CN114320327A - Multi-geological tunnel tunneling equipment and construction method thereof - Google Patents
Multi-geological tunnel tunneling equipment and construction method thereof Download PDFInfo
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- CN114320327A CN114320327A CN202210055500.XA CN202210055500A CN114320327A CN 114320327 A CN114320327 A CN 114320327A CN 202210055500 A CN202210055500 A CN 202210055500A CN 114320327 A CN114320327 A CN 114320327A
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Abstract
The invention discloses multi-geological tunneling equipment and a construction method thereof, wherein the multi-geological tunneling equipment comprises a shield body, a cutter head capable of excavating tunnel rock soil is arranged at the front part of the shield body, a main drive for driving the cutter head is arranged in the shield body, a reserved interface of a main belt conveyor and a reserved interface of a spiral conveyor are also arranged in the shield body, the reserved interface of the main belt conveyor can be provided with the main belt conveyor, the reserved interface of the spiral conveyor can be provided with the spiral conveyor, and a shield tail can be assembled at the rear part of the shield body. The multi-geological tunnel tunneling equipment adopts a working mode of a three-mode shield tunneling machine, and is suitable for rapid tunneling of multiple stratums.
Description
Technical Field
The invention relates to the technical field of shield tunneling machines, in particular to multi-geological tunnel tunneling equipment. And also relates to a construction method of the multi-geological tunnel tunneling equipment.
Background
In recent years, the development of domestic shield machines achieves a qualitative progress, and the technologies of the earth pressure balance shield machine, the muddy water balance shield machine and the TBM achieve a very high level and can adapt to most geological conditions. With the increasing of the tunneling requirement, the frequency of formation diversity is more and more frequent, most single-mode shield machines are difficult to tunnel complex formations, the development of the shield machines starts to turn to a multi-mode common shield body on the basis of the condition, and the existing multi-mode shield machines mainly comprise an earth pressure-muddy water balance shield machine, an earth pressure-TBM shield machine and a muddy water-TBM shield machine. The multi-mode shield machine overcomes the technical defect that the prior single-mode shield machine can only adapt to a single stratum, has excellent adaptability to a complex stratum, and can meet the conditions of most of current tunnel construction.
The current multi-mode shield machine earth pressure-TBM mainly switches between an earth pressure mode and a double-shield TBM shield machine working mode, the main switching mode is to realize mode switching through the alternate work of a screw conveyor and a main belt conveyor, and the switching between the earth pressure mode and the TBM mode can also be realized directly by adjusting the position of the end of a screw shaft. The series of multi-mode shield machines are simple in structure, single in function and incapable of fully exerting the tunneling advantage of the shield machines, and are in the primary development stage of the multi-mode shield machines.
Therefore, how to provide a multi-geological tunneling device which solves the technical problems is a technical problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide multi-geological tunnel tunneling equipment which adopts a working mode of a three-mode shield tunneling machine and is suitable for rapid tunneling of multiple stratums. The invention also aims to provide a construction method of the multi-geological tunneling equipment.
In order to achieve the purpose, the invention provides multi-geological tunnel tunneling equipment which comprises a shield body, wherein a cutter head capable of excavating tunnel rock soil is arranged at the front part of the shield body, a main drive for driving the cutter head is arranged in the shield body, a host belt machine reserved interface and a spiral conveyor reserved interface are further arranged in the shield body, the host belt machine reserved interface can be provided with a host belt machine, the spiral conveyor reserved interface can be provided with a spiral conveyor, and a shield tail can be assembled at the rear part of the shield body.
Preferably, the device comprises a translation oil cylinder for moving the main belt conveyor and a driving oil cylinder for moving the spiral conveyor; when the host belt conveyor is moved backwards by the translation oil cylinder to be in a non-working position and the spiral conveyor is moved forwards by the driving oil cylinder to be in a working state, the multi-geological tunnel tunneling equipment realizes the conversion from a TBM (tunnel boring machine) mode to an earth pressure mode; when the driving oil cylinder moves the spiral conveyor backwards to be in a non-working state and the translation oil cylinder moves the main belt conveyor forwards to be in a working position, the multi-geological tunnel tunneling equipment realizes the conversion from an earth pressure mode to a TBM mode.
