阅读说明：本技术 一种长距离盾构隧道内管道安装装置及安装方法 (Device and method for installing pipelines in long-distance shield tunnel ) 是由 詹胜文 左雷彬 任文明 尤伟星 王丽 张磊 钱峰 李涛 于 2020-07-28 设计创作，主要内容包括：本发明公开了一种长距离盾构隧道内管道安装装置和安装方法,包括安装在盾构隧道内的管道支架、安装在所述管道支架上多条轨道和设置在所述轨道上的多个滑动支座,管道安装在滑动支座上,一根管道上对应多个滑动支座；管道通过滑动支座将管道运送到盾构隧道内,将运送到到盾构隧道内的多个管道段连接固定后,在盾构隧道内浇筑泡沫混凝土填充。本发明的有益效果为：通过在管道支架上安装轨道,并通过滑动支座直接将管道运送到盾构隧道内部进行连接,不用二次吊装,降低了管道焊口应力；施工器材也可通过轨道运送,方便管道安装和施工；采用上下分层的立体式管道支架,通过合理布局,可以在盾构隧道内安装多条管道线路,空间利用率高。(The invention discloses a device and a method for installing pipelines in a long-distance shield tunnel, which comprise a pipeline bracket arranged in the shield tunnel, a plurality of tracks arranged on the pipeline bracket and a plurality of sliding supports arranged on the tracks, wherein the pipelines are arranged on the sliding supports, and one pipeline corresponds to the plurality of sliding supports; the pipeline is conveyed into the shield tunnel through the sliding support, and after the pipeline sections conveyed into the shield tunnel are connected and fixed, foam concrete is poured into the shield tunnel for filling. The invention has the beneficial effects that: the pipeline is directly conveyed into the shield tunnel for connection through the sliding support without secondary hoisting by installing the track on the pipeline support, so that the pipeline welded junction stress is reduced; construction equipment can also be conveyed through the rail, so that the pipeline installation and construction are facilitated; by adopting the vertical pipeline support which is layered up and down, a plurality of pipeline lines can be installed in the shield tunnel through reasonable layout, and the space utilization rate is high.)

1. A long distance shield tunnel interior pipe installation device, its characterized in that, the device includes:

the pipeline support is arranged at the bottom side in the shield tunnel and comprises a plurality of transverse frames (1) arranged along the radial direction of the shield tunnel and longitudinal beams (2) arranged along the longitudinal direction of the shield tunnel, and the adjacent transverse frames (1) are connected through the longitudinal beams (2) and are arranged along the longitudinal direction of the tunnel;

a plurality of rails (6) installed on the top surfaces of the pipe brackets in the longitudinal direction of the shield tunnel, respectively;

a plurality of sliding supports (7) which are all arranged on the track (6) and are used for supporting and installing pipelines (9);

the pipeline support is characterized in that the pipeline support is provided with a plurality of U-shaped pipe hoops (8), and the pipeline (9) is fixed on the pipeline support through the U-shaped pipe hoops (8).

2. The long-distance shield tunnel interior pipe installation apparatus according to claim 1,

the transverse frame (1) is divided into an upper layer and a lower layer, the lower layer is a steel ring beam (3), the radian of the steel ring beam (3) is attached to the radian of the bottom of a tunnel and is connected with a pre-embedded steel plate on a tunnel ring piece, the upper layer is a horizontal cross beam (4), and the steel ring beam (3) is connected with the horizontal cross beam (4) through a support rod (5);

the rails (6) are mounted on the cross frame (1).

3. The long-distance shield tunnel pipe installation device according to claim 2, wherein the pipes comprise a pipe a (14) arranged in the middle of the bottom of the steel ring beam, and a pipe B (16) and a pipe C (18) arranged on the horizontal cross beam.

4. The long-distance shield tunnel interior pipe installation apparatus according to claim 1,

the sliding support (7) comprises a roller (10) and a steel plate support (11); wherein the roller (10) is arranged at the bottom of the sliding support and slides along the rail (6) in a rolling way; the steel plate support (11) is arranged above the roller (10) and is of an annular structure consisting of an upper semicircle and a lower semicircle, the pipeline (9) is fixed in the steel plate support (11), and the upper semicircle and the lower semicircle of the steel plate support (11) are connected through a high-strength bolt (12).

5. A method for installing pipelines in a long-distance shield tunnel is characterized by comprising the following steps:

step 1, installing a pipeline bracket in a shield tunnel;

step 2, paving a track on the pipeline bracket;

step 3, calculating the pipeline span, and arranging a sliding support on the track according to the calculated pipeline span;

step 4, installing the pipeline on a sliding support, and conveying the pipeline into the shield tunnel through the sliding support;

step 5, connecting a plurality of pipeline sections conveyed into the shield tunnel until the pipeline passes through the shield tunnel;

step 6, fixing the connected pipeline on the pipeline bracket;

step 7, after the installation of the pipelines in the tunnel is finished, installing vertical shaft pipelines in vertical shafts at two sides of the shield tunnel, connecting the lower ends of the vertical shaft pipelines with the pipelines in the shield tunnel, and fixing the vertical pipelines;

and 8, pouring foam concrete into the shield tunnel to fill after the fixing of the pipeline in the tunnel and the vertical shaft pipeline is finished.

