A direct monitoring device for settlement of deep-buried underground existing pipelines

Abstract

The utility model discloses a kind of deep-buried underground existing pipeline settlement direct monitoring device, including the measured pipeline and the fixed contact surveying rod of ground survey point;The outer sleeve of surveying rod is surveying rod protection pipe, and surveying rod bottom is equipped with surveying rod pedestal;For ferromagnetic material measured pipeline, surveying rod pedestal is connected with surveying rod by universal joint connector, and strong magnet block is installed in surveying rod pedestal, and fixed on the outer wall of measured pipeline by magnetic attraction mode;For non-ferromagnetic material measured pipeline, surveying rod pedestal is fixed on the sleeve structure of surveying rod bottom, and sleeve structure is adhered on the outer wall of measured pipeline by underwater structure;It further includes surveying hole retaining wall pipe, and fine sand is filled between surveying rod protection pipe and surveying hole retaining wall pipe;Surveying rod top end is equipped with GNSS receiver, and the elevation change of surveying rod top end is measured, to realize the high-precision real-time online direct monitoring of deep-buried underground existing pipeline settlement change.

Description

Technical Field

[0001] This utility model relates to the field of settlement monitoring technology, specifically a direct monitoring device for settlement of existing deep-buried underground pipelines. Background Technology

[0002] Underground pipelines are crucial urban infrastructure. During underground engineering construction, they often significantly impact surrounding pipelines. Damage caused by pipeline deformation can have serious consequences. To ensure the safe operation of underground pipelines and the safety of the construction process, deformation monitoring of existing pipelines near the construction area is essential, with pipeline settlement monitoring being a key component. Monitoring data can effectively guide construction, optimize and adjust construction process parameters, ensure the safety of the construction process and the safe and normal operation of surrounding pipelines, and prevent accidents. During the pipeline operation period, online settlement monitoring can continuously and effectively monitor the adverse effects of uneven settlement on pipelines, promptly identify potential safety hazards, and take effective countermeasures to ensure the safe operation of the pipelines.

[0003] Currently, there are generally two methods for monitoring settlement of underground pipelines: direct monitoring points and indirect monitoring points. Direct monitoring points are usually connected directly to the pipeline after excavation using clamps or similar methods. However, these methods are difficult and costly to implement for deeply buried existing pipelines. Therefore, indirect monitoring is more commonly used for settlement monitoring of deeply buried existing pipelines. Indirect monitoring points are installed above or to the side of the pipeline by drilling and embedding reinforcing bars. Because indirect monitoring points are not directly connected to the pipeline, their settlement cannot be completely synchronized. This results in monitoring data that cannot accurately reflect the pipeline's settlement status, often leading to significant errors and potential misleading applications. Summary of the Invention

[0004] The purpose of this invention is to provide a direct monitoring device for the settlement of existing deep-buried underground pipelines, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a direct monitoring device for the settlement of existing deep-buried underground pipelines, comprising a measuring rod that is fixedly connected to the pipeline being measured and a ground measuring point; a measuring rod protective tube is fitted around the measuring rod, and a measuring rod base is provided at the bottom of the measuring rod; for pipelines made of ferromagnetic material, the measuring rod base is connected to the measuring rod via a universal joint connector, and a strong magnet is installed inside the measuring rod base, which is fixed to the outer wall of the pipeline being measured by magnetic attraction; for pipelines made of non-ferromagnetic material, the measuring rod base is fixed to a sleeve structure at the bottom of the measuring rod, and the sleeve structure is bonded to the outer wall of the pipeline being measured by underwater structural adhesive; it also includes a measuring hole protective tube, with fine sand filling the space between the measuring rod protective tube and the measuring hole protective tube; a GNSS receiver is provided at the top of the measuring rod, and by measuring the elevation change at the top of the measuring rod, high-precision real-time online direct monitoring of the settlement changes of existing deep-buried underground pipelines is achieved.

