CN110924984A - Tunnel grouting equipment and process - Google Patents
Tunnel grouting equipment and process Download PDFInfo
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- CN110924984A CN110924984A CN201911207623.5A CN201911207623A CN110924984A CN 110924984 A CN110924984 A CN 110924984A CN 201911207623 A CN201911207623 A CN 201911207623A CN 110924984 A CN110924984 A CN 110924984A
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000008569 process Effects 0.000 title claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims abstract description 52
- 238000005507 spraying Methods 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000428 dust Substances 0.000 claims abstract description 31
- 238000003825 pressing Methods 0.000 claims abstract description 22
- 230000000694 effects Effects 0.000 claims abstract description 20
- 239000003595 mist Substances 0.000 claims abstract description 12
- 238000009412 basement excavation Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000002689 soil Substances 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000007664 blowing Methods 0.000 claims description 9
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical class [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 5
- 239000011440 grout Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 abstract description 8
- 238000004140 cleaning Methods 0.000 abstract description 3
- 239000004576 sand Substances 0.000 description 17
- 238000010276 construction Methods 0.000 description 9
- 238000007569 slipcasting Methods 0.000 description 9
- 239000002131 composite material Substances 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 239000004575 stone Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- 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
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Lining And Supports For Tunnels (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses tunnel grouting equipment and a tunnel grouting process, which comprise a blowpipe, wherein one end of the blowpipe is communicated with a gas compressor, a dust-settling mechanism is arranged on the blowpipe, the dust-settling mechanism comprises a buckle cover fixed on the blowpipe, the opening of the buckle cover faces to the direction of an air outlet of the blowpipe, a spraying mechanism is arranged on the buckle cover, and the spraying mechanism sprays water mist to the inner cavity of the buckle cover; the buckle cover is fixed with a fixed filter screen, the fixed filter screen is obliquely arranged, the buckle cover is provided with a yielding hole, the buckle cover is hinged with a baffle which covers the yielding hole, the baffle is provided with a pressing mechanism, and the buckle cover is provided with an overflow hole. The invention has the effect of reducing dust emission during grouting hole cleaning.
Description
Technical Field
The invention relates to the technical field of tunnel construction reinforcement, in particular to tunnel grouting equipment and a tunnel grouting process.
Background
With the continuous development of national economic construction in China, engineering projects are increasingly complex, and various bad engineering geological conditions bring many troublesome problems for normal construction and operation of underground engineering, wherein the problems of seepage, gushing and outburst of surface water and underground water are quite common and have great harm after engineering excavation. The treatment of the geological disasters generally adopts a grouting method, and the grouting reinforcement is firstly carried out on the area near the construction, so that the safety and the high-efficiency expansion of the project are ensured during the construction.
The Chinese patent with the publication number of CN103993607B discloses a steel flower pipe control grouting anti-slip composite structure and a rapid construction method thereof, and the steel flower pipe control grouting anti-slip composite structure consists of a steel flower pipe pile, a composite soil body between piles and a pipe top frame. The pipe top frame consists of a beam and a longitudinal beam which are poured by reinforced concrete and is fixed on a side slope platform or embedded in a slope body; the top of the steel perforated pipe is welded with the longitudinal stressed steel bar in the frame and is integrally cast in the frame beam; and forming a composite soil body between the piles by the soil body between the steel flower pipe piles under the action of cleavage grouting. The steel flower pipe pile, the composite soil body among the piles and the pipe top frame form a composite structure to resist landslide thrust or soil pressure together. Compared with the traditional steel perforated pipe pile, the steel perforated pipe control grouting anti-slip composite structure obviously improves the bending resistance and the shearing resistance and can resist larger landslide thrust or soil pressure.
The above prior art solutions have the following drawbacks: the stratum exposes the condition, easily causes the drift soil, the drift sand, causes tunnel top and lateral wall country rock unstability that collapses, consequently must consolidate the process to the stratum before the construction, sets up the slip casting hole on the stratum, uses the tuber pipe to blow off the grit that scatters in the slip casting hole, inserts the slip casting pipe in the slip casting hole and to slip casting intraductal slip casting, when the tuber pipe blows off the slip casting hole, the downthehole dust that blows off of slip casting all has very big influence to site environment and operating personnel.
Disclosure of Invention
The invention aims to provide tunnel grouting equipment and a tunnel grouting process, which have the effect of reducing dust during grouting hole cleaning.
The technical purpose of the invention is realized by the following technical scheme:
a tunnel grouting device comprises a blowpipe, wherein one end of the blowpipe is communicated with a gas compressor, a dust falling mechanism is arranged on the blowpipe, the dust falling mechanism comprises a buckle cover fixed on the blowpipe, the opening of the buckle cover faces the direction of an air outlet of the blowpipe, a spraying mechanism is arranged on the buckle cover, and the spraying mechanism sprays water mist to the inner cavity of the buckle cover; the buckle cover comprises a rear plate, an upper side plate and a lower side plate are fixedly arranged at the upper end and the lower end of the same surface of the rear plate respectively, and two vertical side plates fixedly arranged on the rear plate are arranged between the upper side plate and the lower side plate; a fixed filter screen positioned between the blowpipe and the lower side plate is fixed on the buckle cover, the fixed filter screen is obliquely arranged, the vertical side plate is provided with a abdicating hole, a baffle plate for covering the abdicating hole is hinged on the vertical side plate, and a pressing mechanism is arranged on the baffle plate and is used for pressing and connecting the baffle plate and the vertical side plate; the buckle cover comprises a front plate fixed on the lower side plate and a front plate fixed on the vertical side plate, the front plate is located below the blowpipe and seals an area between the fixed filter screen and the lower side plate, the buckle cover is provided with an overflow hole, and the overflow hole is located between the filter screen and the lower side plate.
By adopting the technical scheme, high-pressure gas is blown into the grouting hole by the blowpipe, the high-pressure gas drives gravels and loose soil in the grouting hole to fly out of the orifice of the grouting hole and enter the buckle cover, the spraying mechanism on the buckle cover is opened, water mist is sprayed into the buckle cover by the spraying mechanism, the water mist is contacted with dust in the buckle cover to adsorb the dust, water is accumulated on the lower side plate of the inner cavity of the buckle cover, the dust in the buckle cover can be further adsorbed by the water on the lower side plate, when the water in the buckle cover is gradually increased, the water in the buckle cover flows out of the overflow hole, the continuous adsorption of the water on the lower side plate to the dust is ensured, and meanwhile, the air in the buckle cover can flow out of the buckle cover through the overflow hole;
when the grit is taken out from the injected hole by high-pressure gas, the grit gets into in the buckle closure, the grit falls on fixed filter screen, the mesh on the fixed filter screen blocks the grit and can hold the air current that has the dust and pass through, when the grit piles up more, hold-down mechanism opens, the grit on the fixed filter screen rolls along fixed filter screen from the hole of stepping down outside the buckle closure, hold-down mechanism is connected baffle and perpendicular curb plate pressure tightly once more, the dust that the ability effective absorption blowpipe blew out, reduce the dust diffusion that the blowpipe caused when clearing up the injected hole to the environmental pollution of job site.
The invention is further configured to: the spraying mechanism comprises a spraying pipe, one end of the spraying pipe is communicated with a pressure pump, the other end of the spraying pipe is connected with a spraying head fixed on the buckle cover, and the spraying head is fixed in an inner cavity of the buckle cover.
By adopting the technical scheme, the pressure pump extracts clean water and presses the clean water into the spray pipe, and high-pressure water in the spray pipe is sprayed out through the spray head, so that the inner cavity of the buckle cover is full of water mist, and the work of the spray mechanism is ensured.
The invention is further configured to: the pressing mechanism comprises a fixed magnet fixed on the vertical side plate, and a movable magnet which is mutually attracted with the fixed magnet is fixed on the baffle.
Through adopting above-mentioned technical scheme, when the effort that receives the grit as the baffle is greater than fixed magnet and acts on movable magnet's attraction, the grit promotes the baffle and rotates around baffle and the articulated department of buckle closure, make the grit can follow the buckle closure that steps down the hole outflow, because the baffle rotates the back, movable magnet and fixed magnet's distance increase, consequently its inter attraction's effort reduces, along with the grit on the fixed filter screen reduces, the effort of fixed filter screen to the baffle reduces, but the baffle still can keep the open mode, along with the grit further reduction, the baffle receives self action of gravity and fixed magnet to movable magnet's attraction to step down the hole and seal, realize that the automation of baffle is opened or is closed.
The invention is further configured to: sliding connection has movable filter screen on the buckle closure, the surface of movable filter screen downside board and the surface contact laminating of fixed filter screen curb plate down towards, the movable filter screen outside is provided with the movable frame, and two perpendicular curb plates are stretched out at the both ends of movable frame, be provided with the locking mechanism that the restriction movable frame removed on the perpendicular curb plate.
By adopting the technical scheme, the movable filter screen can be moved, the relative position between the fixed filter screen and the movable filter screen can be adjusted, so that the actual mesh size can be adjusted, the movable frame is tightly pressed by using the locking mechanism, and the relative position between the movable filter screen and the fixed filter screen is kept stable; when the meshes are blocked, the actual sizes of the meshes can be adjusted by moving the movable frame, so that the permeability of the meshes is kept.
The invention is further configured to: the movable frame is fixedly provided with a reinforcing rod, and the reinforcing rod is positioned on the surface of the movable filter screen, which faces away from the fixed filter screen.
Through adopting above-mentioned technical scheme, the stiffener can support the activity filter screen, improves the stability of activity filter screen.
The invention is further configured to: locking mechanism is including being fixed in the fixed plate on the perpendicular curb plate, wear to be equipped with the compression bar on the fixed plate, set firmly solid fixed ring on the compression bar, the cover is equipped with the pressure spring who is located between fixed plate and the solid fixed ring on the compression bar, the compression bar compresses tightly with the movable frame.
Through adopting above-mentioned technical scheme, the effort is exerted to fixed plate and solid fixed ring respectively at the pressure spring both ends, and the effort towards the fixed plate direction is exerted to the compression rod to the fixed ring to keep erecting the compressing tightly between curb plate and the buckle closure and being connected, keep the stability of fixed filter screen.
The invention is further configured to: the movable frame has been seted up towards compressing tightly the pole on the surface and has been held and compress tightly pole male activity groove, the activity groove interval sets up, and adjacent two clearance between the activity groove equals filter screen mesh length plus a definite value, and the integer multiple of this definite value equals filter screen mesh length.
Through adopting above-mentioned technical scheme, when the actual size of mesh needs to be adjusted, will compress tightly the pole and take out the back from the activity groove, remove the movable frame along movable frame and buckle closure sliding connection direction, make and compress tightly the pole and can insert other activity inslots, through inserting different activity grooves, can adjust out different actual mesh sizes, can realize the accurate adjustment of mesh size.
The invention is further configured to: an exhaust box is fixedly arranged on the buckle cover and is communicated with the inner cavity of the buckle cover through an overflow hole, an exhaust hole is formed above the exhaust box, and an overflow pipe is communicated with the exhaust box.
Through adopting above-mentioned technical scheme, the air in the buckle closure gets into the exhaust box behind the overflow hole, and the air of exhaust box ability can be discharged through the exhaust hole, and the flow of the interior air of buckle closure of being convenient for, overflow pipe can be with the water discharge of buckle closure apart from the position far away of slip casting hole, the site operation of being convenient for.
The invention is further configured to: comprises a steel frame fixed at a tunnel excavation port;
grouting holes are formed above the tunnel excavation port and are arranged above the excavation port at intervals along the annular direction, and the center line of the ring where the excavation port is located in the middle of the excavation port;
inserting one end of a blow pipe, which is back to the compressor, into the grouting hole to clean the grouting hole, and blowing off soft soil and gravels in the grouting hole;
inserting the advanced small conduit into the grouting hole, wherein a grout outlet is formed in the side surface of the advanced small conduit;
and injecting modified water glass into the advanced small conduit, and naturally solidifying the modified water glass to reinforce the stratum.
In conclusion, the beneficial effects of the invention are as follows:
1. blowing high-pressure gas into the grouting hole by a blowpipe, driving gravels and loose soil in the grouting hole to fly out of an orifice of the grouting hole and enter the buckle cover by the high-pressure gas, opening a spraying mechanism on the buckle cover, spraying water mist into the buckle cover by the spraying mechanism, contacting the water mist with dust in the buckle cover to adsorb the dust, accumulating water on a lower side plate of an inner cavity of the buckle cover, further adsorbing the dust in the buckle cover by the water on the lower side plate, and when the water in the buckle cover gradually increases, enabling the water in the buckle cover to flow out of an overflow hole, ensuring the continuous adsorption of the water on the lower side plate to the dust, and enabling the air in the buckle cover to flow out of the buckle cover through the overflow hole;
2. when the sand and stone are brought out from the grouting holes by high-pressure gas, the sand and stone enter the buckle cover, the sand and stone fall onto the fixed filter screen, meshes on the fixed filter screen block the sand and stone and can accommodate air flow with dust, when the sand and stone are accumulated more, the pressing mechanism is opened, the sand and stone on the fixed filter screen fall out of the buckle cover from the abdicating holes along the fixed filter screen, the pressing mechanism presses and connects the baffle plate and the vertical side plate tightly again, dust blown out by the blowpipe can be effectively absorbed, and the environmental pollution of the construction site caused by dust diffusion when the blowpipe cleans the grouting holes is reduced;
3. the movable filter screen is moved, the relative position between the fixed filter screen and the movable filter screen can be adjusted, so that the actual mesh size is adjusted, the movable frame is tightly pressed by using the locking mechanism, and the relative position between the movable filter screen and the fixed filter screen is kept stable; when the meshes are blocked, the actual sizes of the meshes can be adjusted by moving the movable frame, so that the permeability of the meshes is kept.
Drawings
FIG. 1 is a schematic diagram of an overall environment of use of the embodiment;
FIG. 2 is a schematic view of the entire structure of the embodiment;
FIG. 3 is a schematic structural view showing a pressing mechanism in the embodiment;
FIG. 4 is a schematic cross-sectional view of the venting box and the movable screen of the embodiment.
In the figure, 1, a drill rod; 2. blowing a pipe; 3. a dust falling mechanism; 31. covering; 311. a back plate; 312. an upper side plate; 313. a lower side plate; 314. erecting a side plate; 3141. a hole of abdication; 315. a front plate; 316. an overflow aperture; 32. a spraying mechanism; 321. a shower pipe; 322. a shower head; 33. fixing the filter screen; 34. a baffle plate; 35. a hold-down mechanism; 351. fixing a magnet; 352. a movable magnet; 4. a movable filter screen; 41. a movable frame; 411. a movable groove; 42. a reinforcing bar; 5. a locking mechanism; 51. a fixing plate; 52. a hold down bar; 53. a fixing ring; 54. a compression spring; 61. an exhaust box; 62. and (4) an overflow pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Examples
Referring to fig. 1 and 2, for the invention, a tunnel grouting device is disclosed, which comprises a blow pipe 2, a dust falling mechanism 3 is arranged on the blow pipe 2, the dust falling mechanism 3 comprises a buckle cover 31 fixed on the blow pipe 2, the opening of the buckle cover 31 faces the direction of an air outlet of the blow pipe 2, the buckle cover 31 comprises a rear plate 311, the rear plate 311 is a square plate, the upper end and the lower end of the same surface of the rear plate 311 are respectively and integrally formed with an upper side plate 312 and a lower side plate 313, two vertical side plates 314 fixed on the rear plate 311 are arranged between the upper side plate 312 and the lower side plate 313, the vertical side plates 314 are fixed with the upper side plate 312 and the lower side plate 313, the buckle cover 31 comprises a front plate 315 fixed on the lower side plate 313 and the vertical side plates 314, the length of the front plate 315 in the vertical direction is equal to half of the length of the rear plate 311 in the setting direction, the buckle cover 31 forms.
Referring to fig. 1 and 2, a spraying mechanism 32 is provided on the buckle cover 31, and the spraying mechanism 32 sprays water mist into an inner cavity of the buckle cover 31. The spraying mechanism 32 comprises a spraying pipe 321, the spraying pipe 321 is a hose which is tightly connected with the blowing pipe 2 by using a pipe clamp, one end of the spraying pipe 321 is communicated with a pressure pump, the pressure pump is not shown in the drawing, clear water is pressed into the spraying pipe 321 by the pressure pump, the other end of the spraying pipe 321 is connected with a spraying head 322 fixed on the buckle cover 31, the spraying head 322 is fixed in the inner cavity of the buckle cover 31, the spraying head 322 is positioned right above the inner cavity of the buckle cover 31, and high-pressure water in the spraying pipe 321 is sprayed out from the spraying head 322 to form water mist.
Referring to fig. 3 and 4, a fixed filter screen 33 between the blow pipe 2 and the lower side plate 313 is fixed on the buckle cover 31, the fixed filter screen 33 is obliquely arranged, an included angle between the fixed filter screen 33 and a horizontal plane is 15 degrees, a fixing frame is fixed on the outer side of the fixed filter screen 33, the fixing frame is positioned on the surface of the fixed filter screen 33, which is back to the lower side plate 313, and the fixing frame is fixed on the vertical side plate 314, the front plate 315 and the rear plate 311; sliding connection has movable filter screen 4 on buckle closure 31, movable filter screen 4 is parallel with fixed filter screen 33 and is the square hole that the mesh size of filter screen is the same, movable filter screen 4 is the surperficial laminating of downside 313 with fixed filter screen 33 towards the surface contact of downside 313, the activity filter screen 4 outside is provided with movable frame 41, set up the square groove of stepping down that holds movable frame 41 and pass on the perpendicular curb plate 314, the square groove of stepping down runs through two surfaces of erecting curb plate 314 thickness direction, movable frame 41 is for including square frame and the extension plate that is located square frame along its moving direction one side, two perpendicular curb plates 314 are stretched out at the both ends of movable frame 41, reinforcing bar 42 has set firmly on the movable frame 41, reinforcing bar 42 is located movable filter screen 4 surface to fixed filter screen 33 dorsad, reinforcing bar 42 length sets up along movable frame 41 slip direction, reinforcing bar 42 is provided with threely along the thickness direction interval of back plate 311. The vertical side plate 314 is provided with a locking mechanism 5 for limiting the movement of the movable frame 41.
Referring to fig. 3 and 4, the locking mechanism 5 includes a fixed plate 51 fixed on the vertical side plate 314, the fixed plate 51 is located on one side where the elongated plate is disposed, a pressing rod 52 penetrates through the fixed plate 51, a fixing ring 53 is fixedly disposed on the pressing rod 52, a pressing spring 54 located between the fixed plate 51 and the fixing ring 53 is sleeved on the pressing rod 52, the pressing spring 54 is in a compressed state, and the pressing rod 52 is pressed against the movable frame 41. The surface of the movable frame 41 facing the pressing rod 52 is provided with movable grooves 411 for accommodating the pressing rod 52 to insert, the movable grooves 411 are arranged at intervals along the moving direction of the sliding frame, the gap between every two adjacent movable grooves 411 is equal to the length of one mesh of the filter screen plus a fixed value, and five times of the fixed value is equal to the length of the mesh of the filter screen.
The vertical side plates 314 are provided with abdicating holes 3141, the abdicating holes 3141 are square holes, the abdicating holes 3141 and the fixing plates 51 are respectively positioned on the two vertical side plates 314, the vertical side plates 314 provided with the abdicating holes 3141 are hinged with baffle plates 34 covering the abdicating holes 3141, the baffle plates 34 are provided with pressing mechanisms 35, and the baffle plates 34 and the vertical side plates 314 are pressed and connected by the pressing mechanisms 35.
The pressing mechanism 35 includes a fixed magnet 351 fixed to the vertical side plate 314, the fixed magnet 351 is a U-shaped magnet having an opening facing the upper side plate 312, the fixed magnet 351 is fixed to the fixed screen 33, a movable magnet 352 having an opening facing the upper side plate 312 is fixed to the shutter 34, and the movable magnet 352 is a U-shaped magnet having an opening facing the upper side plate 312, and the surfaces of the movable magnet 352 facing the fixed magnet 351 are attracted to each other.
The front plate 315 is located below the blowpipe 2 and seals an area between the fixed screen 33 and the lower side plate 313, an overflow hole 316 is opened on the vertical side plate 314 provided with the fixed plate 51, the overflow hole 316 is a square hole, and the overflow hole 316 is located between the screen and the lower side plate 313. An exhaust box 61 is fixedly arranged on the vertical side plate 314 provided with the fixing plate 51, the exhaust box 61 comprises a square pipe which is fixed with and communicated with the vertical side plate 314, the exhaust box 61 comprises a funnel-shaped collecting pipe which is fixed on the square pipe back to the vertical side plate 314, the exhaust box 61 is communicated with the inner cavity of the buckle cover 31 through an overflow hole 316, an exhaust hole is formed in the upper part of the exhaust box 61, and one end of the exhaust box 61, which is back to the vertical side plate 314, is communicated with an overflow pipe 62.
A grouting process for a tunnel comprises a steel frame fixed at an excavation port of the tunnel; the steel frame is formed by welding 8-shaped reinforcing ribs formed by cold pressing of reinforcing steel bars.
Grouting holes are formed above the tunnel excavation port and are arranged above the excavation port at intervals along the annular direction, and the center line of the ring where the excavation port is located in the middle of the excavation port; in this embodiment, the specification of the tunnel is 2m × 2.3m, the circumferential spacing of the grouting holes is 0.3 m, the elevation angle is 12-15 °, the length of the grouting holes is 2.25 m, and the diameter of the grouting holes is 35 mm.
And inserting one end of the blow pipe 2, which is back to the air compressor, into the grouting hole to clean the grouting hole, and blowing loose soil and gravels in the grouting hole.
The leading small conduit is inserted into the grouting hole, and the side surface of the leading small conduit is provided with a grout outlet.
And injecting modified water glass into the advanced small conduit, and naturally solidifying the modified water glass to reinforce the stratum.
The implementation principle of the above embodiment is as follows:
the blow pipe 2 blows high-pressure gas into the grouting hole, the high-pressure gas drives gravels and loose soil in the grouting hole to fly out of the orifice of the grouting hole and enter the buckle cover 31, the spraying mechanism 32 on the buckle cover 31 is opened, the spraying mechanism sprays water mist into the buckle cover 31, the water mist is contacted with dust in the buckle cover 31 to adsorb the dust, water is accumulated on the lower side plate 313 of the inner cavity of the buckle cover 31, the dust in the buckle cover 31 can be further adsorbed by the water on the lower side plate 313, when the water in the buckle cover 31 gradually increases, the water in the buckle cover 31 flows out of the overflow hole 316, the continuous adsorption of the water on the lower side plate 313 to the dust is ensured, and meanwhile, the air in the buckle cover 31 can flow out of the buckle cover 31 through the overflow hole 316;
when the sand is brought out from the grouting holes by high-pressure gas, the sand enters the buckle cover 31, the sand falls onto the fixed filter screen 33, the meshes on the fixed filter screen 33 block the sand and can accommodate the airflow with dust, when the sand is accumulated more, when the acting force of the sand on the baffle 34 is greater than the attraction action of the fixed magnet 351 on the movable magnet 352, the sand pushes the baffle 34 to rotate around the hinged part of the baffle 34 and the buckle cover 31, so that the sand can flow out of the buckle cover 31 from the abdicating hole 3141, because the distance between the movable magnet 352 and the fixed magnet 351 is increased after the baffle 34 rotates, the mutually attracting acting force is reduced, as the sand on the fixed filter screen 33 is reduced, the acting force of the fixed filter screen 33 on the baffle 34 is reduced, but the baffle 34 can still keep an open state, as the sand is further reduced, the baffle 34 seals the abdicating hole 3141 under the action of self gravity and the attraction action of the fixed magnet 351 on the movable magnet 352, the baffle 34 can be automatically opened or closed, dust blown out by the blowing pipe 2 can be effectively absorbed, and the environmental pollution of the blowing pipe 2 to a construction site due to dust diffusion caused by cleaning of a grouting hole is reduced.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (9)
1. The tunnel grouting equipment comprises a blowing pipe (2), wherein one end of the blowing pipe (2) is communicated with a compressor, and the tunnel grouting equipment is characterized in that: a dust falling mechanism (3) is arranged on the blowpipe (2), the dust falling mechanism (3) comprises a buckle cover (31) fixed on the blowpipe (2), the opening of the buckle cover (31) faces the direction of an air outlet of the blowpipe (2), a spraying mechanism (32) is arranged on the buckle cover (31), and water mist is sprayed out of the inner cavity of the buckle cover (31) by the spraying mechanism (32);
the buckle cover (31) comprises a rear plate (311), an upper side plate (312) and a lower side plate (313) are fixedly arranged at the upper end and the lower end of the same surface of the rear plate (311) respectively, and two vertical side plates (314) fixedly arranged on the rear plate (311) are arranged between the upper side plate (312) and the lower side plate (313);
a fixed filter screen (33) positioned between the blow pipe (2) and the lower side plate (313) is fixed on the buckle cover (31), the fixed filter screen (33) is obliquely arranged, the vertical side plate (314) is provided with an abdicating hole (3141), a baffle (34) for covering the abdicating hole (3141) is hinged on the vertical side plate (314), a pressing mechanism (35) is arranged on the baffle (34), and the baffle (34) and the vertical side plate (314) are pressed and connected by the pressing mechanism (35);
the buckle cover (31) comprises a front plate (315) fixed on a lower side plate (313) and a vertical side plate (314), the front plate (315) is positioned below the blowpipe (2) and seals an area between the fixed filter screen (33) and the lower side plate (313), an overflow hole (316) is formed in the buckle cover (31), and the overflow hole (316) is positioned between the filter screen and the lower side plate (313).
2. The tunnel grouting apparatus of claim 1, characterized in that: the spraying mechanism (32) comprises a spraying pipe (321), one end of the spraying pipe (321) is communicated with a pressure pump, the other end of the spraying pipe (321) is connected with a spraying head (322) fixed on the buckle cover (31), and the spraying head (322) is fixed in an inner cavity of the buckle cover (31).
3. The tunnel grouting apparatus of claim 1, characterized in that: the pressing mechanism (35) comprises a fixed magnet (351) fixed on the vertical side plate (314), and a movable magnet (352) which is mutually attracted with the fixed magnet (351) is fixed on the baffle plate (34).
4. The tunnel grouting apparatus of claim 1, characterized in that: sliding connection has activity filter screen (4) on buckle closure (31), the surface of activity filter screen (4) downside board (313) is laminated with the surface contact of fixed filter screen (33) orientation downside board (313), activity filter screen (4) outside is provided with movable frame (41), and two perpendicular curb plates (314) are stretched out at the both ends of movable frame (41), be provided with locking mechanism (5) that restriction movable frame (41) removed on perpendicular curb plate (314).
5. The tunnel grouting apparatus of claim 4, characterized in that: the movable frame (41) is fixedly provided with a reinforcing rod (42), and the reinforcing rod (42) is positioned on the surface of the movable filter screen (4) back to the fixed filter screen (33).
6. The tunnel grouting apparatus of claim 4, characterized in that: locking mechanism (5) including being fixed in fixed plate (51) on erecting curb plate (314), wear to be equipped with on fixed plate (51) and compress tightly pole (52), it has solid fixed ring (53) to set firmly on compressing tightly pole (52), compress tightly pole (52) and go up the cover and be equipped with pressure spring (54) that are located between fixed plate (51) and solid fixed ring (53), compress tightly pole (52) and movable frame (41) and compress tightly.
7. The tunnel grouting apparatus of claim 6, characterized in that: the utility model discloses a filter screen, including activity frame (41) and activity groove (411), activity frame (41) are seted up towards compressing tightly pole (52) on the surface and are held and compress tightly pole (52) male activity groove (411), activity groove (411) interval sets up, and adjacent two clearance between activity groove (411) equals filter screen mesh length plus a definite value, and the integral multiple of this definite value equals filter screen mesh length.
8. The tunnel grouting apparatus of claim 1, characterized in that: an exhaust box (61) is fixedly arranged on the buckle cover (31), the exhaust box (61) is communicated with the inner cavity of the buckle cover (31) through an overflow hole (316), an exhaust hole is formed above the exhaust box (61), and an overflow pipe (62) is communicated with the exhaust box (61).
9. A tunnel grouting process is characterized in that:
comprises a steel frame fixed at a tunnel excavation port;
grouting holes are formed above the tunnel excavation port and are arranged above the excavation port at intervals along the annular direction, and the center line of the ring where the excavation port is located in the middle of the excavation port;
one end of the blow pipe (2) back to the gas compressor is inserted into the grouting hole to clean the grouting hole, and soft soil and gravels in the grouting hole are blown off;
inserting the advanced small conduit into the grouting hole, wherein a grout outlet is formed in the side surface of the advanced small conduit;
and injecting modified water glass into the advanced small conduit, and naturally solidifying the modified water glass to reinforce the stratum.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911207623.5A CN110924984B (en) | 2019-11-29 | 2019-11-29 | Tunnel grouting equipment and process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911207623.5A CN110924984B (en) | 2019-11-29 | 2019-11-29 | Tunnel grouting equipment and process |
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| CN110924984A true CN110924984A (en) | 2020-03-27 |
| CN110924984B CN110924984B (en) | 2021-01-29 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1193594A (en) * | 1997-09-19 | 1999-04-06 | Nittoc Constr Co Ltd | Cement spraying method |
| CN101196118A (en) * | 2008-01-07 | 2008-06-11 | 北京市政建设集团有限责任公司 | Advanced double rows slip casting ductule construction technique |
| CN102562069A (en) * | 2012-03-01 | 2012-07-11 | 肥城曹庄煤矿有限公司 | Fluid filling and replacement mining technology for coal bed on highly confined water body |
| CN205558929U (en) * | 2016-04-26 | 2016-09-07 | 中交隧道局第四工程有限公司 | Sand cobble stratum tunnel blows device of leading pipe of hole construction |
-
2019
- 2019-11-29 CN CN201911207623.5A patent/CN110924984B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1193594A (en) * | 1997-09-19 | 1999-04-06 | Nittoc Constr Co Ltd | Cement spraying method |
| CN101196118A (en) * | 2008-01-07 | 2008-06-11 | 北京市政建设集团有限责任公司 | Advanced double rows slip casting ductule construction technique |
| CN102562069A (en) * | 2012-03-01 | 2012-07-11 | 肥城曹庄煤矿有限公司 | Fluid filling and replacement mining technology for coal bed on highly confined water body |
| CN205558929U (en) * | 2016-04-26 | 2016-09-07 | 中交隧道局第四工程有限公司 | Sand cobble stratum tunnel blows device of leading pipe of hole construction |
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| CN110924984B (en) | 2021-01-29 |
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