CN113236262A - Cantilever tunneling machine tunnel transverse passage top-lifting swivel construction method - Google Patents
Cantilever tunneling machine tunnel transverse passage top-lifting swivel construction method Download PDFInfo
- Publication number
- CN113236262A CN113236262A CN202110728636.8A CN202110728636A CN113236262A CN 113236262 A CN113236262 A CN 113236262A CN 202110728636 A CN202110728636 A CN 202110728636A CN 113236262 A CN113236262 A CN 113236262A
- Authority
- CN
- China
- Prior art keywords
- pilot tunnel
- tunnel
- cantilever
- excavated
- intermediate wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010276 construction Methods 0.000 title claims abstract description 34
- 230000005641 tunneling Effects 0.000 title claims abstract description 15
- 239000002002 slurry Substances 0.000 claims description 30
- 239000006260 foam Substances 0.000 claims description 29
- 238000009412 basement excavation Methods 0.000 claims description 28
- 238000005553 drilling Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 238000005192 partition Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 5
- 239000004567 concrete Substances 0.000 claims description 2
- 239000002360 explosive Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011378 shotcrete Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
-
- 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- 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
- E21D9/10—Making by using boring or cutting machines
-
- 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)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to the field of tunnel construction, in particular to a cantilever tunneling machine tunnel transverse passage top-lifting swivel construction method, which comprises the following steps: s1, excavating a small pilot tunnel in the first direction of the second pilot tunnel in the top-picking channel by the cantilever excavator; s2, the cantilever excavator backs into the small pilot tunnel in the first direction of the second pilot tunnel, and the second direction part of the second pilot tunnel is excavated; s3, the cantilever excavator backs into the second direction hole of the second pilot tunnel, and the rest part of the first direction of the second pilot tunnel is excavated; s4, the cantilever excavator backs into the second pilot tunnel, and a small pilot tunnel is excavated towards the first pilot tunnel forwards; s5, the cantilever excavator backs into the small pilot tunnel of the first pilot tunnel, and a fourth direction part of the first pilot tunnel is excavated; and S6, the cantilever excavator backs into the fourth direction of the first pilot tunnel, and the rest part of the first pilot tunnel in the third direction is excavated. The technical problem that the cantilever excavator in the prior art can not turn and excavate under narrow top-picking channel and 90-degree turning environment is solved.
Description
Technical Field
The invention relates to the field of tunnel construction, in particular to a cantilever tunneling machine tunnel transverse passage top-lifting swivel construction method.
Background
In the construction of urban subway tunnels, complex construction environments are often encountered, for example, the surrounding environment is complex, and surrounding buildings such as government buildings, residential buildings, gardens, and buildings are densely covered, so in the tunnel construction, in order to reduce the influence on the surrounding environment, the construction is generally performed in a non-explosive excavation manner.
The construction method of the crushing head is a method of non-blasting excavation, but if the rock formation is too hard, the excavation efficiency is extremely low, and therefore the construction method using the crushing head is not practical.
The water mill drill construction mode is a non-blasting excavation mode, but new equipment is needed, the flow is complex, the cost is high, the excavation efficiency is not high, and therefore the construction mode using the water mill drill is unrealistic.
The cantilever excavator excavation is a common construction mode in the non-explosive excavation construction, and due to the self channel distribution design of a subway station, the current construction mode usually has the following problems: after the underground excavation station jacking section is successfully excavated by the cantilever excavator in the subway station construction channel, the narrow jacking channel, the jacking channel and the pilot tunnel are 90 degrees, meanwhile, the underground excavation tunnel operation space is narrow, and the cantilever excavator is huge in body, so that the cantilever excavator cannot excavate the pilot tunnel 90 degrees in the jacking channel, and the challenge is caused to site construction. If the heading machine forcibly turns and excavates the pilot tunnel from the top-raising channel, a large area of a wall body on the pilot tunnel is excavated and damaged, and the safety of the pilot tunnel is seriously affected.
Disclosure of Invention
The invention aims to provide a top-raising and rotating construction method for a tunnel transverse passage of a cantilever excavator, which aims to solve the technical problem that the cantilever excavator in the prior art cannot turn and excavate in a narrow top-raising passage and a 90-degree turning environment.