Preferably, the host computer belt feeder with screw conveyer belongs to the system of slagging tap, the system of slagging tap still includes the supporting belt feeder in back, the supporting belt feeder in back be used for with the host computer belt feeder with the dregs of screw conveyer transportation are discharged.
Preferably, the shield further comprises a duct piece assembling system, a temporary supporting system, a hydraulic system, a propelling system and a rear matching system which are arranged behind the shield body.
Preferably, the segment assembling system comprises a segment assembling machine and a segment crane, the segment crane is used for hoisting segments to the lower part of the segment assembling machine, and the segment assembling machine is used for grabbing the segments and arranging the segments on the inner wall of the tunnel after the pose of the segments is adjusted.
Preferably, the temporary support system comprises an arch installing machine and an anchor rod drilling machine, wherein the arch installing machine is connected with the shield tail through a steel structure.
Preferably, the propulsion system comprises a propulsion oil cylinder, the propulsion oil cylinder is arranged on the shield body, and the propulsion oil cylinder is used for extending out and propping against the assembled pipe sheets during tunneling so as to provide tunneling propulsion force by using supporting counter force.
Preferably, the device further comprises a guiding deviation rectifying system arranged on the shield body; the guiding deviation correcting system comprises an articulated oil cylinder and a control system, the articulated oil cylinder is arranged in the middle circumferential direction of the shield body, the shield body is connected with the shield tail through the articulated oil cylinder, and the control system is used for monitoring and controlling the extending amount of the articulated oil cylinder so as to control the tunneling direction.
The invention also provides a construction method of the multi-geological tunnel tunneling equipment, which is applied to the multi-geological tunnel tunneling equipment and comprises the following steps:
reinforcing the periphery of the construction position of the main tunnel;
assembling and debugging the whole equipment;
and cutting an initial tunnel portal, and conveying the cut residue soil through the main belt conveyor or the screw conveyor.
Preferably, the method further comprises the following steps:
the segment erector is assembled and jacked;
different temporary support forms are adopted in different modes;
tunnel forming and post-processing.
Compared with the prior art, the multi-geological tunnel tunneling equipment provided by the invention comprises a shield body, wherein a cutter head capable of excavating tunnel rock soil is arranged at the front part of the shield body, a main drive for driving the cutter head is arranged in the shield body, a host belt machine reserved interface and a spiral conveyor reserved interface are further arranged in the shield body, the host belt machine reserved interface can be provided with a host belt machine, the spiral conveyor reserved interface can be provided with a spiral conveyor, and the rear part of the shield body can be assembled with a shield tail.
The multi-geological tunnel tunneling equipment can realize the conversion of working modes of an earth pressure balance shield machine, a single shield TBM and a double shield TBM, the influence of construction on the ground can be reduced to the minimum degree by using the earth pressure mode under the condition that the stratum structure is unstable, the double shield TBM is adopted in a hard rock stratum with poor self-stability condition, the double shield TBM can realize the quick rock tunneling and the protection of a spiral conveyor by utilizing a main belt conveyor to transport muck, and the single shield TBM is adopted for tunneling in the hard rock stratum with good self-stability condition, so that the quick excavation can be realized, and the construction speed is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a main machine of multi-geological tunneling equipment provided by an embodiment of the invention;
fig. 2 is a schematic structural diagram of a main machine of the multi-geological tunneling equipment in an earth pressure mode according to the embodiment of the invention;
fig. 3 is a schematic structural diagram of a host machine of the multi-geological tunneling equipment in a single shield TBM mode according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a main machine of the multi-geological tunneling apparatus in a double-shield TBM mode according to the embodiment of the present invention.
