CN113202491B - TBM dismounting construction method - Google Patents
TBM dismounting construction method Download PDFInfo
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- CN113202491B CN113202491B CN202110508849.XA CN202110508849A CN113202491B CN 113202491 B CN113202491 B CN 113202491B CN 202110508849 A CN202110508849 A CN 202110508849A CN 113202491 B CN113202491 B CN 113202491B
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- 238000010276 construction Methods 0.000 title claims abstract description 69
- 230000005641 tunneling Effects 0.000 claims abstract description 22
- 238000004804 winding Methods 0.000 claims abstract description 21
- 239000011435 rock Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000005422 blasting Methods 0.000 claims abstract description 6
- 238000005553 drilling Methods 0.000 claims abstract description 6
- 238000009412 basement excavation Methods 0.000 claims description 11
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- E21D9/08—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
- E21D9/087—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 with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face 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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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a TBM disassembly construction method, which comprises the steps of determining the tunneling stop position of a TBM and the starting and stopping position of a construction winding hole according to the engineering geological condition of a main hole outlet, and determining the size of a disassembly room in the main hole according to the size of a TBM host; after the TBM tunnels to a determined tunneling machine stopping position along the main tunnel, excavating and supporting construction around the tunnel by adopting a drilling and blasting method; excavating and supporting a TBM tunneling main tunnel outlet and a TBM dismantling room by utilizing a construction winding tunnel; and the host of the TBM is synchronously detached from the back support by utilizing a lifting point and a rock anchor beam which are additionally arranged above the back support of the TBM and the host of the TBM. According to the invention, under the condition that the condition of a TBM tunneling main tunnel outlet is severe and a traffic access cannot be added, the TBM in-tunnel dismounting is carried out between the construction winding tunnel and the TBM host dismounting, so that parallel operation of TBM dismounting and in-tunnel construction is realized, synchronous dismounting of the TBM host and the TBM in a matched mode is realized, the TBM dismounting speed is accelerated, and the construction period is shortened.
Description
Technical Field
The invention relates to a TBM dismounting construction method, in particular to a construction method for realizing synchronous dismounting of a TBM host and a rear support by using a construction winding tunnel as a traffic tunnel under the condition that the condition of a TBM tunneling main tunnel outlet is severe and a traffic access cannot be added.
Background
In the tunneling construction of a TBM tunnel, when the geological condition of a tunnel exit is good, the tunnel exit is usually tunneled by the TBM, and the TBM is removed outside the tunnel; when the geological conditions of the tunnel exit are poor, the tunnel exit is constructed by adopting a drilling and blasting method, and then the TBM slides out of the tunnel. However, under the condition that the exit of a TBM tunneling main tunnel is an unmanned area or a cliff and a traffic sidewalk cannot be added, and meanwhile, the exit of the tunnel is an unloading zone, surrounding rock cracks develop or a covering layer is deep, the tunnel is tunneled or slipped out by adopting the TBM, so that a card is trapped in a light situation, and a machine is damaged and people are killed in a heavy situation, thereby severely restricting the engineering safety and the engineering investment.
Most of the existing TBM dismounting methods are that after the TBM is dismounted after expanding excavation, the supporting part and the host are transported out from a main tunnel, for example, a dismounting method in a TBM cavern is disclosed in CN105240022B, the roof of the supporting part at the position after local expanding excavation is provided, by arranging dismounting tools such as fixed hoisting points and the like, the supporting part is dismounted to the host from the supporting part, and the supporting host is transported out from the main tunnel outlet.
Disclosure of Invention
Aiming at the defects in the background technology, the invention provides a TBM dismounting construction method which can realize synchronous dismounting of a TBM host and a TBM after matching, reduce cross interference of construction in a hole, accelerate the project progress and reduce the project investment.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a TBM disassembly construction method which is characterized by comprising the following steps:
(1) a TBM is arranged to tunnel along the main tunnel, and a construction winding tunnel communicated with the main tunnel is arranged near the main tunnel; determining a tunneling stop position of the TBM and a starting and stopping position of a construction winding tunnel according to the engineering geological condition of the main tunnel outlet; determining the size of a disassembly room in the main hole according to the size of the TBM host;
(2) after the TBM tunnels to the tunneling machine-stopping position determined in the step 1) along the main tunnel, respectively excavating and supporting construction around the tunnel by adopting a drilling and blasting method;
(3) excavating and supporting a TBM tunneling main tunnel outlet and a TBM dismantling room by utilizing a construction winding tunnel;
(4) respectively adding a lifting point and a rock anchor beam above the TBM rear support and the TBM main machine;
(5) the main machine of the TBM is synchronously disassembled with the rear matching: hoisting the TBM by using a hoisting point in the main tunnel in a matching manner to a construction around-tunnel excavation starting point, and then transporting the TBM by using transport equipment in a matching manner out of a construction around-tunnel outlet; and (4) assisting the disassembly of the TBM main machine by using a rock anchor beam in the main tunnel and conveying the TBM main machine out of a construction tunnel outlet, wherein the disassembly of two ends of the TBM is carried out simultaneously.
