CN202500606U - Device for filling aggregate into formation cavity through ground surface borehole - Google Patents

Device for filling aggregate into formation cavity through ground surface borehole Download PDF

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Publication number
CN202500606U
CN202500606U CN2012200273965U CN201220027396U CN202500606U CN 202500606 U CN202500606 U CN 202500606U CN 2012200273965 U CN2012200273965 U CN 2012200273965U CN 201220027396 U CN201220027396 U CN 201220027396U CN 202500606 U CN202500606 U CN 202500606U
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CN
China
Prior art keywords
aggregate
water
drill string
borehole
cavity
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Expired - Fee Related
Application number
CN2012200273965U
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Chinese (zh)
Inventor
李海燕
潘光明
李术才
姜华
张霄
惠冰
李召峰
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Shandong University
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Shandong University
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Priority to CN2012200273965U priority Critical patent/CN202500606U/en
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Publication of CN202500606U publication Critical patent/CN202500606U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model relates to a device for filling aggregate into a formation cavity through a ground surface borehole. The device comprises a hollow drill string which stretches into a borehole. A lower end of the drill string is provided with a spray head, and an upper end of the drill string is provided with a water connector which is connected with the grouting pump through a high pressure rubber pipe. A borehole mouth is provided with an aggregate conveying belt machine, a gyrator, and a water pipe, the gyrator is connected with a drilling machine, the water pipe is connected with a water pump to transmit water to the borehole, and the aggregate conveying belt machine transmits the aggregate to the borehole. The utility model has the following advantages that: various kinds of accidents occurred when the ground surface borehole passes through the formation cavity are solved well, when adding the aggregate through the ground surface borehole, revolution and shift of the drill string are used, the aggregate in the borehole is carried to a gob area by using water washing, that the aggregate enters into the cavity smoothly is ensured, and safe and smooth construction of the borehole is ensured.

Description

Device through surface drilling filler aggregate in the cavity, stratum
Technical field
The utility model relates to a kind of device through surface drilling filler aggregate in the cavity, stratum, belongs to technical fields such as geological prospectings such as mine, traffic tunnel, water conservancy and hydropower, water damage control, infrastructure.
Background technology
At present, mine water damage accident especially coal mine flood accident is one of accident that influences workers ' safety and mine economic benefit, and annual colliery water leak accident constantly takes place.At the following group coal and receive the more serious old mining area of seat earth Ordovician system limestone water threat of exploitation, on organize coal and formed coal seam goaf.After group coal seat earth aquifer hydrology peephole, mine gush gushing water under ground construction, water-filling aquifer construction surface grout injection water blockoff is holed; During in ground construction seat earth grouting and reinforcing transformation boring and at engineering the drilling such as ground construction drainage hole, cable borings; Boring certainly will be passed group coal goaf, and the existence in goaf brings great difficulty to drilling construction; In the southern areas that the karst karst is grown, often run into bigger karst cavity during the construction geology exploratory bore-hole; In these cavities, creep into and hole scattering accident, borehole collapse often occur and fall piece and cause that underground drilling accident, drilling rod are got rid of in the cavity at empty top board kerve stick of tool accident, drilling rod by card accident, boring in empty deck and take off the brill accident and occur that disrance sleeve partly is broken or dropout accident etc. in the cavity.For reducing and stopping above-mentioned accident, need fill full aggregate sometimes in the cavity district and, artificially make false stratum, to guarantee the safe smooth construction of boring to aggregate accumulation body slip casting sealing.In some grouting for water blocking engineering, need in addition through surface drilling filler aggregate in crossing the water tunnel, to tackle aquaporin.
The patent No. is that 85107683 Chinese patent discloses a kind of method of cutting off underground cavity pocket and roadway system high speed current with rock stuffing.For cutting off underground cavity pocket and roadway system current a flow tube with casing reinforcement is set at least; Conduit major axis and water (flow) direction are unanimous on the whole; The sleeve pipe of flow tube lets water flow freely in the flow inlet district of cavity and roadway system, and the cavitating flow outlet area is being opened.Insert the solid particle of grain size between the flow inlet district of this cavity and outlet area or in the tunnel of roadway system; To improve resistance; Cause one to cut off the district via the slip casting of filler input hole then, and current change its course through flow tube. at last the filler input pipe is thoroughly blocked.This patent is the conduit earial drainage that is processed into sleeve pipe earlier; Pile up the formation body of wall at the sleeve pipe position with rubble then, grouting and reinforcing between gravel particle is consolidated into a waterwall in the body of wall; Filling solid particle in sleeve pipe then finally reaches the purpose of blocking water flow in cavity or tunnel.It should be the method that water is crossed in shutoff, and what it solved is how to cut off the problem of crossing water in cavity or the tunnel.
Summary of the invention
The purpose of the utility model provides a kind of device through surface drilling filler aggregate in the cavity, stratum, and this kind device can be realized safe smooth construction.
The technical scheme that the utility model is taked is:
Through the device of surface drilling filler aggregate in the cavity, stratum, comprise the hollow drill pipe post that stretches in the boring, injector head is established in the drill string lower end, and the upper end of drill string is provided with water swivel, and water swivel is connected with grouting pump through high-pressure rubber pipe; Hell is provided with aggregate belt conveyer, gyrator, water pipe, and drill string inserts in the gyrator, and gyrator connects rig, and water pipe connects water pump to the boring water delivery, and the aggregate belt conveyer is carried aggregate to boring.
Described drill string is formed by connecting on the more piece drilling rod.The top of drill string hangs on the elevator through wire rope.Described injector head has spray-hole, and the outside is evenly distributed with the welding-on cutting edge.
Start rig and make the gyrator rotation, drive the drill string revolution; Open the water pipe of hell, water-filling in boring; Open grouting pump, through high-pressure rubber pipe and water swivel water-filling in drill string; Start the aggregate belt conveyer again; Slow filler aggregate in boring; Aggregate washing away of water carry and the effect of conducting oneself with dignity under, in holing, constantly be scattered to the space, goaf, lifting and the decline through elevator and wire rope is simultaneously gone here and there drilling rod up and down in the drill string turning course; The moving amplitude of string finishes until filling between 1-4m.
The beneficial effect of the utility model is better to have solved all kinds of accidents that occur when surface drilling is crossed the cavity, stratum; In the surface drilling aggregate added, the use drill string turned round and string moves, and water washes away to carry and gets into the interior aggregate of holing to the goaf, has guaranteed that aggregate gets in the cavity smoothly, has guaranteed the safe smooth construction of boring.
Description of drawings
Fig. 1 is the structure drawing of device of the utility model;
Wherein: 1 drill string, 2 elevators, 3 high-pressure rubber pipes, 4 coal overlying stratas, 5 rigs; 6 aggregates (stone, sand), 7 injector heads, 8 coal seam goafs, 9 aggregate accumulation bodies, 10 coal seams; The spoil of inbreak in 11 coal seam goafs, 12 coal sub-surfaces, 13 water pipes, 14 spray-holes, 15 jets; 16 aggregate belt conveyers, 17 gyrators, 18 water swivels, 19 wire rope, 20 cutting edges.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is further specified.
Like accompanying drawing 1, through the device of surface drilling filler aggregate in the cavity, stratum, comprise the hollow drill pipe post 1 that stretches in the boring, injector head 7 is established in drill string 1 lower end, and the upper end of drill string 1 is provided with water swivel 18, and water swivel 18 is connected with grouting pump through high-pressure rubber pipe 3; Hell is provided with aggregate belt conveyer 16, gyrator 17, water pipe 13, and drill string 1 inserts in the gyrator 17, and gyrator 17 connects rig 5, and water pipe 13 connects water pump to the boring water delivery, and aggregate belt conveyer 16 is carried aggregate 6 to boring.
Described drill string 1 is formed by connecting on the more piece drilling rod.The top of drill string 1 hangs on the elevator 2 through wire rope 19.Described injector head 7 has spray-hole 14, the outside welding-on cutting edge 20 that evenly distributes, and water comes out to form jet 15 from spray-hole.
Shown in accompanying drawing 1, the stratum can be divided into coal overlying strata 4 (face of land is to the stratum between the coal seam goaf), the spoil 11 of inbreak in the coal seam goaf 8, coal seam goaf, coal seam 10 and coal sub-surface 12.Aggregate 6 is piled into aggregate accumulation body 9 on the spoil of coal seam goaf 8 inbreak in coal seam goaf.
With the technology of said apparatus through surface drilling filler aggregate in the cavity, stratum, step is following:
(1) according to boring the degree of depth choose the drilling rod radical, to boring in transfer drilling rod, jointed rod is mounted to drill string;
(2) start rig and make the gyrator rotation, drive the drill string revolution; Open the water pipe of hell, water-filling in boring; Open grouting pump, through high-pressure rubber pipe and water swivel water-filling in drill string; Start the aggregate belt conveyer again; Slow filler aggregate in boring; Aggregate washing away of water carry and the effect of conducting oneself with dignity under, in holing, constantly be scattered to the space, goaf, lifting and the decline through elevator and wire rope is simultaneously gone here and there drilling rod up and down in the drill string turning course; The moving amplitude of string finishes until filling between 1-4m;
(3) dismantle gyrator,, propose boring to drill string, lay down injector head, remove aggregate belt conveyer and water pipe respectively with elevator and wire rope lifting drill string, the site clearing, aggregate is filled construction and is accomplished.
In the above-mentioned technology: drill string must not be less than 60mm with boring internal diameter gap, and drilling rod screw thread (being the connecting thread of drilling rod) junction requires to twine veil, and last dope, and screwing during water-filling, drilling rod screw thread place drainage should not occur in drilling rod.
The drill string speed of gyration is selected according to the rig that uses; The general 75-150 of rotating speed rev/min; The speed of sending into of aggregate should be selected according to the annular gap between boring and the drill string; Generally be as the criterion to be no more than 2/3 of ring-type section, can use 2 cun sebific ducts to supply water in drill string through grouting pump, general flow is not less than 15m 3/ h.The water of water pipe and the volume ratio of aggregate are controlled at 3~5: 1, regulate its proportioning according to particle diameter, the decrease speed of aggregate in boring of aggregate, and particle diameter is more little, and volume ratio is more little; The aggregate decrease speed is more little, and volume ratio is big more, but the volume ratio minimum must not be lower than 3: 1.Space intersects face area according to aggregate in aggregate size and the boring falls confirms that injection rate is generally fine sand 5m 3/ h, stone is no more than 3m 3/ h.Must not stop in the filling process supplying water, and guarantee that capacity supplies water.Available aggregate is a tough aggregate, can adopt multiple material (such as fine sand, stone etc.), runs into the expansion that water can not produce volume.The aggregate gravel directly is no more than drill string and 1/2 of boring annular gap.
Gyrator must not stop revolution in boring, drill string must not stop to go here and there up and down in holing, and the purpose that drill string turns round and string is moving prevents aggregate accumulation obstruction in boring exactly.General drill string string will keep injector head in the goaf when moving.When the more obstruction of accumulation is holed in aggregate is being holed; Keep making the revolution of drill string forward and promote drill string; Utilize the injector head cleaning bottom of hole that makes progress, must guarantee the lasting water supply of grouting pump capacity during cleaning bottom of hole, satisfy the water yield of injector head place jet; Play to the injector head cooling with to the goaf and wash away the purpose of carrying the obstruction aggregate of being swept out, stop up thereby remove the accumulation of aggregate in the hole.Forbid the drill string reversed turning and cause the drill string case accident.Forbid drill string not turn round and the directly upwards powerful operation that draws high drill string, to prevent the card underground drilling accident.
The purpose that grouting pump supplies water in drill string is when to be exactly drill string enter in the aggregate accumulation body with the injector head of its lower end; Prevent that spray-hole from stopping up; The jet that produces through spray-hole in addition can outwards be released the aggregate that drops to the injector head position through jet power, with the increasing aggregate slump of most big degree and the floor space of accumulation.When aggregate obstruction boring utilizes the injector head cleaning bottom of hole, be used for the cooling injection head in addition.Requirement grouting pump rated pressure must not be less than 3.0MPa, and the output minimum must not be less than 100L/min.

Claims (4)

1. through the device of surface drilling filler aggregate in the cavity, stratum, it is characterized in that comprise the hollow drill pipe post that stretches in the boring, injector head is established in the drill string lower end, the upper end of drill string is provided with water swivel, and water swivel is connected with grouting pump through high-pressure rubber pipe; Hell is provided with aggregate belt conveyer, gyrator, water pipe, and drill string inserts in the gyrator, and gyrator connects rig, and water pipe connects water pump to the boring water delivery, and the aggregate belt conveyer is carried aggregate to boring.
2. the device through surface drilling filler aggregate in the cavity, stratum according to claim 1 is characterized in that described drill string is formed by connecting on the more piece drilling rod.
3. the device through surface drilling filler aggregate in the cavity, stratum according to claim 1 is characterized in that the top of drill string hangs on the elevator through wire rope.
4. the device through surface drilling filler aggregate in the cavity, stratum according to claim 1 is characterized in that described injector head has spray-hole, and the outside is evenly distributed with the welding-on cutting edge.
CN2012200273965U 2012-01-20 2012-01-20 Device for filling aggregate into formation cavity through ground surface borehole Expired - Fee Related CN202500606U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012200273965U CN202500606U (en) 2012-01-20 2012-01-20 Device for filling aggregate into formation cavity through ground surface borehole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012200273965U CN202500606U (en) 2012-01-20 2012-01-20 Device for filling aggregate into formation cavity through ground surface borehole

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CN202500606U true CN202500606U (en) 2012-10-24

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102536317A (en) * 2012-01-20 2012-07-04 山东大学 Device and process for filling aggregate into stratum cavities through surface drilling
CN103161405A (en) * 2013-03-03 2013-06-19 中国矿业大学 Sleeve tube isolating layer shuttered zone method of down hole detecting and placing high pressure karst water drilling construction for mine
WO2015168972A1 (en) * 2014-05-07 2015-11-12 中国矿业大学 Method for filling open stope with aeolian sand in shallow coal seam in western desertified mining areas
CN105822344A (en) * 2015-01-09 2016-08-03 四川省科建煤炭产业技术研究院有限公司 Gob-side entry retaining gob stowing bearing method
CN109578070A (en) * 2018-12-14 2019-04-05 安徽马钢罗河矿业有限责任公司 Hole method is looked in a kind of filling borehole bottom

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102536317A (en) * 2012-01-20 2012-07-04 山东大学 Device and process for filling aggregate into stratum cavities through surface drilling
CN102536317B (en) * 2012-01-20 2014-06-18 山东大学 Device and process for filling aggregate into stratum cavities through surface drilling
CN103161405A (en) * 2013-03-03 2013-06-19 中国矿业大学 Sleeve tube isolating layer shuttered zone method of down hole detecting and placing high pressure karst water drilling construction for mine
CN103161405B (en) * 2013-03-03 2015-07-29 中国矿业大学 Mine underground visits the casing off stratum crushing band method of putting high pressure karst water drilling construction
WO2015168972A1 (en) * 2014-05-07 2015-11-12 中国矿业大学 Method for filling open stope with aeolian sand in shallow coal seam in western desertified mining areas
CN105822344A (en) * 2015-01-09 2016-08-03 四川省科建煤炭产业技术研究院有限公司 Gob-side entry retaining gob stowing bearing method
CN109578070A (en) * 2018-12-14 2019-04-05 安徽马钢罗河矿业有限责任公司 Hole method is looked in a kind of filling borehole bottom
CN109578070B (en) * 2018-12-14 2020-04-14 安徽马钢罗河矿业有限责任公司 Method for filling hole-finding at bottom of drill hole

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Granted publication date: 20121024

Termination date: 20150120

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