CN210661861U

CN210661861U - Pipeline mounting structure

Info

Publication number: CN210661861U
Application number: CN201920765297.9U
Authority: CN
Inventors: 宋杰; 董梅; 张亮; 胡辉
Original assignee: Hangzhou Ruhr Technology Co Ltd
Current assignee: Hangzhou Ruhr Technology Co Ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-06-02
Anticipated expiration: 2029-05-24

Abstract

The utility model discloses a pipeline mounting structure aims at solving the pipeline and passes through the not enough of the easy pipeline destruction phenomenon that appears of mounting structure's restriction when the active fracture position. The utility model discloses a including laying the pipeline in the trench, the pipeline is equipped with the deformation compensation section of S-shaped at geology activity fracture position, and the both sides of geology activity fracture position are arranged respectively in the both ends of deformation compensation section. The pipeline installation structure greatly improves the adaptability of vertical dislocation and tension compression deformation of pipeline active fracture, adopts the common pipeline to avoid the overlarge stress of the pipeline under the condition of active fracture and large deformation through self compensation, avoids the phenomenon that the pipeline is damaged at the active fracture position, and ensures the safety of the pipeline.

Description

Pipeline mounting structure

Technical Field

The utility model relates to a pipeline laying technique, more specifically say, it relates to a pipeline mounting structure.

Background

At present, pipeline transportation is more and more widely used due to high efficiency and environmental protection, the diameter of a pipeline is larger and more important, the position in national economy is more and more important, and the damage result of the pipeline is more and more serious. The region that the pipeline passes through is wide, can meet with many factors endangering pipeline operation safety, for example the pipeline can pass through the active fracture unavoidably, the dislocation that the active fracture takes place can be transmitted to the pipeline through the soil body around the pipeline on, makes the pipeline receive tensile, compression, side direction shearing action, when the restraint of pipeline peripheral soil layer is big, can make the pipeline bear big effort to endanger the safety of pipeline. In some relevant design specifications of pipelines, the pipeline is generally broken through movement by adopting 'the pipeline is straight and passes through a large angle', 'wide and shallow pipe ditches and loose sand backfill', and the latest research adopts a technology of adopting special large-deformation steel pipes to enhance the safety of the pipeline in the movement breakage. However, loose sand becomes hardened and no longer loose after being soaked by rainwater and the like, and the purpose of loose backfilling is lost. The deformation amount which can be increased by the special large-deformation steel pipe is extremely limited, and the special large-deformation steel pipe is difficult to adapt to large deformation and violent movement caused by movable fracture.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes receive the restriction of mounting structure when the pipeline passes through the active fracture position not enough that the pipeline destruction phenomenon appears easily, provide a pipeline mounting structure, it greatly improves the upper and lower dislocation that pipeline active fracture takes place, stretch-draw compressive deformation adaptability, adopt ordinary pipeline just can avoid the pipeline atress too big under the big deformation condition of active fracture through the compensation of self, avoided the phenomenon destroyed at the active fracture position pipeline, guaranteed the security of pipeline.

In order to solve the technical problem, the utility model discloses a following technical scheme: the utility model provides a pipeline mounting structure, includes lays the pipeline in the trench, and the pipeline is equipped with the deformation compensation section of S-shaped at geology activity fracture position, and the both ends of deformation compensation section are arranged in geology activity fracture position' S both sides respectively.

The S-shaped deformation compensation section on the pipeline can fully reserve the deformation space of the pipeline in a certain area, when the movable fracture generates displacement, the displacement caused by the movable fracture can be compensated through the arc reserved length (deformation space), and the acting force caused by the movable fracture displacement is reduced, so that the safety of the pipeline is protected. The position of the active fracture is determined by geological exploration before the pipeline is installed, and the moving mode of the active fracture generally comprises compression, stretching, up-and-down dislocation, horizontal dislocation and the like and the combination of the above moving modes. When the compression movement occurs in the movable fracture, the S-shaped deformation compensation section generates micro strain along the originally arranged arc when being extruded so as to compensate the compression movement displacement of the movable fracture, so that the stress on the pipeline is small, and the safety of the pipeline is protected. When the S-shaped deformation compensation section is stretched and vertically staggered, the arc-shaped laid pipeline can be compensated due to the fact that the reserved length of the pipeline generates micro strain, stress on the pipeline is small, and safety of the pipeline is protected. The dislocation direction should be considered for the horizontal dislocation active fracture, the S-shaped arc direction and the arc curvature radius are set according to the compensation principle, and the dislocation direction of the broken block on one side of the active fracture is opposite to the arc top direction, so that when the active fracture displaces, the pipeline can compensate for the deformation caused by the dislocation in time through the reserved length of the arc, the acting force caused by the displacement of the active fracture is reduced, and the safety of the pipeline is protected. The pipeline installation structure greatly improves the adaptability of vertical dislocation and tension compression deformation of pipeline active fracture, adopts the common pipeline to avoid the overlarge stress of the pipeline under the condition of active fracture and large deformation through self compensation, avoids the phenomenon that the pipeline is damaged at the active fracture position, and ensures the safety of the pipeline.

Preferably, the deformation compensation sections are vertically arranged or horizontally arranged. The deformation compensation section is horizontally arranged at the movable fracture position which is easy to compress or stretch or horizontally dislocate, and the deformation compensation section is vertically arranged at the movable fracture position which is easy to vertically dislocate, so that the deformation compensation section achieves the optimal compensation effect.

Preferably, the deformation compensation section comprises an arc front section and an arc rear section, the arc opening directions of the arc front section and the arc rear section are opposite, and the arc front section and the arc rear section are in smooth transition. The deformation compensation section arranged by the structure has good compensation effect.

Preferably, the radii of curvature of the forward and aft arcuate sections are each greater than 1000 times the diameter of the pipe. According to the predicted maximum displacement which may occur to the active fracture, calculating a compensation value of the length reserved on the arc of the pipeline under the condition of being constrained by the surrounding soil body when the maximum displacement occurs, wherein the compensation value is larger than the maximum displacement value, and the curvature radius can be generally set to be larger than 1000 times of the diameter of the pipeline by combining the S-shaped space (terrain condition) on both sides of the active fracture.

Preferably, the left side and the right side of the pipeline in the pipe ditch are respectively provided with a guide slope, the lower end of each guide slope is arranged at the bottom of the pipe ditch, the upper end of each guide slope is arranged at the edge of an opening at the upper end of the pipe ditch, a guide film is laid on the upper surface of each guide slope, and the guide film and the pipeline are filled with soil.

The guide film laid on the guide slope has small friction coefficient, and when the movement fracture generates larger deformation or violent movement, the soil around the pipeline can be extruded outwards along the guide slope, so that the pipeline is prevented from bearing overlarge force, and the safety of the pipeline is ensured.

Preferably, the upper surface of the guide slope is of an inwards concave arc structure, and the tangent angle of the lower end of the guide slope and the horizontal plane is 15-35 degrees. The guide slope arranged by the structure can extrude soil more easily.

Preferably, the guide film is a PE film. The PE film has small friction coefficient, long service life and low cost.

Preferably, the width of the trench is 2 to 5 times the diameter of the pipe. The trench broad is convenient for the installation of pipeline and the setting of direction slope.

Preferably, a shaping frame is installed in the pipe ditch at a certain interval, the upper end of the shaping frame is of an inwards concave arc structure, and the upper surface of the shaping frame is flush with the upper surfaces of the guide slopes on two sides of the pipeline. The shaping frame plays a certain shaping role in the pipe ditch, prevents soil around the pipe ditch from acting a large load on the pipeline and plays a certain protection role in the pipeline.

Preferably, a water-stop film is laid on the filling soil above the pipe trench, the water-stop film is of an inverted V-shaped structure, the left side and the right side of the water-stop film are placed on the ground on the left side and the right side of the pipe trench, and a soil layer covers the water-stop film. The water-proof film is used for preventing water from being separated from the soil body above the pipeline, so that the soil body is prevented from being hardened and not loosened after water flows enter the soil body, and the acting force of the soil body on the pipeline is reduced.

Compared with the prior art, the beneficial effects of the utility model are that: (1) the pipeline installation structure greatly improves the adaptability of up-down dislocation and tension compression deformation of the pipeline in active fracture, and adopts the common pipeline to avoid the overlarge stress of the pipeline under the condition of active fracture and large deformation by self compensation, thereby avoiding the phenomenon that the pipeline is damaged at the active fracture position and ensuring the safety of the pipeline; (2) when the movement fracture generates larger deformation or violent movement, the soil around the pipeline can be extruded outwards along the guide slope, so that the pipeline is prevented from bearing excessive force, and the safety of the pipeline is ensured; (3) the shaping frame plays a certain shaping role in the pipe ditch, prevents that soil around the pipe ditch from acting on the pipeline with great load, plays a certain protective action on the pipeline, and the water-stop film carries out water stop on the soil body above the pipeline, prevents to make the soil body harden after rivers get into the soil body no longer loose, reduces the effort of the soil body to the pipeline.

Drawings

Fig. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is a schematic structural diagram of the pipe deformation compensation section of the present invention;

fig. 3 is a schematic structural view of embodiment 2 of the present invention;

in the figure: 1. pipe ditch, 2, pipeline, 3, deformation compensation section, 4, arc anterior segment, 5, arc back end, 6, direction slope, 7, guide film, 8, design frame, 9, water-stop film, 10, soil layer.

