CN112502723B - Single-shield TBM blocking machine escaping construction method - Google Patents
Single-shield TBM blocking machine escaping construction method Download PDFInfo
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- CN112502723B CN112502723B CN202011412948.XA CN202011412948A CN112502723B CN 112502723 B CN112502723 B CN 112502723B CN 202011412948 A CN202011412948 A CN 202011412948A CN 112502723 B CN112502723 B CN 112502723B
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- shield
- cutterhead
- tbm
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- grouting
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- 238000010276 construction Methods 0.000 title claims abstract description 22
- 230000000903 blocking effect Effects 0.000 title claims abstract description 6
- 239000011435 rock Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000005553 drilling Methods 0.000 claims abstract description 13
- 239000002893 slag Substances 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000009412 basement excavation Methods 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 18
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 239000011440 grout Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 230000005641 tunneling Effects 0.000 claims description 6
- 238000007596 consolidation process Methods 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
-
- 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
- E21D11/14—Lining predominantly with metal
-
- 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/025—Grouting with organic components, e.g. resin
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
A single shield TBM blocking machine escaping construction method relates to escaping construction methods. The TBM is invented mainly for solving the problems of complex and large workload of the existing TBM escaping method. The method comprises the following steps: grouting a hollow anchor pipe behind the shield, and solidifying surrounding rocks in an operation area; performing expanding excavation arch changing support of a working area of the pipe shed drilling machine; applying a forepoling shed to the front collapse influence area of the tunnel face; digging pilot holes on two sides of the shield; manually cleaning accumulated slag in the collapse area in front of the cutterhead through guide holes on two sides in the cutterhead; the collapse slag body in front of the cutterhead is cleaned until the cutterhead can normally rotate, and the TBM can solve the problem. The TBM escaping device has the advantages that the TBM escaping operation is safe, the blocked TBM can be escaping in extremely short time, and the cost and time are saved.
Description
Technical field:
the invention relates to a escaping construction method, in particular to a single shield TBM card machine escaping construction method.
The background technology is as follows:
currently, in the construction process of a large-length tunnel, TBM is widely adopted for excavation for the purposes of high efficiency, environmental protection and safety. However, due to geological effects, when tunneling construction passes through poor geological sections, TBM is often stuck due to extremely weak fracture of surrounding rock. After some TBM card machine accidents happen, the TBM is forced to be abandoned for redirection treatment due to failure of TBM escaping, so that great loss is caused.
The invention patent named as a machine-blocking escaping method during tunnel boring machine construction is disclosed in CN 105781562A; the escaping method is as follows: 1. the tunnel boring machine cutterhead is arranged to be composed of a central circular panel and side panels welded along the outer edge of the central circular panel; 2. the shield of the tunnel boring machine adopts an inner layer structure and an outer layer structure which are arranged along the radial direction, and the inner layer shield and the outer layer shield are connected by bolts; the inner layer shield is connected with a needle beam of the tunnel boring machine through a hydraulic telescopic oil cylinder; 3. when the cutter head of the tunnel boring machine is clamped, the cutter head discards the side face plate to detach the outer layer shield, the inner layer shield is retracted through the hydraulic telescopic oil cylinder, the trailer is used for pulling out the whole machine of the tunnel boring machine from the tunnel, the new side face plate is transported into the tunnel, the whole machine is transported into the tunnel again, welding of the cutter head, connection and installation of the inner layer shield and the outer layer shield are completed in the tunnel, and the tunneling can be carried out again. Although the method can be used for performing the escaping treatment on the tunnel boring machine of the blocking machine, the method is complex and inconvenient, and meanwhile, after the tunnel boring machine is escaping, the side panel and the outer shield of the cutterhead are abandoned, so that great loss is caused.