In order to achieve the purpose, the invention adopts the following technical scheme: a cantilever excavator tunnel transverse passage top-lifting swivel construction method is used for completing excavation of a first pilot tunnel and a second pilot tunnel which are arranged in parallel, and comprises the following steps:
s1, obliquely excavating a small pilot tunnel towards the first direction of the second pilot tunnel in the top-picking channel by the cantilever excavator, and cutting off the inner wall part of the second pilot tunnel close to the end part of the top-picking channel in the excavating process;
s2, the cantilever excavator backs into a small pilot tunnel in the first direction of the second pilot tunnel, after the excavator is straightened, the second direction part of the second pilot tunnel is excavated, and the first direction is opposite to the second direction;
s3, the cantilever excavator backs into the excavated second direction hole of the second pilot tunnel, excavates the rest part of the second pilot tunnel in the first direction, and excavates the rest part of the second pilot tunnel in the first direction;
s4, the cantilever excavator backs into the second pilot tunnel which is excavated, a small pilot tunnel is obliquely excavated towards the first pilot tunnel, and the inner wall part of the first pilot tunnel, which is close to the end part of the top-picking channel, is cut off in the excavating process; defining a small pilot tunnel of the pilot tunnel as a third direction part of the pilot tunnel;
s5, the cantilever excavator backs into the small pilot tunnel of the first pilot tunnel which is excavated, a fourth direction part of the first pilot tunnel is excavated, and the third direction is opposite to the fourth direction;
s6, the cantilever excavator backs into the excavated fourth-direction hole of the first pilot tunnel, excavates the rest part of the first pilot tunnel in the third direction, and excavates the rest part of the first pilot tunnel in the third direction.
The principle and the advantages of the scheme are as follows: through the scheme, the cantilever heading machine can normally dig in a narrow top-raising channel and in a 90-degree turning environment, and through the six-step excavation scheme, the scheme is safe to implement, high in work efficiency and small in overexcavation and damages to the inner wall of the end part of the first pilot tunnel and the inner wall of the end part of the second pilot tunnel are small. Compared with other station sections which are also adopted for non-explosive underground excavation, the construction channel enters the station turning section, the time for excavating and centering the cantilever tunneling machine exceeds one month, the time for implementing the scheme is only about 5-10 days, the cantilever tunneling machine is successfully turned into the station main line construction of the first pilot tunnel and the second pilot tunnel, the construction of the non-explosive excavation tunnel around the complex environment becomes possible, and the normal propulsion of the excavation of the subway station is ensured under the conditions of tight construction period and high pressure.
Preferably, as an improvement, the first direction is the large mileage direction of the second pilot tunnel, and the second direction is the small mileage direction of the second pilot tunnel; the third direction is the small mileage direction of the first pilot tunnel, and the fourth direction is the large mileage direction of the first pilot tunnel. Therefore, the tunneling direction of the cantilever tunneling machine is reasonable.
Preferably, as an improvement, the stands are required in each of S2, S3, S5 and S6. Therefore, the tunnel construction is safer through the vertical frame support.
Preferably, as a modification, the boom miner is model CRT 300A.
Preferably, as an improvement, after the excavation of the first pilot tunnel and the second pilot tunnel is finished, the filling operation is carried out on the positions of the middle partition wall, which are cut off at the end parts. From this, through filling up the position that the tip of mid-partition wall was cut off, can guarantee the firm stable strength of mid-partition wall, guarantee the security.
Preferably, as an improvement, the filling operation includes the following steps:
A. selecting two limiting plates, wherein the limiting plates are provided with a plurality of through holes; arranging two limiting plates on two sides of a position, where the end part of the intermediate wall is cut off, wherein the side surfaces of the limiting plates are attached to the outer side surface of the intermediate wall, the two limiting plates are connected in an L shape, and the intermediate wall and the two limiting plates form a filling area;
B. using a drilling machine, drilling a plurality of jacks on the partition wall through the through holes by a drill bit of the drilling machine, wherein the depth of each jack is equal to the depth of each jack until the drilling machine abuts against the outer side surface of the limiting plate;
C. taking down the two limit plates, and inserting a connecting pipe into the jack on the intermediate wall;
D. two foam boards are arranged on two sides of the cut-off part at the end part of the intermediate wall, the outer side surfaces of the foam boards are flush with the outer side surface of the intermediate wall, and the connecting pipe is inserted into the foam boards;
E. two limiting plates are arranged on two sides of the position of the end part of the intermediate wall, which is cut off, the side surfaces of the limiting plates are attached to the outer side surface of the intermediate wall, the side surfaces of the limiting plates are attached to the side surfaces of the foam boards, the two limiting plates are connected in an L shape, and the intermediate wall and the two limiting plates form a filling area;
F. filling slurry or concrete into the filling area;
G. after the slurry is preliminarily solidified, sequentially removing the limiting plate and the foam plate;
H. and spraying the removed part of the foam board until the surface of the sprayed slurry is flush with the outer side surface of the intermediate wall.