Detailed Description

The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:

example 1: a pipeline installation structure (see attached figures 1 and 2) comprises a pipeline 2 laid in a pipe ditch 1, wherein an S-shaped deformation compensation section 3 is arranged at a geological active fracture position of the pipeline, and two ends of the deformation compensation section are respectively arranged at two sides of the geological active fracture position. The deformation compensation sections are vertically arranged or horizontally arranged. The deformation compensation section comprises an arc front section 4 and an arc rear section 5, the arc opening directions of the arc front section and the arc rear section are opposite, and smooth transition is realized between the arc front section and the arc rear section. The curvature radius of arc anterior segment and arc back end all is greater than 1000 times of pipeline diameter, and the curvature radius of arc anterior segment and arc back end all is greater than 1200 times of pipeline diameter in this embodiment. The width of the pipe ditch is 2-5 times of the diameter of the pipeline. The left side and the right side of the pipeline in the pipe ditch are respectively provided with a guide slope 6, the lower end of each guide slope is arranged at the bottom of the pipe ditch, the upper end of each guide slope is arranged at the opening edge of the upper end of the pipe ditch, the upper surface of each guide slope is of an inwards concave arc structure, and the tangent angle between the lower end of each guide slope and the horizontal plane is 15-35 degrees. And a guide film 7 is paved on the upper surface of the guide slope, and the guide film is a PE film. And filling soil on the guide film and the pipeline.

Example 2: a pipeline mounting structure (see attached figure 3) is similar to that of embodiment 1, and mainly differs in that a shaping frame 8 is mounted in a pipe ditch at a certain interval in the embodiment, the upper end of the shaping frame is of an inwards concave arc structure, and the upper surface of the shaping frame is flush with the upper surfaces of guide slopes on two sides of a pipeline. And a water-stop film 9 is laid on the filling soil above the pipe ditch, the water-stop film is of an inverted V-shaped structure, the left side and the right side of the water-stop film are arranged on the ground of the left side and the right side of the pipe ditch, and soil layers 10 are covered on the water-stop film. The other structure is the same as embodiment 1. The shaping frame plays a certain shaping role in the pipe ditch, prevents that soil around the pipe ditch from acting on the pipeline with great load, plays a certain protective action on the pipeline, and the water-stop film carries out water stop on the soil body above the pipeline, prevents to make the soil body harden after rivers get into the soil body no longer loose, reduces the effort of the soil body to the pipeline.

The above-described embodiments are merely preferred and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A pipeline installation structure is characterized by comprising a pipeline laid in a pipe ditch, wherein an S-shaped deformation compensation section is arranged at a geological active fracture position of the pipeline, and two ends of the deformation compensation section are respectively arranged at two sides of the geological active fracture position; the deformation compensation section comprises an arc front section and an arc rear section, the arc opening directions of the arc front section and the arc rear section are opposite, and smooth transition is realized between the arc front section and the arc rear section.

2. The pipe installation structure according to claim 1, wherein the strain compensating section is vertically disposed or horizontally disposed.

3. A pipe fitting structure as claimed in claim 1, wherein the radii of curvature of the curved front and rear sections are each greater than 1000 times the diameter of the pipe.

4. A pipeline installation structure as claimed in any one of claims 1 to 3, wherein the left and right sides of the pipeline in the trench are provided with guide slopes, the lower ends of the guide slopes are disposed at the bottom of the trench, the upper ends of the guide slopes are disposed at the edge of the opening at the upper end of the trench, and the upper surface of the guide slopes is provided with a guide film, the guide film and the pipeline are filled with earth.

5. The pipeline installation structure of claim 4, wherein the upper surface of the guide slope is in a concave arc structure, and the tangent angle of the lower end of the guide slope and the horizontal plane is 15-35 degrees.

6. The pipe installation structure according to claim 4, wherein the guide film is a PE film.

7. A pipe installation structure as claimed in any one of claims 1 to 3, wherein the width of the groove is 2 to 5 times the diameter of the pipe.

8. The pipeline installation structure of claim 4, wherein a jig is installed in the trench at a predetermined interval, the upper end of the jig is formed in a concave arc shape, and the upper surface of the jig is flush with the upper surfaces of the guide slopes on both sides of the pipeline.

9. The pipe installation structure according to claim 8, wherein a water-stop film is laid on the fill above the pipe trench, the water-stop film has an inverted V-shaped configuration, left and right sides of the water-stop film are placed on the ground on left and right sides of the pipe trench, and the water-stop film is covered with a soil layer.