AU2020100911A4 - Shield structure for effectively controlling ground subsidence - Google Patents
Shield structure for effectively controlling ground subsidence Download PDFInfo
- Publication number
- AU2020100911A4 AU2020100911A4 AU2020100911A AU2020100911A AU2020100911A4 AU 2020100911 A4 AU2020100911 A4 AU 2020100911A4 AU 2020100911 A AU2020100911 A AU 2020100911A AU 2020100911 A AU2020100911 A AU 2020100911A AU 2020100911 A4 AU2020100911 A4 AU 2020100911A4
- Authority
- AU
- Australia
- Prior art keywords
- shield
- skin
- grouting
- primary
- cutting surface
- 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.)
- Ceased
Links
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 12
- 238000009412 basement excavation Methods 0.000 claims description 46
- 239000002893 slag Substances 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 17
- 239000002689 soil Substances 0.000 abstract description 10
- 239000000203 mixture Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 14
- 238000004078 waterproofing Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/02—Measuring force or stress, in general by hydraulic or pneumatic means
-
- 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- 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
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
-
- 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
- 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
- E21D9/093—Control of the driving shield, e.g. of the hydraulic advancing cylinders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Disclosed is a shield structure for effectively controlling ground subsidence, including a cutterhead
assembly, a shield skin I, a shield II, an outer-skin grouting pipe, a pressure detection device and a
delivery main pipe. The cutterhead assembly is mounted at a front end of the shield skin I, and a rear
end of the shield skin I is coaxially and fixedly connected to a front end of the shield II; at the
beginning of the boring process, a ground stress in front of the shield is detected in real time by the
pressure detection device, and a propulsion power of a shield machine is adjusted in real time
according to detection values, so that the shield machine maintains a stable propulsion speed; during
the boring process, a waterproof slurry is discharged to a position where the shield skin I is connected
to the shield skin II through an grouting hole, at which time a slag is contacted and mixed with the
waterproof slurry to form a slag waterproof mixture, which is squeezed through the outside of the
shield skin II to be compact and fixed on a surface of a tunnel goaf formed after the boring by the
shield machine; then, the soil strength and waterproof treatment on the surface of the tunnel goaf are
improved, the effect of preventing ground subsidence is achieved, and the sides are smoothed as well
as reducing water seepage paths.
24
9 8
Fig. 1
2
Fig. 2
1/1
Description
9 8 Fig. 1
2
Fig. 2
1/1
Technical field
The disclosure relates to a shield structure, in particular, to a shield structure for effectively
controlling ground subsidence.
Background
At present, by improving the utilization of underground space, the ground traffic congestion and
other situations can be effectively alleviated. During the construction of underground space, due to the
constraints of urban environmental factors such as the construction site and road traffic, traditional
construction methods are difficult to apply universally. It was considered that tunnel construction has
the characteristics of high degree of automation, labor saving, fast construction speed, fast
construction speed, one-time tunnel formation, no influence by climate, controllable ground
subsidence during excavation, reducing the impact on ground structures and not affecting the water
surface traffic when excavating underwater and so on. Based on the above advantages, the shield
machines have been widely used in subway, railway, highway, municipal, hydropower and other
tunnel projects. However, since the cutterhead of the ordinary shield machine will cause greater
disturbance to the soil around the pipe during the boring process, resulting in surface subsidence; the
existing outer-skin grouting technology may improve the strength of tunnel support by grouting mixed
slag soil, but this technology needs to be performed after the shield machine performs boring,
resulting in lower efficiency. At present, there is no shield structure, which can perform grouting
during the boring process of the shield machine to make the waterproof slurry and part of the slag
produced during the boring process be mixed and extruded outside the shield skin to form a
waterproof layer outside the pipe for both improving the waterproof capacity of the tunnel support
structure and reducing the amount of slag transported to the surface during construction. Therefore,
this shield structure is to be researched in the industry.