[0006] Compared with existing technologies, the beneficial effects of this utility model are: it provides an economical and applicable direct monitoring method that meets the requirements for high-precision real-time online monitoring of settlement of deeply buried underground pipelines. By establishing a connecting rod between the deeply buried underground pipeline and the ground location, a direct connection is achieved between the vertical settlement of the deeply buried underground pipeline and the ground measuring point. GNSS station equipment is installed at the top of the measuring rod at the monitoring point, and combined with GNSS Beidou positioning technology, high-precision real-time online monitoring of pipeline settlement is achieved. This utility model can realize continuous monitoring of the entire process during the construction of underground engineering projects, particularly during the period when existing pipelines are affected by construction. This plays an important role in ensuring the safety of underground engineering construction and the safe and normal operation of surrounding pipelines. This utility model can also be used for real-time online settlement monitoring of existing pipelines during their operation period. Through high-precision real-time online monitoring of pipeline settlement, the adverse effects of uneven settlement on pipelines can be continuously and effectively observed, allowing for timely detection of safety hazards and the implementation of effective countermeasures to ensure the safe operation of pipelines. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the first structural embodiment of the present utility model;

[0008] Figure 2 This is a schematic diagram of the bottom structure of the measuring rod in the first embodiment of this utility model;

[0009] Figure 3 This is a schematic diagram of the second structure of this utility model embodiment;

[0010] Figure 4 This is a schematic diagram of the bottom structure of the measuring rod in the second embodiment of this utility model.

[0011] In the diagram: 1. Settlement measuring rod; 2. Measuring rod protective tube; 3. Measuring hole wall protection tube; 4. Measuring rod base; 5. Universal joint connector; 6. GNSS receiver; 7. Underground pipeline; 8. Measuring rod bottom inner cylinder; 9. Measuring rod bottom outer cylinder; 10. Underwater structural adhesive. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Example 1 mainly targets underground pipelines made of steel pipes, cast iron pipes, and other pipe materials with ferromagnetic materials.

[0014] like Figure 1 and 2 As shown, a direct monitoring device for settlement of existing deep-buried underground pipelines includes a settlement measuring rod 1 that is fixedly connected to the pipeline being measured and a ground measuring point. The settlement measuring rod 1 is covered with a measuring rod protective tube 2. A measuring rod base 4 is provided at the bottom of the settlement measuring rod 1. The measuring rod base 4 is connected to the settlement measuring rod 1 through a universal joint connector 5. A strong magnet is installed inside the measuring rod base 4. It also includes a measuring hole protective tube 3. Fine sand is filled between the measuring rod protective tube 2 and the measuring hole protective tube 3. A GNSS receiver 6 is provided at the top of the settlement measuring rod 1.

[0015] In this embodiment, the underground pipeline 7 is buried below ground level. A strong magnet is installed inside the base 4 of the settlement measuring rod. The settlement measuring rod 1 is firmly attached to the outer wall of the underground pipeline 7 through the base 4, achieving a direct and tight connection with the underground pipeline 7. Therefore, the settlement change information of the settlement measuring rod 1 can accurately and intuitively reflect the settlement change information of the underground pipeline 7. Furthermore, by measuring the elevation change at the top of the settlement measuring rod 1, the settlement change of the underground pipeline 7 can be directly measured. The settlement measuring rod 1 is preferably made of a material with a low coefficient of thermal expansion, which can reduce the impact of deformation of the settlement measuring rod 1 itself caused by temperature changes.

[0016] The settlement changes of underground pipeline 7 are directly measured by settlement measuring rod 1, and combined with GNSS Beidou high-precision positioning technology, so as to realize high-precision real-time online monitoring of the settlement of underground pipeline 7.

[0017] Example 2 is mainly for underground pipelines where other pipe materials do not have ferromagnetic materials.

