawal device and anchor cable withdrawal method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4300631A (en) * | 1980-04-23 | 1981-11-17 | The United States Of America As Represented By The Secretary Of The Interior | Flexible continuous grout filled packer for use with a water infusion system |
| US5226485A (en) * | 1991-05-10 | 1993-07-13 | Gas Research Institute | Pass-through zone isolation packer and process for isolating zones in a multiple-zone well |
| CN102644471A (en) * | 2012-04-20 | 2012-08-22 | 天地科技股份有限公司 | Hole sealing machine and hole sealing method using hole sealing machine to perform small aperture grouting for anchoring anchor rope |
| CN102704971A (en) * | 2012-01-11 | 2012-10-03 | 济南澳科矿山工程技术有限公司 | Grouting and Grouting-stopping anchor cable inside hole |
| CN202531092U (en) * | 2012-04-20 | 2012-11-14 | 天地科技股份有限公司 | Hole packer |
| CN104389545A (en) * | 2014-10-31 | 2015-03-04 | 河南神华能源工程有限公司 | Hole sealing plug device for drilled holes in water-bearing coal seam and use method of hole sealing plug device |
-
2015
- 2015-04-28 CN CN201510205445.8A patent/CN106150534A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4300631A (en) * | 1980-04-23 | 1981-11-17 | The United States Of America As Represented By The Secretary Of The Interior | Flexible continuous grout filled packer for use with a water infusion system |
| US5226485A (en) * | 1991-05-10 | 1993-07-13 | Gas Research Institute | Pass-through zone isolation packer and process for isolating zones in a multiple-zone well |
| CN102704971A (en) * | 2012-01-11 | 2012-10-03 | 济南澳科矿山工程技术有限公司 | Grouting and Grouting-stopping anchor cable inside hole |
| CN102644471A (en) * | 2012-04-20 | 2012-08-22 | 天地科技股份有限公司 | Hole sealing machine and hole sealing method using hole sealing machine to perform small aperture grouting for anchoring anchor rope |
| CN202531092U (en) * | 2012-04-20 | 2012-11-14 | 天地科技股份有限公司 | Hole packer |
| CN104389545A (en) * | 2014-10-31 | 2015-03-04 | 河南神华能源工程有限公司 | Hole sealing plug device for drilled holes in water-bearing coal seam and use method of hole sealing plug device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630472A (en) * | 2017-10-31 | 2018-01-26 | 中冶天工集团有限公司 | Through the antipriming of TRD uniform thickness Soil-cement diaphragm walls |
| CN109236231A (en) * | 2018-11-02 | 2019-01-18 | 济南力稳岩土工程有限公司 | A kind of interior grouting device for blocking open-hole section crack water burst of mine drilling |
| CN109236231B (en) * | 2018-11-02 | 2024-04-09 | 济南力稳岩土工程有限公司 | Grouting device for plugging water burst in bare hole section crack in mine drilling |
| CN110206534A (en) * | 2019-06-06 | 2019-09-06 | 张同德 | Across inclined hole resistivity CT imaging injection hole sealing cable protecting device and application method |
| CN112360342A (en) * | 2020-09-28 | 2021-02-12 | 中煤科工开采研究院有限公司 | Quick drilling hole sealing integration drilling rod |
| CN112360342B (en) * | 2020-09-28 | 2022-12-20 | 中煤科工开采研究院有限公司 | Quick drilling hole sealing integration drilling rod |
| CN114673538A (en) * | 2022-04-21 | 2022-06-28 | 天地科技股份有限公司 | Anchor cable withdrawal device and anchor cable withdrawal method |
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Application publication date: 20161123 |