Wherein:
1-cutter head, 2-reserved interface of main belt conveyor, 3-main belt conveyor, 4-main drive, 5-stabilizer, 6-telescopic oil cylinder, 7-arch erection machine, 8-joist, 9-segment erector, 10-screw conveyor, 11-thrust oil cylinder, 12-shield body, 13-jumbolter, 14-front shield, 15-middle shield and 16-shield tail.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a main machine of a multi-geological tunneling apparatus according to an embodiment of the present invention, fig. 2 is a schematic structural diagram of a main machine of a multi-geological tunneling apparatus according to an embodiment of the present invention in an earth pressure mode, fig. 3 is a schematic structural diagram of a main machine of a multi-geological tunneling apparatus according to an embodiment of the present invention in a single shield TBM mode, and fig. 4 is a schematic structural diagram of a main machine of a multi-geological tunneling apparatus according to an embodiment of the present invention in a double shield TBM mode.
In a first specific embodiment, the multi-geological tunneling equipment provided by the invention comprises a shield body 12, wherein the shield body 12 consists of a front shield 14 and a middle shield 15, the front part of the front shield 14 is provided with a cutter head 1 capable of excavating tunnel rock soil, the inside of the middle shield 15 is provided with a main drive 4 for driving the cutter head 1, the inside of the middle shield 15 is also provided with a slag tapping system, and the rear part of the middle shield 15 is provided with a shield tail 16 capable of being assembled
In this embodiment, the multi-geological tunneling equipment has three modes, and is a three-mode shield tunneling machine tunneling equipment; the slag discharging system comprises a main belt conveyor 3 and a spiral conveyor 10, and a main belt conveyor reserved interface 2 capable of being provided with the main belt conveyor 3 and a spiral conveyor reserved interface capable of being provided with the spiral conveyor 10 are arranged in the shield body 12.
The device adopts a reserved interface mode, and a main belt conveyor 3 and a screw conveyor 10 are respectively installed through the reserved interface when the tunneling mode is changed, so that the muck in the soil bin is transported out; meanwhile, the shield tail 16 needs to be spliced when the single shield TBM is converted into the double shield TBM.
The mode of reserving the interfaces can realize the prevention of remanufacturing of the support point positions and the quick installation of the main belt conveyor 3 and the spiral conveyor 10 in the mode conversion process; and (4) utilizing the support of the shield tail 16 to support the stratum with poor self-stability condition.
During construction of the equipment, cutting is realized through the cutter head 1 during starting and normal tunneling, different tunneling modes are carried out through adjustment of a shield machine structure when the equipment passes through different stratums, specifically, the three-mode shield machine tunneling equipment adopts the cutter head 1 to rapidly excavate in the tunneling process between two tunnels, a steel structure receiving device is adopted at a receiving end, the cutter head 1 excavates a soil layer by using torque provided by a main drive 4, and tunneling in three modes of a soil pressure balance shield machine, a single shield TBM and a double shield TBM can be realized by changing an internal structure.
The influence of construction on the ground can be reduced to the minimum degree by using an earth pressure mode under the condition that the stratum structure is unstable, double-shield TBM is adopted in a hard rock stratum with poor self-stability condition, the double-shield TBM can realize quick rock tunnel exit and the protection of a screw conveyor 10 by using a main belt conveyor 3 to transport muck, and a single-shield TBM construction method is adopted in the hard rock stratum with good self-stability condition for tunneling, so that the quick excavation can be realized, and the construction speed is greatly improved.
It should be noted that the variable frequency motor used as the main drive 4 motor may also adopt a hydraulic motor in a hydraulic drive mode, and the variable frequency motor should also belong to the description scope of the present embodiment.
Further, the slag discharging system comprises a driving motor and a rear matched belt conveyor besides the main belt conveyor 3 and the spiral conveyor 10, and the rear matched belt conveyor is used for discharging the slag soil conveyed by the main belt conveyor 3 and the spiral conveyor 10.
In the embodiment, the screw conveyor 10 is of a shaft type, is fixed on the shield body 12 at a certain angle, and conveys the muck in the soil bin to a rear matched belt conveyor by means of the balance of the soil bin pressure and the water and soil pressure and the rotation of the screw shaft and the blades; the end of the main belt conveyor 3 is arranged in the middle of the cutter head 1, and rock in the soil bin falls on the main belt conveyor 3 and is conveyed to the rear matching belt conveyor by a belt. The slag discharging system ensures that the slag in the soil bin in the tunneling process of the shield tunneling machine is quickly transported to the tail of the rear matched trailer.
Further, the device comprises a translation oil cylinder for moving the main belt conveyor 3 and a driving oil cylinder for moving the spiral conveyor 10, wherein the translation oil cylinder stretches back and forth to realize the back and forth movement of the main belt conveyor 3 and the switching between the working state and the non-working state, and the driving oil cylinder stretches back and forth to realize the back and forth movement of the spiral conveyor 10 and the switching between the working state and the non-working state.
When the translation oil cylinder moves the main belt conveyor 3 backwards to be in a non-working position and the driving oil cylinder moves the spiral conveyor 10 forwards to be in a working state, the multi-geological tunnel tunneling equipment realizes the conversion from a TBM mode to a soil pressure mode; when the driving oil cylinder moves the spiral conveyor 10 backwards to be in a non-working state and the translation oil cylinder moves the main belt conveyor 3 forwards to be in a working position, the multi-geological tunneling equipment realizes the conversion from the soil pressure mode to the TBM mode.
In this embodiment, the displacements of the main belt conveyor 3 and the screw conveyor 10 can be changed movably, so that the mutual conversion between the earth pressure balance shield mode and the TBM mode is simpler and more reliable, the conversion purpose of the tunneling mode in a tunnel is achieved, the complex geological space is adapted, the construction cost is saved, the construction efficiency is improved, the stratum adaptability is high, and the technical advancement is high.
On the basis, a series of back supporting equipment related to tunnel excavation, supporting and duct piece assembly is arranged behind the shield body 12.
In the embodiment, aiming at the problem that the existing multi-mode shield tunneling machine cannot flexibly realize the combination unification of stratum adaptation and quick excavation according to the change of the stratum, the multi-geological tunnel tunneling equipment and the construction method thereof are provided, the tunneling equipment integrates excavation, slag discharge, guiding and supporting, a tunnel is formed in one step, and the composite cutter head 1 is adopted to convey the slag soil in a soil bin to a rear matched belt conveyor through a main machine belt conveyor 3 or a spiral conveyor 10, so that the segment assembling function can be realized. The construction efficiency and the construction safety are greatly improved, the tunneling mode is changed in the tunnel, the most suitable tunneling method is flexibly selected for different stratums, and the construction efficiency and the construction safety are greatly improved.
The concrete reinforcing area at the starting end is directly crushed by the arc-shaped cutter head 1, and can be directly crushed and discharged, so that the shield tunneling machine can successfully finish the starting and greatly improve the efficiency and the safety; and a reinforced concrete reinforcing area is cut at a receiving end in a full-rotation mode (the cylinder extends out), so that higher construction efficiency is realized.
Specifically, the multi-geological tunnel excavation equipment further comprises a segment splicing system, a temporary supporting system, a hydraulic system, a propulsion system and a rear matching system which are arranged behind the shield body 12.
Illustratively, the segment erector system includes a segment erector 9 and a segment crane.
In this embodiment, the segment crane lifts the segment on the supporting dolly in back to segment erector 9 below, and segment erector 9 snatchs and places the segment in the tunnel inner wall through rotation, translation motion after the segment, is responsible for at last screwing up vertical and axial connecting bolt on the segment by the manual work.
Illustratively, the temporary support system comprises an arch erection machine 7 and a jumbolter 13, wherein the arch erection machine 7 is connected with a shield tail 16 through a steel structure.
It should be noted that the telescopic cylinder 6 for extending and retracting the arch erecting machine 7 and the shield tail 16 may be a double-rod hydraulic cylinder or any other type of hydraulic cylinder besides the illustrated single-rod hydraulic cylinder, and the present invention shall fall within the scope of the present embodiment.
In this embodiment, the temporary support system is mainly used for temporary support of an excavated tunnel in a single shield TBM mode of a shield machine, and can achieve the purpose of rapid excavation; the subsequent support is realized by the duct piece assembling system; the shield tail 16 and the arch mounting machine 7 are connected through the telescopic oil cylinder 6, and the reliable transmission of the propelling force is realized.
Wherein, the jumbolter 13 and the segment erector 9 are arranged on the joist 8 behind the shield body 12.
The shield tail 16 is spliced after the arch frame installing machine 7, and then segments are spliced in the shield tail 16 to form a supporting effect on the formed tunnel.
Illustratively, the propulsion system includes a propulsion cylinder 11.
In this embodiment, the thrust cylinder 11 is configured to extend a section of pipe segment against the assembled pipe segment during the driving of the shield machine, and provide a thrust force for driving the shield machine through a support reaction force of the pipe segment.
Exemplary hydraulic systems include concrete injection systems, synchronous grouting systems, bentonite systems, foam systems, industrial water supply and cooling systems, tail grease systems, blowdown systems, post-wall grouting systems, and gravel injection systems. The hydraulic system mainly sprays prepared various slurries to corresponding positions through hydraulic components, and plays roles in lubricating, filling, cleaning and improving the muck on the whole machine.
The rear supporting system comprises a rear supporting trolley, a compressed air system, a dust removal spraying system, a pressure maintaining and breathing system, a secondary air supply system, a power supply system, a guiding system, a control system, a monitoring system, a communication system, a data acquisition system, an illumination system, a fire fighting system and a harmful gas detection system. The front and back workshop is provided with a connecting structure, equipment on each trolley can be installed before leaving the factory, a series of guarantee functions are provided for the tunneling process of the shield tunneling machine, and the aims of quick assembly and quick tunneling are fulfilled.
Further, the device also comprises a guiding deviation rectifying system arranged on the shield body 12.
In this embodiment, the guiding deviation correcting system comprises a hinged oil cylinder and a control system, and the control and the deviation correction of the expected tunneling track of the tunneling machine are realized together. The hinged oil cylinders are arranged in the middle circumferential direction of the shield body 12, a middle shield 15 in the shield body 12 is connected with a shield tail 16 through the hinged oil cylinders, and the tunneling direction is controlled by controlling the extension of each deviation-correcting oil cylinder; and the control system is arranged on a trolley in the main tunnel, monitors the tunneling direction in real time and controls the deviation rectifying oil cylinder to rectify deviation.
In addition, the shield 12 is annular in shape, and has, in addition to the main drive 4 and the like, a man compartment, main components such as the stabilizer 5, and a corresponding support structure.
Specifically, main components such as the main drive 4, the main belt conveyor 3, the screw conveyor 10, the passenger compartment, the stabilizer 5, the arch installing machine 7, and the like, and corresponding support structures are provided inside the shield body 12. The system comprises a slag tapping system, a temporary support system, a rear matching system, an HBW sealing system, a main driving sealing system, a sewage discharging system and an auxiliary propulsion system. The equipment adopts a shield body 12 as a protection structure, main components are arranged inside the circular shield body 12, all the components are connected by adopting a steel structure, and the components are mutually combined together through a control system to form an organic whole.
In order to more clearly illustrate the various modes of the multi-geological tunneling equipment, the composition structure of each mode is now described.
The earth pressure balance shield machine comprises a cutter head 1, a main drive 4, a joist 8, a segment erector 9, a screw conveyer 10, a propulsion oil cylinder 11, a shield body 12, an anchor rod drilling machine 13, a hinged oil cylinder, a hydraulic system, a segment hoisting system, a slag discharging system, a rear matching trolley, a compressed air system, a dust removing and spraying system, a pressure maintaining and breathing system, a secondary air supply system, a power supply system, a guide system, a control system, a monitoring system, a communication system, a data acquisition system, a lighting system, a fire fighting system and a harmful gas detection system. The flange of the cutter head 1 is connected with a main drive 4 through a bolt, the main drive 4 drives the cutter head 1 to rotate to cut soil, the cut soil enters the soil bin and is taken out of the soil bin through the rotation of a spiral conveyor 10 at the bottom, and the residue soil is conveyed to a back matching belt conveyor. The shield attitude deviation occurring in the shield tunnel tunneling process can be corrected through the guiding and controlling system.
The slag discharging system comprises a spiral conveyor 10, a driving motor and a rear matched belt conveyor, and the slag discharging is in a spiral conveying mode. The screw conveyor 10 is of a shaft type, is fixed on the shield body 12 at a certain angle with the shield body 12, and realizes muck conveying by means of balance of soil bin pressure and soil-water pressure and rotation of the screw shaft and the blades; the driving motor is connected to the shell of the screw conveyor 10 and provides power for the screw conveyor 10; the back supporting belt feeder is connected with the slag hole of the screw conveyor 10, and can directly discharge the slag to the tail part of the back supporting trailer through the belt conveyor, so that the slag can be discharged quickly and continuously.
In a single shield TBM mode shield machine, the single shield TBM mode shield machine comprises a cutter head 1, a reserved connector 2 of a main belt machine, the main belt machine 3, a main drive 4, a stabilizer 5, a telescopic oil cylinder 6, an arch frame installing machine 7, a supporting beam 8, a segment assembling machine 9, a propelling oil cylinder 11, a shield body 12, a roof bolt drilling machine 13, a hinged oil cylinder, a hydraulic system, a segment hoisting system, a slag discharging system, a rear matching trolley, a compressed air system, a dust removing and spraying system, a pressure maintaining and breathing system, a secondary air supply system, a power supply system, a guiding system, a control system, a monitoring system, a communication system, a data acquisition system, an illuminating system, a fire fighting system and a harmful gas detection system. A flange of the cutter head 1 is connected with a main drive 4 bearing through a bolt, the main drive 4 drives the cutter head 1 to rotate to cut soil, the cut soil enters the soil bin and goes out of the soil bin through a main belt conveyor 3 in the middle of the soil bin, and residue soil is conveyed to a rear matched belt conveyor. The shield attitude deviation occurring in the shield tunnel tunneling process can be corrected through the guiding and controlling system.
The slag discharging system comprises a host belt conveyor reserved interface 2, a host belt conveyor 3, a driving motor and a rear matched belt conveyor, wherein the host belt conveyor 3 is installed on the host belt conveyor reserved interface 2, one end of the host belt conveyor extends into the soil bin and is fixed on the shield body 12 at a certain angle with the shield body 12, and the slag conveying is realized by driving a belt to move by the motor on the host belt conveyor 3; the motor is connected to the main belt conveyor 3 and provides power for belt movement; the rear matching belt conveyor is connected with the main belt conveyor 3, and can directly discharge the slag to the tail part of the rear matching trailer through the belt conveyor, so that the slag can be discharged quickly and continuously.
In a double-shield TBM mode shield machine, the double-shield TBM mode shield machine comprises a cutter head 1, a reserved connector 2 of a main belt conveyor, the main belt conveyor 3, a main drive 4, a stabilizer 5, a telescopic oil cylinder 6, an arch frame installing machine 7, a supporting beam 8, a segment assembling machine 9, a propulsion oil cylinder 11, a roof bolter 13, a front shield 14, a middle shield 15, a shield tail 16, a hinged oil cylinder, a hydraulic system, a segment hoisting system, a slag discharging system, a rear matching trolley, a compressed air system, a dust removal spraying system, a pressure maintaining and breathing system, a secondary air supply system, a power supply system, a guide system, a control system, a monitoring system, a communication system, a data acquisition system, an illumination system, a fire fighting system and a harmful gas detection system.
The slag discharging system comprises a reserved host belt conveyor interface 2, a host belt conveyor 3, a driving motor and a rear matched belt conveyor. The main belt conveyor 3 is arranged on the main belt conveyor reserved interface 2, one end of the main belt conveyor extends into the soil bin, the main belt conveyor and the shield body 12 are fixed on the shield body 12 at a certain angle, and the movement of a belt is driven by a motor on the main belt conveyor 3 to realize the conveying of the muck; the motor is connected to the main belt conveyor 3 and provides power for belt movement; the rear matching belt conveyor is connected with the main belt conveyor 3, and can directly discharge the slag to the tail part of the rear matching trailer through the belt conveyor, so that the slag can be discharged quickly and continuously.
The invention also provides a construction method of the multi-geological tunnel tunneling equipment, which is applied to the multi-geological tunnel tunneling equipment and comprises the following steps:
reinforcing the periphery of the construction position of the main tunnel;
assembling and debugging the whole equipment;
and (3) cutting an initial tunnel portal, and conveying the cut dregs through a main belt conveyor 3 or a screw conveyor 10.
In the cutting process of the tunneling, the mode of the shield machine is converted according to different stratum geological conditions, a complex stratum is tunneled by using a single shield TBM in a soil pressure balance mode and a stratum with good self-stability condition, and a stratum with poor self-stability condition is tunneled by using a double shield TBM.
In the embodiment, when the stratum is complex, a soil pressure balance mode is adopted for tunneling, the foremost full-section cutter head 1 of the shield cuts the soil body on the front side, the soil body enters the storage sealed cabin behind the cutter head 1, the proper pressure is provided in the cabin, the water and soil pressure of the excavated surface is balanced, the disturbance of the shield propulsion to the soil body of the stratum is reduced, the ground surface settlement is controlled, and the soil residue is continuously discharged to a soil discharge port by the spiral conveyor 10 arranged at the lower part of the sealed cabin during the soil discharge. When the tunneling geological condition is hard rock: when the self-stability condition of the stratum is better, a single shield TBM mode is adopted, the excavation operation can be continuously carried out, the construction speed is high, and the construction period is short. This feature is particularly evident when working over long distances in stable surrounding rock. The excavated surface is smooth, and the stress condition is good under the condition of a round tunnel; when the self-stability condition of the stratum is poor, a double-shield TBM tunneling mode is adopted, and a supporting mode is carried out while excavating, so that the influence of vibration and noise on surrounding residents and structures is small. The construction is safe, the adoption of a closed control chamber, a high-performance dust collector and the like greatly improves the safety and the working environment, and the number of operators is small.
Further, the construction method further comprises the following steps:
splicing and jacking by a segment erector 9;
different temporary support forms are adopted in different modes;
tunnel forming and post-processing.
In summary, the construction method is as follows:
step one, reinforcing the periphery of the construction position of the main tunnel. Reinforcing the soil body of the main tunnel at the originating end, the receiving end and the periphery of the shield tunnel, and installing a support counterforce frame at the originating end to provide support counterforce for originating the shield;
and step two, integrally assembling and debugging the equipment. The method comprises the steps of sequentially installing mechanical parts such as a shield tunnel construction equipment cutter head 1, a reserved connector 2 of a main belt conveyor, a main drive 4, a stabilizer 5, a telescopic oil cylinder 6, a joist 8, a segment erector 9, a propulsion oil cylinder 11, a front shield 14, a middle shield 15, a shield tail 16, a hinged oil cylinder, a rear matching trolley and the like on a laid track, and debugging whether systems such as a hydraulic system, a segment hoisting system, a slag tapping system, a rear matching trolley, a compressed air system, a dust removal spraying system, a pressure maintaining and breathing system, a secondary air supply system, a power supply system, a guide system, a control system, a monitoring system, a communication system, a data acquisition system, a lighting system, a fire fighting system, a harmful gas detection system and the like can normally operate or not. Installing corresponding additional devices when different modes are adopted for tunneling;
thirdly, the cutter head 1 starts to cut an initial tunnel portal, cut dregs are transported to a rear matched belt conveyor through a spiral conveyor 10 or a main belt conveyor 3, the posture of the shield body 12 is constantly noticed, and the posture of the shield is adjusted through a deviation rectifying system when the shield posture deviates from the axis of the tunnel;
and step four, assembling and jacking the segment erector 9. After the propulsion of one stroke is completed, the segment on the rail trolley is conveyed to the position below a segment erector 9 through a segment lifting system, the segment erector starts segment assembling work, after each ring of segment assembling is completed, segment post-grouting is performed through a hydraulic system, gaps between the outer portions of the segments and the excavated tunnel are filled, and the propulsion of one ring is completed;
and fifthly, adopting different forms of temporary support modes in a soil pressure mode, a single shield TBM mode and a double shield TBM mode, performing temporary support on the excavated tunnel through the anchor drilling machine 13 in the TBM working mode, and performing support through the segment in the soil pressure working mode. The front soil body can be stabilized in a mode of advanced reinforcement in the tunneling process of the shield tunneling machine;
and step six, tunnel forming and post-processing.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The multi-geological tunnel tunneling equipment and the construction method thereof provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a many geology tunnelling is equipped, its characterized in that, includes the shield body (12), the front portion of shield body (12) is provided with blade disc (1) that can excavate tunnel ground, the inside of shield body (12) is provided with and is used for the drive main drive (4) of blade disc (1), the inside of shield body (12) still is provided with the host computer belt feeder and reserves interface (2) and screw conveyer and reserves the interface, interface (2) mountable host computer belt feeder (3) are reserved to the host computer belt feeder, screw conveyer reserves interface mountable screw conveyer (10), shield tail (16) can be assembled to the rear portion of shield body (12).
2. Multi-geological tunneling equipment according to claim 1, characterized by comprising a translation cylinder for moving the main belt conveyor (3) and a driving cylinder for moving the screw conveyor (10); when the host belt conveyor (3) is moved backwards by the translation oil cylinder to be in a non-working position and the spiral conveyor (10) is moved forwards by the driving oil cylinder to be in a working state, the multi-geological tunneling equipment realizes the conversion from a TBM (tunnel boring machine) mode to a soil pressure mode; when the driving oil cylinder moves the spiral conveyor (10) backwards to be in a non-working state and the translation oil cylinder moves the main belt conveyor (3) forwards to be in a working position, the multi-geological tunneling equipment realizes the conversion from an earth pressure mode to a TBM mode.
3. The multi-geological tunneling equipment according to claim 1, wherein the main belt conveyor (3) and the screw conveyor (10) belong to a slag tapping system, the slag tapping system further comprises a rear matched belt conveyor, and the rear matched belt conveyor is used for discharging slag soil transported by the main belt conveyor (3) and the screw conveyor (10).
4. The multi-geological tunneling equipment according to any one of claims 1-3, further comprising a segment splicing system, a temporary support system, a hydraulic system, a propulsion system and a rear mating system which are arranged behind the shield body (12).
5. The multi-geological tunneling equipment as claimed in claim 4, wherein the segment assembling system comprises a segment erector (9) and a segment crane, the segment crane is used for hoisting segments to the position below the segment erector (9), and the segment erector (9) is used for grabbing the segments and adjusting the pose of the segments and then placing the segments on the inner wall of the tunnel.
6. Multi-geological tunneling equipment according to claim 5, characterized in that the temporary support system comprises an arch erection machine (7) and a jumbolter (13), the arch erection machine (7) being connected to the shield tail (16) by a steel structure.
7. A multi-geological tunneling apparatus according to claim 5, wherein said propulsion system comprises a propulsion cylinder (11), said propulsion cylinder (11) being disposed on said shield body (12), said propulsion cylinder (11) being adapted to extend during tunneling and bear against the assembled pipe segments to provide a propelling force for tunneling with a supporting counter force.
8. A multi-geological tunneling apparatus according to any one of claims 1-3, further comprising a steering deviation correcting system provided to said shield body (12); the guiding deviation correcting system comprises an articulated oil cylinder and a control system, the articulated oil cylinder is arranged in the middle circumferential direction of the shield body (12), the shield body (12) is connected with the shield tail (16) through the articulated oil cylinder, and the control system is used for monitoring and controlling the extending amount of the articulated oil cylinder so as to control the tunneling direction.
9. A construction method of a multi-geological tunneling apparatus applied to the multi-geological tunneling apparatus according to any one of claims 1 to 8, comprising:
reinforcing the periphery of the construction position of the main tunnel;
assembling and debugging the whole equipment;
and cutting an initial tunnel portal, and conveying the cut dregs through the main belt conveyor (3) or the spiral conveyor (10).
10. The construction method of a multi-geological tunneling apparatus according to claim 9, further comprising:
the segment erector (9) is assembled and jacked;
different temporary support forms are adopted in different modes;
tunnel forming and post-processing.
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| CN202210055500.XA CN114320327A (en) | 2022-01-18 | 2022-01-18 | Multi-geological tunnel tunneling equipment and construction method thereof |
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| CN202210055500.XA CN114320327A (en) | 2022-01-18 | 2022-01-18 | Multi-geological tunnel tunneling equipment and construction method thereof |
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