[0018] like Figure 3 and 4As shown, a direct monitoring device for settlement of existing underground pipelines includes a settlement measuring rod 1 that is fixedly connected to the pipeline being measured and a ground measuring point. The settlement measuring rod 1 is covered with a measuring rod protective tube 2. A measuring rod base 4 is provided at the bottom of the settlement measuring rod 1. The measuring rod base 4 is connected to a sleeve structure composed of an inner cylinder 8 and an outer cylinder 9 at the bottom of the measuring rod. It also includes a measuring hole protective tube 3. Fine sand is filled between the measuring rod protective tube 2 and the measuring hole protective tube 3. A GNSS receiver 6 is provided at the top of the settlement measuring rod 1.

[0019] In this embodiment, the underground pipeline 7 is buried below ground level. The settlement measuring rod 1 is fixed to the inner bottom surface of the inner cylinder 8 at the bottom of the measuring rod via the measuring rod base 4. The inner cylinder 8 and the outer cylinder 9 at the bottom of the measuring rod are firmly bonded to the outer wall of the underground pipeline 7 with underwater structural adhesive 10, achieving a direct and tight connection with the underground pipeline 7. Therefore, the settlement change information of the settlement measuring rod 1 can accurately and intuitively reflect the settlement change information of the underground pipeline 7. Furthermore, by measuring the elevation change at the top of the settlement measuring rod 1, the settlement change of the underground pipeline 7 can be directly measured. The settlement measuring rod 1 is preferably made of a material with a low coefficient of thermal expansion, which can reduce the impact of the deformation of the settlement measuring rod 1 itself caused by temperature changes.

[0020] The bottom inner cylinder 8 of the measuring rod is closed at the bottom and hollow at the top. The bottom outer cylinder 9 of the measuring rod is hollow at the bottom and has an opening at the top. The outer diameter of the bottom inner cylinder 8 is slightly smaller than the inner diameter of the bottom outer cylinder 9. The bottom inner cylinder 8 and the bottom outer cylinder 9 form a sleeve structure and are equipped with a limiting device. After assembly, the limiting position for the downward movement of the bottom inner cylinder 8 restricts the bottom surface of the bottom inner cylinder 8 to be flush with the bottom surface of the bottom outer cylinder 9 at most. The limiting position for the upward movement of the bottom inner cylinder 8 is adjusted according to the required amount of underwater structural adhesive 10 to be filled between the bottom surfaces of the bottom inner cylinder 8 and the bottom surfaces of the bottom outer cylinder 9.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for direct monitoring of settlement of existing deep-buried underground pipelines, characterized in that: The settlement measuring rod (1) is fixedly connected to the measured pipeline and the ground measuring point. The settlement measuring rod (1) is covered with a measuring rod protective tube (2). The bottom of the settlement measuring rod (1) is provided with a measuring rod base (4). The top of the settlement measuring rod (1) is provided with a GNSS receiver (6). By measuring the elevation change at the top of the settlement measuring rod (1), high-precision real-time online direct monitoring of the settlement change of the deep underground existing pipeline can be achieved. It also includes a measuring hole wall protector (3), and fine sand is filled between the measuring rod protection tube (2) and the measuring hole wall protector (3).

2. The device for direct monitoring of settlement of existing deep-buried underground pipelines according to claim 1, characterized in that: For the pipeline being tested with ferromagnetic material, the base (4) of the measuring rod is connected to the settlement measuring rod (1) through the universal joint connector (5). A strong magnet is installed inside the base (4) of the measuring rod and is fixed to the outer wall of the pipeline being tested by magnetic attraction.

3. The device for direct monitoring of settlement of existing deep-buried underground pipelines according to claim 1, characterized in that: For pipelines made of non-ferromagnetic materials, the inner cylinder (8) at the bottom of the probe and the outer cylinder (9) at the bottom of the probe form a sleeve structure. The probe base (4) is fixed on the sleeve structure, and the sleeve structure is bonded to the outer wall of the pipeline under test by underwater structural adhesive (10).

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