The invention has the following characteristics and beneficial effects:
the invention provides a TBM dismounting construction method which is suitable for single-side tunneling of a TBM and dismounting the TBM after tunneling is completed under the condition that outlet geological conditions are severe or cliff is formed. According to the geological conditions of the tunnel exit, a TBM dismantling construction method of 'construction around the tunnel + TBM host dismantling room' is adopted, so that on one hand, parallel operation of TBM dismantling and in-tunnel construction is realized, cross interference of in-tunnel construction is reduced, the engineering progress is accelerated, and the engineering investment is reduced; on the other hand, the TBM host machine and the TBM are synchronously disassembled in a matched mode, the TBM disassembling construction speed is increased, and the project construction period is shortened.
Drawings
Fig. 1 is a schematic diagram of a TBM disassembly construction method of the present invention.
Fig. 2 is a schematic diagram of the disassembly of the TBM post-assembly of the present invention.
Fig. 3 is a schematic diagram of the disassembly of the TBM host in the present invention.
Reference numerals:
1: a main hole; 2: constructing a winding hole; 3: a main tunnel outlet; 4: TBM; 5: TBM post-matching; 6: a TBM host; 7: excavating a starting point around the hole; 8: constructing a tunnel-winding outlet; 9: a TBM shutdown position; 10: disassembling the crane; 11: a disassembling room; 12: rock anchor beam.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
In order to better understand the invention, an application example of the TBM dismounting construction method provided by the invention is explained in detail below.
The TBM dismounting construction method provided by the embodiment of the invention is suitable for the situation that the geological conditions at the main tunnel outlet of the TBM are severe or the cliff is formed, and a TBM host cannot tunnel from the main tunnel outlet. The method comprises the following steps:
(1) the TBM4 is arranged to tunnel along the main tunnel 1, a construction winding tunnel 2 communicated with the main tunnel 1 is arranged near the main tunnel 1, and the construction winding tunnel directly leads to the main tunnel outlet and is used for providing a traffic channel for the main tunnel outlet, the excavation of a dismantling room, the supporting and the TBM dismantling; determining a tunneling stopping position 9 of the TBM4 and a starting and stopping position of the construction winding hole 2 according to the engineering geological condition of the main hole outlet 3; determining the size of a disassembly room 11 in the main hole 1 according to the size of the TBM host 6; wherein, the tunneling shutdown position 9 of the TBM4 is to ensure that the geological condition of the area where the TBM head 6 is located is good and basically comprises II and III surrounding rocks; in order to ensure construction safety, when the TBM4 is positioned at the tunneling stop position 9, the distance between the construction tunnel-winding excavation starting point 7 and the TBM tail 5 is at least 150m, and the construction tunnel-winding excavation starting point 7 is communicated with the main tunnel 1; the distance between the construction winding tunnel 2 and the TBM tunneling main tunnel 1 is 5-10 times of the diameter of the main tunnel 1; the construction around-tunnel outlet 8 is selected in an area with good geological conditions, is basically II and III surrounding rocks and can be level with the position of the main tunnel outlet 3; the disassembly room 11 is located near the main hole outlet 3, the horizontal width of the disassembly room 11 is 1.2-1.5 times of the diameter of the TBM cutter head, and the longitudinal length of the disassembly room 11 is 1.5 times of that of the TBM main machine 6.
(2) And after the TBM4 tunnels to the tunneling stopping position 9 along the main tunnel 1, excavating and supporting (supporting through a spray anchor or a lining) the construction surrounding tunnel 2 by adopting a drilling and blasting method, wherein the horizontal width of the construction surrounding tunnel 2 is at least designed to be a single lane, and is generally 5-7 m.
(3) And excavating and supporting the TBM tunneling main tunnel outlet 3 and the TBM dismantling room 11 by utilizing the construction winding tunnel 2.
Because the geological condition at the TBM main tunnel outlet 3 is severe or the cliff is formed, the TBM main machine can not tunnel out, the construction is firstly carried out from the tunnel 2 to the safety outlet, then the construction is carried out from the tunnel 8, the main tunnel outlet 3 is constructed from outside to inside, then the main machine disassembly room 11 is constructed, and the excavation support of the main tunnel outlet 3 and the disassembly room 11 is constructed through spray anchor or lining support according to the drilling and blasting method.