An invention patent named as a TBM tunnel Shi Gongka machine escaping method is disclosed in CN 106522963A; the escaping method is as follows: 1. manually excavating a longitudinal pilot tunnel behind the shield, and excavating a pipe shed working room beyond the collapse influence area; 2. applying a leading pipe shed in a reverse collapse influence area in front of the cutterhead; 3. manually excavating a front collapse influence area of the cutterhead; 4. manually excavating a cutter disc and a shield top collapse area through a longitudinal small pilot tunnel; 5. after the cleaning of the collapsed slag body around the cutterhead and the shield is finished, the TBM can be relieved and tunneling can be carried out again. Although the method is simpler and better in effect than the previous escape method, the method is large in workload, the construction is performed from the collapse area to the front of the cutterhead, the danger coefficient is increased, the construction is performed in front of the cutterhead, the construction is inconvenient, and the construction difficulty is increased.
The invention comprises the following steps:
the invention aims to solve the technical problem of providing a single-shield TBM blocking machine escaping construction method which has few construction steps and can rapidly and conveniently escaping TBM.
The invention is realized by the technical scheme, and discloses a single-shield TBM card machine escaping construction method which is characterized by comprising the following steps:
1. grouting a hollow anchor pipe behind the shield, and solidifying surrounding rocks in an operation area;
2. performing expanding excavation arch changing support of a working area of the pipe shed drilling machine;
3. applying a forepoling shed to the front collapse influence area of the tunnel face;
4. digging pilot holes on two sides of the shield;
5. manually cleaning accumulated slag in the collapse area in front of the cutterhead through guide holes on two sides in the cutterhead;
6. the collapse slag body in front of the cutterhead is cleaned until the cutterhead can normally rotate, and the TBM can solve the problem.
In the step 1, the specific operation is as follows: the first hollow anchor pipe and grouting are applied from the surrounding rock at the tail part of the shield, which is close to the shield, in the range of 1m wide and 6m deep, the reinforcing grouting material is a double-liquid resin grouting material, and a radial grout stopping wall is manufactured; the range of the area which is enlarged and dug behind the shield is applied with a second hollow anchor pipe with the interval of 0.4m, the row spacing of 0.8m and the length of 1.5m, grouting is carried out, the reinforcing grouting material is a double-liquid resin grouting material, and a circumferential grout stopping wall is manufactured; and finally, a third hollow anchor pipe is applied in the range of 1-5 m of the expanded digging area, grouting is carried out in the circumferential consolidation range, and the reinforcing grouting material is cement-based flow variable-speed solidification material and is used for stabilizing surrounding rock in the working area of a pipe shed drilling machine.
In the step 2, the specific operation is as follows: under the protection of the surrounding rock and the original pre-dismantling steel arch frame part fixed at the tail part of the shield, the working area of the pipe shed drilling machine is transversely and gradually expanded and excavated, the closely arranged large steel arch frame support is made, the large steel arch frame and the original pre-dismantling steel arch frame part are reinforced through corresponding connection section steel, meanwhile, anchor rods are made to lock and fix the large steel arch frame, the locking anchor rods are grouting, and the working area of the pipe shed drilling machine is sequentially expanded and excavated in the opposite direction of the TBM.
In the step 3, the specific operation is as follows: and (3) utilizing a pipe shed working area to make an advanced pipe shed towards the collapse area in the tunneling direction of the TBM, grouting to strengthen surrounding rock, and enabling the advanced pipe shed to pass through the collapse influence area for 15-30 m, wherein the advanced pipe shed is arranged at an interval of 30cm at the tail part of the shield at 120 degrees. Meanwhile, an advanced hollow anchor pipe forming 15-60 degrees with the shield is arranged at the tail part of the shield, the broken zone of the surrounding rock collapse influence area is solidified, and grouting, reinforcing and backfilling treatment is carried out on the collapse cavity.
In the step 4, the specific operation is as follows: and excavating a longitudinal left pilot tunnel towards the front of the cutterhead on one side of the left shield by 1m upwards from the shield tail surrounding rock, synchronously constructing a steel arch frame support of the closely arranged pilot tunnels, excavating a longitudinal right pilot tunnel towards the front of the cutterhead on one side of the right shield, and synchronously constructing a steel arch frame support of the closely arranged pilot tunnels. The fourth step can be synchronously carried out with the step 1, the step 2 and the step 3 so as to save the construction time.
In the step 5, the specific operation is as follows: the accumulated slag in front of the cutterhead is manually cleaned through the excavated left pilot tunnel and right pilot tunnel, and meanwhile the accumulated slag in front of the cutterhead is manually cleaned in the cutterhead. Until the cutterhead can rotate normally after cleaning, the TBM can solve the problem.
The invention has the advantages that: due to the adoption of the technical scheme, the method has the advantages of rapidness, convenience, high safety and few construction steps, and the TBM machine can be removed from the system by adopting the method, so that the operation is safe, the blocked TBM machine can be removed in a very short time, and the cost and time are saved.
Description of the drawings:
FIG. 1 is a schematic plan view of the present invention;
FIG. 2 is a schematic view of the structure of the grout stop wall, the consolidation grouting plane of the present invention;
FIG. 3 is a schematic view of the cross-sectional structure of the expanding and replacing arch of the present invention;
fig. 4 is a schematic diagram of the shield and cutterhead escaping treatment.
The specific embodiment is as follows:
the following detailed description of the invention is provided in connection with the accompanying drawings, but the invention is not limited to these embodiments, but is intended to cover any modifications or alternatives within the basic spirit of the invention as defined by the appended claims.
Example 1: as shown in fig. 1, 2, 3 and 4, the method comprises the following steps:
1. grouting a hollow anchor pipe behind the shield, and solidifying surrounding rocks in an operation area;
2. performing expanding excavation arch changing support of a working area of the pipe shed drilling machine;
3. applying a forepoling shed to the front of the tunnel face and the collapse influence area;
4. excavating pilot holes on two sides of the left shield and the right shield;
5. manually cleaning accumulated slag in the collapse area in front of the cutterhead through guide holes on two sides in the cutterhead;
6. the collapse ballast in front of the cutterhead is cleaned until the cutterhead can normally rotate, and the TBM can solve the problem; wherein step 4 can be operated simultaneously with steps 1, 2 and 3.
In the step 1, the specific operation is as follows: the first hollow anchor pipe 22 and grouting are applied from the surrounding rock 3 at the tail of the shield 2 to the range of 1m wide and 6m deep close to the shield 2, the reinforcing grouting material is a double-liquid resin grouting material, and the radial grout stopping wall 19 is manufactured; the second hollow anchor pipe 24 with the interval of 0.4m, the row spacing of 0.8m and the length of 1.5m is applied to the range of the rear digging area 9 of the shield, grouting is carried out, the reinforcing grouting material is a double-liquid resin grouting material, and the annular grout stop wall 20 is manufactured; and finally, a third hollow anchor pipe 23 is arranged in the range of 1-5 m of the expanded excavation area 9, grouting is carried out in the circumferential consolidation range 21, and the reinforcing grouting material is cement-based flow variable-speed solidification material and is used for stabilizing surrounding rock in the working area 5 of the pipe shed drilling machine.
In the step 2, the specific operation is as follows: under the protection of the shield tail portion concreting surrounding rock 3 and the original pre-dismantling steel arch frame part 16, the working area 5 of the pipe shed drilling machine is transversely and gradually expanded and excavated, the closely arranged large steel arch frame 7 is used for supporting, the large steel arch frame 7 and the original pre-dismantling steel arch frame part 16 are reinforced through corresponding connection section steel 17, meanwhile, the large steel arch frame 7 is locked and fixed through the anchor rods 18, the locking anchor rods 18 are grouting, and the working area 5 of the pipe shed drilling machine is sequentially expanded and excavated in the opposite direction of TBM.
In the step 3, the specific operation is as follows: and (3) utilizing the pipe shed working area 5 to make an advanced pipe shed 6 towards the collapse area in the tunneling direction of the TBM, grouting to strengthen surrounding rock 3, and enabling the advanced pipe shed 6 to pass through the collapse influence area 15-30 m, wherein the tail of the shield 2 is arranged at an interval of 30cm and is 120 degrees. Meanwhile, an advanced hollow anchor pipe 8 which forms 15-60 degrees with the shield is arranged at the tail part of the shield, the surrounding rock collapse influence area broken belt 4 is solidified, and the collapse cavity 25 is subjected to grouting reinforcement backfill treatment.
In the step 4, the specific operation is as follows: the surrounding rock at the tail part of the shield is arched upwards by 1m, a longitudinal left pilot tunnel 13 is excavated towards the front of the cutterhead at one side of the left shield 11, a steel arch frame 15 supporting for closely-spaced pilot tunnels is synchronously arranged, a longitudinal right pilot tunnel 12 is excavated towards the front of the cutterhead at one side of the right shield 10, and a steel arch frame 14 supporting for closely-spaced pilot tunnels is synchronously arranged. The fourth step can be synchronously carried out with the step 1, the step 2 and the step 3 so as to save the construction time.
In the step 5, the specific operation is as follows: the accumulated slag in front of the cutterhead 1 is manually cleaned through the excavated left pilot tunnel 13 and right pilot tunnel 12, and meanwhile, the accumulated slag in front of the cutterhead is manually cleaned in the cutterhead 1. Until the cutterhead can rotate normally after cleaning, the TBM can solve the problem.
According to the method, the blocked TBM can be rapidly, safely and conveniently subjected to escaping treatment, the construction period is ensured, and the cost is reduced. Compared with the existing escaping method, the method shortens the construction time by 1 month.
Claims (1)
1. A single shield TBM blocking machine escaping construction method is characterized in that: the method comprises the following steps:
1. grouting a hollow anchor pipe behind the shield, and solidifying surrounding rocks in an operation area;
2. performing expanding excavation arch changing support of a working area of the pipe shed drilling machine;
3. applying a forepoling shed to the front collapse influence area of the tunnel face;
4. digging pilot holes on two sides of the shield;
5. manually cleaning accumulated slag in the collapse area in front of the cutterhead through guide holes on two sides in the cutterhead;
6. the collapse ballast in front of the cutterhead is cleaned until the cutterhead can normally rotate, and the TBM can solve the problem;
in the step 1, the specific operation is as follows: the first hollow anchor pipe and grouting are applied from the surrounding rock at the tail part of the shield, which is close to the shield, in the range of 1m wide and 6m deep, the reinforcing grouting material is a double-liquid resin grouting material, and a radial grout stopping wall is manufactured; the second hollow anchor pipe with the interval of 0.4m, the row spacing of 0.8m and the length of 1.5m is applied to the range of the area to be dug behind the shield, grouting is carried out, the reinforcing grouting material is a double-liquid resin grouting material, and a circumferential grout stopping wall is manufactured; finally, a third hollow anchor pipe is arranged in the range of 1-5 m of the expanded digging area, grouting is carried out in the circumferential consolidation range, and the reinforcing grouting material is cement-based flow variable-speed solidification material and is used for stabilizing surrounding rock in the working area of a pipe shed drilling machine;
in the step 2, the specific operation is as follows: under the protection of the surrounding rock and the original pre-dismantling steel arch frame part fixed at the tail part of the shield, transversely expanding and digging the working area of the pipe shed drilling machine step by step, applying close-packed large steel arch frame support, reinforcing the large steel arch frame and the original pre-dismantling steel arch frame part through corresponding connection section steel, simultaneously applying anchor rods to lock and fix the large steel arch frame, grouting the locking anchor rods, and expanding and digging the working area of the pipe shed drilling machine to the opposite direction of the TBM in sequence;
in the step 3, the specific operation is as follows: utilizing the working area of the pipe shed, making an advanced pipe shed towards the collapse area in the tunneling direction of the TBM, grouting to strengthen surrounding rock, and enabling the advanced pipe shed to pass through the collapse influence area 1530m，The shield tail parts are arranged at intervals of 30cm and 120 ︒; meanwhile, 15 ︒ +.f of the shield is applied to the tail part of the shield>60 ︒, consolidating the broken zone of the collapse influence area of the surrounding rock, and grouting, reinforcing and backfilling the collapse cavity;
in the step 4, the specific operation is as follows: excavating a longitudinal left pilot tunnel towards the front of the cutterhead on one side of a left shield by 1m upwards from a surrounding rock at the tail part of the shield, synchronously constructing a steel arch frame support of the closely arranged pilot tunnels, excavating a longitudinal right pilot tunnel towards the front of the cutterhead on one side of a right shield, and synchronously constructing a steel arch frame support of the closely arranged pilot tunnels;
in the step 5, the specific operation is as follows: manually cleaning accumulated slag in front of the cutterhead through the excavated left pilot tunnel and right pilot tunnel, and manually cleaning the accumulated slag in front of the cutterhead in the cutterhead; until the cutterhead can rotate normally after cleaning, the TBM can solve the problem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011412948.XA CN112502723B (en) | 2020-12-04 | 2020-12-04 | Single-shield TBM blocking machine escaping construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011412948.XA CN112502723B (en) | 2020-12-04 | 2020-12-04 | Single-shield TBM blocking machine escaping construction method |
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| CN112502723A CN112502723A (en) | 2021-03-16 |
| CN112502723B true CN112502723B (en) | 2023-09-29 |
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| CN202011412948.XA Active CN112502723B (en) | 2020-12-04 | 2020-12-04 | Single-shield TBM blocking machine escaping construction method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187498B (en) * | 2021-05-13 | 2022-11-04 | 中铁十六局集团第二工程有限公司 | TBM tunnel collapsed cavity backfilling and advanced pipe shed construction method |
| CN113187499A (en) * | 2021-05-13 | 2021-07-30 | 中铁十六局集团第二工程有限公司 | Weathering alteration belt TBM card machine escaping method |
| CN113202492B (en) * | 2021-05-18 | 2022-10-21 | 盾构及掘进技术国家重点实验室 | TBM grading anti-blocking and anti-poverty-escaping construction method for tunnel in weak and broken stratum |
| CN113236263B (en) * | 2021-06-25 | 2023-03-24 | 中铁十八局集团有限公司 | Construction method of open TBM front-mounted type advanced pipe shed |
| CN114109421B (en) * | 2021-12-03 | 2024-01-30 | 中铁隧道局集团有限公司 | Construction method for open TBM through long fault fracture zone |
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| CN106522963A (en) * | 2016-11-23 | 2017-03-22 | 中铁十八局集团有限公司 | Stuck machine extricating method for TBM during tunnel construction |
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| CN110469340A (en) * | 2019-09-27 | 2019-11-19 | 中国水利水电第十工程局有限公司 | A kind of rock burst tunnel double-shielded TBM card machine is got rid of poverty construction method |
| CN111119913A (en) * | 2020-02-24 | 2020-05-08 | 中铁二院工程集团有限责任公司 | TBM (tunnel boring machine) escaping processing method in tunnel construction and tunnel construction structure |
| CN211692469U (en) * | 2020-02-24 | 2020-10-16 | 中铁二院工程集团有限责任公司 | Tunnel construction structure for treating TBM (tunnel boring machine) escaping |
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2020
- 2020-12-04 CN CN202011412948.XA patent/CN112502723B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522963A (en) * | 2016-11-23 | 2017-03-22 | 中铁十八局集团有限公司 | Stuck machine extricating method for TBM during tunnel construction |
| CN108412509A (en) * | 2018-03-30 | 2018-08-17 | 重庆大学 | The anti-card machine method of double-shielded TBM |
| CN110469340A (en) * | 2019-09-27 | 2019-11-19 | 中国水利水电第十工程局有限公司 | A kind of rock burst tunnel double-shielded TBM card machine is got rid of poverty construction method |
| CN111119913A (en) * | 2020-02-24 | 2020-05-08 | 中铁二院工程集团有限责任公司 | TBM (tunnel boring machine) escaping processing method in tunnel construction and tunnel construction structure |
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