CN111852487A - Stratum instability prevention type tunneling device and construction method thereof - Google Patents
Stratum instability prevention type tunneling device and construction method thereof Download PDFInfo
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- CN111852487A CN111852487A CN202010517866.5A CN202010517866A CN111852487A CN 111852487 A CN111852487 A CN 111852487A CN 202010517866 A CN202010517866 A CN 202010517866A CN 111852487 A CN111852487 A CN 111852487A
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- 230000005641 tunneling Effects 0.000 title claims abstract description 112
- 238000010276 construction Methods 0.000 title claims abstract description 107
- 230000002265 prevention Effects 0.000 title claims abstract description 28
- 239000002689 soil Substances 0.000 claims abstract description 28
- 238000009412 basement excavation Methods 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 24
- 230000008569 process Effects 0.000 abstract description 19
- 229910000746 Structural steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0642—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end
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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
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/093—Control of the driving shield, e.g. of the hydraulic advancing cylinders
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention belongs to the technical field of underground engineering construction, and particularly relates to a stratum instability prevention type tunneling device and a construction method thereof; the stability of the excavation face of the underground construction tunneling machine is further improved, and unstable collapse of the stratum at the upper part of the excavation face is avoided, the underground construction tunneling machine comprises the underground construction tunneling machine, a machine body cap peak is arranged at the front end of the machine body of the underground construction tunneling machine, a plurality of propelling sliding grooves are arranged on the machine body cap peak, propelling sliding blocks matched with the propelling sliding grooves are arranged in the propelling sliding grooves, unstable-preventing propelling unit bodies are arranged on the propelling sliding blocks, and the unstable-preventing propelling unit bodies are distributed in a closed loop mode along the tunneling operation section of the tunneling machine; a propelling power device is connected to the propelling slide block, and the power source of the propelling power device is provided by the underground construction heading machine; the stratum instability prevention type tunneling device and the construction method thereof are greatly suitable for construction operation requirements of soft soil layers or special stratums or special working conditions; the construction risk in the underground tunneling construction process is greatly reduced.
Description
Technical Field
The invention belongs to the technical field of underground engineering construction; in particular to a stratum instability prevention type tunneling device and a construction method thereof.
Background
Underground construction heading machines such as shield tunneling machines, pipe-jacking machines and the like are widely applied to underground projects such as urban subways, street crossing channels, comprehensive pipe galleries and the like at present due to the advantages of high mechanization degree, high construction speed, good safety and the like; however, safety accidents caused in the construction process of the underground construction heading machine also frequently occur, and particularly in the underground construction process of which the stratum structure is a soft soil layer, the soft soil refers to saturated clay with high compressibility, large water content and low bearing capacity; in the process of underground construction operation in a soft soil stratum, construction safety risks such as burying of construction machinery, slurry leakage on the ground surface, sinking and bulging on the ground surface, sinking of buildings and the like often occur, and the reason is mainly caused by instability of an excavation structural plane; however, in the prior art, reinforcing methods such as pressurization, air entrainment, mud injection, grouting and the like are mostly adopted, and the methods can improve the structural stability of the excavation surface to a certain extent, but due to the fact that the differences of strata at different geographical positions are large, geological problems are difficult to predict in advance, and when a soft soil layer is a special stratum or under special working conditions, such as a sand layer, a hard stratum above the soft soil layer and barrier treatment in the stratum, the conventional soft soil layer excavation surface stabilizing method is difficult to achieve; therefore, it is very necessary to provide a device for preventing the unstable excavation of the stratum and a construction method thereof.
Disclosure of Invention
The invention aims to:
the device and the method have the advantages that the stability of the excavation face of the underground construction tunneling machine is greatly improved, the unstable collapse of the stratum at the upper part of the excavation face is effectively avoided, and the device and the method are greatly suitable for construction operation requirements of soft soil layers or special strata or special working conditions; the tunneling safety performance of the underground construction tunneling machine is greatly improved, and the construction risk in the underground tunneling construction operation process is greatly reduced.
The technical scheme of the invention is as follows:
in order to overcome the defects of the prior art, the invention provides a tunneling device for preventing the stratum from being unstable, which comprises an underground construction tunneling machine, wherein the front end of a machine body of the underground construction tunneling machine is provided with a machine body brim, and the machine body brim is distributed in a closed loop along the tunneling operation section of the tunneling machine; a plurality of propelling chutes are arranged on the machine body brim, propelling slide blocks matched with the propelling chutes are arranged in the propelling chutes, anti-destabilization propelling unit bodies are arranged on the propelling slide blocks, and the anti-destabilization propelling unit bodies are also distributed in a closed loop manner along the tunneling operation section of the tunneling machine; the propelling slide block is connected with a propelling power device, and the power source of the propelling power device is provided by the underground construction heading machine.
The underground construction tunneling machine comprises a shield tunneling machine, a pipe jacking machine, an open tunneling machine or a closed chest tunneling machine; the machine body cap peak is fixedly arranged at the front end of the machine body of the corresponding underground construction heading machine.
The anti-destabilization propulsion unit body is a rigid structure panel or a composite bearing type structure panel; the front ends of the instability-preventing propulsion unit bodies are provided with propulsion blade angles.
The propulsion power device comprises but is not limited to a hydraulic power device, a pneumatic power device, an electromagnetic power device, a threaded power device and a rack and pinion power device.
And reinforcing structure steel beams are further arranged in the anti-destabilization propulsion unit body and are arranged in the anti-destabilization propulsion unit body in parallel or in a staggered and uniform manner.
And an auxiliary supporting unit of a jack and a supporting plate is arranged on the instability-preventing propulsion unit body.
The instability-preventing propulsion unit bodies are arranged along the tunneling operation section of the tunneling machine in an integrated structure or in a sectional structure.
The distributed propulsion control unit is also arranged on the underground construction heading machine body and is used for preventing the integral structure of the instability-preventing propulsion unit body from advancing/retracting; or segmented advancement/retraction of a segmented structure.
A construction method of a stratum instability prevention type tunneling device comprises any one of the stratum instability prevention type tunneling devices, and the construction method comprises the following steps:
(1) and excavating a vertical shaft: completing construction of an originating well and a receiving well;
(2) and equipment installation: the front end of a machine body of the underground construction tunneling machine is provided with a machine body cap peak, and the outer end surface of the machine body cap peak is provided with an anti-instability propulsion unit body; the instability-preventing propulsion unit body can be installed in an integral structure or in a segmented structure, and the section shape of the instability-preventing propulsion unit body comprises but is not limited to a circle, a rectangle, a quasi-rectangle and a horseshoe; a propulsion power device is arranged between the instability-preventing propulsion unit body and the machine body brim and is connected with a propulsion control unit;
(3) starting operation: synchronously starting the underground construction tunneling machine and the propulsion power device, and pushing the instability-preventing propulsion unit body to a soil layer in front of the excavation surface by the propulsion power device to form a closed stable layer in the soil body of the excavation surface;
(4) and tunneling operation: the underground construction heading machine carries out heading/jacking operation construction to the receiving well, and the propulsion power device drives the instability-preventing propulsion unit body to carry out synchronous retraction operation while the underground construction heading machine carries out heading/jacking operation construction, so that the operation synchronization of the underground construction heading machine and the instability-preventing propulsion unit body is kept consistent; keeping the soil body in front of the tunneling/jacking operation of the underground construction tunneling machine in the closed-loop space of the instability-preventing propulsion unit body all the time; the propulsion control unit controls the propulsion/retraction of an integrated structure or the subsection propulsion/retraction of a sectional structure of the instability-preventing propulsion unit body;
(5) And receiving operation: repeating the step (3) and the step (4) until the construction operation interval is completed, and hoisting and recovering the equipment in the receiving well;
(6) and site recovery: and performing top cover construction on the starting well and the receiving well to recover the original appearance of the site.
When the excavation face soil structure layer is good in stability, the instability-preventing propulsion unit body is kept at the position of the outer end face of the machine body cap peak, and the underground construction heading machine normally conducts heading/jacking operation construction.
The invention has the beneficial effects that:
1. according to the stratum instability prevention type tunneling device and the construction method thereof, the instability prevention propulsion unit body forms the closed annular instability prevention protection surface in the deep soil layer in front of the excavation surface, so that the disturbance of the tunneling machine to the tunneling soil body in the tunneling process is further reduced, and the sinking and rising of the ground surface in the tunneling process are avoided; when the heading machine is stopped and enters the warehouse, the annular soil body of the front warehouse of the heading machine is isolated by the annular instability-preventing protection surface, so that the pressure relief deformation or falling risk of the soil body is avoided, and the construction safety of warehouse-entering operators is greatly guaranteed.
2. According to the stratum instability prevention type tunneling device and the construction method thereof, the designed and installed instability prevention propulsion unit body can meet the use and installation requirements of any underground construction tunneling device, and the universality is high; meanwhile, flexible installation and adjustment can be carried out according to the specific structure of the construction tunneling section.
3. According to the stratum instability prevention type tunneling device and the construction method thereof, the instability prevention propulsion unit body can be integrally or locally stretched according to specific construction working conditions, the flexible construction tunneling processing capacity of the tunneling machine for different construction working conditions is greatly improved, and the safety risk in the construction tunneling operation process is greatly reduced.
Drawings
Fig. 1 is a schematic view of the overall arrangement structure of the tunneling device of the invention;
FIG. 2 is a schematic view of the overall arrangement structure of the heading device of the invention;
figure 3 is a schematic view of the assembly arrangement of the ripper apparatus of the present invention;
FIG. 4 is a schematic diagram of the design structure of the anti-destabilization propulsion unit body of the invention;
fig. 5 is a first structural schematic diagram of the tunneling device for tunneling operation according to the present invention;
fig. 6 is a second structural schematic diagram of the tunneling device of the present invention for performing tunneling operation;
fig. 7 is a third schematic structural view of the heading device of the present invention for heading operation;
FIG. 8 is a first view illustrating an installation structure of the extended-range pushing structure of the present invention;
fig. 9 is a second schematic view of the installation structure of the stroke-increasing pushing structure of the present invention.
In the figure: 1 is an underground construction tunneling machine; 2 is a machine body brim; 3 is a pushing chute; 4 is a pushing slide block; 5 is an anti-destabilization propulsion unit body; 6 is a propulsion power device; 7 is a thrust blade angle; 8 is a reinforced structural steel beam; 9 is an auxiliary supporting unit; 10 is a propulsion control unit; 11 is a pushing frame; 12 is a connecting fixture block; 13 is a linkage connecting rod; 14 is a linkage stop.
Detailed Description
The following detailed description of specific embodiments of the invention is made with reference to the accompanying drawings.
As shown in fig. 1 to 7, in order to conveniently display the position relationship between the anti-destabilization propulsion unit and the machine body, fig. 1, 2 and 3 do not show the cutter head, the screw conveyor and the devices inside the machine body, and only corresponding main driving holes and screw conveyor holes are reserved on the front panel of the machine body to display the effect, but do not represent that the machine body protected by the present invention is limited to the ones listed in the drawings.
In the structural design of the invention, the invention provides a stratum instability prevention type tunneling device which comprises an underground construction tunneling machine 1, wherein the outer diameter of a machine body is 6m, the thickness of a cutter head is 50cm, a machine body cap peak 2 is arranged at the front end of the machine body of the underground construction tunneling machine, the machine body cap peak is fixedly arranged at the front end of the machine body in a bolt connection, welding, hinging and other modes and is used as a bearing structural member, and the machine body cap peak is distributed in a closed loop mode along the tunneling operation section of the tunneling machine; a plurality of propelling chutes 3 are arranged on the brim of the machine body, propelling slide blocks 4 matched with the propelling chutes are arranged in the propelling chutes, anti-destabilization propelling unit bodies 5 are arranged on the propelling slide blocks, and the anti-destabilization propelling unit bodies are also distributed in a closed loop manner along the tunneling operation section of the tunneling machine; the invention aims to form a closed annular anti-instability protection surface in a deep soil layer in front of an excavation surface through an anti-instability propulsion unit body, further reduces the disturbance of the tunneling machine to a tunneling soil body in the tunneling process, thereby avoiding the sinking and rising of the earth surface in the tunneling process, simultaneously avoiding the pressure release deformation or falling risk of the soil body, and greatly ensuring the construction safety of warehouse entry operators; the propulsion guide mode through spout and slider is convenient and fast's direction connection mode among the engineering field, however in specific use, still can be used for connecting the propulsion of unstability propulsion unit body and the direction process that contracts of withdrawing through guide structure such as drive connecting rod, guide sleeve.
Preferably, the heading machine body of the stratum instability prevention type heading device designed by the invention can be any underground construction heading machine, and the common underground construction heading machines comprise a shield machine, a pipe jacking machine, an open type heading machine or a closed chest type heading machine and the like; the machine body cap peak is fixedly arranged at the front end of the machine body of the corresponding underground construction heading machine.
Preferably, the anti-destabilization propulsion unit body is a rigid structure panel or a composite bearing type structure panel, and the composite bearing type structure panel can be a plurality of rigid structure panels or a composite structure inserting plate combined and overlapped by rigidity and flexibility, so that stress concentration of the anti-destabilization propulsion unit body in the stratum propulsion process is avoided; in order to facilitate the high-efficiency propulsion of the instability-preventing propulsion unit body in the stratum, the front ends of the instability-preventing propulsion unit bodies are provided with propulsion blade angles 7.
Preferably, the propulsion power device includes, but is not limited to, a hydraulic power device, a pneumatic power device, an electromagnetic power device, a screw power device, and a rack and pinion power device, and in the structural design of the power device, the instability-preventing propulsion unit body can be advanced/retracted by arranging a hydraulic cylinder or a pneumatic cylinder; the electromagnetic propeller is arranged on the brim of the machine body, and the gas is ejected at high speed to generate thrust by utilizing the interaction force between the current and the magnetic field in the conductive gas, so that the propulsion/retraction of the instability-preventing propulsion unit body is controlled; the driving screw rod can be connected with the instability-preventing propelling unit body to control the propulsion/retraction of the instability-preventing propelling unit body; the anti-destabilization propelling unit body can be arranged on the anti-destabilization propelling unit body by arranging corresponding connecting gears, and the propelling/retracting of the anti-destabilization propelling unit body is controlled by a gear and rack transmission mode.
Preferably, in order to further improve the structural rigidity of the anti-destabilization propulsion unit body and improve the propulsion strength and the service life of the anti-destabilization propulsion unit body, a reinforced structural steel beam 8 is also arranged in the anti-destabilization propulsion unit body, and the reinforced structural steel beams are arranged in the anti-destabilization propulsion unit body in parallel or in a staggered and uniform manner.
Preferably, in order to improve the tunneling application range of the stratum instability prevention type tunneling device, the tunneling requirements of various tunneling tunnel sections are met, for example, the tunneling section is circular, rectangular, quasi-rectangular, horseshoe-shaped and the like; particularly, when turning or turning occurs in the tunneling construction process, in order to ensure that the instability-preventing propulsion unit body completely seals a tunneling section, an auxiliary supporting unit 9 with a jack and a supporting plate is arranged on the instability-preventing propulsion unit body, wherein the supporting plate can be designed into a corresponding arc-shaped structure, so that the tunneling machine can be supported and supported fully when turning or turning.
Preferably, in order to match specific construction conditions, the anti-destabilization propulsion unit bodies are arranged along the tunneling operation section of the tunneling machine in an integrated structure or in a sectional structure, and when the anti-destabilization propulsion unit bodies are arranged in the sectional structure, a matching differential groove structure can be arranged on the corresponding combined end faces, so that stress deformation generated by the contact between the sectional anti-destabilization propulsion unit bodies and the soil layer in the propulsion/retraction process is avoided, and the closed-loop sealing performance of the anti-destabilization propulsion unit bodies is greatly ensured.
Preferably, a distributed propulsion control unit 10 is further arranged on the underground construction heading machine body and used for preventing the integral structure of the instability-preventing propulsion unit body from propelling/retracting; or segmented advancement/retraction of a segmented structure; the propulsion control unit can be provided with an integrated controller on the underground construction tunneling machine body, the integrated controller is connected with a propulsion power device and controls the whole or stepping propulsion/retraction of the propulsion power device; in the process of centralized control, in order to further improve the propelling efficiency of the instability-prevention propelling unit body and avoid the technical defect of limited propelling space, a stroke-increasing type propelling structure can be arranged on a corresponding propelling power device; taking a hydraulic power device as an example in the specific structural design, see fig. 8 and 9; the device comprises a pushing frame 11 which is additionally arranged on a propelling power device, connecting clamping blocks 12 which are arranged on the outer wall of the propelling power device at fixed intervals, a linkage connecting rod 13 which is arranged on the pushing frame, and a linkage stopping block 14 which is matched with the connecting clamping blocks and is arranged at the lower end of a linkage connecting rod; the linkage connecting rod is driven by a pneumatic or hydraulic device, the linkage stop blocks are arranged between adjacent connecting fixture blocks in the stroke increasing process, the pushing stroke of the pushing frame is synchronously increased, and the step-by-step stroke increasing pushing motion process of the propulsion power device is realized.
A construction method of a stratum instability prevention type tunneling device comprises any one of the stratum instability prevention type tunneling devices, and the construction method comprises the following steps:
(1) and excavating a vertical shaft: completing construction of an originating well and a receiving well;
(2) and equipment installation: the front end of a machine body of the underground construction tunneling machine is provided with a machine body cap peak, and the outer end surface of the machine body cap peak is provided with an anti-instability propulsion unit body; the instability-preventing propulsion unit body can be installed in an integral structure or in a segmented structure, and the section shape of the instability-preventing propulsion unit body comprises but is not limited to a circle, a rectangle, a quasi-rectangle and a horseshoe; a propulsion power device is arranged between the instability-preventing propulsion unit body and the machine body brim and is connected with a propulsion control unit;
(3) starting operation: synchronously starting the underground construction tunneling machine and the propulsion power device, and pushing the instability-preventing propulsion unit body to a soil layer in front of the excavation surface by the propulsion power device to form a closed stable layer in the soil body of the excavation surface; when the propelling space of the propelling power device in the starting well is limited, the propelling process can be realized by installing the stroke-increasing type propelling structure;
(4) and tunneling operation: the underground construction heading machine carries out heading/jacking operation construction to the receiving well, and the propulsion power device drives the instability-preventing propulsion unit body to carry out synchronous retraction operation while the underground construction heading machine carries out heading/jacking operation construction, so that the operation synchronization of the underground construction heading machine and the instability-preventing propulsion unit body is kept consistent; keeping the soil body in front of the tunneling/jacking operation of the underground construction tunneling machine in the closed-loop space of the instability-preventing propulsion unit body all the time; in the tunneling process, the stroke-increasing type pushing structure can be arranged and installed, so that the propelling efficiency of the instability-preventing propelling unit body is further improved; the propulsion control unit controls the propulsion/retraction of an integrated structure or the subsection propulsion/retraction of a sectional structure of the instability-preventing propulsion unit body;
(5) And receiving operation: repeating the step (3) and the step (4) until the construction operation interval is completed, and hoisting and recovering the equipment in the receiving well;
(6) and site recovery: and performing top cover construction on the starting well and the receiving well to recover the original appearance of the site.
When the excavation face soil structure layer is good in stability, the instability-preventing propulsion unit body is kept at the position of the outer end face of the machine body cap peak, and the underground construction heading machine normally conducts heading/jacking operation construction.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The above description is only an exemplary embodiment of the present invention, and should not be taken as limiting the scope of the present invention, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a prevent that stratum unstability formula tunnelling device which characterized in that: the tunneling machine comprises an underground construction tunneling machine, wherein a machine body brim is arranged at the front end of a machine body of the underground construction tunneling machine, and the machine body brim is distributed in a closed loop manner along the tunneling operation section of the tunneling machine; a plurality of propelling chutes are arranged on the machine body brim, propelling slide blocks matched with the propelling chutes are arranged in the propelling chutes, anti-destabilization propelling unit bodies are arranged on the propelling slide blocks, and the anti-destabilization propelling unit bodies are also distributed in a closed loop manner along the tunneling operation section of the tunneling machine; the propelling slide block is connected with a propelling power device, and the power source of the propelling power device is provided by the underground construction heading machine.
2. The stratum instability prevention type tunneling device according to claim 1, characterized in that: the underground construction tunneling machine comprises a shield tunneling machine, a pipe jacking machine, an open tunneling machine or a closed chest tunneling machine; the machine body cap peak is fixedly arranged at the front end of the machine body of the corresponding underground construction heading machine.
3. The stratum instability prevention type tunneling device according to claim 1, characterized in that: the anti-destabilization propulsion unit body is a rigid structure panel or a composite bearing type structure panel; the front ends of the instability-preventing propulsion unit bodies are provided with propulsion blade angles.
4. The stratum instability prevention type tunneling device according to claim 1, characterized in that: the propulsion power device comprises but is not limited to a hydraulic power device, a pneumatic power device, an electromagnetic power device, a threaded power device and a rack and pinion power device.
5. A stratum instability prevention tunneling device according to claim 3, characterized in that: and reinforcing structure steel beams are further arranged in the anti-destabilization propulsion unit body and are arranged in the anti-destabilization propulsion unit body in parallel or in a staggered and uniform manner.
6. A stratum instability prevention tunneling device according to claim 3, characterized in that: and an auxiliary supporting unit of a jack and a supporting plate is arranged on the instability-preventing propulsion unit body.
7. The stratum instability prevention type tunneling device according to claim 1, characterized in that: the instability-preventing propulsion unit bodies are arranged along the tunneling operation section of the tunneling machine in an integrated structure or in a sectional structure.
8. The stratum instability prevention type tunneling device according to claim 7, characterized in that: the distributed propulsion control unit is also arranged on the underground construction heading machine body and is used for preventing the integral structure of the instability-preventing propulsion unit body from advancing/retracting; or segmented advancement/retraction of a segmented structure.
9. A construction method of a stratum instability prevention type tunneling device comprises any one of the 1-8, and is characterized by comprising the following steps:
(1) and excavating a vertical shaft: completing construction of an originating well and a receiving well;
(2) and equipment installation: the front end of a machine body of the underground construction tunneling machine is provided with a machine body cap peak, and the outer end surface of the machine body cap peak is provided with an anti-instability propulsion unit body; the instability-preventing propulsion unit body can be installed in an integral structure or in a segmented structure, and the section shape of the instability-preventing propulsion unit body comprises but is not limited to a circle, a rectangle, a quasi-rectangle and a horseshoe; a propulsion power device is arranged between the instability-preventing propulsion unit body and the machine body brim and is connected with a propulsion control unit;
(3) starting operation: synchronously starting the underground construction tunneling machine and the propulsion power device, and pushing the instability-preventing propulsion unit body to a soil layer in front of the excavation surface by the propulsion power device to form a closed stable layer in the soil body of the excavation surface;
(4) and tunneling operation: the underground construction heading machine carries out heading/jacking operation construction to the receiving well, and the propulsion power device drives the instability-preventing propulsion unit body to carry out synchronous retraction operation while the underground construction heading machine carries out heading/jacking operation construction, so that the operation synchronization of the underground construction heading machine and the instability-preventing propulsion unit body is kept consistent; keeping the soil body in front of the tunneling/jacking operation of the underground construction tunneling machine in the closed-loop space of the instability-preventing propulsion unit body all the time; the propulsion control unit controls the propulsion/retraction of an integrated structure or the subsection propulsion/retraction of a sectional structure of the instability-preventing propulsion unit body;
(5) And receiving operation: repeating the step (3) and the step (4) until the construction operation interval is completed, and hoisting and recovering the equipment in the receiving well;
(6) and site recovery: and performing top cover construction on the starting well and the receiving well to recover the original appearance of the site.
10. The construction method of the stratum instability prevention type tunneling device according to claim 9, characterized in that: when the excavation face soil structure layer is good in stability, the instability-preventing propulsion unit body is kept at the position of the outer end face of the machine body cap peak, and the underground construction heading machine normally conducts heading/jacking operation construction.
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| CN202010517866.5A CN111852487A (en) | 2020-06-09 | 2020-06-09 | Stratum instability prevention type tunneling device and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006805A (en) * | 2021-03-19 | 2021-06-22 | 中铁工程装备集团有限公司 | Equipment for mechanically building subway station and construction method thereof |
| CN113266385A (en) * | 2021-07-19 | 2021-08-17 | 北京建工土木工程有限公司 | Large-section rectangular push bench jacking structure with external brim and construction method thereof |
| CN113279776A (en) * | 2021-07-19 | 2021-08-20 | 北京建工土木工程有限公司 | Large-section rectangular jacking pipe inclined blind hole receiving and disassembling method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006805A (en) * | 2021-03-19 | 2021-06-22 | 中铁工程装备集团有限公司 | Equipment for mechanically building subway station and construction method thereof |
| CN113006805B (en) * | 2021-03-19 | 2022-03-22 | 中铁工程装备集团有限公司 | Equipment for mechanically building subway station and construction method thereof |
| CN113266385A (en) * | 2021-07-19 | 2021-08-17 | 北京建工土木工程有限公司 | Large-section rectangular push bench jacking structure with external brim and construction method thereof |
| CN113279776A (en) * | 2021-07-19 | 2021-08-20 | 北京建工土木工程有限公司 | Large-section rectangular jacking pipe inclined blind hole receiving and disassembling method |
| CN113266385B (en) * | 2021-07-19 | 2021-10-26 | 北京建工土木工程有限公司 | Large-section rectangular push bench jacking structure with external brim and construction method thereof |
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