(4) Respectively adding a lifting point 10 and a rock anchor beam 12 above a TBM rear support and a TBM main machine;
a lifting point 10 is arranged above the TBM rear support 5, and the lifting capacity is at least 20 tons, as shown in figure 2; and (3) installing rock anchor beams 12 with the hoisting capacity of at least 50 tons on the top of the main tunnel dismantling room 11 for dismantling the TBM main machine 6, as shown in figure 3.
(5) The main machine of the TBM4 is synchronously disassembled with the back matching: hoisting the TBM rear support 5 to a construction around-hole excavation starting point 7 by using a hoisting point 10 in the main hole 1, and then transporting the TBM rear support 5 out of a construction around-hole outlet 8 by using transportation equipment; the rock anchor beam 12 in the main tunnel 1 is used for assisting the disassembly of the TBM main machine 6 and transporting the TBM main machine out of the construction tunnel outlet 8, and the disassembly of the two ends of the TBM4 is carried out simultaneously.
The above is only a preferred embodiment of the present invention, it should be noted that the above embodiment does not limit the present invention, and various changes and modifications made by workers within the scope of the technical idea of the present invention fall within the protection scope of the present invention.
Claims (7)
1. The TBM dismounting construction method is characterized by comprising the following steps:
(1) a TBM is arranged to tunnel along the main tunnel, and a construction winding tunnel communicated with the main tunnel is arranged near the main tunnel; determining a tunneling stop position of the TBM and a starting and stopping position of a construction winding tunnel according to the engineering geological condition of the main tunnel outlet; determining the size of a disassembly room in the main hole according to the size of the TBM host;
(2) after the TBM tunnels to the tunneling machine-stopping position determined in the step 1) along the main tunnel, respectively excavating and supporting construction around the tunnel by adopting a drilling and blasting method;
(3) excavating and supporting a TBM tunneling main tunnel outlet and a TBM dismantling room by utilizing a construction winding tunnel;
(4) respectively adding a lifting point and a rock anchor beam above the TBM rear support and the TBM main machine;
(5) the main machine of the TBM is synchronously disassembled with the rear matching: hoisting the TBM by using a hoisting point in the main tunnel in a matching manner to a construction around-tunnel excavation starting point, and then transporting the TBM by using transport equipment in a matching manner out of a construction around-tunnel outlet; and (4) assisting the disassembly of the TBM main machine by using a rock anchor beam in the main tunnel and conveying the TBM main machine out of a construction tunnel outlet, wherein the disassembly of two ends of the TBM is carried out simultaneously.
2. The TBM dismounting construction method according to claim 1, wherein the TBM is driven to stop at a position such that the geology of the area where the TBM nose is located is II and III surrounding rocks; and the geological conditions of the area where the construction tunnel outlet is located are II and III surrounding rocks.
3. The TBM disassembly construction method of claim 1, wherein the distance between the construction detour excavation starting point and the tail of the TBM is at least 150m when the TBM is at the tunneling stop position, and the construction detour excavation starting point is communicated with the main tunnel.
4. The TBM dismounting construction method according to claim 1, wherein the distance between the construction winding hole and the main hole is 5-10 times of the diameter of the main hole.
5. The TBM disassembly construction method of claim 1, wherein the construction is flush with the main tunnel outlet around the tunnel outlet.
6. The TBM disassembly construction method of claim 1, wherein the horizontal width of the construction winding hole is at least designed to be a single lane.
7. The TBM disassembly construction method of claim 1, wherein the hoisting capacity of the hoisting point is at least 20 tons; the lifting capacity of the rock anchor beam is at least 50 tons.
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| CN202110508849.XA CN113202491B (en) | 2021-05-11 | 2021-05-11 | TBM dismounting construction method |
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| CN202110508849.XA CN113202491B (en) | 2021-05-11 | 2021-05-11 | TBM dismounting construction method |
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| JP3836686B2 (en) * | 2001-04-26 | 2006-10-25 | 進和技術開発株式会社 | Propulsion drilling equipment capable of split collection |
| CN107035380A (en) * | 2017-05-25 | 2017-08-11 | 淮南矿业(集团)有限责任公司 | A kind of mining TBM retrusives method for dismounting |
| CN107355226B (en) * | 2017-08-23 | 2023-08-22 | 中国电建集团成都勘测设计研究院有限公司 | Broken area hole section processing structure of TBM construction tunnel fault |
| CN108678781A (en) * | 2018-06-12 | 2018-10-19 | 中铁二十局集团轨道交通工程有限公司 | One kind closing on river shield launching end stratum consolidation method |
| CN109372529B (en) * | 2018-09-28 | 2020-04-24 | 中国葛洲坝集团第一工程有限公司 | In-tunnel dismantling device and method for hard rock heading machine |
| CN212985227U (en) * | 2020-06-30 | 2021-04-16 | 中铁第六勘察设计院集团有限公司 | Underground shared cavern structure for dismounting TBM |
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