CN113431587A - Construction method of shield tunnel connection channel - Google Patents
Construction method of shield tunnel connection channel Download PDFInfo
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- CN113431587A CN113431587A CN202110831310.8A CN202110831310A CN113431587A CN 113431587 A CN113431587 A CN 113431587A CN 202110831310 A CN202110831310 A CN 202110831310A CN 113431587 A CN113431587 A CN 113431587A
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- 239000002893 slag Substances 0.000 claims abstract description 9
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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
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
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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
- E21D11/08—Lining with building materials with preformed concrete slabs
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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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/383—Waterproofing; Heat insulating; Soundproofing; Electric insulating by applying waterproof flexible sheets; Means for fixing the sheets to the tunnel or cavity wall
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The application discloses a construction method of a shield tunnel connection channel, wherein an opening position of the connection channel is selected on the side wall of a first shield tunnel which is communicated, concrete patches are arranged at the positions of the first shield tunnel and a second shield tunnel, which correspond to the opening positions, after the strength of the concrete patches reaches a preset strength, anchor cables are oppositely pulled on the concrete patches to fix the concrete patches and segments of the shield tunnel; then, drilling operation is carried out at the opening position to penetrate through the first shield tunnel and the second shield tunnel, the concrete patch is broken and the slag is removed after penetration, and an initial channel is formed; finally, reinforcing the initial channel and installing a fireproof door in the initial channel to form a communication channel; utilize concrete patch and anchor rope to draw in order to guarantee the intensity in first shield tunnel and second shield tunnel, avoid boring the in-process and sink or subside the construction safety problem such as, and consolidate the contact passageway to guarantee the intensity and the security of contact passageway.
Description
Technical Field
The application relates to the technical field of shield tunnel construction, in particular to a construction method of a shield tunnel connection channel.
Background
Due to the limitation of the closed space of the subway, certain potential safety hazards are brought to the operation of the subway, and once the subway is in a fire, the consequences are very serious. The direction of heat waves, toxic gases and the like is consistent with the direction of people stream escape from bottom to top, and the method is particularly unfavorable for people evacuation, escape and the like in the subway.
Aiming at the situation, a communication channel is arranged in the two single-line interval tunnels, so that the hazard value of the fire to the subway is reduced. At present, shield tunneling construction is the main construction method for subway section tunnel construction, but the quantity of communication channels is small, the communication channels are generally located under the existing roads or underground pipelines, most of the communication channels cannot perform precipitation operation, only auxiliary construction measures such as grouting and freezing can be adopted, the construction safety risk is high, and safety accidents and environmental accidents are easy to occur.
Disclosure of Invention
The present application is proposed to solve the above-mentioned technical problems. The embodiment of the application provides a construction method of a shield tunnel connection channel, and the problem that the construction risk is high is solved.
The application provides a construction method of a shield tunnel connection channel, which comprises the following steps: selecting the opening position of the communication channel on the side wall of the first penetrated shield tunnel according to the opening diameter of the communication channel; respectively arranging a first concrete patch and a second concrete patch within a preset radius range at the opening position of the first shield tunnel and the opening position corresponding to the second shield tunnel; the first shield tunnel and the second shield tunnel are shield tunnels which are communicated with each other, and the communication channel is communicated with the first shield tunnel and the second shield tunnel; after the strength of the first concrete patch and the second concrete patch reaches a preset strength, carrying out anchor cable opposite pulling on the first concrete patch and the second concrete patch so as to fix the first concrete patch and the duct piece of the first shield tunnel and fix the second concrete patch and the duct piece of the second shield tunnel; performing a drilling operation at the open location to penetrate the first shield tunnel and the second shield tunnel; breaking the first concrete patch and the second concrete patch and removing slag to form an initial channel; and reinforcing the initial channel and installing a fire door in the initial channel to form the communication channel.
In one embodiment, said performing a drilling operation at said open position comprises: installing a reclining system and drilling equipment in the first shield tunnel; installing an originating sleeve at the open location; wherein the originating sleeve includes a cutter proximate the open position end; the reclining system and the drilling equipment drive the starting casing to execute a drilling action; welding a second casing pipe and the starting casing pipe after the starting casing pipe drills for a preset distance; the reclining system and the drilling equipment drive the welding sleeve to execute a drilling action; wherein, the welding sleeve represents a sleeve formed by welding a plurality of sleeves; and after the welding sleeve is drilled into the preset distance, welding a subsequent sleeve and the welding sleeve, and continuously welding the sleeve until the initial sleeve reaches the segment of the second shield tunnel.
