CN110500107B - Shield tunneling machine normal-pressure warehouse opening front maintenance tool changing construction method - Google Patents
Shield tunneling machine normal-pressure warehouse opening front maintenance tool changing construction method Download PDFInfo
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- CN110500107B CN110500107B CN201910756984.9A CN201910756984A CN110500107B CN 110500107 B CN110500107 B CN 110500107B CN 201910756984 A CN201910756984 A CN 201910756984A CN 110500107 B CN110500107 B CN 110500107B
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- 238000010276 construction Methods 0.000 title claims abstract description 77
- 230000005641 tunneling Effects 0.000 title claims abstract description 42
- 238000012423 maintenance Methods 0.000 title claims abstract description 18
- 238000005422 blasting Methods 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 25
- 230000003068 static effect Effects 0.000 claims abstract description 17
- 238000005299 abrasion Methods 0.000 claims abstract description 16
- 239000002689 soil Substances 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 239000004575 stone Substances 0.000 claims description 9
- 230000008439 repair process Effects 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000011435 rock Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000006872 improvement Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
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- 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 relates to a normal-pressure open-warehouse front-side maintenance tool changing construction method of a shield tunneling machine, which comprises the following steps: the method comprises the steps of checking the condition before opening the shield, checking the abrasion of a cutter head → determining the static blasting range → static blasting construction → repairing the cutter head → recovering and tunneling the shield.
Description
Technical Field
The invention relates to the technical field of civil engineering underground excavation tunnel shield construction, in particular to a shield machine warehouse opening front overhaul tool changing construction method.
Background
With the intensive development of urban construction, the people stream density is continuously increased, and a large amount of urban rail transit transportation systems are urgently needed to be constructed to solve the problem of urban traffic congestion. The shield construction method has the advantages of no influence of ground traffic, high safety, short construction period and the like, so that the shield construction method becomes a main construction method for urban rail traffic construction. The shield tunneling machine cutter head is generally customized according to a geological survey report before the shield tunneling construction, but due to the influences of stratum uncertainty, a geological survey report survey hole site arrangement mode and the like, the detailed condition that a tunnel penetrates through a stratum cannot be accurately grasped, various problems often occur to the shield tunneling machine cutter head in the tunneling process, so that the shield tunneling machine cannot normally tunnel, particularly in a full-face rock stratum, the condition that the cutter head is seriously abraded or blocked in the shield tunneling process is easy to occur, and the shield tunneling machine cutter head needs to be repaired at this time to ensure the normal tunneling of the shield.
Aiming at the problem, the current common solution is ground warehouse opening and removal, namely, a vertical shaft is constructed from the ground to the position of a cutter head, and then a constructor directly goes down to the position of the cutter head to overhaul or replace the shield cutter head. However, the method has large investment and long construction period, the construction of the vertical shaft destroys the stability of an undisturbed soil layer in front of the shield, the earth backfill and the main structure are required to be broken when the shield is pushed again, the construction quality cannot be guaranteed, the construction process is complex on the whole, and the economical efficiency is poor; meanwhile, when the building is positioned at the positions with more people flow, complicated building and construction and the like, projects such as fencing, sign removal, moving and modification and the like need to be carried out, the surrounding environment and traffic are greatly influenced, various approval procedures are complicated, and the total time is difficult to control.
In summary, the method for processing the failure of the cutter head of the shield tunneling machine in the shield tunneling process at present comprises the following steps: on one hand, the construction cost is high, and the construction period is long; on the other hand, when the earth surface environment is complex, the influence on the surrounding environment and traffic is great, the early approval procedure time is long, and the total construction time is difficult to control.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a normal-pressure open-cabin front-side maintenance tool-changing construction method of a shield tunneling machine, which comprises the following steps:
the method comprises the following steps: checking and accepting conditions before opening of shield
The method comprises the steps of perfecting field construction conditions, construction machines and safety technical data, checking whether preparation work before shield opening is perfected, and performing shield opening operation after checking;
step two: shield opening and cutter head abrasion inspection
Performing shield opening construction according to a construction scheme, then checking the abrasion and damage conditions of a cutter head of the shield tunneling machine, recording the specific positions of the abrasion and damage of the cutter head, and marking;
step three: determining static blasting scope
According to the abrasion and damage conditions of the cutter head, the position and the size of an operation space required to be provided for cutter head maintenance are researched and determined;
step four: static blasting construction
A static blasting construction scheme is formulated according to the position and the size of the operation space, the operation space is handed over to blasting operators after the operation space is checked and approved, and the operation space blasting operation is carried out strictly according to the blasting parameters and the blasting sequence of the special scheme until the operation space is formed;
step five: cutter head repair
Compiling a cutter head repairing scheme according to the abrasion and damage conditions of the cutter head, and then entering an operation space from the clearance of the cutter head by a professional to carry out cutter head repairing operation;
step six: shield recovery tunneling
After the cutter head is repaired, cleaning construction machines in the soil bin, recovering the shield tunneling construction after the cutter head is prepared and no error is confirmed, slowly tunneling at low rotating speed within the depth range of the operating space during tunneling, and then performing the shield tunneling construction according to normal propelling parameters.
As an improvement, the center of the working space in the third step is coincident with or above the central line of the tunnel, the length and width of the working space are not less than 3m, and the depth of the working space in the direction vertical to the tunnel face of the tunnel is not less than 2 m.
As an improvement, the static blasting in the fourth step is constructed by using an SCA crushing agent, and the single blasting depth is not more than 1 m.
As an improvement, the blasting sequence in the fourth step is carried out from top to bottom and from shallow to deep, before construction, the working space is firstly divided into a plurality of parts, then a pneumatic pick is adopted to chisel the upper left corner part of the working space to form a blasting construction free face, and finally blasting construction is carried out on the rest part of the working space.
As an improvement, in the blasting drilling in the fourth step, a water drill penetrates through a gap of a cutter head of the shield tunneling machine to construct a blast hole in the direction of a tunnel face, after static blasting is completed, a pneumatic pick is used for cleaning broken rock bodies into a soil bin, and produced broken stones are conveyed out of the soil bin in a mode of manually lifting and conveying large broken stones and discharging small broken stone screws.
And as an improvement, when the cutter head in the step five is repaired, an operator repairs the cutter head in the operation space, and in the process of maintenance and cleaning, the cutter head of the shield machine is overhauled and cleaned in all directions by rotating the cutter head of the shield machine.
The invention has the beneficial effects that:
1. compared with the method of opening the cabin from the ground to break and repair the cutterhead, the method has the advantages that the construction process is simple, a large amount of construction investment and construction time can be saved, meanwhile, the method is mainly used for constructing in the earth cabin of the shield tunneling machine, and the method has no influence on surface buildings, traffic organizations and the like.
2. The construction efficiency is high, the investment of personnel, equipment and the like is relatively less, enough space can be provided for cutter maintenance, and the cutter maintenance quality is guaranteed.
3. All construction operations are carried out in the underground tunnel, so that the method has no pollution problem and good environmental protection effect.
Drawings
FIG. 1 is a schematic diagram of the overall construction process of the normal-pressure open-cabin front-side maintenance tool-changing construction method of the shield tunneling machine.
FIG. 2 is a schematic diagram of a cross section of a relative position between an operation space and a shield machine in the normal-pressure open-cabin front-side maintenance tool-changing construction method of the shield machine.
Fig. 3 is a schematic diagram of a vertical face of a relative position between an operation space and a shield machine in the normal-pressure open-cabin front-side maintenance tool-changing construction method of the shield machine.
FIG. 4 is a schematic diagram of the operation space division and the construction sequence of the normal-pressure open-cabin front-side maintenance tool-changing construction method of the shield tunneling machine
As shown in the figure: 1. a shield machine; 2. a working space; 3. a central axis of the tunnel; 4. a tunnel face; 5. blasting sequence; 6. and (5) partitioning lines.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a normal-pressure open-cabin front-side maintenance tool-changing construction method for a shield tunneling machine comprises the following steps:
the method comprises the following steps: checking and accepting conditions before opening of shield
The method comprises the steps of perfecting on-site construction conditions, construction machines and safety technical data, and verifying whether the preparation work before shield opening is perfected by units such as supervision, owners or the like together with external experts, wherein the shield opening operation can be performed after the verification;
step two: shield opening and cutter head abrasion inspection
Performing shield opening construction according to a construction scheme, then checking the abrasion and damage conditions of a cutter head of the shield tunneling machine 1, recording the specific positions of the abrasion and damage of the cutter head, and marking;
step three: determining static blasting scope
According to the abrasion and damage conditions of the cutter head, the position and the size of an operation space 2 required to be provided for cutter head maintenance are researched and determined;
step four: static blasting construction
A static blasting construction scheme is formulated according to the position and the size of the operation space 2, the operation space 2 is handed over to blasting operators after the operation space 2 is checked and approved, and blasting operation of the operation space 2 is strictly carried out according to special scheme blasting parameters and sequences until the operation space 2 is formed;
step five: cutter head repair
Compiling a cutter head repairing scheme according to the abrasion and damage conditions of the cutter head, and then entering an operation space 2 from the clearance of the cutter head by a professional to carry out cutter head repairing operation;
step six: shield recovery tunneling
After the cutter head is repaired, cleaning construction machines in the soil bin, recovering shield tunneling construction after preparation and no error is confirmed, slowly tunneling at low rotating speed within the depth range of the operation space 2 during tunneling, and then performing shield tunneling construction according to normal propelling parameters;
as shown in fig. 2 and 3, the center of the working space 2 in the third step coincides with the tunnel center line 3 or is located above the tunnel center line 3, the length and width of the working space 2 are not less than 3m, and the depth of the working space 2 in the direction perpendicular to the tunnel face 4 is not less than 2 m.
As shown in figure 1, the static blasting in the fourth step is carried out by using an SCA crushing agent, and the single blasting depth is not more than 1 m.
As shown in fig. 4, the blasting sequence 5 in the fourth step is performed in the order from top to bottom and from shallow to deep, before construction, the working space 2 is firstly divided into a plurality of parts (wherein the dotted line 6 is a partition line), then a pneumatic pick is used for chiseling a blasting construction free face at the upper left corner of the working space 2, and finally blasting construction is performed on the rest of the working space 2, so that the free face formed at the earlier construction part is fully utilized during blasting construction, and the blasting effect is enhanced.
As shown in fig. 1, in the blasting drilling in the fourth step, a water drill is adopted to pass through a gap of a cutter head of the shield tunneling machine 1 and construct a blast hole in the direction of a tunnel face 4, after static blasting is completed, a pneumatic pick is used for cleaning broken rock masses into a soil bin, and produced broken stones are conveyed out of the soil bin in a mode of manually lifting and conveying large broken stones and discharging small broken stone augers.
As shown in fig. 1, when repairing the cutter head in the fifth step, the operator performs cutter head repair in the working space 2, and in the process of maintenance and cleaning, the cutter head of the shield machine 1 is overhauled and cleaned in all directions by rotating the cutter head of the shield machine 1.
The above examples are given for the purpose of illustrating the invention clearly and not for the purpose of limiting the same, and it will be apparent to those skilled in the art that, in light of the foregoing description, numerous modifications and variations can be made in the form and details of the embodiments of the invention described herein, and it is not intended to be exhaustive or to limit the invention to the precise forms disclosed.
Claims (4)
1. A shield tunneling machine normal-pressure open-cabin front-side maintenance tool changing construction method is characterized by comprising the following steps:
the method comprises the following steps: checking and accepting conditions before opening of shield
The method comprises the steps of perfecting field construction conditions, construction machines and safety technical data, checking whether preparation work before shield opening is perfected, and performing shield opening operation after checking;
step two: shield opening and cutter head abrasion inspection
Performing shield opening construction according to a construction scheme, then checking the abrasion and damage conditions of a cutter head of the shield machine (1), recording the specific positions of the abrasion and damage of the cutter head, and marking;
step three: determining static blasting scope
According to the abrasion and damage conditions of the cutter head, the position and the size of an operation space (2) required to be provided for cutter head maintenance are researched and determined; the center of the working space (2) is superposed with the tunnel center line (3) or is positioned above the tunnel center line (3), the length and the width of the working space (2) are not less than 3m, and the depth of the working space (2) in the direction vertical to the tunnel face (4) is not less than 2 m;
step four: static blasting construction
A static blasting construction scheme is formulated according to the position and the size of the operation space (2), the operation space (2) is handed over to blasting operators after the operation space (2) is checked and approved, and blasting operation is carried out on the operation space (2) strictly according to special scheme blasting parameters and a blasting sequence until the operation space (2) is formed; the blasting sequence (5) is integrally carried out from top to bottom and from shallow to deep, before construction, the operation space (2) is firstly divided into a plurality of parts, then a pneumatic pick is adopted to chisel a blasting construction face in the upper left corner of the operation space (2), and finally blasting construction is carried out on the rest part of the operation space (2);
step five: cutter head repair
A cutter head repairing scheme is compiled according to the abrasion and damage conditions of the cutter head, and then a professional enters an operation space (2) from the clearance of the cutter head to perform cutter head repairing operation;
step six: shield recovery tunneling
After the cutter head is repaired, cleaning construction machines in the soil bin, recovering the shield tunneling construction after the cutter head is prepared and no error is confirmed, slowly tunneling at low rotating speed within the depth range of the operation space (2) during tunneling, and then performing the shield tunneling construction according to normal propelling parameters.
2. The normal-pressure open-cabin front-side overhaul tool-changing construction method of the shield tunneling machine according to claim 1, and is characterized in that: and in the fourth step, the static blasting is carried out by using an SCA crushing agent, and the single blasting depth is not more than 1 m.
3. The normal-pressure open-cabin front-side overhaul tool-changing construction method of the shield tunneling machine according to claim 1, and is characterized in that: and blasting drilling in the fourth step adopts a water drill to penetrate through a construction blast hole in the direction of the tunnel face (4) from the space of a cutter head of the shield machine (1), a pneumatic pick is used for cleaning broken rock bodies into a soil bin after static blasting is finished, and produced broken stones are conveyed out of the soil bin in a mode of manually lifting and conveying large broken stones and discharging small broken stone screw machines.
4. The normal-pressure open-cabin front-side overhaul tool-changing construction method of the shield tunneling machine according to claim 1, and is characterized in that: and when the cutter head in the step five is repaired, an operator repairs the cutter head in the operation space (2), and in the process of maintenance and cleaning, the cutter head of the shield machine (1) is overhauled and cleaned in all directions by rotating the cutter head of the shield machine (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910756984.9A CN110500107B (en) | 2019-08-16 | 2019-08-16 | Shield tunneling machine normal-pressure warehouse opening front maintenance tool changing construction method |
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| CN201910756984.9A CN110500107B (en) | 2019-08-16 | 2019-08-16 | Shield tunneling machine normal-pressure warehouse opening front maintenance tool changing construction method |
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| CN110500107B true CN110500107B (en) | 2021-03-02 |
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| CN110847921A (en) * | 2019-12-05 | 2020-02-28 | 华北水利水电大学 | Method for getting rid of trouble after shield machine is clamped |
| CN113216994B (en) * | 2021-05-06 | 2022-07-26 | 中建铁投轨道交通建设有限公司 | Construction method for correcting deviation by overexcavation of inserted hob of shield tunneling machine |
| CN115218735B (en) * | 2022-07-26 | 2023-06-16 | 广东***工程有限公司 | Method for solving problem of getting stuck due to eccentric wear of cutter |
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| CN100564802C (en) * | 2006-11-27 | 2009-12-02 | 杨仁树 | The method of crushing rock formation in the colliery |
| US9429016B2 (en) * | 2009-12-22 | 2016-08-30 | Bouygues Travaux Publics | Method for replacing a tunnel boring machine roller cutter, handling device and roller cutter suited to such a method |
| CN103061776B (en) * | 2013-01-06 | 2015-05-27 | 中铁隧道集团有限公司 | Method for repairing TBM (tunnel boring machine) cutter head in intra-tunnel high-pressure environment |
| CN103133007B (en) * | 2013-03-01 | 2015-05-13 | 中铁三局集团有限公司 | Shield ground compartment opening method |
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Effective date of registration: 20200615 Address after: Room 905, 1st floor, building 3, No. 10, guaxiang Road, Panggezhuang Town, Daxing District, Beijing 100089 Applicant after: China Construction Third Engineering Bureau Urban Construction Co.,Ltd. Applicant after: CHINA STATE RAILWAY INVESTMENT CONSTRUCTION GROUP Co.,Ltd. Address before: 102601 room 905, 3 building, 10 Gua Xiang Road, Pang Zhuang Town, Daxing District, Beijing. Applicant before: CHINA STATE RAILWAY INVESTMENT CONSTRUCTION GROUP Co.,Ltd. |
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