Summary
In view of the problems in the prior art, the disclosure provides a shield structure for effectively
controlling ground subsidence, which may perform grouting during the boring process of the shield
machine for both improving the waterproof capacity of the tunnel support structure to prevent ground subsidence and reducing the amount of slag transported to the surface during construction to reduce construction cost and protect the ecological environment.
To this end, a technical solution adopted by the disclosure is: a shield structure for effectively
controlling ground subsidence, including a cutterhead assembly, a shield skin I, a shield skin II, an
outer-skin grouting pipe, a pressure detection device and a delivery main pipe, wherein the cutterhead
assembly is mounted at a front end of the shield skin I, and a rear end of the shield skin I is coaxially
and fixedly connected to a front end of the shield II;
the cutterhead assembly includes a primary excavation surface, a cutting surface and a secondary
excavation surface, the primary and secondary excavation surfaces are parallel to each other, the
primary and secondary excavation surfaces are all circular, and a circular outer diameter of the
secondary excavation surface is smaller than the circular inner diameter of the primary excavation
surface; an outer edge of the primary excavation surface is provided with an earth inlet, and the earth
inlet is located outside the shield skin I; the cutting surface is disposed between the primary
excavation surface and the secondary excavation surface, the cutting surface is a conical shape with
open ends, a large end of the cutting surface is movably connected to a circular inner wall of the
primary excavation surface, and a small end of the cutting surface is movably connected to a circular
outer edge of the secondary excavation surface; the cutting surface is mounted with a plurality of
cutters;
the pressure detection device includes two airbags and an airbag drive, the airbag drive is fixed to
a rear portion of the cutterhead assembly, and the two airbags are fixed symmetrically to the airbag
drive; the two airbags cooperate with the airbag drive to detect a ground stress in front of the shield,
and then adjust a propulsion power of the shield machine according to the ground stress;
a circle of grouting holes is disposed at a position wherein the rear end of the shield skin I is
connected to the front end of the shield skin II, and a hole distance between each of the grouting holes
is equal; the delivery main pipe and a plurality of outer-skin grouting pipes are disposed in the shield
skin II, and the number of outer-skin grouting pipes is the same as the grouting holes; one end of the
plurality of outer-skin grouting pipes communicates with the delivery main pipe, and the other end of
the plurality of outer-skin grouting pipes communicates with each of the grouting holes for outputting
a waterproof slurry to the outside of the skin.
Further, the primary excavation surface accounts for 50% to 70% of a total area of the cutterhead
assembly.
Further, the hole distance between each of the grouting holes is 5cm; a hole diameter of each of
the grouting holes is 3cm.
Further, the plurality of bit tools is inclinedly disposed on the cutting surface with an inclined
angle of 15° to 30 clockwise.
Further, the cutting surface has a depth of 0.8m to 1.1m.
Compared with the prior art, in the disclosure, with combination of the cutterhead assembly, the
shield skin I, the shield II, the outer-skin grouting pipe, the pressure detection device and the
delivery main pipe, at the beginning of the boring process, a ground stress in front of the shield is
detected in real time by the pressure detection device, and a propulsion power of a shield machine is
adjusted in real time according to detection values, so that the shield machine maintains a stable
propulsion speed; during the boring process, the slag is transported outside the shield skin I and the
shield skin II through an earth inlet, a waterproof slurry is discharged to a position where the shield
skin I is connected to the shield skin II through an grouting hole, at which time a slag is contacted and
mixed with the waterproof slurry to form a slag waterproof mixture after stirring to enter outside the
shield skin II, which is squeezed through the outside of the shield skin II to be compact and fixed on a
surface of a tunnel goaf formed after the boring by the shield machine; then, the soil strength on the
surface of the tunnel goaf are improved, so that preliminary support and waterproofing are carried out
at the same time as the tunnel is bored before the installation of the pipes to achieve the effect of
preventing surface subsidence, and the sides are smoothed such that the sides closely fit with the outer
wall of the pipe and reduces the water seepage path; at the same time, the slag is used for
waterproofing and fixing, which also reduces the amount of slag transported to the surface during the
construction process, reduces the construction cost, and protects the ecological environment.
