An annular support device for installing oil and gas pipelines in a shield tunnel
A technology of shield tunneling and ring support, which is applied in mining equipment, mining equipment, earthwork drilling and mining, etc. It can solve the problems of large pipeline stress, anchoring of pipelines on both sides, and difficult anchoring of stressed steel bars, etc., and achieves high space utilization. , to ensure the effect of operational safety
Active Publication Date: 2022-04-05
BC P INC CHINA NAT PETROLEUM CORP +2
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Problems solved by technology
In addition, the number of pipelines installed in the existing oil and gas tunnels is generally 1 to 3. When multiple pipelines are laid in parallel in the tunnel, due to the small installation space, the pipelines on both sides cannot be directly anchored to the tunnel cushion, and the oil and gas pipelines need to pass through the support. Aerial laying of piers
[0003] The traditional concrete pier is only anchored by the stressed steel bars and the tunnel cushion, and the cushions on both sides of the tunnel are thin, so it is difficult to anchor the stressed steel bars
At the same time, the pressure and temperature in long-distance curved tunnels cause high pipeline stress, which can easily cause damage to the anchorage of the pier, displacement and deformation of the pipeline and the pier, affecting the operation safety of oil and gas pipelines, and making later maintenance work more difficult , there is a serious security risk
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[0028] The present invention will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings.
[0029] An annular support device for installing an oil and gas pipeline in a shield tunnel described in an embodiment of the present invention, such as figure 1 As shown, the device includes: an annular support 1, a pipe support 2, and a sliding support 12; the annular support 1 is installed on the inner wall ring of the shield tunnel, and a plurality of annular supports 1 are arranged along the longitudinal direction of the shield tunnel, adjacent to each other The annular support 1 is connected by the annular support connecting rod 7; since the annular support 1 and the pipe support 2 form a unified whole only in the direction of the tunnel section, the device can be kept stable in the tunnel axial direction, but the annular support 1 is an independent entity along the tunnel excavation direction. It is impossible to keep th...
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The invention discloses a ring support device for installing oil and gas pipelines in a shield tunnel. The device includes a ring support, a pipeline support and a sliding support. Arranged in the longitudinal direction, adjacent ring supports are connected by ring support connecting rods; pipe supports are installed on the inner bottom of the ring supports, at least one pipe support is provided on each ring support, and steel plates are installed on the top of the pipe support; the sliding support is installed on on the steel plate. The beneficial effects of the present invention are: by installing the annular support device in the shield tunnel, it is ensured that all the stress generated during the operation of the oil and gas pipeline is transmitted to the annular support through the pipeline support and the sliding support, and is evenly distributed to the shield through the annular support. In the overall structure of the shield tunnel, the displacement of the pipeline is restricted by the main body of the shield tunnel, which ensures that the pipeline will not be displaced and deformed due to excessive stress to the greatest extent, and ensures the safety of the oil and gas pipeline operation.
Description
technical field [0001] The invention relates to the technical field of oil and gas pipeline engineering, in particular to an annular support device for installing an oil and gas pipeline in a shield tunnel. Background technique [0002] Shield tunneling is one of the common ways for oil and gas pipelines to traverse without excavation. After the construction of the shield tunnel is completed, the oil and gas pipeline needs to be installed in the shield tunnel. Compared with the installation of ground pipelines, the installation space in the shield tunnel is limited, and the installation of pipeline welding and layout is more difficult. Especially in the special case of multiple pipelines sharing the shield tunnel, it is necessary to comprehensively coordinate and consider the space layout and layout of the pipelines. A series of issues such as stress safety. At present, the crossing length of shield tunnels for oil and gas pipelines continues to increase. At the same time, ...
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IPC IPC(8): E21F17/02
CPCE21F17/02
Inventor 左雷彬刘思萌杨春玲詹胜文李国辉
Owner BC P INC CHINA NAT PETROLEUM CORP