CN113982608A - Split initial construction method for ultra-deep narrow shaft shield - Google Patents
Split initial construction method for ultra-deep narrow shaft shield Download PDFInfo
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- CN113982608A CN113982608A CN202111553246.8A CN202111553246A CN113982608A CN 113982608 A CN113982608 A CN 113982608A CN 202111553246 A CN202111553246 A CN 202111553246A CN 113982608 A CN113982608 A CN 113982608A
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- shield
- shield machine
- trailer
- machine
- shaft
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- 238000010276 construction Methods 0.000 title claims abstract description 27
- 230000005641 tunneling Effects 0.000 claims abstract description 19
- 239000004519 grease Substances 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 239000002002 slurry Substances 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 239000004570 mortar (masonry) Substances 0.000 claims description 5
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000009412 basement excavation Methods 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a split initial construction method for a shield of an ultra-deep narrow shaft, which comprises the following steps: firstly, assembling a shield machine host machine and arranging a rear matching system and a mud pipe inlet and outlet hose in a vertical shaft, arranging a shield machine rear matching trailer in a field around the vertical shaft, then after the shield machine host machine tunnels for a certain distance, modifying one of the rear matching trailers, then putting the modified rear matching trailer into the shaft to be connected with the shield machine host machine, moving the rear matching system and the mud pipe inlet and outlet to the trailer, finally, when the tunneling distance of the shield machine host machine reaches the length of the whole machine, withdrawing the trailer, sequentially installing all the rear matching trailers including the withdrawn trailer, and moving the rear matching system to the corresponding trailer to finish the starting work of the shield machine. The method has the advantages of high space utilization rate, reasonable field and space application, clear overall time sequence and no influence among the working procedures.
Description
Technical Field
The invention relates to the technical field of ultra-deep shaft shield construction, in particular to a split initial construction method of an ultra-deep narrow shaft shield.
Background
In recent years, shield tunnel tunneling construction is increasingly applied to underground spaces, particularly urban subway engineering, hydraulic engineering, urban comprehensive pipe gallery engineering and the like; the shield starting vertical shaft is located in an urban area, and buildings and personnel are dense, so that the area of the vertical shaft is greatly limited, and the shield starting has to adopt a split mode; and the buried depth of the starting vertical shaft is very large because the shield tunnel needs to penetrate through important building structures, rivers and lakes and geological layers with poor geology, so that the split starting difficulty of the shield is increased.
The arrangement and extension of various pipelines, the injection and pipeline extension of various grease pumps, the injection and pipeline extension of shield synchronous grouting slurry and the cross influence among the processes of shield split starting are required to be arranged in a narrow space at the bottom of the vertical shaft, so that the space at the bottom of the vertical shaft can not meet the requirement of shield split starting.
Disclosure of Invention
The invention aims to provide a split initial construction method for a shield of an ultra-deep narrow shaft, which aims to solve the technical problems of low space utilization rate and cross influence among processes in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a split initial construction method for an ultra-deep narrow shaft shield is designed, and comprises the following steps:
(1) assembling a main shield machine and arranging a rear matching system and a mud pipe inlet and outlet hose under a vertical shaft, placing rear matching trailers of the main shield machine in a field around the vertical shaft, wherein the number of the trailers is 5-8, and after completion, the main shield machine starts to tunnel at the working surface of the vertical shaft;
(2) after the shield machine host tunnels for a certain distance, one of the rear matching trailers is modified and a mud pipe extension device is installed, the trailer is lowered into the well to be connected with the shield machine host after the modification is finished, the rear matching system is moved to the trailer after the connection is finished, and a mud pipe inlet and outlet hose is connected with the mud pipe extension device;
(3) and after the tunneling distance of the main machine of the shield machine reaches the length of the whole machine, withdrawing the trailer, sequentially installing all rear matched trailers including the withdrawn trailer, moving the rear matched systems to the corresponding rear matched trailers, completing the whole machine assembly of the shield machine, entering normal tunneling construction and completing the starting work of the shield machine.
Preferably, in the step (1), the rear matching system includes a shield machine main control room, a synchronous grouting pump system, a shield tail grease injection system, and an EP2 grease injection system.
Preferably, in the step (1), the rear matching trailers are connected through pipelines and pipelines, and extra pipelines and pipelines are additionally arranged according to the well depth so as to meet the connection requirement of the host machine of the shield machine assembled under the vertical shaft.
The pipelines and pipelines comprise water pipes, mud pipes, hydraulic oil pipes, internal circulation pipes and cables.
Preferably, in the step (1), the rear mating trailer is arranged on two sides of the shaft in a U shape.
Preferably, 3 steel structure platforms are respectively welded on the left side and the right side of an initial line of the shield tunneling machine, a P2.1 slurry pump, a synchronous grouting mortar tank and a mortar tank are arranged on the first layer of the platform on the right side of the line, shield tail grease and an EP2 grease extension pipeline are arranged on the second layer, a shield tail grease pump and an EP2 grease pump are arranged on the third layer, a main engine room is arranged on the first layer of the platform on the left side of the line, and various extension cables are arranged on the third layer.
Preferably, the first layer of the steel structure platform is 1.5-2.0 m higher than the bottom of the well, the layer height is 3m, the stand column of the steel structure platform is 56a I-steel, and the platform surface of each layer is a steel plate with the thickness of 1-3 cm.
Preferably, a booster pump connected with the hydraulic pipeline is arranged on the right side platform to meet the pressure requirements of various hydraulic pipelines.
Preferably, in the step (2), the distance is more than or equal to 14.4m and is a distance which can only accommodate the installation of the modified trailer.
Preferably, in the step (3), the tunneling distance is larger than or equal to 108m and is a distance capable of accommodating and installing all the rear matched trailers.
Compared with the prior art, the invention has the main beneficial technical effects that:
1. the rear matched trailer of the shield machine is arranged around the vertical shaft, so that the underground space is saved, and the steel structure platforms are arranged at two sides of the tunneling line, so that the underground space is utilized to a great extent, and the shield machine starting work in the ultra-deep narrow vertical shaft can be smoothly completed.
2. According to the invention, one of the rear matching trailers is improved and then is put into the well, the rear matching system is completely transferred to the rear matching trailer, after the tunneling distance reaches the length of the whole machine, the modified trailer is temporarily withdrawn, all the rear matching trailers including the withdrawn modified trailer are sequentially installed, and finally the rear matching system is transferred to the corresponding trailer so as to complete the initial work of the shield tunneling machine.
Drawings
Fig. 1 is a schematic layout diagram of a trailer mounted behind a shield tunneling machine according to an embodiment of the present invention.
FIG. 2 is a schematic representation of a downhole arrangement according to an embodiment of the invention.
In each of the above figures, 1 is trailer No. 1, 2 is trailer No. 2, 3 is trailer No. 3, 4 is trailer No. 4, 5 is trailer No. 5, 6 is trailer No. 6, 7 is the well that starts, 8 is the play thick liquid pipe, 9 is the thick liquid pipe that advances, 10 is the cable conductor, 11 is the shield structure host computer, 12 is left side structure platform, 13 is right side structure platform, 14 is the shield structure host computer room, 15 is the P2.1 pump, 16 is portable reaction frame, 17 is the mud hose.
Detailed Description
The following examples are intended to illustrate the present invention in detail and should not be construed as limiting the scope of the present invention in any way.
In the description of the technical solutions of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the present invention. Reference herein to "first," "second," etc., is used to distinguish between similar items and not to limit the particular order or sequence.
The unit structures and systems in the following examples are all conventional commercial products unless otherwise specified.
Example 1: a split initial construction method of a shield of an ultra-deep narrow shaft is disclosed, and referring to fig. 1 and 2, 1 shield machine with the excavation diameter of 8.64m is used, the outer diameter of a lining segment in a shield region is 8.3m, the inner diameter is 7.5m, the ring width is 1.6m, and the thickness is 0.4 m; each ring consists of 7 pipe pieces, wherein 4 standard blocks, 2 connecting blocks and 1F block are arranged; the lining ring adopts a universal ring, the double-faced wedge amount is 46mm, and the number of the trailer matched with the rear part of the main machine of the shield machine is 6. The split starting construction method comprises the following steps:
(1) first stage of shield machine
Underground field arrangement
The method comprises the steps of hoisting 1-6 trailers matched with a shield machine main engine behind to the periphery of a vertical shaft in a U-shaped arrangement mode according to planning, sequentially assembling 1-6 trailers and connecting the trailers, connecting a slurry inlet pipeline, a slurry outlet pipeline, a circulating water pipeline, a hydraulic oil pipeline, an internal circulating pipeline and a cable in place, fixing the trailers through hoops welded with embedded steel plates in a lining wall of the vertical shaft, and additionally arranging additional lines according to the depth of the vertical shaft to achieve connection of the vertical shaft and the underground shaft.
② underground field arrangement
The length of a main machine of the shield machine is 11m, the shield machine is assembled in place in a blocking mode on an underground excavation line, a movable reaction frame is adopted at the rear part of the shield machine for improving the space utilization rate, 3 layers of steel structure platforms are welded on the left side and the right side of the excavation line respectively, the first layer of the platform is 1.8m higher than the bottom surface of a well, and the layer height is 3 m. The steel structure platform upright column adopts 56a I-steel, and the platform surface adopts a steel plate with the thickness of 2 cm; a synchronous grouting mortar tank and a grouting pump are arranged on the first layer of the left platform, various grease pipes and hydraulic cylinders are arranged on the second layer, and a shield grease pump and an EP2 grease pump are arranged on the third layer; 3 layers of the right platform are all provided with discoid cables, and the first layer is provided with partial communication lines; the P2.1 slurry outlet pump is arranged at the right front part and is connected with a slurry inlet and outlet pipe on the main machine of the shield machine through 2 hoses with the length of 18m, and the hoses are arranged at the rear part of the main machine of the shield machine in a bent shape and gradually extend along with the tunneling of the main machine of the shield machine; a booster pump is additionally arranged on the right platform and is connected with a hydraulic oil pipe so as to meet the pressure requirement of a hydraulic pipeline; the main engine room is arranged behind the left side of the line and used for controlling the shield tunneling machine to tunnel forwards.
In the step, the starting working well is a vertical well constructed at a construction starting position selected on a tunnel construction route, only one vertical well capable of accommodating a main machine of the shield machine can be constructed due to the limitation of construction cost and construction area, after the vertical well is constructed, the main machine of the shield machine and a rear matching system are put down into the starting working well through hoisting equipment, and a concrete seat and a movable counterforce frame for placing the main machine are arranged in the starting working well, so that the main machine can be driven forwards on a working face in the starting working well.
(2) Second stage of shield machine initiation
And after the shield machine host digs 14.4m, transforming a No. 5 trailer and installing a slurry pipe extension device, after the transformation is finished, placing the No. 5 trailer into the well to be connected with the shield machine host, after the connection is finished, moving the shield machine main control room, the synchronous grouting pump system, the shield tail grease injection system and the EP2 grease injection system to the No. 5 trailer, and connecting a slurry inlet and outlet pipe hose with the slurry pipe extension device so as to achieve the purpose of extending the slurry inlet and outlet pipe.
(3) Third stage of shield tunneling machine initiation
After the tunneling distance of the main machine of the shield machine reaches the length of the whole machine, the main machine temporarily exits from the No. 5 trailer to facilitate the placement of other trailers, after exiting from the No. 5 trailer, the No. 5 trailer is placed between other trailers and sequentially installed together with the No. 5 trailer, the No. 1 to No. 6 trailer which is matched with the trailer is arranged behind, the matched system is moved to the corresponding trailer, the whole machine of the shield machine is assembled, normal tunneling construction is carried out, and the starting work of the shield machine is completed.
While the invention has been described in detail with reference to the drawings and examples, it will be understood by those skilled in the art that various changes in the form and details of the embodiments may be made without departing from the spirit and scope of the invention, and that various changes in the form and details of the related devices and method steps may be substituted for those shown and described without departing from the spirit and scope of the invention.
Claims (10)
1. A split initial construction method for an ultra-deep narrow shaft shield is characterized by comprising the following steps:
(1) assembling a main shield machine and arranging a rear matching system and a mud pipe inlet and outlet hose under a vertical shaft, placing rear matching trailers of the main shield machine in a field around the vertical shaft, wherein the number of the trailers is 5-8, and after completion, the main shield machine starts to tunnel at the working surface of the vertical shaft;
(2) after the shield machine host tunnels for a certain distance, one of the rear matching trailers is modified, a mud pipe extending device is installed, the trailer is lowered into the well to be connected with the shield machine host after the modification is finished, the rear matching system is moved to the trailer after the connection is finished, and a mud pipe inlet and outlet hose is connected with the mud pipe extending device;
(3) and after the tunneling distance of the main machine of the shield machine reaches the length of the whole machine, withdrawing the trailer, sequentially installing all rear matched trailers including the withdrawn trailer, moving the rear matched systems to the corresponding rear matched trailers, completing the whole machine assembly of the shield machine, entering normal tunneling construction and completing the starting work of the shield machine.
2. The split starting construction method of the shield of the ultra-deep narrow shaft according to claim 1, wherein in the step (1), the rear mating system comprises a shield machine main control room, a synchronous grouting pump system, a shield tail grease injection system and an EP2 grease injection system.
3. The split starting construction method of the ultra-deep narrow shaft shield according to claim 1, wherein in the step (1), the trailers which are matched with each other at the back are connected through pipelines and pipelines, and extra pipelines and pipelines are additionally arranged according to the depth of the shaft so as to meet the connection requirement of a shield machine host which is assembled under the shaft.
4. The split starting construction method for the shield of the ultra-deep narrow shaft well according to claim 3, wherein the pipelines and pipelines comprise a water pipe, a mud pipe, a hydraulic oil pipe, an internal circulation pipe and a cable.
5. The split starting construction method of the ultra-deep narrow shaft shield according to claim 1, wherein in the step (1), the rear mating trailers are arranged on two sides of the shaft in a U shape.
6. The split starting construction method of the shield machine of the ultra-deep narrow shaft according to claim 1, characterized in that a multi-layer structure platform is respectively arranged at the left side and the right side of a starting line of the shield machine, wherein a corresponding P2.1 slurry pump, a synchronous grouting mortar tank and a mortar tank are arranged at the first layer of the right/left side platform of the line, a corresponding shield tail grease and EP2 grease extension pipeline are arranged at the second layer, a corresponding shield tail grease pump and EP2 grease pump are arranged at the third layer, a corresponding main machine room is arranged at the first layer of the left/right side structure platform of the line, and various extension cables are arranged at the second layer and the third layer.
7. The split starting construction method for the shield of the ultra-deep narrow vertical shaft according to claim 6, wherein the first layer of the structural platform is 1.5-2.0 m higher than the bottom surface of the shaft and 3m higher than the bottom surface of the shaft, the upright column of the structural platform is 56a I-steel, and the platform surface of each layer is a steel plate with the thickness of 1-3 cm.
8. The split starting construction method of the ultra-deep narrow shaft shield according to claim 6, characterized in that a booster pump communicated with hydraulic pipelines is arranged on the right/left side structural platform to meet the pressure requirements of various hydraulic pipelines.
9. The split starting construction method of the shield machine of the ultra-deep narrow shaft according to claim 1, characterized in that in the step (2), the tunneling distance of the main machine of the shield machine is more than or equal to 14.4m and is a distance which can only accommodate the installation of the modified trailer.
10. The split starting construction method of the ultra-deep narrow shaft shield according to claim 1, wherein in the step (3), the tunneling distance is not less than 108m, and is a distance capable of accommodating and installing all the rear mating trailers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111553246.8A CN113982608B (en) | 2021-12-17 | 2021-12-17 | Shield split initiation construction method for ultra-deep narrow vertical shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111553246.8A CN113982608B (en) | 2021-12-17 | 2021-12-17 | Shield split initiation construction method for ultra-deep narrow vertical shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113982608A true CN113982608A (en) | 2022-01-28 |
| CN113982608B CN113982608B (en) | 2024-01-05 |
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| CN202111553246.8A Active CN113982608B (en) | 2021-12-17 | 2021-12-17 | Shield split initiation construction method for ultra-deep narrow vertical shaft |
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| CN113982608B (en) | 2024-01-05 |
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