Fig. 1 is a structural view of the disclosure;
Fig. 2 is a structural view of an airbag and an airbag drive in the disclosure.
In figures: 1-cutterhead assembly, 2-airbag drive, 3-outer-skin grouting pipe, 4-airbag, 5-primary excavation surface, 6-secondary excavation surface, 7-delivery main pipe, 8-grouting hole, 9-earth inlet, 10-cutting surface.
Detailed description
The disclosure will be further elaborated hereafter.
As shown in Figs. 1 and 2, the disclosure includes a cutterhead assembly 1, a shield skin I, a
shield skin II, an outer-skin grouting pipe 3, a pressure detection device and a delivery main pipe 7,
wherein the cutterhead assembly 1is mounted at a front end of the shield skin I, and a rear end of the
shield skin I is coaxially and fixedly connected to a front end of the shield II;
the cutterhead assembly 1 includes a primary excavation surface 5, a cutting surface 10 and a
secondary excavation surface 6, the primary and secondary excavation surfaces 5 and 6 are parallel to
each other, the primary and secondary excavation surfaces 5 and 6 are all circular, and a circular outer
diameter of the secondary excavation surface 6 is smaller than the circular inner diameter of the
primary excavation surface 5; an outer edge of the primary excavation surface 5 is provided with an
earth inlet 9, and the earth inlet 9 is located outside the shield skin I; the cutting surface 10 is disposed
between the primary excavation surface 5 and the secondary excavation surface 6, the cutting surface
is a conical shape with open ends, a large end of the cutting surface 10 is movably connected to a
circular inner wall of the primary excavation surface 5, and a small end of the cutting surface 10 is
movably connected to a circular outer edge of the secondary excavation surface 6; the cutting surface
is mounted with a plurality of cutters;
the pressure detection device includes two airbags 4 and an airbag drive 2, the airbag drive 2 is
fixed to a rear portion of the cutterhead assembly 1, and the two airbags 4 are fixed symmetrically to
the airbag drive 2; the two airbags 4 cooperate with the airbag drive 2 to detect a ground stress in front
of the shield, and then adjust a propulsion power of the shield machine according to the ground stress;
a circle of grouting holes 8 is disposed at a position wherein the rear end of the shield skin I is
connected to the front end of the shield skin II, and a hole distance between each of the grouting holes
8 is equal; the delivery main pipe 7 and a plurality of outer-skin grouting pipes 3 are disposed in the
shield skin II, and the number of outer-skin grouting pipes 3 is the same as the grouting holes 8; one
end of the plurality of outer-skin grouting pipes 3 communicates with the delivery main pipe 7, and the other end of the plurality of outer-skin grouting pipes 3 communicates with each of the grouting holes 8 for outputting a waterproof slurry to the outside of the skin.
Further, the primary excavation surface 5 accounts for 50% to 70% of a total area of the
cutterhead assembly 1; the plurality of bit tools are inclinedly disposed on the horizontal cutting
surface 10 with an inclined angle of 150 to 30° clockwise; the cutting surface 10 has a depth of 0.8m
to 1.1m. With this arrangement in structure, when the shield machine is in boring process, the rock and
soil center body may be kept to ensure the support of the central core soil to the soil body of the shield
top, reduce the external environment damage to the shield machine, and reduce the working
propulsion resistance.
Further, the hole distance between each of the grouting holes 8 is 5cm; a hole diameter of each of
the grouting holes 8 is 3cm. It's best to use this size. If the hole distance of the grouting holes 8 is too
large, the slag and the waterproof slurry may not be mixed and stirred sufficiently, and if the hole
distance of the grouting holes 8 is too small, the passage of the slag may be affected; and the hole
diameter needs to match the access amount of the shield machine.
When the disclosure is mounted to the shield machine with the primary excavation surface 5 at
the forefront (outermost) of the shield machine, the primary excavation surface 5 touches the soil
while the surrounding area being under pressure that is transmitted to the pressure detection device
through the secondary excavation surface 6 during the excavation process of the shield machine, and
the airbags 4 cooperate with the airbag drive 2 to detect a ground stress in front of the shield and then
to adjust a propulsion power of the shield machine according to the ground stress, wherein the whole
adjustment process is a common art (i.e., through the method of image pre-processing analysis, the
soil layer structure is analyzed and processed, verified by example analysis, and solved with the help
of matlab computing platform programming, then the air pressure data of the airbag is fed back to the
system for aggregation, and the mathematical model of the feedback data component is analyzed, and
then the operation deviation of the shield device during the construction process is determined through
parameter calculation); if the ground stress is large, the propulsion power of the shield machine is
increased, and if the ground stress is small, the propulsion power of the shield machine is reduced, so
that the speed of the shield machine may be kept stable during the boring process; during the boring
process of the tunnel, the slag formed by excavation of the shield enters between the outside of shield skin I and the surrounding rock and soil body through the earth inlet 9, and as the excavation progresses, the slag moves to the outside of shield skinII while injecting the waterproof slurry, which is discharged from each of the grouting holes 8 through each of the outer-skin grouting pipes 3, from the end of the delivery main pipe 7, and then, the slag and the waterproof slurry contact and mix with each other when the slag reaches the position where the shield skin I is connected to the shield skin II, and as the shield continues to excavate and rotate, the above two mix with each other and enter the outside of shield skin, and then the mixture of the slag and the slurry is extruded from the outside of the shield skin II to make it compact and fixed on the surface of the goaf formed after excavation by the shield machine; the soil strength on the surface of the tunnel goaf are improved, so that preliminary support and waterproofing are carried out at the same time as the tunnel is bored before the installation of the pipes to achieve the effect of preventing surface subsidence, and the sides are smoothed such that the sides closely fit with the outer wall of the pipe and reduces the water seepage path; at the same time, the slag is used for waterproofing and fixing, which also reduces the amount of slag transported to the surface during the construction process, reduces the construction cost, and protects the ecological environment.
Claims (5)
1. A shield structure for effectively controlling ground subsidence, comprising a cutterhead
assembly, a shield skin I, a shield skinII, an outer-skin grouting pipe, a pressure detection device and
a delivery main pipe, wherein the cutterhead assembly is mounted at a front end of the shield skin I,
and a rear end of the shield skin I is coaxially and fixedly connected to a front end of the shield II;
the cutterhead assembly comprises a primary excavation surface, a cutting surface and a
secondary excavation surface, the primary and secondary excavation surfaces are parallel to each other,
the primary and secondary excavation surfaces are all circular, and a circular outer diameter of the
secondary excavation surface is smaller than the circular inner diameter of the primary excavation
surface; an outer edge of the primary excavation surface is provided with an earth inlet, and the earth
inlet is located outside the shield skin I; the cutting surface is disposed between the primary
excavation surface and the secondary excavation surface, the cutting surface is a conical shape with
open ends, a large end of the cutting surface is movably connected to a circular inner wall of the
primary excavation surface, and a small end of the cutting surface is movably connected to a circular
outer edge of the secondary excavation surface; the cutting surface is mounted with a plurality of
cutters;
the pressure detection device comprises two airbags and an airbag drive, the airbag drive is fixed
to a rear portion of the cutterhead assembly, and the two airbags are fixed symmetrically to the airbag
drive; the two airbags cooperate with the airbag drive to detect a ground stress in front of the shield,
and then adjust a propulsion power of the shield machine according to the ground stress;
a circle of grouting holes is disposed at a position wherein the rear end of the shield skin I is
connected to the front end of the shield skin II, and a hole distance between each of the grouting holes
is equal; the delivery main pipe and a plurality of outer-skin grouting pipes are disposed in the shield
skin II, and the number of outer-skin grouting pipes is the same as the grouting holes; one end of the
plurality of outer-skin grouting pipes communicates with the delivery main pipe, and the other end of
the plurality of outer-skin grouting pipes communicates with each of the grouting holes for outputting
a waterproof slurry to the outside of the skin.
2. The shield structure for effectively controlling ground subsidence according to claim 1,
wherein the primary excavation surface accounts for 50% to 70% of a total area of the cutterhead
assembly.
3. The shield structure for effectively controlling ground subsidence according to claim 1,
wherein the hole distance between each of the grouting holes is 5cm; a hole diameter of each of the
grouting holes is 3cm.
4. The shield structure for effectively controlling ground subsidence according to claim 1,
wherein the plurality of cutters are inclinedly disposed on the cutting surface with an inclined angle of
150 to 30° clockwise.
5. The shield structure for effectively controlling ground subsidence according to claim 1, wherein the
cutting surface has a depth of 0.8m to 1.1m.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010386754.0A CN111350515A (en) | 2020-05-09 | 2020-05-09 | Shield head structure for effectively controlling surface settlement |
| CN2020103867540 | 2020-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2020100911A4 true AU2020100911A4 (en) | 2020-07-09 |
Family
ID=71193529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020100911A Ceased AU2020100911A4 (en) | 2020-05-09 | 2020-06-01 | Shield structure for effectively controlling ground subsidence |
Country Status (3)
| Country | Link |
|---|---|
| CN (2) | CN111350515A (en) |
| AU (1) | AU2020100911A4 (en) |
| LU (1) | LU101977B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113108727A (en) * | 2021-04-13 | 2021-07-13 | 中铁工程装备集团有限公司 | Shield machine and detection system for sensing central region deformation of cutter head of shield machine |
| CN113137239A (en) * | 2021-05-15 | 2021-07-20 | 中铁十一局武汉重型装备有限公司 | Shield cutter head face reinforcing method and grouting reinforcing device used for method |
| CN113266376A (en) * | 2021-05-12 | 2021-08-17 | 济南轨道交通集团有限公司 | Model test device for simulating shield approaching underground structure micro-disturbance construction |
| CN113685186A (en) * | 2021-08-09 | 2021-11-23 | 北京城建轨道交通建设工程有限公司 | Tunneling method for geological drilling in shield underpass water area |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350515A (en) * | 2020-05-09 | 2020-06-30 | 徐州工程学院 | Shield head structure for effectively controlling surface settlement |
| CN111365014A (en) * | 2020-05-09 | 2020-07-03 | 徐州工程学院 | Shield machine special-shaped cutter head capable of effectively improving tunneling efficiency |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3595465B2 (en) * | 1999-06-29 | 2004-12-02 | 鹿島建設株式会社 | Shield machine, tunnel construction method and tunnel |
| CN205477628U (en) * | 2015-10-28 | 2016-08-17 | 广州建恒机电设备安装有限公司 | Biliquid thick liquid device is annotated in step in shield driving |
| CN105257310A (en) * | 2015-11-04 | 2016-01-20 | 上海大学 | Heading face advance protective type shield |
| CN208845229U (en) * | 2018-10-17 | 2019-05-10 | 中铁隧道局集团有限公司 | Big cross section rectangular top pipe tunnel portal sealing device |
| CN109630144B (en) * | 2018-12-05 | 2020-07-07 | 中交二航局第三工程有限公司 | Method for replacing two shield tail brush rings of shield tunneling machine for water-rich stratum tunnel construction |
| CN111350515A (en) * | 2020-05-09 | 2020-06-30 | 徐州工程学院 | Shield head structure for effectively controlling surface settlement |
-
2020
- 2020-05-09 CN CN202010386754.0A patent/CN111350515A/en active Pending
- 2020-06-01 AU AU2020100911A patent/AU2020100911A4/en not_active Ceased
- 2020-07-09 CN CN202010656354.7A patent/CN111648779B/en active Active
- 2020-08-05 LU LU101977A patent/LU101977B1/en active IP Right Grant
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113108727A (en) * | 2021-04-13 | 2021-07-13 | 中铁工程装备集团有限公司 | Shield machine and detection system for sensing central region deformation of cutter head of shield machine |