When this scheme of adoption, following beneficial effect has: 1. in step A and step B, the limiting plate plays the drill bit and drills spacing effect on the mid wall, in the drilling process, when rig and limiting plate offset, stop drilling like this, thereby the bottom of having guaranteed every jack on the mid wall is equal to the distance between the limiting plate, guaranteed like this that the connecting pipe can just insert in the jack, the tip that a plurality of connecting pipes are located the mid wall outside can be located the coplanar, the bottom of having avoided the jack is inconsistent and the tip that leads to the connecting pipe to be located the mid wall outside is not on the coplanar to the distance between the limiting plate, be convenient for make the surperficial level of whitewashing in the H step. 2. In the step E and the step F, the two limiting plates play a role in limiting the slurry and limit the slurry in the filling area, so that the scraped part of the intermediate wall is filled. After the slurry is filled, the connecting pipe is positioned in the slurry, and the connecting pipe plays a role of a reinforcing steel bar, so that the slurry is filled more firmly and stably. 3. When filling mud in this scheme, the cystosepiment is located between limiting plate and the mud, and the cystosepiment is kept apart mud and limiting plate like this, and the limiting plate can not adhere on mud for when follow-up limiting plate of demolising, the limiting plate is pulled down from mud easily. Further, the foam board is more easily damaged than a board made of another material, and even if the foam board is adhered to the slurry before the slurry is sprayed, the foam board can be removed from the slurry by damaging the foam board. 4. In addition, after the foam board is taken off from the slurry, the gap of the foam board thickness can be formed on the surface of the formed slurry, the gap is filled by spraying slurry, and the surface of the filling part of the intermediate wall is flatter by spraying slurry. 5. Through in this scheme, fill the position that mid-board partition end was cut off, can guarantee the firm stable strength of mid-board partition, guarantee the security. Meanwhile, the filling mode of the scheme is adopted, namely the filling mode is adopted, so that the filling method is suitable for filling of large damaged parts, and the filling efficiency is high.
Drawings
Fig. 1 is a schematic top view of the excavation at S1 in example 1.
Fig. 2 is a schematic top view of the excavation in S2 in example 1.
Fig. 3 is a schematic top view of the excavation in S3 in example 1.
Fig. 4 is a schematic top view of the excavation at S4 in example 1.
Fig. 5 is a schematic top view of the excavation at S5 in example 1.
Fig. 6 is a schematic top view of the excavation in S6 in example 1.
Fig. 7 is a schematic top view of the intermediate wall, the retainer plate and the foam board before slurry filling.
Fig. 8 is a side view of the limiting plate.
Fig. 9 is a front view of the stopper plate.
Fig. 10 is a schematic top view of the intermediate wall and the foam board in example 2 after the slurry is filled and the position of the position limiting plate is removed.
FIG. 11 is a schematic top view of the foam board of example 2 after removal and spraying.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: limiting plate 1, first bracing piece 2, second bracing piece 3, connecting pipe 4, cystosepiment 5, mud pouring opening 6, bottom plate 7, bolt 8, through-hole 9, whitewashing layer 10.