6. The long-distance shield tunnel internal pipe installation method according to claim 5,

step 1 the installation of pipeline support and the installation of section of jurisdiction in the shield tunnel go on for synchronous, include:

step 1.1, splicing 4 sections of transverse supports into an integral transverse frame in a shield tunnel along the radial direction of the shield tunnel, wherein a steel ring beam (3) of the transverse frame is connected with a pre-embedded steel plate on a tunnel ring piece;

and step 1.2, connecting the adjacent crossbeams through the longitudinal beams to splice the pipeline brackets.

7. The method for installing pipelines in a long-distance shield tunnel according to claim 5, wherein in step 2, 5 tracks are laid on the pipeline bracket, one track is laid on the lower layer of the pipeline bracket, the other 4 tracks are laid on the upper layer of the pipeline bracket, and the track laying and the pipeline bracket installation are carried out synchronously.

8. The method of claim 5, wherein in step 4, the pipeline transportation is performed simultaneously from the middle to both ends of the shield tunnel, and simultaneously the pipeline welding, the nondestructive testing and the corrosion prevention joint coating are performed simultaneously from the middle to both ends of the shield tunnel.

9. The method for installing pipelines in a long-distance shield tunnel according to claim 5, wherein in the step 8, the foam concrete is poured from the middle part of the shield tunnel to the two ends simultaneously by adopting layered and segmented pouring.

10. The method for installing the pipeline in the long-distance shield tunnel according to claim 8, wherein the layering thickness is 30-80 cm, the segment length is 15m, and a wooden template and an inclined strut are adopted for a pouring template.

Technical Field

The invention relates to the technical field of petroleum and natural gas pipeline engineering, in particular to a device and a method for installing pipelines in a long-distance shield tunnel.

Background

The shield tunnel is one of the modes that the pipeline passes through in the non-excavation and commonly used, as the dedicated passage of pipeline, after the shield tunnel construction is accomplished, the pipeline will be installed in the shield tunnel, compare ground pipeline, the pipeline installation space is less in the shield tunnel, and the pipeline installation degree of difficulty is great, especially under the circumstances that many pipelines share the shield tunnel, need comprehensively consider a series of problems such as comprehensive arrangement, stress safety, pipeline transportation, installation scheme of pipeline. At present, the length of the pipeline tunnel is broken through continuously, and when the length of the shield tunnel is longer, a plurality of pipelines are generally required to be connected in series, so that the difficulty of pipeline installation is high. In addition, the installation quantity of pipelines in the existing oil and gas shield tunnel is usually 1-2, when a plurality of pipelines share the shield tunnel, because the space in the tunnel is limited, the construction difficulty is increased along with the increase of the quantity of the pipelines, and when the shield tunnel is long in distance, the construction difficulty is increased in multiples, and the later maintenance difficulty is increased.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a long-distance shield tunnel pipeline installation apparatus, which includes:

the pipeline support is arranged at the bottom side in the shield tunnel and comprises a plurality of transverse frames arranged along the radial direction of the shield tunnel and longitudinal beams arranged along the longitudinal direction of the shield tunnel, and the adjacent transverse frames are connected through the longitudinal beams and are arranged along the longitudinal direction of the tunnel;

a plurality of rails installed on the top surface of the pipe bracket in the longitudinal direction of the shield tunnel, respectively;

the sliding supports are arranged on the track and used for supporting and installing pipelines;

the pipeline is fixed on the pipeline bracket through the U-shaped pipe hoops.

As a further improvement of the invention, the cross frame is divided into an upper layer and a lower layer, the lower layer is a steel ring beam, the radian of the steel ring beam is fitted with the radian of the bottom of the tunnel and is connected with a pre-embedded steel plate on a tunnel ring sheet, the upper layer is a horizontal beam, and the steel ring beam is connected with the horizontal beam through a support rod;

a plurality of said tracks are mounted on said cross-frame.

As a further improvement of the invention, the pipelines comprise a pipeline A arranged in the middle of the bottom of the steel ring beam, and a pipeline B and a pipeline C arranged on the horizontal cross beam.

As a further improvement of the invention, the sliding support comprises a roller and a steel plate support; the roller is installed at the bottom of the sliding support and slides along the rail in a rolling manner; the steel plate support is arranged above the roller and is of an annular structure consisting of an upper semicircle and a lower semicircle, the pipeline is fixed in the steel plate support, and the upper semicircle and the lower semicircle of the steel plate support are connected through high-strength bolts.

As a further improvement of the invention, the horizontal height of the middle section of the horizontal cross beam is larger than the horizontal height of the two side sections.

As a further improvement of the invention, the plurality of tracks comprise a group of tracks A arranged in the middle of the bottom of the steel ring beam and a plurality of groups of tracks arranged on the horizontal cross beam, and pipelines are arranged on the tracks A.

As a further improvement of the invention, a group of rails, namely a rail B and a rail C, are respectively arranged on the two side sections of the horizontal beam, a group of rails D are arranged on the middle section of the horizontal beam, and pipelines are respectively arranged on the rails B and the rails C.

As a further improvement of the invention, two ends of the horizontal beam are respectively provided with one rail near the inner wall of the tunnel, two rails arranged at two ends of the horizontal beam form a group of rails E, and the rails E are provided with a portal frame.

As a further improvement of the invention, the crossbearers are uniformly arranged in the tunnel.

The invention also provides a method for installing the pipeline in the long-distance shield tunnel, which comprises the following steps:

step 1, installing a pipeline bracket in a shield tunnel;

step 2, paving a track on the pipeline bracket;

step 3, calculating the pipeline span, and arranging a sliding support on the track according to the calculated pipeline span;

step 4, installing the pipeline on a sliding support, and conveying the pipeline into the shield tunnel through the sliding support;

step 5, connecting a plurality of pipeline sections conveyed into the shield tunnel until the pipeline passes through the shield tunnel;

step 6, fixing the connected pipeline on the pipeline bracket;

step 7, after the installation of the pipelines in the tunnel is finished, installing vertical shaft pipelines in vertical shafts at two sides of the shield tunnel, connecting the lower ends of the vertical shaft pipelines with the pipelines in the shield tunnel, and fixing the vertical pipelines;

and 8, pouring foam concrete into the shield tunnel to fill after the fixing of the pipeline in the tunnel and the vertical shaft pipeline is finished.

As a further improvement of the invention, the installation of the pipeline support in the step 1 and the installation of the duct piece in the shield tunnel are carried out synchronously, and the method comprises the following steps:

step 1.1, splicing 4 sections of transverse supports into an integral transverse frame in a shield tunnel along the radial direction of the shield tunnel, wherein a steel ring beam of the transverse frame is connected with an embedded steel plate on a tunnel ring piece;

and step 1.2, connecting the adjacent crossbeams through the longitudinal beams to splice the pipeline brackets.

As a further improvement of the invention, the pipeline bracket comprises cross frames arranged along the radial direction of the tunnel and longitudinal beams arranged along the longitudinal direction of the tunnel, a plurality of the cross frames are arranged in the tunnel at certain intervals, and the adjacent cross frames are connected through the longitudinal beams; the transverse frame is divided into an upper layer and a lower layer, the lower layer is a steel ring beam, the radian of the steel ring beam is attached to the radian of the bottom of the tunnel and is connected with a pre-embedded steel plate on a tunnel ring piece, the upper layer is a horizontal cross beam, and the steel ring beam is connected with the horizontal cross beam through a support rod; the plurality of rails are mounted on the cross frame.

As a further improvement of the invention, in step 2, 5 tracks are laid on the pipeline support, one track is laid on the lower layer of the pipeline support, the other 4 tracks are laid on the upper layer of the pipeline support, and the track laying and the pipeline support installation are carried out synchronously.

As a further refinement of the invention, calculating the pipe span comprises: respectively calculating the pipeline span based on the pipeline rigidity and the pipeline strength, and taking the smaller of the pipeline span and the pipeline strength as the pipeline span;

the method comprises the following steps of calculating the pipeline span based on the pipeline rigidity by adopting the following formula:

f_q+f_c≤[f]

in the formula (I), the compound is shown in the specification,

f_qthe mid-span deflection (m) caused by uniformly distributed load;

f_cmid-span deflection (m) caused by concentrated load acting on the mid-span;

L_ris a pipe span (m) determined by the stiffness condition;

k_qthe distribution coefficient of the bending moment caused by uniformly distributing the load is obtained;

k_cthe distribution coefficient of bending moment caused by concentrated load is obtained;

e is the elastic modulus (Pa) of the steel;

i is the inertia moment (m) of the pipeline after deducting amount of corrosion and negative deviation⁴)；

q is the uniform load (indicating the self weight and medium weight) of each meter of pipeline (N/m);

c is the concentrated load (the weight of the diameter measuring ball and the weight of the pipe cleaner) (N).