| CN113266376A (en) * | 2021-05-12 | 2021-08-17 | 济南轨道交通集团有限公司 | Model test device for simulating shield approaching underground structure micro-disturbance construction |
| CN113266376B (en) * | 2021-05-12 | 2024-06-07 | 济南轨道交通集团有限公司 | Model test device for simulating shield near-grounding underground structure micro-disturbance construction |
| CN113137239A (en) * | 2021-05-15 | 2021-07-20 | 中铁十一局武汉重型装备有限公司 | Shield cutter head face reinforcing method and grouting reinforcing device used for method |
| CN113137239B (en) * | 2021-05-15 | 2023-08-22 | 中铁十一局武汉重型装备有限公司 | Method for reinforcing tunnel face of shield cutter head and grouting reinforcing device for method |
| CN113685186A (en) * | 2021-08-09 | 2021-11-23 | 北京城建轨道交通建设工程有限公司 | Tunneling method for geological drilling in shield underpass water area |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111350515A (en) | 2020-06-30 |
| CN111648779A (en) | 2020-09-11 |
| LU101977B1 (en) | 2021-02-10 |
| CN111648779B (en) | 2021-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2020100911A4 (en) | Shield structure for effectively controlling ground subsidence | |
| CN102364049B (en) | Hard rock composite TBM (Tunnel Boring Machine) suitable for composite stratum and tunneling mode thereof | |
| CN108729924B (en) | Quick construction method for mechanical excavation of urban hard rock tunnel | |
| AU2020100832A4 (en) | Special-shaped bit tool of shield machine capable of improving boring efficiency | |
| CN105113987A (en) | Soft-hard interbedding coal seam bedding measurement while drilling (MWD) orientation drilling equipment and construction method thereof | |
| CN107035376B (en) | One kind common law in huge thick bedrock aquifer digs shaft construction method | |
| CN106930766A (en) | Great burying TBM construction tunnel rock burst processing structures | |
| CN109763857B (en) | Water jet dense comb-shaped drilling type outburst elimination pre-extraction treatment method for coal seam gas to be tunneled | |
| CN112983446A (en) | Construction method for shield cutting of existing station reinforced concrete fender post | |
| CN110924956A (en) | Tunnel shield tunneling method containing boulder and bedrock raised stratum | |
| WO2024078506A1 (en) | Method and apparatus for regionalized coal mine methane drainage in deep hole | |
| CN111472801A (en) | Construction method for passing existing line under shallow-buried underground excavation drainage gallery | |
| CN105019917B (en) | Impact drilling type advanced jet grouting pipe shed construction device and construction method | |
| CN206592127U (en) | Great burying TBM construction tunnel rock burst processing structures | |
| CN105065004A (en) | Shallow-buried large-span rock tunnel portal section weak blasting excavation construction method | |
| CN112324499A (en) | Method for preventing rock burst by blocking disturbance stress wave | |
| CN204920977U (en) | Spray tube canopy construction equipment is revolved in advance to percussion drilling formula | |
| CN201650300U (en) | Self-contained obstacle breaking and foundation stabilizing device of shield machine | |
| CN105863662B (en) | A kind of no-dig technique rock tunnel(ling) machine of rock tunnel(ling) machine driving method and application this method | |
| CN205296194U (en) | Rich irrigated land layer undercut tunnel interlock pipe curtain | |
| CN208934599U (en) | A kind of big section rectangle anchoring pile rotary drilling rig rectangle die cut drill bit | |
| CN109989708A (en) | It is a kind of for being mingled with the drilling system of the deep layer soft soil foundation of rock | |
| CN105971624B (en) | The push plate device of tunnel excavation machine | |
| CN110118087B (en) | Active tool changing structure of ultrahigh water pressure long-distance submarine shield tunnel and construction method | |
| CN203081294U (en) | Drilling tool of trenchless rig for guided construction in silty soil layer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |