CN110671120A - Open-type outer shield tunneling device and collapse roadway tunneling method - Google Patents
Open-type outer shield tunneling device and collapse roadway tunneling method Download PDFInfo
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- CN110671120A CN110671120A CN201911035748.4A CN201911035748A CN110671120A CN 110671120 A CN110671120 A CN 110671120A CN 201911035748 A CN201911035748 A CN 201911035748A CN 110671120 A CN110671120 A CN 110671120A
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- 230000005641 tunneling Effects 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000002893 slag Substances 0.000 claims abstract description 82
- 239000011435 rock Substances 0.000 claims description 35
- 238000007599 discharging Methods 0.000 claims description 33
- 238000010276 construction Methods 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 5
- 239000004575 stone Substances 0.000 description 13
- 238000009412 basement excavation Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000036346 tooth eruption Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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- 238000010408 sweeping Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/093—Control of the driving shield, e.g. of the hydraulic advancing cylinders
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
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- 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
- E21F11/00—Rescue devices or other safety devices, e.g. safety chambers or escape ways
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Abstract
The invention belongs to the technical field of mine collapse roadway rescue, and discloses an open type outer shield tunneling device which comprises a front shell, a rear shell, a cutting system and a slag conveying system, wherein the front shell and the rear shell are of a cylindrical structure, the tail end of the front shell is butted with the front end of the rear shell to form a cylindrical tunneling main body shell, the cutting system and the slag conveying system are arranged in the tunneling main body shell, the cutting system comprises a cutting head, at least part of working section of the cutting head extends out of the front end of the front shell, and the main conveying direction of the slag conveying system reversely extends from the front end of the tunneling main body shell to the rear end of the tunneling main body shell; and the tunneling main body shell is jacked into the collapsed roadway by the stress of the tail end. The problems that in the prior art, the tunneling speed of a collapsed roadway is low, the breaking efficiency of boulders with large particle sizes is low, people cannot enter a cutting cavity and the like can be solved. The invention also provides a collapse roadway tunneling method.
Description
Technical Field
The invention belongs to the technical field of mine collapse roadway rescue, and particularly relates to collapse roadway tunneling equipment and a collapse roadway tunneling method.
Background
At present, the mine collapse roadway rescue method in China mainly comprises two methods: the two tunneling methods have limitations, the tunneling speed is low, and the safety of constructors cannot be guaranteed.
The patent CN202266293 develops a tunnel collapse life saving machine for rescuing trapped people, the method adopts a multilayer sleeve mode, the process is more complicated because the method relates to the jacking of multiple sleeves, the unearthing is not synchronous with the jacking pipe, the slag can be discharged when the jacking pipe is pushed in for 2m, the slag discharge is carried out on the soil body manually, and the speed is lower. Patent "CN 207212342U" has introduced a novel push bench of being applied to cobble structure, drives spiral unearthing machine and shell rotation through driving motor, and whole equipment is fixed, meets front end emergency, and personnel can not enter into the inside of aircraft nose and accomplish emergency's processing. The CN105156117A introduces a tunnel rescue push bench, the patent adopts an open push bench technology, has no special rock breaking and cutting cutterhead, and can not be used for construction in a collapse rock roadway. "CN 201410661849.3" has introduced a tunnel and has closed the door collapse quick rescue method, and this patent adopts the screw transport sediment method, excavates the soil body that collapses through the blade disc, however, the blade disc does not have the ability of breaking rock, only is applicable to the soft soil rescue, simultaneously, the pipe diameter is less, and inside has screw conveyor, and when the front end met emergency, the rescue personnel can not in time get into the blade disc department and intervene, and it is weaker to handle the emergency.
Disclosure of Invention
In order to solve the problems, the open type outer shield tunneling device provided by the invention can solve the problems that the tunneling speed of a collapse tunnel is low, the crushing efficiency of large-particle-size boulder is low, a cutting cavity cannot enter people and the like in the prior art. The invention also provides a collapse roadway tunneling method.