[f] To allow for deflection, the following formula is used in accordance with the oil and gas transportation pipeline crossing engineering design standard (GB 50459), where the pipeline span is calculated based on the pipeline strength:

σ_a＝σ_a1+σ_a2+σ_a3+σ_at

σ_a1＝0.5σ_h

M＝M_q+M_c

σ_at＝αEΔt

[σ]＝Fσ_s

in the formula (I), the compound is shown in the specification,

σ_hhoop stress (MPa) induced by the medium being transported through the conduit;

σ_athe total axial stress (MPa) of the pipeline;

[ sigma ] is allowable stress (MPa);

p is the pipeline internal pressure (MPa);

d is the inner diameter (mm) of the pipeline;

is the pipe wall thickness (mm);

σ_a1axial stress (MPa) due to internal pressure;

σ_a2bending stress (MPa) caused by a load;

σ_a3axial stress (MPa) induced for pipeline hang-ups;

σ_αtaxial stress (MPa) caused by temperature change;

m is a bending moment (Nm) generated by the load in the span;

w is the pipe section resisting moment (m)³)；

M_qBending moment (Nm) generated by uniformly distributing load in the span;

M_cbending moment (Nm) generated in the midspan for concentrated loading;

q is the uniform load (including the self weight of the pipeline and the weight of the medium) of each meter of pipeline (N/m);

c is a concentrated load (containing the weight of the diameter measuring ball and the weight of the pipe cleaner) (N);

L_sis a pipe span (m) determined by the strength conditions;

e is the elastic modulus (N/mm) of the steel²)；

D is the outer diameter (mm) of the pipeline;

f_rmid-span deflection (mm) due to loading;

alpha is the linear expansion coefficient (m/(m DEG C)) of the steel;

Δ t is the temperature difference (. degree. C.);

σ_sthe yield stress (MPa) of the steel pipe;

f is the intensity design factor.

As a further improvement of the invention, in step 4, the pipeline arrangement is carried out from the middle part to both ends of the shield tunnel, and meanwhile, the pipeline welding, the nondestructive testing and the anticorrosion joint coating are carried out from the middle part to both ends of the shield tunnel.

As a further improvement of the method, in the step 8, foam concrete is poured from the middle part to the two ends of the shield tunnel by layering and subsection pouring.

As a further improvement of the invention, the foam concrete pouring has the layering thickness of 30-80 cm and the segment length of 15m, and the pouring template adopts a wood template and an inclined strut.

The invention has the beneficial effects that: the pipeline is directly conveyed into the shield tunnel for connection through the sliding support without secondary hoisting by installing the track on the pipeline support, so that the pipeline welded junction stress is reduced; construction equipment can also be conveyed through the rail, so that the pipeline installation and construction are facilitated; by adopting the vertical pipeline support which is layered up and down, a plurality of pipeline lines can be installed in the shield tunnel through reasonable layout, and the space utilization rate is high.

Drawings

Fig. 1 is a schematic structural diagram of a pipeline bracket of a pipeline installation device in a long-distance shield tunnel according to an embodiment of the invention;

fig. 2 is a schematic diagram illustrating a split cross frame of a pipeline installation device in a long-distance shield tunnel according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating installation of a pipe bracket of a pipe installation device in a long-distance shield tunnel according to an embodiment of the present invention;

fig. 4 is a schematic view of a pipeline layout of a pipeline installation device in a long-distance shield tunnel according to an embodiment of the present invention;

fig. 5 is a schematic view of a sliding support of the pipeline installation device in a long-distance shield tunnel according to the embodiment of the present invention;

fig. 6 is a schematic structural view of a sliding support of a pipeline installation device in a long-distance shield tunnel according to an embodiment of the present invention;

fig. 7 is a side view of a sliding support of a pipeline installation device in a long-distance shield tunnel according to an embodiment of the invention;

fig. 8 is a schematic view illustrating installation of a U-shaped pipe hoop of a pipeline installation device in a long-distance shield tunnel according to an embodiment of the present invention;

FIG. 9 is a schematic view of a track and pipe installation of an embodiment of the present invention;

FIG. 10 is a schematic view of a pipe hoist downhole according to an embodiment of the invention;

FIG. 11 is a schematic view of a pipeline transportation of an embodiment of the invention;

fig. 12 is a schematic view of hoisting of a shaft inner pipeline according to an embodiment of the invention.

In the figure, the position of the upper end of the main shaft,

1. a cross frame; 2. a stringer; 3. a steel ring beam; 4. a horizontal cross beam; 5. a support bar; 6. a track; 7. a sliding support; 8. a U-shaped pipe hoop; 9. a pipeline; 10. a roller; 11. a steel plate support; 12. a high strength bolt; 13. a track A; 14. a pipeline A; 15. a track B; 16. a pipeline B; 17. a track C; 18. a pipe C; 19. a track D; 20. a track E; 21. a portal frame.

Detailed Description

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.