In one embodiment, the reclining system includes a jack; wherein, after the welding sleeve creeps into the preset distance, welding the subsequent sleeve and the welding sleeve comprises: when the length of the welding sleeve remaining in the first shield tunnel is smaller than or equal to a preset value, stopping drilling and contracting the jack; and welding the subsequent sleeve with the welded sleeve.
In one embodiment, the reclining system and the drilling apparatus driving a welded casing to perform a drilling action comprises: determining a base point of the communication channel and the current drilling action; and determining a drilling direction of the current drilling action based on the baseline and the base point.
In an embodiment, said breaking out said first and second concrete patches and removing muck comprises: breaking the first concrete patch and the second concrete patch and performing an excavation operation on soil within the casing.
In an embodiment, the reinforcing the initial channel includes: and grouting operation is carried out in the sleeve, secondary lining is carried out, and a reinforcing ring beam is arranged.
In one embodiment, the sleeve includes a plurality of preformed holes thereon; wherein the grouting operation in the casing comprises: and grouting the outer side of the sleeve from the plurality of reserved holes.
In one embodiment, before the drilling operation at the opening position, the method for constructing the shield tunnel communication passage further comprises: and a first water stopping frame and a second water stopping frame are respectively arranged in the first shield tunnel and the second shield tunnel.
In one embodiment, after the forming of the initial passage, the method for constructing the shield tunnel communication passage further includes: and carrying out node waterproof treatment on the sleeve.
In one embodiment, before the drilling operation is performed at the opening position, the method for constructing the shield tunnel communication passage further includes: and carrying out reinforcement operation on the first shield tunnel and the second shield tunnel.
According to the construction method of the shield tunnel connection channel, the opening position of the connection channel is selected on the side wall of the first shield tunnel which is communicated, concrete patches are arranged at the positions, corresponding to the openings, of the first shield tunnel and the second shield tunnel, and after the strength of the concrete patches reaches preset strength, anchor cables are oppositely pulled on the concrete patches to fix the concrete patches and segments of the shield tunnel; then, drilling operation is carried out at the opening position to penetrate through the first shield tunnel and the second shield tunnel, the concrete patch is broken and the slag is removed after penetration, and an initial channel is formed; finally, reinforcing the initial channel and installing a fireproof door in the initial channel to form a communication channel; utilize concrete patch and anchor rope to drawing in order to guarantee the intensity in first shield tunnel and second shield tunnel, avoid creeping into the in-process and sink or subside the construction safety problem such as to abolish the concrete patch after the completion of drilling, and consolidate the contact passageway, in order to guarantee the intensity and the security of contact passageway.
Drawings
The above and other objects, features and advantages of the present application will become more apparent by describing in more detail embodiments of the present application with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings, like reference numbers generally represent like parts or steps.
Fig. 1 is a schematic flow chart of a construction method of a shield tunnel communication channel according to an exemplary embodiment of the present application.
FIG. 2 is a flow chart illustrating a method of drilling operations provided in an exemplary embodiment of the present application.
Fig. 3 is a schematic flow chart of a construction method of a shield tunnel communication channel according to another exemplary embodiment of the present application.
Fig. 4 is a schematic flow chart of a construction method of a shield tunnel communication channel according to another exemplary embodiment of the present application.
Fig. 5 is a schematic flow chart of a construction method of a shield tunnel communication channel according to another exemplary embodiment of the present application.
Fig. 6 is a schematic structural diagram of construction equipment of a shield tunnel communication channel according to an exemplary embodiment of the present application.
Fig. 7 is a schematic structural diagram of construction equipment of a shield tunnel communication channel according to another exemplary embodiment of the present application.
Fig. 8 is a block diagram of an electronic device provided in an exemplary embodiment of the present application.
Detailed Description
Hereinafter, example embodiments according to the present application will be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are only some embodiments of the present application and not all embodiments of the present application, and that the present application is not limited by the example embodiments described herein.
Fig. 1 is a schematic flow chart of a construction method of a shield tunnel communication channel according to an exemplary embodiment of the present application. As shown in fig. 1, the construction method of the shield tunnel communication passage includes:
step 110: and selecting the opening position of the communication channel on the side wall of the first shield tunnel which is penetrated according to the opening diameter of the communication channel.
This scheme is mainly to the condition of having the circuit of four layers of groundwater in existence, also can be applicable to the construction of other similar circuits of course, and wherein, this four layers of groundwater types are upper strata stagnant water, dive, layer dive, confined water respectively. The first layer is upper layer stagnant water which changes along with seasonal changes and has no obvious change rule, the second layer of underground water is submerged, the annual dynamic state is closely related to atmospheric precipitation, the annual average amplitude of variation is about 1-2 m, the third layer of underground water is interlayer submerged, the annual variation range is about 3-4 m, the fourth layer of underground water is confined water, and the annual variation range is about 2-3 m.
The opening diameter of the communication channel is determined, and an appropriate opening position is selected within the opening range of the communication channel according to the opening diameter, for example, a right-line shield tunnel which is penetrated through can be used as a working surface, and of course, a left-line shield tunnel which is penetrated through can also be used as a working surface. The inner diameter of the first shield tunnel and the inner diameter of the second shield tunnel are 5.8m, the included angle of the opening position in the main tunnel is 69 degrees, and the size of the opening can be borne more than that of the shield tunnel with the inner diameter of 5.4 m.
Step 120: and respectively arranging a first concrete patch and a second concrete patch within a preset radius range at the opening position of the first shield tunnel and the corresponding opening position of the second shield tunnel.
The first shield tunnel and the second shield tunnel are communicated shield tunnels, and the communication channel is communicated with the first shield tunnel and the second shield tunnel. After the opening position is determined, concrete patch setting within a certain range is firstly carried out on the opening position so as to prevent broken duct pieces cut by a drilling machine from being disconnected with the whole duct pieces and scattering. The concrete patch is necessarily larger than the drilling machine, one end of the concrete patch is arranged to be a plane, and the other end of the concrete patch is arranged to be a cambered surface and is consistent with the arc of the main tunnel.
Step 130: after the strength of the first concrete patch and the second concrete patch reaches the preset strength, the anchor cable is oppositely pulled on the first concrete patch and the second concrete patch so as to fix the first concrete patch and the duct piece of the first shield tunnel, and fix the second concrete patch and the duct piece of the second shield tunnel.
After the strength of the first concrete patch and the second concrete patch reaches the preset strength, the anchor cable is carried out on the first concrete patch and the second concrete patch to pull the fixed concrete patch and the duct piece so as to improve the strength of the first concrete patch and the second concrete patch.
Step 140: drilling operations are performed at the open location to penetrate the first shield tunnel and the second shield tunnel.
In the construction preparation stage, a series of construction preparations such as an initial platform of a drilling machine, an initial and receiving sealing device of the drilling machine, assembling and debugging of the drilling machine, installation of a back-rest equipment system, installation of a main tunnel segment reinforcing system, entrance of a casing and the like in the connection channel large-diameter casing drilling construction method need to be completed, and then drilling operation is carried out at an opening position so as to penetrate through a first shield tunnel and a second shield tunnel.
Step 150: and breaking the first concrete patch and the second concrete patch and removing slag to form an initial channel.
And after the drilling work is finished, breaking the first concrete patch and the second concrete patch, cutting redundant casing pipes to enable the radian of the redundant casing pipes to be consistent with the radian of the positive line of the tunnel, and excavating soil in the casing pipes to form an initial channel.
In an embodiment, the specific implementation manner of the step 150 may be: the first concrete patch and the second concrete patch are broken and an excavation operation is performed on the soil within the casing.
Step 160: the initial passageway is reinforced and a fire door is installed within the initial passageway to form a communication passageway.
The method comprises the steps of reinforcing the initial channel in the initial channel to improve the strength and safety of the communication channel, and installing a fireproof door in the communication channel to improve the fireproof safety. Fire doors need to have the function of satisfying the requirements for fire resistance stability, heat insulation and integrity within a predetermined period of time. The fireproof door needs a fireproof partition with certain fire resistance, not only has the function of a common door, but also has the function of preventing the spread fire or the outward diffusion of smoke, and prevents the spread fire within a certain time, so that more time is provided for people to evacuate, and the personal and property safety is ensured, and the size of the fireproof door in the application is 2100 multiplied by 900 mm.
In an embodiment, the specific implementation manner of step 160 may be: and grouting the interior of the sleeve, performing secondary lining and arranging a reinforcing ring beam. The diameter of the cutter of the drilling machine is 20mm wider than that of the casing, and a cavity can appear after the drilling is finished on the casing wall. In order to avoid the occurrence of hollow holes and loose areas between the concrete and the sleeve, the concrete and the sleeve reach the required compactness to prevent settlement. And grouting before applying the secondary molded concrete, wherein the grouting pressure needs to be controlled well, and the gap is densely filled with the grouting as much as possible. After the drilling work of the drilling machine is finished, the sleeve penetrates through the whole connecting channel and enters the whole receiving device, the joints of the first shield tunnel, the second shield tunnel and the connecting channel sleeve are grouted and fixed, and reserved air bags in the starting and receiving ends and the receiving device are inflated, so that gaps which may exist can be blocked. And after all the reinforcing measures and the plugging measures are confirmed to be effective, separating the casing pipe from the drilling machine, and disassembling the drilling machine. And excavating and transporting the soil body in the casing pipe, and backfilling and grouting. And cutting the rest part of the sleeve to ensure that the radian of the sleeve is suitable for the whole tunnel and meets the requirements of detailed waterproof node treatment. Carry out water repellent to the joint of contact passageway and main track tunnel structure, clear up etc. to the earth in the cover pipe, finally reach the degree that does not influence follow-up construction. And grouting is carried out on the wall of the sleeve through the sleeve preformed hole, and grouting pressure is controlled, so that a cavity does not need to appear behind the wall. And removing the plug in the preformed hole of the sleeve, and mounting the grouting equipment on the inner thread pipe hoop for back grouting. In order to achieve the grouting effect according to the grouting requirement, main parameters of backfill grouting selected mainly comprise grouting pressure and grouting speed, wherein the grouting pressure is 0.2-0.5 MPa, and the grouting speed is 5-15L/min. The grouting slurry is selected from micro-expansive cement slurry, and the water-cement ratio is 1: 1. Grouting with a grouting machine, wherein the initial pressure is 0.3MPa, and the final pressure is 0.6 MPa. After the grouting pipes are connected, a water pressing test is firstly used for checking whether a pipeline is smooth before grouting, and then a grouting pump is started for grouting. Specifically, the sleeve comprises a plurality of preformed holes, and the outer side of the sleeve is grouted by the preformed holes.
The application provides a linkage passageway construction method, adopts coring drilling, and the sleeve pipe is followed up, and the sleeve pipe is the structure promptly, and the first sleeve pipe that has the cutter with the rig assembly promptly advances while drilling at linkage passageway opening part, forms the sleeve pipe and imbeds soil, and the intraductal state of filling up the dregs, treats that the sleeve pipe link up the back, clears away the intraductal dregs of sleeve, and the sleeve pipe is just the first branch of contact passageway promptly. The method is not influenced by ground environment and underground water, soil body reinforcement is not considered, the overall risk is relatively small, and therefore the risk in the construction process is reduced.
According to the construction method of the closed shield tunnel connection channel, the opening position of the connection channel is selected on the side wall of the first shield tunnel which is communicated, concrete patches are arranged at the positions, corresponding to the openings, of the first shield tunnel and the second shield tunnel, and after the strength of the concrete patches reaches preset strength, anchor cables are oppositely pulled on the concrete patches to fix the concrete patches and segments of the shield tunnel; then, drilling operation is carried out at the opening position to penetrate through the first shield tunnel and the second shield tunnel, the concrete patch is broken and the slag is removed after penetration, and an initial channel is formed; finally, reinforcing the initial channel and installing a fireproof door in the initial channel to form a communication channel; utilize concrete patch and anchor rope to drawing in order to guarantee the intensity in first shield tunnel and second shield tunnel, avoid creeping into the in-process and sink or subside the construction safety problem such as to abolish the concrete patch after the completion of drilling, and consolidate the contact passageway, in order to guarantee the intensity and the security of contact passageway.
FIG. 2 is a flow chart illustrating a method of drilling operations provided in an exemplary embodiment of the present application. As shown in fig. 2, the step 140 may include:
step 141: and installing a reclining system and drilling equipment in the first shield tunnel.
Installing a back rest system and drilling equipment in the first shield tunnel, and adjusting vertical and horizontal axis coordinates to enable the vertical and horizontal axis coordinates to be matched with the position of the connection channel construction machinery, so that overlarge deviation of the position is avoided; and debugging the reclining system after the installation is finished. And carrying out combined installation and debugging on the drilling machine on the ground, and carrying out installation of an originating platform and the drilling machine of the drilling machine at a construction working face. Installation is focused on the accuracy of the position of the opening of the communication channel and the degree of engagement with the reclining system. After the installation is finished, the whole system needs to be subjected to fine adjustment and inspection and debugging.
Step 142: installing an originating sleeve at the open location; wherein the originating sleeve includes a cutter at an end proximate the open position.
Cutters are typically provided on the originating casing to cut soil during drilling thereof to effect advancement of the originating casing and other casings therethrough to traverse the first shield tunnel and the second shield tunnel. The length of the casing (including the starting casing) is 1.4m, the thickness is 22mm, the weight is 2.5t, and crossed I-shaped steel is added in the casing for temporary support in the processes of processing, manufacturing and transportation in order to ensure that the casing is a perfect circle. When the sleeve is conveyed to the construction working face, the sleeve is welded with the previous sleeve and is arranged on the drilling machine, and the I-shaped steel can be detached at the rear. And at least 24 hours ahead of time, 2 layers of epoxy asphalt paint on the surface of the casing are needed to avoid damage to the casing during drilling.
Step 143: the setback system and the drilling apparatus drive the originating casing to perform a drilling action.
And the drilling equipment is driven by the reclining system to drive the starting casing to rotate and advance, namely the drilling action of the starting casing is realized, so that the cutter on the starting casing cuts soil.
Step 144: after the originating casing is drilled a predetermined distance, the second casing is welded to the originating casing.
After the starting casing pipe is drilled for a predetermined distance, for example, after the starting casing pipe is drilled to about 20mm (i.e., the length left in the first shield tunnel is about 20 mm), the drilling is stopped, the jack is retracted, the second casing pipe is welded to the starting casing pipe, and the jack is further jacked.
Step 145: the back-rest system and the drilling equipment drive the welding sleeve to execute the drilling action; the welded sleeve refers to a sleeve formed by welding a plurality of sleeves.
In the drilling process, a single sleeve is continuously welded to the welded sleeve which is drilled, so that the length of the welded sleeve is increased, and the welded sleeve is driven by the reclining system and the drilling equipment to perform the drilling action after welding, so that the welded sleeve is continuously drilled into the second shield tunnel, and the first shield tunnel and the second shield tunnel are penetrated through.
In an embodiment, a specific implementation manner of the step 145 may be: a baseline of the communication channel and a base point of the current drilling action are determined, and a drilling direction of the current drilling action is determined based on the baseline and the base point. Before the drilling machine begins to drill, a base line and a base point are selected, and the accuracy degree of the guide support is guaranteed. The base line is the center line of the communication channel design, and the base point is the temporary level point. The base line and the base point must be firmly arranged, and the guide bracket cannot move in the whole construction process. Especially the baseline, if the direction is slightly shifted, it may cause a particularly large error. Controlling the vertical direction: the direction of the drilling machine is mainly controlled by the unilateral thrust of the jack, the relation between the unilateral thrust of the jack and the attitude variation of the drilling machine is very discrete, when the drilling machine bends downwards, the thrust of the jack at the lower side can be increased, and when the drilling machine bends upwards, the thrust of the jack at the upper side can be increased. Control in the horizontal direction: the principle of correcting the deviation in the vertical direction is the same, if the deviation is left, the propelling pressure of the left jack needs to be increased, and if the deviation is right, the propelling pressure of the right jack needs to be increased for adjustment, so that the drilling machine drills along the direction of the designed plane route.
Step 146: and after the welding sleeve drills into a preset distance, welding the subsequent sleeve and the welding sleeve, and continuously welding the sleeve until the starting sleeve reaches the segment of the second shield tunnel.
In one embodiment, the reclining system includes a jack; the specific implementation manner of the step 146 may be: and when the length of the welding sleeve remaining in the first shield tunnel is less than or equal to a preset value, stopping drilling, retracting the jack, and welding the subsequent sleeve and the welding sleeve. And after the welded casing is drilled for a preset distance, for example, after the welded casing is drilled to about 20mm (namely, the length left in the first shield tunnel is about 20 mm), stopping drilling, retracting the jack, welding the subsequent casing and the welded casing, and continuously jacking the jack. Normally creep into a section distance, the drilling machine cuts to be close to second shield tunnel section of jurisdiction department, slows down the speed of creeping into and advancing with the top, and the back of finishing is strutted to supporting around the section of jurisdiction contact passageway opening of second shield tunnel in left line work face during the period, carries out the drilling cutting to the second shield tunnel section of jurisdiction.
The method comprises the steps of cutting a concrete patch by a specially designed drilling machine and then cutting a tunnel segment, slightly slowing down the drilling speed after the tunnel segment is cut and drilled, jacking the drilling machine by a device system, starting a casing pipe drilling machine and then cutting a soil part, stopping drilling after the soil part is drilled to about the remaining 20mm, contracting a jack, welding the next casing pipe, and continuously jacking the jack. Drilling to the soil, and gradually adjusting the drilling speed from 4r/min to 1 r/min.
Fig. 3 is a schematic flow chart of a construction method of a shield tunnel communication channel according to another exemplary embodiment of the present application. As shown in fig. 3, before step 140, the method for constructing a shield tunnel communication channel may further include:
step 170: and a first water stopping frame and a second water stopping frame are respectively arranged in the first shield tunnel and the second shield tunnel.
And the water stopping frame body is installed outside the concrete patch and is fixed by expansion bolts, and the diameter of the water stopping frame body is slightly larger than that of the sleeve. The open end of the water stopping frame body is provided with a Y-shaped rubber sealing strip device pointing to the outer side of the tunnel structure in a circle, and the sealing strip is fixed in the water stopping box body through a pressing strip. Wherein, there is a circle of inlet tubes on the water-stop box body, which can be opened and closed at will, and is used for cooling when cutting the pipe piece. And the first pipe joint enters the water stop frame body, and the concrete patch and the pipe piece begin to be cut, wherein the drilling speed of the drilling machine is 4 r/min. When cutting the concrete patch and the duct piece, the temperature is reduced through the water pipe in the water stopping frame body. The water stopping frame body blocks the silt gushed out when the penetrating duct piece is cut, so that the silt is prevented from running off, and the integral instability, the upper part settlement and the like are caused. Attention is paid to the close fit degree of the concrete patch and the water-stopping frame body and the close fit and fastening degree of the whole body and the duct piece, and the water-stopping rubber on the water-stopping frame body needs to be checked to prevent excessive silt from overflowing.
Fig. 4 is a schematic flow chart of a construction method of a shield tunnel communication channel according to another exemplary embodiment of the present application. As shown in fig. 4, after step 150, the method for constructing a shield tunnel communication channel may further include:
step 180: and carrying out node waterproof treatment on the sleeve.
Carry out water repellent to the joint of contact passageway and first shield tunnel, second shield tunnel structure, clear up etc. to the earth in the cover pipe, finally reach the degree that does not influence follow-up construction. Whether the corner part connected between the duct piece and the sleeve leaks water is checked, the cotton silk and the asbestos ash need to be tamped tightly, and all the steps need to reach the standard. So as to achieve the effect of preventing water leakage.
Fig. 5 is a schematic flow chart of a construction method of a shield tunnel communication channel according to another exemplary embodiment of the present application. As shown in fig. 5, before step 140, the method for constructing a shield tunnel communication channel may further include:
step 190: and carrying out reinforcement operation on the first shield tunnel and the second shield tunnel.
And after the sleeve wall post-grouting is finished, achieving a certain standard, constructing the reinforcing ring beam and the secondary lining, removing the reinforcing measure of the main line duct piece after the secondary lining is finished and the strength is high, and cleaning the site. After the connection channelized construction is finished, soil is cleaned up, and the sleeve pipe is a connection channel structure, which is equivalent to the primary support of a connection channel. Setting the thickness of the secondary lining to be 200mm, selecting C40 concrete, and carrying out reinforcement construction according to structural stress. Attention is paid to the coordination relationship between the node waterproof construction and the reinforcing ring beam construction.
Fig. 6 is a schematic structural diagram of construction equipment of a shield tunnel communication channel according to an exemplary embodiment of the present application. As shown in fig. 6, the construction equipment 60 of the shield tunnel communication passage includes: an opening position selection module 61, configured to select, according to the opening diameter of the communication channel, an opening position of the communication channel on the sidewall of the first shield tunnel that has already been penetrated; the concrete patch setting module 62 is used for respectively setting a first concrete patch and a second concrete patch within a preset radius range at the opening position of the first shield tunnel and the corresponding opening position of the second shield tunnel; the anchor cable opposite pulling module 63 is used for performing opposite pulling on the anchor cables on the first concrete patch and the second concrete patch after the strength of the first concrete patch and the second concrete patch reaches the preset strength so as to fix the first concrete patch and the duct piece of the first shield tunnel and fix the second concrete patch and the duct piece of the second shield tunnel; a drilling operation module 64 for performing a drilling operation at the open position to penetrate the first shield tunnel and the second shield tunnel; an initial channel forming module 65 for breaking the first concrete patch and the second concrete patch and removing the slag to form an initial channel; and a communication passage forming module 66 for reinforcing the initial passage and installing the fire door in the initial passage to form a communication passage.
According to the construction equipment for the closed shield tunnel connection channel, the opening position of the connection channel is selected on the side wall of the first penetrated shield tunnel through the opening position selection module 61, the concrete patch setting module 62 is used for setting the concrete patches at the corresponding opening positions of the first shield tunnel and the second shield tunnel, and after the strength of the concrete patches reaches the preset strength, the anchor cable opposite-pulling module 63 carries out anchor cable opposite-pulling on the concrete patches so as to fix the concrete patches and the segments of the shield tunnel; then, the drilling operation module 64 performs a drilling operation at the opening position to penetrate the first shield tunnel and the second shield tunnel, and the initial passage forming module 65 breaks the concrete patch and removes the slag after penetration to form an initial passage; finally, the communication channel forming module 66 reinforces the initial channel and installs the fire door in the initial channel to form a communication channel; utilize concrete patch and anchor rope to drawing in order to guarantee the intensity in first shield tunnel and second shield tunnel, avoid creeping into the in-process and sink or subside the construction safety problem such as to abolish the concrete patch after the completion of drilling, and consolidate the contact passageway, in order to guarantee the intensity and the security of contact passageway.
In an embodiment, the initial channel forming module 65 may be further configured to: the first concrete patch and the second concrete patch are broken and an excavation operation is performed on the soil within the casing.
In one embodiment, the communication channel forming module 66 may be further configured to: and grouting the interior of the sleeve, performing secondary lining and arranging a reinforcing ring beam.
In an embodiment, the drilling operation module 64 may be further configured to: installing a reclining system and drilling equipment in a first shield tunnel; installing an originating sleeve at the open location; wherein the originating sleeve includes a cutter at an end proximate the open position; the back-rest system and the drilling equipment drive the starting casing to execute the drilling action; welding the second casing pipe and the starting casing pipe after the starting casing pipe drills into a preset distance; the back-rest system and the drilling equipment drive the welding sleeve to execute the drilling action; the welded sleeve is formed by welding a plurality of sleeves; and after the welding sleeve drills into a preset distance, welding the subsequent sleeve and the welding sleeve, and continuously welding the sleeve until the starting sleeve reaches the segment of the second shield tunnel.
Fig. 7 is a schematic structural diagram of construction equipment of a shield tunnel communication channel according to another exemplary embodiment of the present application. As shown in fig. 7, the construction equipment 60 of the shield tunnel communication passage may further include: and the water stopping module 67 is used for installing a first water stopping frame and a second water stopping frame in the first shield tunnel and the second shield tunnel respectively.
In an embodiment, as shown in fig. 7, the construction equipment 60 of the shield tunnel communication passage may further include: and the waterproof module 68 is used for performing node waterproof treatment on the sleeve.
In an embodiment, as shown in fig. 7, the construction equipment 60 of the shield tunnel communication passage may further include: and a tunnel reinforcing module 69 for performing a reinforcing operation on the first shield tunnel and the second shield tunnel.
Next, an electronic apparatus according to an embodiment of the present application is described with reference to fig. 8. The electronic device may be either or both of the first device and the second device, or a stand-alone device separate from them, which stand-alone device may communicate with the first device and the second device to receive the acquired input signals therefrom.
FIG. 8 illustrates a block diagram of an electronic device in accordance with an embodiment of the present application.
As shown in fig. 8, the electronic device 10 includes one or more processors 11 and memory 12.
The processor 11 may be a Central Processing Unit (CPU) or other form of processing unit having data processing capabilities and/or instruction execution capabilities, and may control other components in the electronic device 10 to perform desired functions.
Memory 12 may include one or more computer program products that may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory. The volatile memory may include, for example, Random Access Memory (RAM), cache memory (cache), and/or the like. The non-volatile memory may include, for example, Read Only Memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer readable storage medium and executed by the processor 11 to implement the method for constructing the shield tunnel communication channel of the various embodiments of the present application described above and/or other desired functions. Various contents such as an input signal, a signal component, a noise component, etc. may also be stored in the computer-readable storage medium.
In one example, the electronic device 10 may further include: an input device 13 and an output device 14, which are interconnected by a bus system and/or other form of connection mechanism (not shown).
When the electronic device is a stand-alone device, the input means 13 may be a communication network connector for receiving the acquired input signals from the first device and the second device.
The input device 13 may also include, for example, a keyboard, a mouse, and the like.
The output device 14 may output various information including the determined distance information, direction information, and the like to the outside. The output devices 14 may include, for example, a display, speakers, a printer, and a communication network and its connected remote output devices, among others.
Of course, for simplicity, only some of the components of the electronic device 10 relevant to the present application are shown in fig. 8, and components such as buses, input/output interfaces, and the like are omitted. In addition, the electronic device 10 may include any other suitable components depending on the particular application.
In addition to the above-described methods and apparatus, embodiments of the present application may also be a computer program product comprising computer program instructions which, when executed by a processor, cause the processor to perform the steps in the method of construction of a shield tunnel communication tunnel according to various embodiments of the present application described in the "exemplary methods" section of this specification above.
The computer program product may be written with program code for performing the operations of embodiments of the present application in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server.
Furthermore, embodiments of the present application may also be a computer readable storage medium having stored thereon computer program instructions, which, when executed by a processor, cause the processor to perform the steps in the method of constructing a shield tunnel communication tunnel according to various embodiments of the present application described in the above section "exemplary method" of the present specification.
The computer-readable storage medium may take any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may include, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The foregoing describes the general principles of the present application in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present application are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present application. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the foregoing disclosure is not intended to be exhaustive or to limit the disclosure to the precise details disclosed.
The block diagrams of devices, apparatuses, systems referred to in this application are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".
It should also be noted that in the devices, apparatuses, and methods of the present application, the components or steps may be decomposed and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present application.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.
Claims (10)
1. A construction method of a shield tunnel connection channel is characterized by comprising the following steps:
selecting the opening position of the communication channel on the side wall of the first penetrated shield tunnel according to the opening diameter of the communication channel;
respectively arranging a first concrete patch and a second concrete patch within a preset radius range at the opening position of the first shield tunnel and the opening position corresponding to the second shield tunnel; the first shield tunnel and the second shield tunnel are shield tunnels which are communicated with each other, and the communication channel is communicated with the first shield tunnel and the second shield tunnel;
after the strength of the first concrete patch and the second concrete patch reaches a preset strength, carrying out anchor cable opposite pulling on the first concrete patch and the second concrete patch so as to fix the first concrete patch and the duct piece of the first shield tunnel and fix the second concrete patch and the duct piece of the second shield tunnel;
performing a drilling operation at the open location to penetrate the first shield tunnel and the second shield tunnel;
breaking the first concrete patch and the second concrete patch and removing slag to form an initial channel; and
reinforcing the initial channel and installing a fire door within the initial channel to form the communication channel.
2. The method of constructing a shield tunnel communication passage according to claim 1, wherein said performing a drilling operation at said open position comprises:
installing a reclining system and drilling equipment in the first shield tunnel;
installing an originating sleeve at the open location; wherein the originating sleeve includes a cutter proximate the open position end;
the reclining system and the drilling equipment drive the starting casing to execute a drilling action;
welding a second casing pipe and the starting casing pipe after the starting casing pipe drills for a preset distance;
the reclining system and the drilling equipment drive the welding sleeve to execute a drilling action; wherein, the welding sleeve represents a sleeve formed by welding a plurality of sleeves; and
and after the welding sleeve is drilled into the preset distance, welding a subsequent sleeve and the welding sleeve, and continuously welding the sleeve until the initial sleeve reaches the segment of the second shield tunnel.
3. The method of constructing a shield tunnel communication passage according to claim 2, wherein the reclining system includes a jack; wherein, after the welding sleeve creeps into the preset distance, welding the subsequent sleeve and the welding sleeve comprises:
when the length of the welding sleeve remaining in the first shield tunnel is smaller than or equal to a preset value, stopping drilling and contracting the jack; and
and welding the subsequent sleeve and the welding sleeve.
4. The method for constructing the shield tunnel communication passage according to claim 2, wherein the reclining system and the drilling equipment drive the welding sleeve to perform a drilling action comprises:
determining a base point of the communication channel and the current drilling action; and
determining a drilling direction of the current drilling action based on the baseline and the base point.
5. The method of claim 1, wherein the breaking the first concrete patch and the second concrete patch and removing the slag comprises:
breaking the first concrete patch and the second concrete patch and performing an excavation operation on soil within the casing.
6. The method for constructing the shield tunnel communication channel according to claim 1, wherein the reinforcing the initial channel comprises:
and grouting operation is carried out in the sleeve, secondary lining is carried out, and a reinforcing ring beam is arranged.
7. The method for constructing the shield tunnel communication passage according to claim 6, wherein the sleeve includes a plurality of prepared holes; wherein the grouting operation in the casing comprises:
and grouting the outer side of the sleeve from the plurality of reserved holes.
8. The method of constructing a shield tunnel communication passage according to claim 1, further comprising, before said drilling operation at said open position:
and a first water stopping frame and a second water stopping frame are respectively arranged in the first shield tunnel and the second shield tunnel.
9. The method for constructing the shield tunnel communication passage according to claim 1, further comprising, after the forming of the initial passage:
and carrying out node waterproof treatment on the sleeve.
10. The method of constructing a shield tunnel communication passage according to claim 1, further comprising, before performing a drilling operation at the opening position:
and carrying out reinforcement operation on the first shield tunnel and the second shield tunnel.
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Cited By (1)
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| CN113431587B (en) | 2023-07-25 |
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