In order to achieve the purpose, the invention adopts the technical scheme that:
in a first technical scheme, the open type outer shield tunneling device comprises a front shell, a rear shell, a cutting system and a slag conveying system, wherein the front shell and the rear shell are of a cylindrical structure, the tail end of the front shell is butted with the front end of the rear shell to form a cylindrical tunneling main body shell, the cutting system and the slag conveying system are arranged in the tunneling main body shell, the cutting system comprises a cutting head, at least part of working section of the cutting head extends out of the front end of the front shell, and the main conveying direction of the slag conveying system reversely extends from the front end of the tunneling main body shell to the rear end of the tunneling main body shell; and the tunneling main body shell is jacked into the collapsed roadway by the stress of the tail end.
In the first technical scheme, preferably, the inner wall of the front end of the rear shell is provided with a plurality of deviation-correcting oil cylinders which are arranged at equal intervals, one of the cylinder body or the extending end of each deviation-correcting oil cylinder is fixed on the rear shell, the other of the cylinder body or the extending end of each deviation-correcting oil cylinder is fixed on the front shell, the deviation-correcting oil cylinders extend out in unequal lengths, and the axes of the front shell and the rear shell are staggered to guide the tunneling direction of the tunneling device.
In the first technical scheme, preferably, the tail of the cutting system is provided with an angle adjusting system for adjusting the orientation angle of the cutting head, the angle adjusting system comprises a fixing plate, a rotating plate, a horizontal angle oil cylinder and a vertical angle oil cylinder, wherein the fixing plate is fixedly arranged on the inner wall of the rear shell, the fixing plate is hinged with the rotating plate so that the fixing plate and the rotating plate can rotate relatively, the rotating plate is hinged with the tail of the cutting system, and the extending end of the horizontal angle oil cylinder is hinged with the rotating plate so as to drive the rotating plate and the cutting system to deflect in the horizontal direction; and the extending end of the vertical angle oil cylinder is hinged with the tail part of the cutting system so as to drive the cutting system to deflect in the vertical direction.
In the first aspect, it is preferable that the excavation main body casing has an operation position inside, and the operation position is adjacent to the angle adjustment system, so that an operator can observe the face condition of the excavation device conveniently.
In the first technical means, preferably, the wall thickness of the front housing from the front end to the tail end is gradually increased, so that the longitudinal section of the front housing wall is formed into a shovel shape.
In the first technical scheme, preferably, the slag conveying system comprises a scraper machine, a track and a slag discharging car arranged on the track, wherein the scraper machine extends from the front end of the tunneling main body shell to the upper part of the middle part in the tunneling main body shell, the front end of the track is laid below the tail section of the scraper machine, and collapsed matters entering the tunneling main body shell are conveyed to the slag discharging car through the scraper machine and are conveyed out from the tail part of the tunneling device through the slag discharging car.
In the first aspect, preferably, the excavation main body casing incorporates a portable demolition device including at least a water jet cutter and a torch cutter.
In the first technical solution, preferably, the tail of the excavation main body casing is provided with a top pipe, the top pipe is in butt joint with the tail of the rear casing, and the top pipe is used as an excavation power source of the excavation device.
In a second technical solution, a method of tunneling a cave-in roadway using the open-type outer shield tunneling apparatus as set forth in the first technical solution is as follows:
the method comprises the steps of placing an open type outer shield tunneling device in a collapsed roadway, ejecting the open type outer shield tunneling device into the collapsed roadway by applying force from the tail part, relatively pushing the collapsed object into a tunneling main body shell in the process that the open type outer shield tunneling device is ejected into the collapsed roadway, and discharging the collapsed object from the tail part of the open type outer shield tunneling device through a slag conveying system.
In the second technical means, it is preferable that,
case 1: when the large-particle-size rock is subjected to overall collapse, the jacking speed of the open type outer shield tunneling device is reduced, the large-particle-size rock is crushed through the cutting system to form small-particle-size rock, and collapsed substances are discharged from the tail of the open type outer shield tunneling device through the small-particle-size rock through the slag conveying system;
case 2: when a roadway metal construction object is encountered, the tunneling of the open type outer shield tunneling device is stopped, the cutting system is stopped to work, the cutting system is transplanted to the upper part inside the tunneling main body shell and fixed, the metal construction object is manually cut, the cut small-size metal construction object is conveyed to the inlet end of the slag conveying system, and the cut small-size metal construction object is discharged from the tail part of the open type outer shield tunneling device through the slag conveying system.
The beneficial effects of the invention are as follows:
the device is suitable for rapid rescue of a collapsed roadway, adopts an open type jacking process, efficiently discharges slag, can rapidly discharge small-particle-size slag stones, crushes large particles through the cutting head, enables personnel to be close to an operation surface, can timely treat emergency in the rescue process, and solves the problems that the existing collapsed roadway tunneling equipment is low in tunneling speed and cannot treat the emergency and the like.
Drawings
Fig. 1 is a schematic top view of the open type outer shield tunneling device according to the present invention.
Fig. 2 is a schematic front view of the open type outer shield tunneling device of the present invention.
Fig. 3 is a schematic axial side structure diagram of the open type outer shield tunneling device.
Fig. 4 is a schematic structural diagram of a slag conveying system in the open type outer shield tunneling device.
Fig. 5 is a schematic structural diagram of a cutting system in the open type outer shield tunneling device.
The reference numerals include:
1-a cutting head, 2-a front shell, 3-a rear shell, 4-a cutting arm protective shell, 5-a fixed plate, 6-a rotating disc, 7-a scraper conveyor, 8-a slag discharge vehicle, 9-a pipe jacking, 10-a track, 11-a scraper motor, 12-a horizontal angle oil cylinder, 13-a deviation rectifying oil cylinder, 14-a vertical angle oil cylinder, 15-a winch, 16-an operator, 17-a reducer, 18-a cutting motor, 19-a rear cover plate, 20-a slag discharge cavity and 21-an upper hinge pivot point; 22-lower hinge point, 23-breaking-in equipment.
Detailed Description
In order to make the purpose, technical solution and advantages of the present technical solution more clear, the present technical solution is further described in detail below with reference to specific embodiments. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present teachings.
Example 1
As shown in fig. 1 to 5, the open type outer shield tunneling device provided in this embodiment includes a front casing 2, a rear casing 3, a cutting system and a slag conveying system, where the front casing 2 and the rear casing 3 are both of a cylindrical structure, the rear end of the front casing 2 is butted against the front end of the rear casing 3 to form a cylindrical tunneling main body casing, the cutting system and the slag conveying system are disposed inside the tunneling main body casing, the cutting system includes a cutting head 1, at least part of a working section of the cutting head 1 extends out of the front end of the front casing 2, and a main conveying direction of the slag conveying system extends from the front end of the tunneling main body casing to the rear end of the tunneling main body casing in a reverse direction; the tunneling main body shell is jacked into the collapsed roadway under the stress of the tail end.
In this embodiment, the inner wall of the front end of the rear casing 3 is provided with a plurality of deviation-correcting cylinders 13 arranged at equal intervals, one of the cylinder body or the extending end of the deviation-correcting cylinder 13 is fixed on the rear casing 3, the other of the cylinder body or the extending end is fixed on the front casing 2, and the deviation-correcting cylinders 13 extend out in unequal lengths, so that the axes of the front casing 2 and the rear casing 3 are staggered to guide the tunneling direction of the tunneling device.
In the embodiment, the tail part of the cutting system is provided with an angle adjusting system for adjusting the orientation angle of the cutting head 1, the angle adjusting system comprises a fixing plate 5, a rotating plate 6, a horizontal angle oil cylinder 12 and a vertical angle oil cylinder 14, wherein the fixing plate 5 is fixedly arranged on the inner wall of the rear shell 3, the fixing plate 5 is hinged with the rotating plate 6 to enable the fixing plate 5 and the rotating plate 6 to rotate relatively, the rotating plate 6 is hinged with the tail part of the cutting system, and the extending end of the horizontal angle oil cylinder 12 is hinged with the rotating plate 6 to drive the rotating plate 6 and the cutting system to deflect in the; the extending end of the vertical angle oil cylinder 14 is hinged with the tail part of the cutting system so as to drive the cutting system to deflect in the vertical direction.
Preferably, the ripper body casing has an operating position therein that facilitates the angular adjustment system to facilitate the operator 16 in viewing the face condition of the ripper device. The wall thickness of the front case 2 increases gradually from the front end to the rear end, so that the longitudinal section of the wall of the front case 2 is formed into a shovel shape. The slag conveying system comprises a scraper machine 7, a rail 10 and a slag discharging car 8 arranged on the rail 10, wherein the scraper machine 7 extends from the front end of the tunneling main body shell to the upper part of the middle part in the tunneling main body shell, the front end of the rail 10 is laid below the tail section of the scraper machine 7, and collapsed matters entering the tunneling main body shell are conveyed to the slag discharging car 8 through the scraper machine 7 and are conveyed out from the tail part of the tunneling device through the slag discharging car 8.
A portable demolition equipment 23 is built into the ripper body casing, and the demolition equipment 23 includes at least a water jet cutter and a flame cutter. The tail part of the tunneling main body shell is provided with a top pipe 9, the top pipe 9 is in butt joint with the tail part of the rear shell 3, and the top pipe 9 is used as a tunneling power source of the tunneling device.
Particularly, the requirement on rock breaking is not high in consideration of the high-speed tunneling requirement in the collapsed rock interface, and the requirements on high-speed jacking and high-speed slag discharging are high. Therefore, by adopting the large-opening-ratio cutter head structure, the slag stones which do not need to be crushed can quickly enter the slag discharging cavity 20, and can be quickly discharged by the scraper 7.
The open type pipe jacking 9 rescue equipment adopts a large-opening design, the cutting head 1 only occupies a small part of the cross section, the front shell 2 adopts a slope guiding device, most of collapsed slag stones can directly enter the slag discharging cavity 20, the bottom end of the slag discharging cavity 20 is provided with a scraper 7 with large slag discharging capacity, the scraper motor 11 is arranged at the rear end, the scraper 7 is driven to operate by the scraper motor 11, the scraper 7 discharges the slag stones in the slag discharging cavity 20, the slag discharging vehicle 8 is arranged at the rear end of the scraper 7, after the scraper 7 discharges the slag stones into the slag discharging vehicle 8, the winch 15 is arranged inside the head, and the transportation of the slag discharging vehicle 8 is completed by the traction of the winch 15.
Because the size of the tunnel rock that collapses is not of uniform size, most use the tiny particle rock as the main, if when meetting the large particle rock, need adopt cutterhead 1 to carry out the breakage to it. The cutting head 1 adopts a cutting tooth rock breaking principle similar to a roadheader, large rock blocks are ground by rotation of the cutting head 1 and hammering of a cutting arm, the cutting teeth are arranged in a streamline manner, and a part of slag can be brought into a slag discharging cavity 20 at the rear end by rotation of the streamline cutting tooth, so that a slag discharging system can take away the slag.
Because combustible gas such as gas easily appears in the tunnel that collapses in the colliery, simultaneously, cutterhead 1 operating mode is comparatively abominable, and the easy detritus that falls in the top of cutting motor 18 causes destruction, consequently, at cutting motor 18, cutting arm protecting crust 4 is installed to reduction gear 17 outer end, the faying face of cutting arm protecting crust 4 and back shroud 19 adopts explosion-proof design, cutting arm protecting crust 4 not only can play blast proof effect, can also protect the internal plant, prevent that motor, reduction gear 17 from being smashed by the detritus.
Because coal mine or other mine tunnel spaces are comparatively limited, need realize the removal of cutting arm in small-size equipment space, this patent adopts the compactification design scheme, leaves two hinge fulcrums through the back lid of cutting arm, upper portion hinge fulcrum 21 and rotary disk 6 are fixed, lower part hinge fulcrum 22 and vertical angle hydro-cylinder 14 are fixed, when vertical angle hydro-cylinder 14 stretches out or retracts, the cutting arm can appear changing at the angle of vertical direction, and then, cutterhead 1 can realize the removal in vertical direction. Similarly, one end of the rotating disc 6 is connected with the fixing plate 5, the other end of the rotating disc is connected with the horizontal angle oil cylinder 12, when the horizontal angle oil cylinder 12 extends out or retracts, the rotating disc 6 drives the cutting arm to rotate together, and then the cutting head 1 is moved in the horizontal direction. The vertical angle oil cylinder 14 and the horizontal angle oil cylinder 12 can simultaneously move in a telescopic mode, so that the cutting head 1 can move on the full section, and complete cutting and crushing of the complete section are completed.
The open top pipe 9 rescue equipment is different from other top pipe 9 rescue equipment in that the working position of the operator 16 is only 2 meters away from the open tunnel face, so that the operator 16 can accurately control the excavation operation, quickly respond to the stratum change and take necessary measures. When encountering steel bars, anchor rods, anchor cables or other obstacles, the steel bars, the anchor rods, the anchor cables or other obstacles can be removed on site. Because the geological condition can be directly seen, the direction control is easier. When personnel are buried or otherwise present, the operator 16 can view the front-end situation in a timely manner for timely disposal.
The traditional deviation correcting device of the pipe jacking 9 machine is a guide cutting cutter disc, and the orientation function is realized by changing the cutting angle of the cutting cutter disc. The open-type pipe jacking 9 deviation rectifying device is characterized in that the front shell 2 is guided, the front shell 2 is provided with a conical guide surface, the front shell 2 and the rear shell 3 adopt a deviation rectifying mode of a deviation rectifying oil cylinder 13, and the guiding effect of the shells can be realized by arranging 4 deviation rectifying oil cylinders 13 around the shells and extending 4 deviation rectifying oil cylinders 13 to different lengths.
Example 2
The method for tunneling a cave-in roadway, which uses the open-type outer shield tunneling device provided in example 1, comprises the following steps:
the method comprises the steps of placing an open type outer shield tunneling device in a collapsed roadway, ejecting the open type outer shield tunneling device into the collapsed roadway by applying force from the tail part, relatively pushing the collapsed object into a tunneling main body shell in the process that the open type outer shield tunneling device is ejected into the collapsed roadway, and discharging the collapsed object from the tail part of the open type outer shield tunneling device through a slag conveying system.
Case 1: when the large-particle-size rock is subjected to overall collapse, the jacking speed of the open type outer shield tunneling device is reduced, the large-particle-size rock is crushed through the cutting system to form small-particle-size rock, and collapsed substances are discharged from the tail of the open type outer shield tunneling device through the small-particle-size rock through the slag conveying system;
case 2: when a roadway metal construction object is encountered, the tunneling of the open type outer shield tunneling device is stopped, the cutting system is stopped to work, the cutting system is transplanted to the upper part inside the tunneling main body shell and fixed, the metal construction object is manually cut, the cut small-size metal construction object is conveyed to the inlet end of the slag conveying system, and the cut small-size metal construction object is discharged from the tail part of the open type outer shield tunneling device through the slag conveying system.
Concrete, meet the condition that the tunnel of collapsing is mostly small-grain-size rock, inside small-grain-size rubble can follow the opening part direct access row sediment chamber 20 of aircraft nose, in order to prevent most slag stone from getting into fast and cause the tunnel unstability that collapses the circumstances such as, need reduce the propulsion speed that push pipe 9 was equipped, along with getting into gradually of slag stone, scrape trigger 7 and can discharge the slag stone that gets into gradually, kept the whole dynamic stability of face.
The open type pipe jacking 9 rescue equipment adopts a large-opening design, the cutting head 1 only occupies a small part of the cross section, the front shell 2 adopts a slope guiding device, small-particle-size collapsed slag stones can directly enter the slag discharging cavity 20, the bottom end of the slag discharging cavity 20 is provided with a scraper 7 with large slag discharging capacity, the scraper motor 11 is arranged at the rear end, the scraper motor 11 drives the scraper 7 to operate, the scraper 77 discharges the slag stones in the slag discharging cavity 20, the slag discharging vehicle 8 is arranged at the rear end of the scraper 7, after the scraper 7 discharges the slag stones into the slag discharging vehicle 8, the winch 15 is arranged inside the head, and the transportation of the slag discharging vehicle 8 is completed through the winch 15.
In order to ensure the stability of the tunnel face and the directionality of the tunneling equipment, the cutting head 1 needs to perform scanning operation on the tunnel face according to a Z shape, gradually cleans the tunnel face from the upper layer to the lower layer, and especially needs to pay attention to cleaning of slag on the edge of the pipe wall, so that the jacking of the jacking pipe 9 can be prevented from being blocked. Two hinge supporting points are reserved on a rear cover plate 19 of the cutting arm, an upper hinge supporting point 21 and the rotating disc 6 are fixed, a lower hinge supporting point 22 and the vertical angle oil cylinder 14 are fixed, when the vertical angle oil cylinder 14 extends out or retracts, the angle of the cutting arm in the vertical direction can be changed, and then the cutting head 1 can move in the vertical direction. Similarly, one end of the rotating disc 6 is connected with the fixing plate 5, the other end of the rotating disc is connected with the horizontal angle oil cylinder 12, when the horizontal angle oil cylinder 12 extends out or retracts, the rotating disc 6 drives the cutting arm to rotate together, and then the cutting head 1 is moved in the horizontal direction. The vertical angle oil cylinder 14 and the horizontal angle oil cylinder 12 can simultaneously move in a telescopic mode, so that the cutting head 11 can move on the full section, the face sweeping operation is carried out on the face of the tunnel according to the Z shape, the small-particle-size slag stones with complete sections are gradually cleaned from the upper layer to the lower layer, and the crushing and stirring of the small-particle-size slag stones with complete sections are completed. The cutting teeth are arranged in a streamline manner, and a part of slag can be brought into the slag discharging cavity 20 at the rear end through the rotation of the streamline cutting teeth, so that a slag discharging system can take away the slag conveniently.
When the large-particle-size rock is subjected to overall collapse, the particle size of the rock is 300-1000 mm. If meet large granule rock when, need adopt cutterhead 1 to carry out the breakage to it, cutterhead 1 adopts the broken rock principle of pick of similar roadheader, realizes the grinding to the bold rock through the hammering of cutterhead 1 rotation and cutting arm, and the pick is according to streamlined arrangement, through the rotation of streamlined pick, can bring some slabstone into the sediment chamber 20 of back end in, the slabstone is taken away to the deslagging system of being convenient for. When the cutterhead 1 is used for crushing large-particle-diameter rocks, the jacking speed of the jacking pipe 9 needs to be reduced, the depth of the cutterhead 1 which enters the rocks is too large, the problems of blocking and blocking of the cutterhead 1 are caused, the cutting teeth gradually crush the rocks, the control equipment of an operator gradually jacks the rocks, the large-particle-diameter slag rocks are gradually crushed into several small-particle-diameter slag rocks, and the small-particle-diameter slag rocks can be smoothly discharged according to the mode.
Meet the conditions of anchor rods, anchor cables, steel beams and the like. The working position of the operator of the open top pipe 9 rescue equipment is only 2 meters away from the open tunnel face, so that the excavation operation can be accurately controlled, the quick response to the stratum change can be made, and necessary measures can be taken. When encountering a steel bar, an anchor rod, an anchor cable or other obstacles, an operator firstly stops the equipment tunneling and the cutting head 1 rotates, operates the vertical angle oil cylinder 14 and the horizontal angle oil cylinder 12 of the cutting arm and moves the cutting head 11 to the upper left corner or the upper right corner. The operator takes out the breaking-in equipment 23 arranged at the top pipe 9, the breaking-in equipment mainly comprises a water jet cutter and a flame cutter, the equipment is conveyed to the face, the operator operates the portable breaking-in equipment 23 to break-in the anchor rods, the anchor cables and the steel beams, the large-size obstacles are divided into a plurality of small-size obstacles, the large-size obstacles are manually conveyed to the scraper 7 and are conveyed into the slag discharging vehicle 8 at the rear end through the scraper 7, and then the integral obstacle removing action is completed. The person carries the forcible entry equipment 23 to return, and the jacking and cutting are resumed.
The foregoing is only a preferred embodiment of the present invention, and many variations in the specific embodiments and applications of the invention may be made by those skilled in the art without departing from the spirit of the invention, which falls within the scope of the claims of this patent.
Claims (10)
1. The utility model provides an outer shield entry driving device of open-type which characterized in that: the cutting system comprises a cutting head, at least part of working section of the cutting head extends out of the front end of the front shell, and the main transportation direction of the slag conveying system reversely extends from the front end of the tunneling main body shell to the rear end of the tunneling main body shell; and the tunneling main body shell is jacked into the collapsed roadway by the stress of the tail end.
2. The open-type outer shield tunneling device according to claim 1, characterized in that: the inner wall of the front end of the rear shell is provided with a plurality of deviation-correcting oil cylinders which are arranged at equal intervals, one of a cylinder body or an extending end of each deviation-correcting oil cylinder is fixed on the rear shell, the other of the cylinder body or the extending end is fixed on the front shell, and the deviation-correcting oil cylinders extend out in unequal lengths, so that the axes of the front shell and the rear shell are staggered to guide the tunneling direction of the tunneling device.
3. The open-type outer shield tunneling device according to claim 1, characterized in that: the tail part of the cutting system is provided with an angle adjusting system for adjusting the orientation angle of the cutting head, the angle adjusting system comprises a fixing plate, a rotating plate, a horizontal angle oil cylinder and a vertical angle oil cylinder, the fixing plate is fixedly arranged on the inner wall of the rear shell, the fixing plate is hinged with the rotating plate to enable the fixing plate and the rotating plate to rotate relatively, the rotating plate is hinged with the tail part of the cutting system, and the extending end of the horizontal angle oil cylinder is hinged with the rotating plate to drive the rotating plate and the cutting system to deflect in the horizontal direction; and the extending end of the vertical angle oil cylinder is hinged with the tail part of the cutting system so as to drive the cutting system to deflect in the vertical direction.
4. The open-type outer shield tunneling device according to claim 3, characterized in that: the tunneling main body shell is internally provided with an operation position which is adjacent to an angle adjusting system, so that an operator can observe the tunnel face condition of the tunneling device conveniently.
5. The open-type outer shield tunneling device according to claim 1, characterized in that: the wall thickness of the front end to the tail end of the front shell is gradually increased, so that the longitudinal section of the wall of the front shell forms a shovel shape.
6. The open-type outer shield tunneling device according to claim 1, characterized in that: the slag conveying system comprises a scraper machine, a track and a slag discharging vehicle arranged on the track, wherein the scraper machine extends from the front end of a tunneling main body shell to the upper part of the middle part in the tunneling main body shell, the front end of the track is laid below the tail section of the scraper machine, and collapsed substances entering the tunneling main body shell are conveyed to the slag discharging vehicle through the scraper machine and are conveyed out from the tail part of the tunneling device through the slag discharging vehicle.
7. The open-type outer shield tunneling device according to claim 1, characterized in that: the portable breaking and dismantling equipment is arranged in the tunneling main body shell and at least comprises a water jet cutting machine and a flame cutting machine.
8. The open-type outer shield tunneling device according to claim 1, characterized in that: and the tail part of the tunneling main body shell is provided with a jacking pipe, the jacking pipe is in butt joint with the tail part of the rear shell, and the jacking pipe is used as a tunneling power source of the tunneling device.
9. The collapse roadway tunneling method is characterized by comprising the following steps: the open type outer shield tunneling device according to any one of claims 1 to 8 is used, and the tunneling method comprises the following steps:
the method comprises the steps of placing an open type outer shield tunneling device in a collapsed roadway, ejecting the open type outer shield tunneling device into the collapsed roadway by applying force from the tail part, relatively pushing the collapsed object into a tunneling main body shell in the process that the open type outer shield tunneling device is ejected into the collapsed roadway, and discharging the collapsed object from the tail part of the open type outer shield tunneling device through a slag conveying system.
10. The method of claim 9, wherein:
case 1: when the large-particle-size rock is subjected to overall collapse, the jacking speed of the open type outer shield tunneling device is reduced, the large-particle-size rock is crushed through the cutting system to form small-particle-size rock, and collapsed substances are discharged from the tail of the open type outer shield tunneling device through the small-particle-size rock through the slag conveying system;
case 2: when a roadway metal construction object is encountered, the tunneling of the open type outer shield tunneling device is stopped, the cutting system is stopped to work, the cutting system is transplanted to the upper part inside the tunneling main body shell and fixed, the metal construction object is manually cut, the cut small-size metal construction object is conveyed to the inlet end of the slag conveying system, and the cut small-size metal construction object is discharged from the tail part of the open type outer shield tunneling device through the slag conveying system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911035748.4A CN110671120B (en) | 2019-10-28 | 2019-10-28 | Open type outer shield tunneling device and collapse roadway tunneling method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911035748.4A CN110671120B (en) | 2019-10-28 | 2019-10-28 | Open type outer shield tunneling device and collapse roadway tunneling method |
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| CN110671120B CN110671120B (en) | 2024-03-29 |
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|---|---|---|---|---|
| US4122683A (en) * | 1976-04-08 | 1978-10-31 | Gewerkschaft Eisenhutte Westfalia | Tunnel drive shield |
| CN102587929A (en) * | 2012-03-23 | 2012-07-18 | 中铁隧道装备制造有限公司 | Earth pressure balance shield machine without cutter disk |
| CN202768008U (en) * | 2012-08-31 | 2013-03-06 | 中国矿业大学 | Three-degree-of-freedom self-walking mini-type shield mechanism |
| CN210977488U (en) * | 2019-10-28 | 2020-07-10 | 煤科集团沈阳研究院有限公司 | Open-type outer shield tunneling device |
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2019
- 2019-10-28 CN CN201911035748.4A patent/CN110671120B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4122683A (en) * | 1976-04-08 | 1978-10-31 | Gewerkschaft Eisenhutte Westfalia | Tunnel drive shield |
| CN102587929A (en) * | 2012-03-23 | 2012-07-18 | 中铁隧道装备制造有限公司 | Earth pressure balance shield machine without cutter disk |
| CN202768008U (en) * | 2012-08-31 | 2013-03-06 | 中国矿业大学 | Three-degree-of-freedom self-walking mini-type shield mechanism |
| CN210977488U (en) * | 2019-10-28 | 2020-07-10 | 煤科集团沈阳研究院有限公司 | Open-type outer shield tunneling device |
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| CN110671120B (en) | 2024-03-29 |
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