Example 1
A cantilever excavator tunnel transverse passage top-lifting swivel construction method is used for completing excavation of a first pilot tunnel and a second pilot tunnel which are arranged in parallel, and comprises the following steps:
s1, as shown in fig. 1, the cantilever excavator excavates a small pilot tunnel (small pilot tunnel refers to a tunnel that is not excavated) to the lower right of the first direction of the second pilot tunnel in the ram tunnel (vertical tunnel in the figure), during the excavation, the inner wall of the second pilot tunnel on the intermediate wall near the end of the ram tunnel is cut off, the first direction in this embodiment is the right side in fig. 1, and is also the large mileage direction; the intermediate wall is a wall between the first pilot tunnel and the second pilot tunnel;
s2, referring to the figure 2, firstly backing the cantilever excavator into the small pilot tunnel in the first direction of the second pilot tunnel, righting the excavator, then excavating the second direction part of the second pilot tunnel by the cantilever excavator in the excavating direction, and performing vertical support in the excavating process; the second direction in this embodiment refers to the left side in fig. 2, which is also the small mileage direction;
s3, as shown in figure 3, the cantilever excavator firstly backs into the hole in the second direction of the second pilot tunnel which is excavated, then excavates the rest part in the first direction of the second pilot tunnel towards the excavating direction, namely, excavates the first direction of the second pilot tunnel, and carries out vertical support in the excavating process;
s4, as shown in figure 4, the cantilever excavator backs into the hole in the first direction of the excavated second pilot tunnel, a small pilot tunnel is excavated towards the direction of the first pilot tunnel towards the left front, and the inner wall part of the end part of the first pilot tunnel on the partition wall, which is close to the top-picking channel, is cut off in the excavating process; defining the small pilot tunnel of the pilot tunnel as a third direction part of the pilot tunnel, namely the left side direction, namely the small mileage direction of the pilot tunnel;
s5, referring to the graph shown in FIG. 5, the cantilever excavator backs to the small pilot tunnel of the first pilot tunnel which is excavated, excavates the fourth direction part of the first pilot tunnel and carries out vertical support in the excavating process; the fourth direction is the right side direction, namely the major mileage direction of the pilot tunnel I;
and S6, as shown in figure 6, the cantilever excavator backs into the hole in the fourth direction of the excavated first pilot tunnel, excavates the rest part of the first pilot tunnel in the third direction, namely, excavates the rest part in the third direction, and carries out vertical support in the excavation process.
The model of the cantilever excavator in this embodiment is CRT300A, and the cantilever excavator size: the length is 13.5m (including a slag removing shovel plate), the width is 3.6m, and the height is 4m (including an operation bin). The tunneling gun head exceeds the slag removing shovel plate by 1m, and swings left and right to exceed the slag removing shovel plate by 1m respectively.
According to the statistics of the tunneling circulation records, the V-level surrounding rock (sandstone and mudstone) is excavated by 10-11 cubic meters per hour, and the IV-level surrounding rock (sandstone) is excavated by 5-6 cubic meters per hour. In the excavation process of the upper section of the subway station, a CRT300A type cantilever excavator excavates a support of 70m (40 m) per month2Cross section). According to the field construction condition, when the excavation height is not more than 70m2 cross sections of 7m, the comprehensive efficiency of excavation and support can reach the highest.
Example 2
In this embodiment, after the first pilot tunnel and the second pilot tunnel are excavated, the portions of the intermediate wall where the end portions are cut off are filled.
Taking the part of the second pilot tunnel with the end part being cut off as an example, the filling operation comprises the following steps:
A. referring to fig. 7-9, two limiting plates 1 are selected, each limiting plate 1 is provided with a plurality of through holes 9, each limiting plate 1 is provided with a supporting mechanism, and the top of each limiting plate 1 is provided with a slurry pouring port 6; referring to fig. 7, two limiting plates 1 are disposed at both sides of a portion of the intermediate wall where the end portion of the intermediate wall is cut away, the side surfaces of the limiting plates 1 are attached to the outer side surface of the intermediate wall, the two limiting plates 1 are connected to form an "L" shape, and the intermediate wall and the two limiting plates 1 form a filling area.
B. Using a drilling machine, drilling a plurality of jacks on the middle partition wall by a drill bit of the drilling machine through the through holes 9 on the limiting plate 1 in sequence, wherein the depth of each jack is equal to the abutting distance between the drilling machine and the outer side surface of the limiting plate 1; because the depths of the plurality of insertion holes are all until the drilling machine is abutted against the outer side surface of the limiting plate 1, the distance from the bottom of each insertion hole to the limiting plate 1 is equal.
C. Taking down the two limit plates 1, and inserting a connecting pipe 4 into an insertion hole on the intermediate wall; a grouting channel is arranged on the connecting pipe 4, and a grout outlet is arranged on the side wall of the connecting pipe 4.
D. Slurry is injected into the connecting pipe 4 through the grouting channel, the slurry flows out of the slurry outlet hole, the flowing slurry is located in the jack, so that the connecting pipe 4 is connected with the jack, and the connecting pipe 4 is fixed on the partition wall; as shown in fig. 7, two foam plates 5 are provided on both sides of the cut-off portion of the end portion of the intermediate wall, the outer side surfaces of the foam plates 5 are flush with the outer side surface of the intermediate wall, and the connection pipe 4 is inserted into the foam plates 5.
E. Referring to fig. 7, two limiting plates 1 are arranged on two sides of the cut-off part of the end part of the intermediate wall again, the side surfaces of the limiting plates 1 are attached to the outer side surface of the intermediate wall, the side surfaces of the limiting plates 1 are attached to the side surfaces of the foam plates 5, the two limiting plates 1 are connected in an L shape, and the intermediate wall and the two limiting plates 1 form a filling area; simultaneously, the two limiting plates 1 are supported and fixed through the supporting mechanism, and the limiting plates 1 are prevented from moving.
F. And filling slurry into the filling area through a slurry filling port 6 of the limiting plate 1, wherein the filled slurry is positioned between the foam board 5 and the middle partition wall, and the foam board 5 separates the slurry from the limiting plate 1.
G. After the slurry is primarily solidified, the limiting plate 1 is firstly disassembled to obtain the structure shown in fig. 10, and then the foam removing plate is disassembled.
H. As shown in fig. 11, the portion where the foam sheet 5 is removed is gunited using a gun to form the gunite layer 10 until the surface of the gunite layer 10 is flush with the outer side surface of the intermediate wall.
Example 3
Referring to fig. 7 to 9, the supporting mechanism in this embodiment includes a bottom plate 7, a first supporting rod 2 and a second supporting rod 3, the length of the first supporting rod 2 is greater than that of the second supporting rod 3, the top end of the first supporting rod 2 and the top end of the second supporting rod 3 are both rotatably connected to the limiting plate 1 through a pin, and the top end of the first supporting rod 2 is higher than that of the second supporting rod 3. The bottom plate 7 is detachably connected and fixed on the ground through a bolt 8, and the bottom of the first supporting rod 2 and the bottom of the second supporting rod 3 are fixed on the bottom plate 7 through fixing pins. From this setting, realized that the support to limiting plate 1 is fixed, limiting plate 1 can not empty under the support of first bracing piece 2 and second bracing piece 3 to can carry out stable spacing to the packing of mud. Between first bracing piece 2, limiting plate 1 and the bottom plate 7, all form stable triangle-shaped between second bracing piece 3, limiting plate 1 and the bottom plate 7, the structure of support is more stable.
The foregoing is merely an example of the present invention and common general knowledge in the art of designing and/or characterizing particular aspects and/or features is not described in any greater detail herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (6)
1. A cantilever excavator tunnel transverse passage top-lifting swivel construction method is used for completing excavation of a first pilot tunnel and a second pilot tunnel which are arranged in parallel, and is characterized in that: the method comprises the following steps:
s1, obliquely excavating a small pilot tunnel towards the first direction of the second pilot tunnel in the top-picking channel by the cantilever excavator, and cutting off the inner wall part of the second pilot tunnel close to the end part of the top-picking channel in the excavating process;
s2, the cantilever excavator backs into a small pilot tunnel in the first direction of the second pilot tunnel, and after the excavator is straightened, a second direction part of the second pilot tunnel is excavated, wherein the first direction is opposite to the second direction;
s3, the cantilever excavator backs into the excavated second direction hole of the second pilot tunnel, excavates the rest part of the second pilot tunnel in the first direction, and excavates the rest part of the second pilot tunnel in the first direction;
s4, the cantilever excavator backs into the second pilot tunnel which is excavated, a small pilot tunnel is obliquely excavated towards the first pilot tunnel, and the inner wall part of the first pilot tunnel, which is close to the end part of the top-picking channel, is cut off in the excavating process; defining a small pilot tunnel of the pilot tunnel as a third direction part of the pilot tunnel;
s5, the cantilever excavator backs into the small pilot tunnel of the first pilot tunnel which is already excavated, and excavates the fourth direction part of the first pilot tunnel, wherein the third direction is opposite to the fourth direction;
s6, the cantilever excavator backs into the excavated fourth-direction hole of the first pilot tunnel, excavates the rest part of the first pilot tunnel in the third direction, and excavates the rest part of the first pilot tunnel in the third direction.
2. The cantilever tunneling machine tunnel transverse passage top-lifting swivel construction method according to claim 1, characterized in that: the first direction is the large mileage direction of the second pilot tunnel, and the second direction is the small mileage direction of the second pilot tunnel; the third direction is the small mileage direction of the first pilot tunnel, and the fourth direction is the large mileage direction of the first pilot tunnel.
3. The cantilever tunneling machine tunnel transverse passage top-lifting swivel construction method according to claim 2, characterized in that: the S2, S3, S5 and S6 all need to be supported by vertical frames.
4. The cantilever tunneling machine tunnel transverse passage top-lifting swivel construction method according to claim 1, characterized in that: the boom miner is model CRT 300A.
5. The cantilever tunneling machine tunnel transverse passage top-lifting swivel construction method according to claim 1, characterized in that: and after the first pilot tunnel and the second pilot tunnel are excavated, filling the positions of the end parts of the intermediate wall, which are cut off.
6. The cantilever tunneling machine tunnel transverse passage top-lifting swivel construction method according to claim 5, characterized in that: the filling operation comprises the following steps:
A. selecting two limiting plates, wherein the limiting plates are provided with a plurality of through holes; arranging two limiting plates on two sides of a position, where the end part of the intermediate wall is cut off, wherein the side surfaces of the limiting plates are attached to the outer side surface of the intermediate wall, the two limiting plates are connected in an L shape, and the intermediate wall and the two limiting plates form a filling area;
B. using a drilling machine, drilling a plurality of jacks on the partition wall through the through holes by a drill bit of the drilling machine, wherein the depth of each jack is equal to the depth of each jack until the drilling machine abuts against the outer side surface of the limiting plate;
C. taking down the two limit plates, and inserting a connecting pipe into the jack on the intermediate wall;
D. two foam boards are arranged on two sides of the cut-off part at the end part of the intermediate wall, the outer side surfaces of the foam boards are flush with the outer side surface of the intermediate wall, and the connecting pipe is inserted into the foam boards;
E. two limiting plates are arranged on two sides of the position of the end part of the intermediate wall, which is cut off, the side surfaces of the limiting plates are attached to the outer side surface of the intermediate wall, the side surfaces of the limiting plates are attached to the side surfaces of the foam boards, the two limiting plates are connected in an L shape, and the intermediate wall and the two limiting plates form a filling area;
F. filling slurry or concrete into the filling area;
G. after the slurry is preliminarily solidified, sequentially removing the limiting plate and the foam plate;
H. and spraying the removed part of the foam board until the surface of the sprayed slurry is flush with the outer side surface of the intermediate wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110728636.8A CN113236262B (en) | 2021-06-29 | 2021-06-29 | Cantilever tunneling machine tunnel transverse channel roof-picking swivel construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110728636.8A CN113236262B (en) | 2021-06-29 | 2021-06-29 | Cantilever tunneling machine tunnel transverse channel roof-picking swivel construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113236262A true CN113236262A (en) | 2021-08-10 |
| CN113236262B CN113236262B (en) | 2023-08-15 |
Family
ID=77141161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110728636.8A Active CN113236262B (en) | 2021-06-29 | 2021-06-29 | Cantilever tunneling machine tunnel transverse channel roof-picking swivel construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113236262B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990042715A (en) * | 1997-11-27 | 1999-06-15 | 이병철 | Mobile drilling device for tunnel |
| JP2002227579A (en) * | 2001-01-26 | 2002-08-14 | Hazama Gumi Ltd | Drilling positioning method by laser beam |
| JP2009013603A (en) * | 2007-07-02 | 2009-01-22 | Shimizu Corp | Tunnel construction method |
| KR20100003061A (en) * | 2008-06-30 | 2010-01-07 | (주)엘티엠 | Tunneling method and apparatus for blasting of enlargement and construction of concrete lining carried out simultaneously during excavation of pilot tunnel by tbm |
| CN103527204A (en) * | 2013-11-06 | 2014-01-22 | 中铁第四勘察设计院集团有限公司 | Wall-first arch-second cross middle partition wall tunnel construction method |
| CN104929649A (en) * | 2015-06-17 | 2015-09-23 | 大连市市政设计研究院有限责任公司 | Tunnel transverse cave-to-master cave top brushing construction method and top brushing structure |
| CN206538787U (en) * | 2017-01-24 | 2017-10-03 | 中国建筑第二工程局有限公司 | Early-dismantling assembly type pipe gallery aluminum mould trolley system for integrally pouring wall and top plate |
| CN109403985A (en) * | 2018-10-18 | 2019-03-01 | 中铁十二局集团有限公司 | The gate-type of pole weak broken wall rock layer is caunched engineering method |
-
2021
- 2021-06-29 CN CN202110728636.8A patent/CN113236262B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990042715A (en) * | 1997-11-27 | 1999-06-15 | 이병철 | Mobile drilling device for tunnel |
| JP2002227579A (en) * | 2001-01-26 | 2002-08-14 | Hazama Gumi Ltd | Drilling positioning method by laser beam |
| JP2009013603A (en) * | 2007-07-02 | 2009-01-22 | Shimizu Corp | Tunnel construction method |
| KR20100003061A (en) * | 2008-06-30 | 2010-01-07 | (주)엘티엠 | Tunneling method and apparatus for blasting of enlargement and construction of concrete lining carried out simultaneously during excavation of pilot tunnel by tbm |
| CN103527204A (en) * | 2013-11-06 | 2014-01-22 | 中铁第四勘察设计院集团有限公司 | Wall-first arch-second cross middle partition wall tunnel construction method |
| CN104929649A (en) * | 2015-06-17 | 2015-09-23 | 大连市市政设计研究院有限责任公司 | Tunnel transverse cave-to-master cave top brushing construction method and top brushing structure |
| CN206538787U (en) * | 2017-01-24 | 2017-10-03 | 中国建筑第二工程局有限公司 | Early-dismantling assembly type pipe gallery aluminum mould trolley system for integrally pouring wall and top plate |
| CN109403985A (en) * | 2018-10-18 | 2019-03-01 | 中铁十二局集团有限公司 | The gate-type of pole weak broken wall rock layer is caunched engineering method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113236262B (en) | 2023-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110017144B (en) | Loess tunnel three-step construction method considering substrate reinforcement treatment | |
| CN103696784B (en) | Large-diameter long pipe curtain construction method for shallowly-buried large-span under-tunnel-passing architectural structure | |
| CN108266191B (en) | An optimized construction method for multi-arch tunnels | |
| CN110424969A (en) | It is a kind of elder generation tunnel after stand cut and cover method station construction engineering method | |
| CN107023300A (en) | A kind of use canopy, which is defended the doctrine, builds the construction method of subway station | |
| CN206888992U (en) | A kind of water-bed mine shield tunnel combination docking structure form | |
| CN110939404A (en) | Pressure relief device and pressure relief method for broken surrounding rock roof in coal mine roadway | |
| CN111472801A (en) | Construction method for passing existing line under shallow-buried underground excavation drainage gallery | |
| CN110905536A (en) | Construction method for receiving complex stratum earth pressure shield in underground excavation tunnel | |
| CN110685716A (en) | Sleeve valve pipe grouting method after boulder blasting treatment | |
| CN107165641B (en) | High inclination-angle ladder way opposite direction excavating construction method in thin layer breaking up hard rock stratum | |
| CN108798770B (en) | Construction method of gangue filling and grouting suitable for short-wall road mining horizontal working face | |
| CN101725147B (en) | Construction process of first-inserting last-jetting type steel churning pile enclosing structure under low net space | |
| CN109973115B (en) | Construction method for drainage of vault of tunnel in karst area | |
| CN109989407B (en) | Roadbed pile tube curtain supporting structure behind newly-added two-line platform of railway | |
| CN111075453A (en) | Excavation method for reducing tunnel deformation and mud inrush and water inrush | |
| CN213869864U (en) | Dig and visit cantilever crane mechanism | |
| CN105019917A (en) | Impact drilling type advanced jet grouting pipe shed construction device and construction method | |
| CN106087996B (en) | Manual digging pile construction method based on self leveling backpressure device | |
| CN113236262B (en) | Cantilever tunneling machine tunnel transverse channel roof-picking swivel construction method | |
| CN111236310B (en) | Construction method of connecting channel of existing underground structure in soft and water-rich stratum | |
| CN211008565U (en) | Hydraulic joint cutting pressure relief device for coal mine tunnel broken surrounding rock roof | |
| CN204920977U (en) | Spray tube canopy construction equipment is revolved in advance to percussion drilling formula | |
| CN109707394B (en) | A construction method for the tunnel door at the receiving end of the shield tunnel of the subway tunnel | |
| CN100593052C (en) | Open cut foundation pit supporting and protecting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |