CN202560245U - Multifunctional trolley with freely retractable arms - Google Patents
Multifunctional trolley with freely retractable arms Download PDFInfo
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- CN202560245U CN202560245U CN 201220211278 CN201220211278U CN202560245U CN 202560245 U CN202560245 U CN 202560245U CN 201220211278 CN201220211278 CN 201220211278 CN 201220211278 U CN201220211278 U CN 201220211278U CN 202560245 U CN202560245 U CN 202560245U
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- chassis
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- encorbelmenting
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Abstract
The utility model discloses a multifunctional trolley with freely retractable arms. The multifunctional trolley comprises a trolley frame, and ladders for climbing and an operating platform divided into an upper layer and a lower layer are arranged on the trolley frame. Each layer of the operating platform comprises retractable cantilevers and footsteps, wherein the retractable cantilevers fixedly mounted on the trolley frame are capable of expanding outwards freely, and the footsteps are detachably mounted on the retractable cantilevers. With the trolley frame and the ladders, the multifunctional trolley with the freely retractable arms can substitute for a conventional scaffold built easily or a construction rack utilized in construction, the trolley frame is high in stability and safety performance. As the operating platform is arranged on the trolley frame and the retractable cantilevers of the operating platform can retract or extend optionally, operators can be sent to huge core soil demolishing construction areas or construction areas of secondary lining of reinforcement and waterproof plates, and more convenience can be brought to construction.
Description
Technical field
The utility model belongs to the underground construction technical field, and concrete is the multi-functional chassis of a kind of free telescopic arm, is mainly used in the native dismounting construction of tall and big core that city shallow embedding extra-large cross-section double side wall pilot tunnel method is reserved.
Background technology
For the extra-large cross-section tunnel, the especially subway station that are positioned at downtown area, city central authorities and shallow buried covered excavation, excavated section reaches more than the 400m2, core soil remove highly reach 15m above the tunnel, construction safety is heavy difficult point.City shallow embedding extra-large cross-section bored tunnel generally adopts the double side wall pilot tunnel method to reserve the excavation method of core soil; Extra-large cross-section branch left and right sides side wall drift and central core soil branch are excavated; Accomplish the excacation of left and right sides side wall drift earlier, form the interim support of left and right sides side wall drift supporting and central core soil, remove the tall and big core soil that the middle part is reserved at last; Yet how safety is removed tall and big core soil is very difficult problem in the work progress.
Half only is to set up easy scaffold or utilize a builder's staging for traditional construction equipment that is used to remove tall and big core soil; The tall and big core soil of reserving is pressed the benching tunnelling method segmentation to be removed; But because scaffold and stand do not possess flexibility, in removing the core soil process of upper and lower, the slungshot that is easy to be removed in the process smashes; The loss of frame pipe and stand is huge; The operating personnel on scaffold and stand, carry out bow member closed during with first the work high above the ground of excavation potential safety hazard also very big, and two follow-up lining constructions receive the influence of the scaffold and the stand of front, the laying construction progress of two lined steel muscle, splash guard is difficult to carry out; It is of a specified duration excessively that big section just serves as a contrast open-assembly time, is unfavorable for safety.
Given this; The utility model is intended to explore the multi-functional chassis of a kind of free telescopic arm; The multi-functional chassis of this free telescopic arm not only can be applicable to the dismounting construction of the tall and big core soil that city shallow embedding extra-large cross-section double side wall pilot tunnel method is reserved; And convenient, the safety of constructing, and be convenient to two lined steel muscle and splash guard construction.
Summary of the invention
The technical problem that the utility model will solve is to propose the multi-functional chassis of a kind of free telescopic arm; The multi-functional chassis of this free telescopic arm not only can be applicable to the dismounting construction of the tall and big core soil that city shallow embedding extra-large cross-section double side wall pilot tunnel method is reserved; And convenient, the safety and quick of constructing, and be convenient to two lined steel muscle and splash guard construction.
Realize above-mentioned technical purpose; The multi-functional chassis of free telescopic arm of the utility model; Comprise the chassis vehicle frame; Said chassis vehicle frame is provided with the staircase that is used to climb and presents the operating platform that lower leaf is provided with, and includes flexible beam and the pedal that is removably mounted on the said flexible beam of encorbelmenting of encorbelmenting that is fixedly mounted on the said chassis vehicle frame and can freely outwards stretches on each layer operation platform.
Further, said flexible be arranged on with encorbelmenting distance between girders said chassis vehicle frame around;
Further, the said flexible beam of encorbelmenting is the expansion link structure, and the loop bar of the said flexible beam of encorbelmenting is fixedly mounted on the said chassis vehicle frame, and the core bar of the said flexible beam of encorbelmenting is sleeved in the said loop bar, fixes through the bolt bayonet lock between said loop bar and the core bar;
Further, be provided with protective screening between said adjacent two operating platforms;
Further; Also comprise running gear; Said running gear comprises traction electric machine, is arranged on ground track and is arranged on the roller that said chassis vehicle frame bottom cooperates with said track that said chassis vehicle frame moves along said track under the effect of said traction electric machine;
Further, also comprise the Liftable type feet that is arranged on said chassis bottom of frame;
Further, totally 5 layers of said operating platforms, the spacing between the three layer operation platforms topmost is 3m;
Further, the horizontal span of said chassis vehicle frame is 23m, and vertically width is 6m, highly is 15m.
The beneficial effect of the utility model is:
The multi-functional chassis of free telescopic arm of the utility model can replace traditional setting up easy scaffold or utilize a builder's staging, and this chassis vehicle frame is more firm through chassis vehicle frame and staircase are set, and security performance is higher; Through setting operation platform on the chassis vehicle frame; Through the flexible beam elongation of encorbelmenting of operating platform is shortened; Can the staff be delivered to dismounting construction area or the two lined steel muscle and the splash guard construction area of tall and big core soil, convenient, its concrete effect is following:
1, multi-functional shaped steel chassis vehicle frame can varying sized size, and to be applicable to the tunnel of dissimilar sections, disposable utilization has reduced repeatedly input and maintenance cost that tradition utilizes scaffold and stand to remove core soil, thereby arrives the purpose of saving cost;
2, the flexible beam of encorbelmenting can free adjustment length being fit to field condition, the labor service personnel that remove tall and big core soil and two lining waterproof, reinforcement construction for the extra-large cross-section tunnel provide safely, operating platform easily, have solved the high risk safety problem of work high above the ground;
3, enough carry out the parallel operations of a plurality of scope of operations, promptly carry out operations such as core soil excavation, inverted arch construction, Second Lining Construction simultaneously, make the series of construction operation of core soil excavation and follow-up secondary lining form continuous productive process, improved efficiency of construction.
Description of drawings
Fig. 1 is the structural representation of the multi-functional chassis embodiment of the free telescopic arm of the utility model;
Fig. 2 is the lateral view of Fig. 1;
Fig. 3 removes the phase I sketch map of tall and big core soil for the multi-functional chassis of free telescopic arm that adopts present embodiment;
Fig. 4 removes the second stage sketch map of tall and big core soil for the multi-functional chassis of free telescopic arm that adopts present embodiment;
Sketch map when Fig. 5 lays splash guard, colligation upstream face reinforcing bar and colligation back side reinforcing bar for the multi-functional chassis of the free telescopic arm that adopts present embodiment;
Fig. 6 removes the construction process figure of tall and big core soil for the multi-functional chassis of free telescopic arm that adopts present embodiment.
The specific embodiment
Elaborate below in conjunction with the specific embodiment of accompanying drawing to the utility model.
As shown in Figure 1, be the structural representation of the multi-functional chassis embodiment of the free telescopic arm of the utility model; Fig. 2 is the lateral view of Fig. 1.
The multi-functional chassis of free telescopic arm of present embodiment; Comprise chassis vehicle frame 1; Chassis vehicle frame 1 is provided with the staircase 2 that is used to climb and presents the operating platform 3 that lower leaf is provided with, and includes flexible beam 4 and the pedal that is removably mounted on the said flexible beam of encorbelmenting of encorbelmenting that is fixedly mounted on the chassis vehicle frame 1 and can freely outwards stretches on each layer operation platform 3.The both sides of the chassis vehicle frame 1 of present embodiment are equipped with staircase 2, and with staff's chassis vehicle frame 1 up and down.Preferably, the flexible beam 4 of encorbelmenting of present embodiment be spaced apart and arranged in chassis vehicle frame 1 around, adopt the flexible beam 4 of encorbelmenting of this structure can each layer operation platform 3 be fused, and enlarge staff's construction area scope.
The multi-functional chassis of free telescopic arm of present embodiment can replace traditional setting up easy scaffold or utilize a builder's staging, and chassis vehicle frame 1 is more firm through chassis vehicle frame 1 and staircase 2 are set, and security performance is higher; Through setting operation platform 3 on chassis vehicle frame 1, through flexible beam 4 elongations of encorbelmenting of operating platform 3 are shortened, can the staff be delivered to dismounting construction area or the two lined steel muscle and the splash guard construction area of tall and big core soil, convenient.
Further, the flexible beam 4 of encorbelmenting is the expansion link structure, and the loop bar 5 of the flexible beam 4 of encorbelmenting is fixedly mounted on the chassis vehicle frame 1; The core bar 6 of the flexible beam 4 of encorbelmenting is sleeved in the loop bar 5, fixes through the bolt bayonet lock between loop bar 5 and the core bar 6, adopts the flexible beam 4 of encorbelmenting of this structure; Not only can realize extending the purpose of shortening, and can extend and shorten to suitable length according to actual needs, after loop bar 5 and core bar 6 are fixed; At the flexible beam 4 of encorbelmenting pedal is installed again, is convenient to staff's walking.Preferably, be provided with protective screening between adjacent two operating platforms 3,, can prevent effectively that the slungshot that drops from smashing the injury staff, improves installation capability through protective screening is set.
Further; The multi-functional chassis of free telescopic arm of present embodiment also comprises running gear; The running gear of present embodiment comprises traction electric machine 7, is arranged on ground track 8 and is arranged on the roller 9 that chassis vehicle frame 1 bottom cooperates with track 8; Roller 9 is installed on the walking beam 11, and walking beam 11 is fixedly installed on the bottom of chassis vehicle frame 1, and chassis vehicle frame 1 moves along track 8 under the effect of traction electric machine 7.The track 8 of present embodiment is provided with 3 parallel road slide rails.Through running gear is set, can make things convenient for mobile trolley used vehicle frame 1, and chassis vehicle frame 1 is moved to the zone that needs construction, be convenient to construction.Preferably; The multi-functional chassis of free telescopic arm of present embodiment also comprises the Liftable type feet 10 that is arranged on chassis vehicle frame 1 bottom; Through Liftable type feet 10 is set; Chassis vehicle frame 1 adopts Liftable type feet 10 brace table vehicle carriages 1 after the effect of running gear is moved to the position of setting, prevent that chassis vehicle frame 1 from moving on track 8.
Further; Needs for the native dismounting construction of the tall and big core that satisfies the reservation of city shallow embedding extra-large cross-section double side wall pilot tunnel method; Totally 5 layers of the operating platforms 3 of present embodiment, the spacing between the three layer operation platforms 3 topmost is 3m, is convenient to core soil is carried out the staged of phase I and removes.The horizontal span B=23m of the chassis vehicle frame 1 of present embodiment, vertical width L=6m, height H=15m can satisfy the needs of the dismounting construction of the tall and big core soil that city shallow embedding extra-large cross-section double side wall pilot tunnel method reserves.
Introduce the multi-functional chassis of the free telescopic arm that adopts present embodiment below and remove the native construction sequence of tall and big core that city shallow embedding extra-large cross-section double side wall pilot tunnel method is reserved, construction process figure is as shown in Figure 6.
(1) core soil I number, II number and III bench excavation
Each bench excavation height is 3m, and each construction circulation is 1.5m, the leading next step longitudinal length 3.0m of each step; As shown in Figure 3; Carry out the closure of vault bow member after the I bench excavation is accomplished immediately, bury the bow member stressometer then underground, carry out monitoring measurement; If feeding back the data that through monitoring measurement does not occur unusually, then regulate the length of the flexible beam 4 of encorbelmenting, beam 4 elongations of encorbelmenting of will stretching through the bolt bayonet lock; And on the flexible beam 4 of encorbelmenting, the thick pedal of 2cm is installed, pedal adopts steel plate to process, and in the both sides of pedal safety guard net is set; The platform of safety of workers operation is provided, has solved vertically far away, vertical high and can't excavate the situation of core soil; After adjusting the length of the flexible beam 4 of encorbelmenting; Continue I number of the next circulation core soil of excavation, II number and III step, preliminary bracing is closed, bury the bow member stressometer underground; If to feed back the data variation that bigger for monitoring measurement, then suspend the excavation of follow-up core soil I number, II number and III step, in time execute and make shaped steel well cabinet frame, strengthen the support of vault, prevent that vault from a large amount of sedimentations occurring and causing security incident.
(2) core soil IV number, V number and VI bench excavation
Utilize the multi-functional chassis of free telescopic arm of present embodiment will be positioned at the excavation with down IV number of III step, V number and VI step longitudinal length 6m II number, be disposable excavation, slag tap after the excavation completion.
(3) the flexible beam 4 of encorbelmenting of elongation continue excavation cores soil I number, II number and III step
When excavation core soil IV number, V number and VI step, the flexible beam 4 of encorbelmenting of longitudinal tensile strain continues excavation cores soil I number, II number and III step, this operation can with excavation core soil IV number, V number and the parallel construction of VI step.
The anti-draining of (4) two linings, the construction of two lined steel muscle
When excavation core soil IV number, V number and VI step, the flexible beam 4 of encorbelmenting of transverse extension carries out the anti-draining of two linings, the construction of two lined steel muscle, this operation equally also can with excavation core soil IV number, V number and the parallel construction of VI step; The area that the splash guard of extra-large cross-section is executed work is big; The reinforced steel bar ring of each section is very long to length; Reach 56m, the staff can rely on the multi-functional chassis of free telescopic arm of present embodiment to carry out the laying and the secondary laid reinforcement binding of splash guard, because the maximum section secondary lining thickness at station is 1.5m; When laying splash guard and colligation upstream face reinforcing bar, the flexible beam 4 of encorbelmenting of elongation is operated; In colligation back side reinforcing bar, shorten the flexible beam 4 of encorbelmenting and carry out the back side laid reinforcement binding, follow-up system relies on the mode of the flexible beam 4 of encorbelmenting to operate too when pacifying template, as shown in Figure 5.
5) the long inverted arch of excavation 6m
Because concrete lining platform building cart length is 6m, 6m is a mould.Therefore excavate the long inverted arch of vertical 6m, inverted arch transports dregs outside the hole after excavating design end absolute altitude.
(6) inverted arch construction
After the long inverted arch excavation of 6m is accomplished, carry out cushion layer concrete and build and cover inverted arch base plate basement rock, lay splash guard then, build concrete cover, the inverted arch reinforcing bar binding, carry out the inverted arch concrete at last and build.
(7) arch wall two lining constructions
The inverted arch concrete is built short abutment wall concrete after building completion immediately, then with multi-functional chassis reach, and the core soil of the next circulation of excavation.Also toward reach, the 6m two lined steel muscle that last mould colligation is good then carry out building of two lining concretes with the sealing of retaining head mould plate to the concrete lining platform building cart immediately following multi-functional shaped steel chassis.
Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model; And not breaking away from the aim and the scope of the utility model technical scheme, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (8)
1. multi-functional chassis of free telescopic arm; It is characterized in that: comprise the chassis vehicle frame; Said chassis vehicle frame is provided with the staircase that is used to climb and presents the operating platform that lower leaf is provided with, and includes flexible beam and the pedal that is removably mounted on the said flexible beam of encorbelmenting of encorbelmenting that is fixedly mounted on the said chassis vehicle frame and can freely outwards stretches on each layer operation platform.
2. the multi-functional chassis of free telescopic arm according to claim 1 is characterized in that: said flexible be arranged on with encorbelmenting distance between girders said chassis vehicle frame around.
3. the multi-functional chassis of free telescopic arm according to claim 2; It is characterized in that: the said flexible beam of encorbelmenting is the expansion link structure; The loop bar of the said flexible beam of encorbelmenting is fixedly mounted on the said chassis vehicle frame; The core bar of the said flexible beam of encorbelmenting is sleeved in the said loop bar, fixes through the bolt bayonet lock between said loop bar and the core bar.
4. the multi-functional chassis of free telescopic arm according to claim 3 is characterized in that: be provided with protective screening between the said adjacent two layers operating platform.
5. according to the multi-functional chassis of each described free telescopic arm of claim 1-4; It is characterized in that: also comprise running gear; Said running gear comprises traction electric machine, is arranged on ground track and is arranged on the roller that said chassis vehicle frame bottom cooperates with said track that said chassis vehicle frame moves along said track under the effect of said traction electric machine.
6. the multi-functional chassis of free telescopic arm according to claim 5 is characterized in that: also comprise the Liftable type feet that is arranged on said chassis bottom of frame.
7. according to the multi-functional chassis of each described free telescopic arm of claim 1-4, it is characterized in that: totally 5 layers of said operating platforms, the spacing between the three layer operation platforms topmost is 3m.
8. the multi-functional chassis of free telescopic arm according to claim 7 is characterized in that: the horizontal span of said chassis vehicle frame is 23m, and vertically width is 6m, highly is 15m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220211278 CN202560245U (en) | 2012-05-11 | 2012-05-11 | Multifunctional trolley with freely retractable arms |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220211278 CN202560245U (en) | 2012-05-11 | 2012-05-11 | Multifunctional trolley with freely retractable arms |
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| CN202560245U true CN202560245U (en) | 2012-11-28 |
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| CN 201220211278 Expired - Fee Related CN202560245U (en) | 2012-05-11 | 2012-05-11 | Multifunctional trolley with freely retractable arms |
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| CN105697029A (en) * | 2016-02-25 | 2016-06-22 | 中铁十八局集团有限公司 | Multi-purpose drilling and excavating trolley for single track railway tunnel |
| CN105822322A (en) * | 2016-04-23 | 2016-08-03 | 中交公局桥隧工程有限公司 | Two-purpose trolley combined supporting structure |
| CN106050272A (en) * | 2016-07-25 | 2016-10-26 | 中车建设工程有限公司 | Multifunctional rack for installing lining steel bars and laying waterproof boards special for tunnels |
| CN106368714A (en) * | 2015-07-24 | 2017-02-01 | 中国铁建大桥工程局集团有限公司 | Tire type automatic lifting assembly rack for tunnel excavation construction |
| CN106437795A (en) * | 2016-11-25 | 2017-02-22 | 中铁隧道集团第五建筑有限公司 | Tunnel vehicle-mounted folding type multifunctional work rack |
| CN106640145A (en) * | 2017-02-27 | 2017-05-10 | 中国恩菲工程技术有限公司 | Bearing connecting girder used for downhole tracked unloading point and downhole tracked unloading point |
| CN106812534A (en) * | 2017-03-27 | 2017-06-09 | 中国华冶科工集团有限公司 | Mine big cross section excavation builder's staging |
| CN107237639A (en) * | 2017-07-19 | 2017-10-10 | 中铁十局集团第工程有限公司 | A kind of split type two side-wall pilot tunnel tunnel lining trolley |
| CN107869353A (en) * | 2017-12-12 | 2018-04-03 | 中交公局第二工程有限公司 | Multifunctional tunnel Mobile workbench |
| CN109057833A (en) * | 2018-08-17 | 2018-12-21 | 中国十七冶集团有限公司 | A kind of construction trolley of anchor bar of waterproof plate in tunnels |
| CN109236302A (en) * | 2018-10-29 | 2019-01-18 | 中铁五局集团成都工程有限责任公司 | A kind of tunnel variable section excavation trolley |
| CN109488327A (en) * | 2018-12-11 | 2019-03-19 | 成都大学 | A kind of tunnel rack |
| CN109826655A (en) * | 2019-02-28 | 2019-05-31 | 黄河水利职业技术学院 | A kind of construction of hydro project support safety protective device |
| CN110145314A (en) * | 2019-05-10 | 2019-08-20 | 中建隧道建设有限公司 | A kind of method that the tall and big Core Soil of extra-large cross-section bored tunnel is removed |
| CN110500113A (en) * | 2019-09-20 | 2019-11-26 | 中铁二局第二工程有限公司 | A kind of micro- bench excavation combination rack in tunnel and the micro- bench excavation method in tunnel |
| CN111594179A (en) * | 2020-05-06 | 2020-08-28 | 中铁隆工程集团有限公司 | One-step forming construction method for excavation of large-section arch cover of underground excavated station of subway |
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2012
- 2012-05-11 CN CN 201220211278 patent/CN202560245U/en not_active Expired - Fee Related
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| CN106368714A (en) * | 2015-07-24 | 2017-02-01 | 中国铁建大桥工程局集团有限公司 | Tire type automatic lifting assembly rack for tunnel excavation construction |
| CN105697029A (en) * | 2016-02-25 | 2016-06-22 | 中铁十八局集团有限公司 | Multi-purpose drilling and excavating trolley for single track railway tunnel |
| CN105697029B (en) * | 2016-02-25 | 2018-10-26 | 中铁十八局集团有限公司 | A kind of single-track railway tunnel Drillhole excavation trolley |
| CN105822322A (en) * | 2016-04-23 | 2016-08-03 | 中交公局桥隧工程有限公司 | Two-purpose trolley combined supporting structure |
| CN106050272A (en) * | 2016-07-25 | 2016-10-26 | 中车建设工程有限公司 | Multifunctional rack for installing lining steel bars and laying waterproof boards special for tunnels |
| CN106050272B (en) * | 2016-07-25 | 2017-12-08 | 中车建设工程有限公司 | Multifunctional rack for installing lining steel bars and laying waterproof boards special for tunnels |
| CN106437795B (en) * | 2016-11-25 | 2018-07-31 | 中铁隧道集团第五建筑有限公司 | Tunnel vehicle carried folding multi-function operation rack |
| CN106437795A (en) * | 2016-11-25 | 2017-02-22 | 中铁隧道集团第五建筑有限公司 | Tunnel vehicle-mounted folding type multifunctional work rack |
| CN106640145A (en) * | 2017-02-27 | 2017-05-10 | 中国恩菲工程技术有限公司 | Bearing connecting girder used for downhole tracked unloading point and downhole tracked unloading point |
| CN106640145B (en) * | 2017-02-27 | 2019-10-08 | 中国恩菲工程技术有限公司 | Support connection girder steel and underground rail discharge point for underground rail discharge point |
| CN106812534A (en) * | 2017-03-27 | 2017-06-09 | 中国华冶科工集团有限公司 | Mine big cross section excavation builder's staging |
| CN107237639A (en) * | 2017-07-19 | 2017-10-10 | 中铁十局集团第工程有限公司 | A kind of split type two side-wall pilot tunnel tunnel lining trolley |
| CN107237639B (en) * | 2017-07-19 | 2023-08-25 | 中铁十局集团第一工程有限公司 | Tunnel lining trolley adopting split type double-side-wall pilot tunnel method |
| CN107869353A (en) * | 2017-12-12 | 2018-04-03 | 中交公局第二工程有限公司 | Multifunctional tunnel Mobile workbench |
| CN109057833A (en) * | 2018-08-17 | 2018-12-21 | 中国十七冶集团有限公司 | A kind of construction trolley of anchor bar of waterproof plate in tunnels |
| CN109236302B (en) * | 2018-10-29 | 2020-08-14 | 中铁五局集团有限公司 | Variable section excavation trolley in tunnel |
| CN109236302A (en) * | 2018-10-29 | 2019-01-18 | 中铁五局集团成都工程有限责任公司 | A kind of tunnel variable section excavation trolley |
| CN109488327A (en) * | 2018-12-11 | 2019-03-19 | 成都大学 | A kind of tunnel rack |
| CN109826655A (en) * | 2019-02-28 | 2019-05-31 | 黄河水利职业技术学院 | A kind of construction of hydro project support safety protective device |
| CN109826655B (en) * | 2019-02-28 | 2020-06-23 | 黄河水利职业技术学院 | Hydraulic engineering construction is with supporting safety arrangement |
| CN110145314A (en) * | 2019-05-10 | 2019-08-20 | 中建隧道建设有限公司 | A kind of method that the tall and big Core Soil of extra-large cross-section bored tunnel is removed |
| CN110500113A (en) * | 2019-09-20 | 2019-11-26 | 中铁二局第二工程有限公司 | A kind of micro- bench excavation combination rack in tunnel and the micro- bench excavation method in tunnel |
| CN111594179A (en) * | 2020-05-06 | 2020-08-28 | 中铁隆工程集团有限公司 | One-step forming construction method for excavation of large-section arch cover of underground excavated station of subway |
| CN111594179B (en) * | 2020-05-06 | 2022-05-13 | 中铁隆工程集团有限公司 | One-step forming construction method for excavation of large-section arch cover of underground excavated station of subway |
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