CN108979531A - A kind of foam concrete grouting system and method for the prevention and treatment of mine collapse hole - Google Patents
A kind of foam concrete grouting system and method for the prevention and treatment of mine collapse hole Download PDFInfo
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- CN108979531A CN108979531A CN201811178761.0A CN201811178761A CN108979531A CN 108979531 A CN108979531 A CN 108979531A CN 201811178761 A CN201811178761 A CN 201811178761A CN 108979531 A CN108979531 A CN 108979531A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000002265 prevention Effects 0.000 title claims abstract description 22
- 238000005553 drilling Methods 0.000 claims abstract description 135
- 239000002775 capsule Substances 0.000 claims abstract description 86
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000002002 slurry Substances 0.000 claims abstract description 25
- 238000007569 slipcasting Methods 0.000 claims abstract description 24
- 238000012544 monitoring process Methods 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000003245 coal Substances 0.000 claims description 33
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 20
- 206010058109 Hangnail Diseases 0.000 claims description 18
- 238000000605 extraction Methods 0.000 claims description 17
- 239000002360 explosive Substances 0.000 claims description 10
- 238000005065 mining Methods 0.000 claims description 10
- 239000004567 concrete Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 210000005239 tubule Anatomy 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
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- 239000000126 substance Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 50
- 230000000694 effects Effects 0.000 description 6
- 241001074085 Scophthalmus aquosus Species 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 3
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of foam concrete grouting systems for the prevention and treatment of mine collapse hole, crawler type hydraulic drilling rig including adjustable inclination angle, watt level, the system further include set lever apparatus, inflation or water filling capsule apparatus, inflation or water filling and its monitoring and feedback device, to the grouting device of collapse hole position slip casting；Invention additionally discloses a kind of foam concrete grouting methods for the prevention and treatment of mine collapse hole, it include: after moving back bar, loop bar conveys again, exits outer bar, to sealing of hole after capsule inflation or water filling, the conveying of foam concrete slurries, the initial set of waiting foam concrete slurries.The present invention uses the foam concrete of chemical blowing process production, and good permeability, intensity is high, at low cost；Capsule is inflatable, and has good flexibility, can be used for the drilling of different pore size, different angle, different coals quality, therefore can be used for the mine of various geology, practical.
Description
Technical field
The present invention relates to gas drainage field of engineering technology, especially a kind of foam concrete for the prevention and treatment of mine collapse hole
Grouting system and method.
Background technique
The calorific value of coal bed gas is 2-5 times of general coal, the calorific value of 1 cubic metre of pure coal bed gas be equivalent to 1.13kg gasoline,
1.21kg standard coal, calorific value is suitable with natural gas, can be mixed with natural gas it is defeated mixed, and burn after it is very clean, hardly
Any exhaust gas is generated, is first-class industry, chemical industry, power generation and resident living fuel.Coal bed gas air concentration reaches 5%-16%
When, meeting open fire will explode, this is the root of Gas Explosion Accidents in Coal Mines.Coal bed gas is directly discharged in atmosphere, greenhouse effect
It should be about 21 times of carbon dioxide, it is extremely strong to ecological environment destruction.If first exploiting coal bed methane, coal mine gas before coal mining
Rate of explosion will reduce by 70% to 85%.The development and utilization of coal bed gas have --- and clear energy sources, generation commercial interest etc. are more at one stroke
The effect of obtaining.
Currently, mash gas extraction most common method in China's is taken out using the split mining face coal-bed gas that drills is pre- in advance.
Since coal mass strength is smaller than rock stratum, this coal bed drilling is mostly air or hydraulic slag discharging, and hole inner support pressure is very small, in addition
It is influenced by factors such as crustal stress, coal seam gas-bearing capacity and coal mass strengths, weak seam gas drainage hole easily deforms very when creeping into
To collapsing, causes to embrace and bore.In addition, the hole ambient stress quadratic distribution due to caused by recovery activity, will cause hole surrounding medium position
Deformation is moved, adopts collapsing after further resulting in Completion of Drilling Hole.The channel for blocking Gas and flowing, has seriously affected gas
Extraction efficiency strongly limits the process that gas pumping effect reaches standard, increases Gas Disaster risk when coal mining.
Therefore, borehole stability Journal of Sex Research has a very important significance.
Therefore, the prevention and treatment of drilling collapse hole is always one of the great difficult problem that coal bed drilling needs to solve in the process.Under in drilling rod
The method of casing has obtained during practical coal bed drilling as a kind of effective prevention and treatment soft seam drilling collapse hole technology
Actual application is arrived, but its construction cost is big, complex process, is unfavorable for being widely popularized.And in actual application by
In drilling collapse hole, screen casing hole is blocked, causes practical extracting result unsatisfactory.Therefore, a set of feasible collapse hole prevention and treatment is established
Method can further improve gas drainage efficiency, significant to coal mine production safety.Currently, the spy for foam concrete
Rope and application consider the effectiveness of its high-strength light, insulation mostly, study the problem of its gas permeability less, therefore, need
It improves and steeps mixed concrete in the deficiency of this aspect.
Summary of the invention
The invention aims to solve the deficiencies in the prior art, a kind of bubble for the prevention and treatment of mine collapse hole is provided
Foam concrete grouting system and method, structure is simple, and design rationally, utilizes " a two stifled notes " technology to block collapse hole section and drill,
Then circulation of the exact position slip casting without influencing gas in non-collapse hole section is carried out on collapse hole section, has ensured gas to the full extent
Extraction efficiency, and the foam concrete after laboratory proportion changes, greatly improve in terms of gas permeability, can be applied to not
Coal mine under the conditions of, it is adaptable, it is low in cost, it is widely used.
In order to achieve the above objectives, the present invention is implemented according to following technical scheme:
A kind of foam concrete grouting system for the prevention and treatment of mine collapse hole, including adjustable inclination angle, watt level
Crawler type hydraulic drilling rig, the hydraulic drill rig include fuselage, crawler belt, cushion cap, stand, motor, outer drilling rod and interior drilling rod；The system
It further include set lever apparatus, inflation or water filling capsule apparatus, inflation or water filling and its monitoring and feedback device, to the slip casting of collapse hole position
Grouting device；
The set lever apparatus includes the outer bar being threadedly coupled with outer drill rod end, with interior drill rod end is threadedly coupled and is nested with
In the interior bar in outer bar, the front end of outer bar be equipped with can closed type drill bit, the front end of interior bar is screen casing, the installation of screen casing front end outer wall
Have a hangnail, the hangnail can closed type drill bit open when for through can closed type drill bit；
The inflation or water filling capsule apparatus include two adjacent capsules being placed on screen casing；
The inflation or water filling and its monitoring and feedback device include the pump, defeated for inflating or filling the water into two capsules
Supply gas body or water enters the tubule of two capsules and control gas and water pass in and out the valves of two capsules, and monitoring and feedback two
The flowmeter and pressure gauge of capsule pressure, the tubule are axially fixed in the inner wall of interior bar upper end, and in two glue
Capsule position is inscribed in two capsules and is equipped with air inlet or inlet opening, and the flow, meter pressure gauge are mounted on and are placed in mine drilling
On outer tubule；
The grouting device to the slip casting of collapse hole position includes in the Grouting Pipe and two capsules of grouting pump and conveying slurries
Between with screen casing in one section of explosive valve, interior screen casing outer wall is run through in Grouting Pipe front end, and explosive valve is mounted in Grouting Pipe front end, institute
It states Grouting Pipe front end and is located at explosive valve one end, slip casting pipe end is connect with the grouting pump being placed in outside mine drilling.
Further, the outer bar, interior bar are formed by several, upper outer bar, an interior bar respectively with next outer bar, interior
Bar is connected through a screw thread, and an interior bar of the front end is screen casing.
Further, check valve is equipped at the air inlet connecting with two capsules or inlet opening.
In addition, the present invention also provides a kind of foam concrete grouting method for the prevention and treatment of mine collapse hole, including it is following
Step:
Step 1: loop bar conveys again after moving back bar: hydraulic drill rig punching, which retreats, bores, and hangnail is mounted on screen casing, then will
Screen casing is threadedly connected on special drilling machine, installation can closed type three-wing bit in first outer bar, by first outer rod set
Rear thread is connected on drilling machine outside screen casing, starts drilling machine, after loop bar deeply drills, is stopped drilling machine, is unloaded screen casing and first
Root outer bar connects first capsule and screen casing, and second outer rod set is connected in first outer bar outside first capsule, then
It is secondary that loop bar is connected on drilling machine, start drilling machine, after second loop bar deeply drills, stops drilling machine, by loop bar from drilling machine
It unloads, connection is used for the Grouting Pipe of slip casting, rod set outside third root is connected to second outer bar outside slip casting section interior bar, by loop bar
Be connected to drilling machine, start drilling machine, after third root loop bar deeply drill, stop drilling machine, unload loop bar, connect second capsule and
4th outer rod set is connected to third root outer bar by slip casting section interior bar outside second capsule, connects loop bar and drilling machine, and starting is bored
Machine stops drilling machine, unloads loop bar after the 4th loop bar deeply drills, and first common interior bar is installed after second capsule,
First outer bar is installed, loop bar and drilling machine are connected, starts drilling machine；Above step is repeated, until loop bar is deep into mine drilling
Collapse hole fragment position, is again started up drilling machine, allows hangnail to pass through three-wing bit and penetrates in coal seam, slightly recession drilling rod, hangnail is allowed to fix
In coal wall；
Step 2: exiting outer bar: outer bar being unloaded from drilling machine, interior bar is unloaded from drilling machine, then outer bar is connected to
Drilling machine starts drilling machine, reversely rotates, and after last root outer bar exits drilling, stops drilling machine, last root outer bar is unloaded underlying
In tunnel ground, drilling machine and second from the bottom outer bar are connected, is again started up drilling machine reverse rotation；Above step is repeated, until moving back
Out until all outer bars；
Step 3: inflating or filling the water to capsule: according to the concrete condition of underground, capsule is inflatable or fills the water, and first will
Snorkel or water injection pipe and the tracheae or water pipe of underground connect, and open end valve, and gas or water flow is allowed to pass through snorkel or note
Water pipe is transported in capsule, is calculated the volume for being filled with required gas and water flow in capsule in advance, is observed by gas flowmeter, etc.
The gas and water flow volume inputted in capsule is when precalculated volume, rotating valve, reduces the rate of gas transmission or water filling, observes gas
The variation of pressure table illustrates that the expansion of capsule meets with obstruction, that is, is expanded into borehole wall until barometric pressure becomes larger suddenly
Position, close the valve of end, prevent and treat gas and water reflux, stop conveying gas or water flow；
Step 4: the conveying of foam concrete slurries: prepared by lime, gypsum, aluminium powder, oxygen in mining blender
The foam concrete slurries for changing calcium, accelerator composition, mining blender is connect with grouting pump, then grouting pump is soft by variable diameter
Pipe is connect with Grouting Pipe, starts grouting pump, the foam concrete slurries that injection prepares in Grouting Pipe, according to liquid level in blender
Down position judge grouting amount number, wait after reaching 0.2 cube of estimated grouting amount, stop slip casting；
Step 5: sealing of hole after the initial set of waiting foam concrete slurries: standing half an hour, wait until foam concrete slurries
Initial set is completed, and then drainage tube is connected with hole sealing tube, under the double action of methane pressure gradient and extraction negative pressure, collapse hole section
Methane gas later passes through two ways by extraction, first is that by the gap of foam concrete by extraction, second is that passing through screen casing
Again by interior bar by extraction.
Compared with prior art, the invention has the following advantages that
1, structure of the invention is simple, and design rationally, is realized and easy to use and operate.
2, the present invention is injecting foam concrete by pinpointing to drilling collapse hole section, to not influence other section of gas just
Often circulation has ensured the circulation of gas in drilling to the full extent, has reduced the decaying of methane pressure gradient.
3, the present invention proposes the scheme of new prevention and treatment drilling collapse hole on the basis of drilling and sealing in mine, improves existing
Drilling collapse hole prevention and treatment technique, improve the extraction efficiency of the pre- extraction of collapse hole drilling gas.
4, the present invention uses the foam concrete of autonomous Design completely, which uses chemical blowing process, relatively
For traditional physical blowing method to be foamed using foaming machine, cost is greatly saved, improves economic benefit, and compare
In traditional foaming machine mostly use electric power foam and cannot very well be suitable for underground condition, while foaming machine itself due to figure,
Weight is larger, is unfavorable for for transporting up and down, chemical blowing process simple possible is easy to carry, and with with matching, component is adjustable, greatly
Cost is saved greatly, improves economic benefit, the simplicity for increasing the convenience of transport and using.
In conclusion the configuration of the present invention is simple, design are rationally, the technique and stream of foaming have been simplified by chemical blowing process
Journey is suitable for engineering site, and easy to use and operate, practical, using effect is good, convenient for promoting the use of.
Detailed description of the invention
Fig. 1 is the schematic diagram for carrying out slip casting after capsule of the present invention closure drills to Grouting Pipe.
Fig. 2 is the drilling machine schematic diagram of present invention conveying loop bar.
Fig. 3 is the relation schematic diagram of the inside and outside bar of the present invention and tracheae and Grouting Pipe.
Fig. 4 is flow chart of the method for the present invention.
Specific embodiment
The invention will be further described combined with specific embodiments below, in the illustrative examples and explanation of the invention
For explaining the present invention, but it is not as a limitation of the invention.
As shown in Figure 1-Figure 3, a kind of foam concrete grouting system for the prevention and treatment of mine collapse hole of the present embodiment, including
Adjustable inclination angle, watt level crawler type hydraulic drilling rig 19, the hydraulic drill rig 19 include fuselage 13, crawler belt 12, cushion cap
18, stand 17, motor 16, outer drilling rod 15 and interior drilling rod 14；The system further includes set lever apparatus 24, inflation or water filling capsule dress
Set, inflate or fill the water and its monitor and feedback device, to the grouting device of collapse hole position slip casting；
The set lever apparatus 24 includes that the outer bar 20 connecting with outer 15 end thread of drilling rod and interior 14 end thread of drilling rod connect
The interior bar 21 in outer bar 20 is connect and is placed on, interior bar 21 is antistatic, fire-retardant pvc pipe, and the front end of outer bar 20, which is equipped with, to be closed
Box-like drill bit 10, in addition, outer bar 20, interior bar 21 are formed by several, a upper outer bar 20, interior bar 21 are outer with next respectively
Bar 20, interior bar 21 are connected through a screw thread, and an interior bar 21 of the front end is screen casing, and screen casing front end outer wall is equipped with hangnail
11, the hangnail 11 can closed type three-wing bit 10 open when for through can closed type drill bit 10, when hangnail 11 squeezes into mine
Rear distraction in well drill hole inner wall is fixed and successively exits outer bar 20 after interior bar 21,；
The inflation or water filling capsule apparatus include two adjacent first be placed on screen casing capsules 6 and second glue
Capsule 8；
The inflation or water filling and its monitoring and feedback device include being used into first capsule 6 and second capsule 8
The pump of inflation or water filling, conveying gas or water enter the tubule 22 of first capsule 6 and second capsule 8 and control gas and water
The valve of first capsule 6 and second capsule 8, and the flowmeter and pressure gauge of monitoring and feedback capsule pressure are passed in and out,
The tubule 22 is axially fixed in the inner wall of 21 upper end of interior bar, and inscribed in first capsule 6 and second 8 position of capsule
In first capsule 6 and second capsule 8 and it is equipped with air inlet or inlet opening 221, the flow, meter pressure gauge are mounted on and are placed in
On tubule 22 outside mine drilling；
The grouting device to the slip casting of collapse hole position includes the Grouting Pipe 23 and first glue of grouting pump and conveying slurries
Screen casing 26 in one section among capsule 6 and second capsule 8 with explosive valve, Grouting Pipe 23 are axially fixed in 21 lower end of interior bar
Interior screen casing outer wall is run through in inner wall, 23 front end of Grouting Pipe, and explosive valve 25 is mounted in 23 front end of Grouting Pipe, 23 front end of Grouting Pipe
Positioned at explosive valve one end, 23 end of Grouting Pipe is connect with the grouting pump being placed in outside mine drilling.When grouting pressure reaches explosive valve
When the explosion limit, explosive valve pops, and slurries flow into the drilling of collapse hole section 7, and after solidification, expansion jacks up collapse hole section 7 and drills.
In actual use, first can closed type three-wing bit 10 be installed in first outer bar 20, then by the hangnail of closure
11 are installed on screen casing, then fill in the screen casing for being mounted with hangnail 11 in outer bar 20.
It is equipped at the air inlet being connect in the present embodiment with first capsule 6 and second capsule 8 or inlet opening 221 unidirectional
Valve 9, after gas or water flow are transported in first capsule 6 and second capsule 8 by snorkel or water injection pipe, at this time because
The reason of check valve 9, can prevent gas or water flow from flowing back.
A kind of above-mentioned foam concrete grouting system for the prevention and treatment of mine collapse hole, the foam concrete are by real
Test the porous foam concrete with fine air permeability that room proportion is adjusted.
In actual use, since the air pressure of underground, temperature etc. and laboratory are not fully identical, and these all can be to foam
The final gas permeability of concrete and intensity have some impact on, and can carry out the test of micro proportion at the scene, after being adjusted to best,
It can carry out the proportion of practical slip casting.
Above-mentioned a kind of foam concrete grouting system for the prevention and treatment of mine collapse hole, according to the change of scene drilling coal output
Change the position for determining collapse hole, carries out secondary-confirmation during conveying Grouting Pipe 23 and entering drilling.
In actual use, the coal dust that should be drilled out when a distance is drilled with container access, and accurate weighing is carried out, claim
Interval same distance when amount, using every drilling rod or every two drilling rod as boundary, time when connecing coal dust every time should keep equal, to the greatest extent may be used
Can influence of the reductions other factors to unit time coal output, go out coal dust amount if encountering the unit time when piercing for the second time and dash forward
So increased place with it is significantly different when piercing for the first time, should be subject to the case where encountering when piercing for the second time.
When carrying out slip casting using the foam concrete grouting system for the prevention and treatment of mine collapse hole of examples detailed above, such as his 4 institutes
Show, the specific steps are as follows:
Step 1: loop bar conveys again after moving back bar: the punching of hydraulic drill rig 19, which retreats, bores, and hangnail 11 is mounted on screen casing,
Screen casing is threadedly connected on special drilling machine 19 again, installation can closed type three-wing bit 10 in first outer bar 20, by
One 20 sets of outer bar outside screen casing rear thread be connected on drilling machine 19, start drilling machine 19, wait cover lever apparatus 24 deeply drilling after, stop
Screen casing and first outer bar 20 are unloaded in only drilling machine 19, connect first capsule 6 and screen casing, by second 20 sets of outer bar first
It is connected in first outer bar 20 outside a capsule 6, set lever apparatus 24 is connected on drilling machine 19 again, starts drilling machine 19, to the
Two set lever apparatus 24 deeply after drilling, stop drilling machine 19, set lever apparatus 24 are unloaded from drilling machine 19, connection is for slip casting
Grouting Pipe 23 is connected to second outer bar 20 for 20 sets of third root outer bar outside slip casting section interior bar 21, and set lever apparatus 24 is connected
In drilling machine 19, start drilling machine 19, after third root set lever apparatus 24 deeply drilling, stops drilling machine 19, unload set lever apparatus 24, even
Second capsule 8 and 5 interior bar 21 of slip casting section are connect, is connected to third root outer bar outside second capsule 8 for the 4th 20 sets of outer bar
20, connector sleeve lever apparatus 24 and drilling machine 19, starting drilling machine 19 stop drilling machine 19 after the 4th set lever apparatus 24 deeply drilling,
Set lever apparatus 24 is unloaded, first common interior bar 21 is installed after second capsule 8, first outer bar 20 is installed, connects loop bar
Device 24 and drilling machine 19 start drilling machine 19；Above step is repeated, until set lever apparatus 24 is deep into the collapse hole section 7 of mine drilling
Position is again started up drilling machine 19, allows hangnail 11 to pass through three-wing bit 10 and penetrates in coal seam, slightly recession drilling rod, makes hangnail 11 solid
Due in coal wall；
It should be noted that drilling due to being beaten with mining drilling machine on coal wall, former casings can be straight
It connects and manually fills in drilling, when encountering obvious resistance when until filling in, then the machine of drilling is used to be pierced.
Step 2: exiting outer bar: outer bar 20 being unloaded from drilling machine 19, interior bar 21 is unloaded from drilling machine 19, then will be outer
Bar 20 is connected to drilling machine 19, starts drilling machine 19, reversely rotates, and after last root outer bar 20 exits drilling, stops drilling machine 19, will
Last root outer bar 20, which unloads, is placed in tunnel ground, and it is anti-to be again started up drilling machine 19 for connection drilling machine 19 and second from the bottom outer bar 20
To rotation；Above step is repeated, until exiting all outer bar 19；
The vibration generated when in actual use, due to moving back brill may make interior bar occur moving back in the borehole distance after boring with
The case where initial range deviates, the occurrence of in order to avoid this, following two method, which can be used, and reduce influences: 1, drilling
When keep drilling rod distance slightly remoter than preset distance；2, brill is slowly moved back using small-power when moving back brill, smoothly exits brill as far as possible
Bar.
Step 3: inflating or filling the water to capsule: according to the concrete condition of underground, first capsule 6 and second capsule 8 can
Snorkel or water injection pipe 4, connect by inflation or water filling with the tracheae of underground or water pipe 4 first, and opening end valve allows gas
Or water flow is transported in first capsule 6 and second capsule 8 by snorkel or water injection pipe 4, calculates be filled with first in advance
The volume of required gas and water flow, is observed by gas flowmeter in capsule 6 and second capsule 8, waits first capsule 6 and
The gas and water flow volume inputted in two capsules 8 is when precalculated volume, rotating valve, reduces the rate of gas transmission or water filling,
Barometric variation is observed, until barometric pressure becomes larger suddenly, illustrates the swollen of first capsule 6 and second capsule 8
It is swollen to meet with obstruction, that is, it is expanded into the position of borehole wall, closes the valve of end, gas and water reflux is prevented and treated, stops conveying
Gas or water flow；
In actual use, inflation or water filling be can be used according to the actual conditions of underground, when inflation, due to the pressure of coal wall,
It should continue to pour a certain amount of gas after pressure gauge mutation, so that capsule can be very good to squeeze coal wall, play and prop up coal wall
With the effect for blocking drilling, when water filling, since the diameter of tracheae is too small, the bonding strength between tracheae is limited, because to the greatest extent may be used
The reduction water flow of energy reduces water flow to the pressure of tracheae.
Step 4: the conveying of foam concrete slurries: prepared by lime, gypsum, aluminium powder, oxygen in mining blender
The foam concrete slurries for changing calcium, accelerator composition, mining blender is connect with grouting pump, then grouting pump is soft by variable diameter
Pipe is connect with Grouting Pipe 23, starts grouting pump, the foam concrete slurries that injection prepares in Grouting Pipe 23, according in blender
Liquid level down position judge grouting amount number, wait after reaching 0.2 cube of estimated grouting amount, stop slip casting；
In actual use, being commonly used due to blender is difficult to accomplish to clean out, and can use biggish polybag or oil
Cloth place mat carries out the proportion of concrete slurry again in grouting pump, prevent concrete slurry match during, concrete slurry with
Outmoded concrete solid on blender machine wall reacts to influence the performance of final foam concrete.For coal wall
Irregular deformation, capsule can not completely block drilling between gap, therefore when injecting foam concrete slurries than
Practical calculation amount is injected a certain amount of more.
Step 5: sealing of hole after the initial set of waiting foam concrete slurries: standing half an hour, wait until foam concrete slurries
Initial set is completed, and then drainage tube 2 is connected with hole sealing tube 1, under the double action of methane pressure gradient and extraction negative pressure, collapse hole
Methane gas after section 7 passes through two ways by extraction, first is that by the gap of foam concrete by extraction, second is that passing through sieve
Pipe is again by interior bar 21 by extraction.
The limitation that technical solution of the present invention is not limited to the above specific embodiments, it is all to do according to the technique and scheme of the present invention
Technology deformation out, falls within the scope of protection of the present invention.
Claims (4)
1. a kind of foam concrete grouting system for the prevention and treatment of mine collapse hole, the shoe including adjustable inclination angle, watt level
Belt type hydraulic drilling machine (19), the hydraulic drill rig (19) include fuselage (13), crawler belt (12), cushion cap (18), stand (17), motor
(16), outer drilling rod (15) and interior drilling rod (14)；It is characterized by: the system further includes set lever apparatus (24), inflation or water filling glue
Bag apparatus, inflation or water filling and its monitoring and feedback device, the grouting device (3) to the slip casting of collapse hole position；
The set lever apparatus (24) includes the outer bar (20) connecting with outer drilling rod (15) end thread and interior drilling rod (14) end spiral shell
Line connects and the interior bar (21) that is placed in outer bar (20), the front end of outer bar (20) be equipped with can closed type drill bit (10), interior bar
(21) front end is screen casing, and screen casing front end outer wall is equipped with hangnail (11), the hangnail (11) can closed type drill bit (10) beat
Being used to run through when opening can closed type drill bit (10)；
The inflation or water filling capsule apparatus include two adjacent capsules (6,8) being placed on screen casing；
The inflation or water filling and its monitoring and feedback device include being used to the pump of inflation or water filling, conveying into capsule (6,8)
Gas or water enter the tubule (22) of capsule (6,8) and the valve of control gas and water disengaging capsule (6,8), and monitoring and feedback
The flowmeter and pressure gauge of capsule pressure, the tubule (22) are axially fixed in the inner wall of interior bar (21) upper end, and
Air inlet or inlet opening (221), the flow, meter pressure gauge installation are inscribed in capsule (6,8) and are equipped in capsule (6,8) position
On being placed in the tubule outside mine drilling (22)；
The grouting device (3) to the slip casting of collapse hole position includes the Grouting Pipe (23) and two glue of grouting pump and conveying slurries
Screen casing (26) in one section among capsule (6,8) with explosive valve (25), Grouting Pipe (23) are axially fixed in interior bar (21) lower end
Inner wall, Grouting Pipe (23) front end runs through interior screen casing outer wall, and explosive valve (25) is mounted in Grouting Pipe (23) front end, Grouting Pipe
(23) end is connect with the grouting pump being placed in outside mine drilling.
2. the foam concrete grouting system according to claim 1 for the prevention and treatment of mine collapse hole, it is characterised in that: described
Outer bar (20), interior bar (21) are formed by several, a upper outer bar (20), interior bar (21) respectively with next outer bar (20),
Interior bar (21) is connected through a screw thread, and an interior bar (21) of the front end is screen casing.
3. the foam concrete grouting system according to claim 1 for the prevention and treatment of mine collapse hole, it is characterised in that: with two
Check valve (9) are equipped at the air inlet of a capsule (6,8) connection or inlet opening (221).
4. a kind of foam concrete grouting method for the prevention and treatment of mine collapse hole, which is characterized in that any using claim 1-3
The foam concrete grouting system for the prevention and treatment of mine collapse hole, the specific steps are as follows:
Step 1: loop bar conveys again after moving back bar: hydraulic drill rig (19) punching, which retreats, bores, and hangnail (11) is mounted on screen casing,
Screen casing is threadedly connected on special drilling machine (19) again, installation can closed type three-wing bit (10) in first outer bar (20)
On, first outer bar (20) is covered into the rear thread outside screen casing and is connected on drilling machine (19), is started drilling machine (19), it is deep to loop bar (24)
After entering drilling, stops drilling machine (19), unload screen casing and first outer bar (20), first capsule (6) and screen casing are connected, by second
Root outer bar (20) is covered to be connected on first outer bar (20) outside first capsule (6), and loop bar (24) is connected to drilling machine again
(19) on, start drilling machine (19), after second loop bar (24) deeply drilling, stop drilling machine (19), by loop bar (24) from drilling machine
(19) it is unloaded on, connection is used for the Grouting Pipe (23) of slip casting, and third root outer bar (20) is covered and is connected outside in slip casting section interior bar (21)
In second outer bar (20), loop bar (24) is connected to drilling machine (19), is started drilling machine (19), is deeply bored to third root loop bar (24)
Kong Hou stops drilling machine (19), unloads loop bar (24), connect second capsule (8) and slip casting section (5) interior bar (21), by the 4th
Outer bar (20) is covered is connected to third root outer bar (20) outside second capsule (8), and connection loop bar (24) and drilling machine (19), starting are bored
Machine (19) stops drilling machine (19) after the 4th loop bar (24) deeply drilling, loop bar (24) is unloaded, after second capsule (8)
First common interior bar (21) is installed, first outer bar (20) is installed, connects loop bar (24) and drilling machine (19), starts drilling machine
(19) ... above step is repeated, until loop bar (24) is deep into collapse hole section (7) position of mine drilling, is again started up drilling machine
(19), it allows hangnail (11) to pass through three-wing bit (10) to penetrate in coal seam, slightly recession drilling rod, hangnail (11) is allowed to be fixed on coal wall
In；
Step 2: exiting outer bar: outer bar (20) is unloaded from drilling machine (19), interior bar (21) is unloaded from drilling machine (19), then
Outer bar (20) is connected to drilling machine (19), is started drilling machine (19), is reversely rotated, after last root outer bar (20) exits drilling,
Stop drilling machine (19), last root outer bar (20) is unloaded and is placed in tunnel ground, connection drilling machine (19) and second from the bottom outer bar
(20), it is again started up drilling machine (19) reverse rotation；Above step is repeated, until exiting all outer bars (19)；
Step 3: inflating or filling the water to capsule: according to the concrete condition of underground, capsule (6,8) is inflatable or fills the water, and first will
Snorkel or water injection pipe (4) are connect with the tracheae of underground or water pipe (4), open end valve, allow gas or water flow by supplying gas
Pipe or water injection pipe (4) are transported in capsule (6,8), calculate the volume for being filled with required gas and water flow in capsule (6,8) in advance, are led to
Gas flowmeter observation is crossed, waits the gas inputted in capsules (6,8) and water flow volume when precalculated volume, rotating valve subtracts
The rate of small gas transmission or water filling observes barometric variation, until barometric pressure becomes larger suddenly, illustrates capsule (6,8)
Expansion meet with obstruction, that is, be expanded into the position of borehole wall, close the valve of end, prevent and treat gas and water reflux, stop
Convey gas or water flow；
Step 4: the conveying of foam concrete slurries: prepared by lime, gypsum, aluminium powder, oxidation in mining blender
The foam concrete slurries of calcium, accelerator composition, mining blender is connect with grouting pump, then grouting pump is passed through variable diameter hose
It is connect with Grouting Pipe (23), starts grouting pump, the foam concrete slurries that injection prepares in Grouting Pipe (23), according to blender
Middle liquid level down position judge grouting amount number, wait after reaching 0.2 cube of estimated grouting amount, stop slip casting；
Step 5: sealing of hole after the initial set of waiting foam concrete slurries: half an hour is stood, until the initial set of foam concrete slurries
It completes, then drainage tube (2) is connected with hole sealing tube (1), under the double action of methane pressure gradient and extraction negative pressure, collapse hole
Methane gas after section (7) passes through two ways by extraction, first is that by the gap of foam concrete by extraction, second is that passing through
Screen casing passes through interior bar (21) by extraction again.
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| CN2018108125658 | 2018-07-23 | ||
| CN201810812565 | 2018-07-23 |
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| CN114278252A (en) * | 2021-12-20 | 2022-04-05 | 中煤地质集团有限公司 | Water stopping equipment for geological water pumping test and use method |
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