Convergence measuring pile capable of avoiding obstacles

Abstract

The utility model relates to the field of cavern surrounding rock deformation monitoring, in particular to a convergence measuring pile capable of avoiding obstacles. The convergence measuring pile comprises an anchoring rod and a measuring head, the end of the anchoring rod is connected with an upper connector of a multi-way connecting pipe, a first measuring head is connected to a lower connector of the multi-way connecting pipe, one end of an extension rod is detachably connected to a side connector of the multi-way connecting pipe, and a second measuring head is installed at the other end of the extension rod through an elbow. When the first measuring head is not shielded, the extension rod is disconnected with the multi-way connecting pipe, and when the first measuring head is shielded, the extension rod is connected with the multi-way connecting pipe, so that a shielding object can be avoided for continuous monitoring, the repeated layout work of convergence measuring points is reduced, the working efficiency is improved, the cost is saved, and the continuity of monitoring data is ensured.

Description

Technical Field

[0001] This utility model relates to the field of cavern surrounding rock deformation monitoring, specifically to a convergent measuring pile that can avoid obstacles. Background Technology

[0002] Convergence measurement is a simple and effective method for measuring the deformation of surrounding rock in underground caverns, and it is an essential measurement item for monitoring the construction of underground caverns. Convergence stakes are generally arranged in cross-sections at the top, middle, and other parts of the cavern, and are installed at the points to be measured before the convergence measurement. Total station measurement is a commonly used method for convergence measurement due to its fast observation speed, high accuracy, and lack of limitation on tunnel height.

[0003] Ventilation is required during the construction of tunnels and underground caverns to ensure air quality, improve construction safety, and promote construction efficiency. Ventilation ducts are generally installed at the top of the tunnel and diffuse throughout the entire tunnel as much as possible. However, the installation of ventilation ducts often obstructs convergence monitoring points at the top of the cavern, making observation impossible and forcing the monitoring process to be interrupted. Re-installing monitoring points not only increases costs but also leads to discontinuity in monitoring data.

[0004] Therefore, a convergent measuring stake is needed that can continue observations even when the measuring point is obstructed, thus ensuring the continuity of monitoring data. Utility Model Content

[0005] The technical problem to be solved by this utility model is that, in view of the shortcomings of existing convergence measuring points which are often obstructed in the tunnel construction environment, this utility model provides a convergence measuring pile that can continue to be observed without obstruction.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] An obstacle-avoiding convergence monitoring point includes an anchor rod and a probe. The end of the anchor rod is connected to the upper connector of a multi-way connecting pipe, and the lower connector of the multi-way connecting pipe is connected to a first probe. One end of an extension rod is detachably connected to the side connector of the multi-way connecting pipe, and the other end of the extension rod is fitted with a second probe via a bend. When the first probe is not obstructed, the extension rod is disconnected from the multi-way connecting pipe; when the first probe is obstructed, the extension rod is connected to the multi-way connecting pipe. This allows monitoring to continue without obstructions, reducing the need for repeated deployment of convergence monitoring points, improving work efficiency, saving costs, and ensuring the continuity of monitoring data.

[0008] Preferably, the extension rod is a single section or a multi-section structure connected in sequence.

[0009] Preferably, when the extension rod is disconnected from the multi-way connecting pipe, a protective cap is installed on the side connector of the multi-way connecting pipe to prevent spraying and dust from affecting the connectivity of the side connector of the multi-way connecting pipe.

[0010] Preferably, the multi-port connecting pipe is detachably connected to the first probe, and the extension rod is detachably connected to the second probe.

[0011] Preferably, the multi-port connecting pipe and the extension rod, the multi-port connecting pipe and the first probe, the extension rod and the elbow, and the elbow and the second probe are all connected by threads.

[0012] Preferably, the multi-port connecting pipe, extension rod, and elbow are all made of stainless steel, and the first probe and the second probe are made of PVC.

[0013] Preferably, the anchoring section is a ribbed steel bar or a threaded rod.

[0014] Preferably, the multi-way connecting pipe is a three-way connecting pipe.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1) Under normal circumstances, the anchor rod of this utility model is connected to the first probe through a multi-port connecting pipe. When the first probe is blocked, the multi-port connecting pipe is connected to the second probe (the second probe can be the first probe that has been removed or another probe) through an extension rod and an elbow, thereby avoiding obstructions, reducing the repeated deployment of convergence measurement points, and ensuring the continuity of monitoring data.

[0017] 2) When a measuring point is damaged, this utility model can directly replace the first or second measuring head at the original position to easily restore the convergence measuring pile, thereby saving the cost of setting up convergence measuring points and improving work efficiency;

[0018] 3) This utility model has a simple structure, is easy to install, and can be used repeatedly. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the installation of this utility model in cavern convergence measurement.

[0021] In the diagram: 1-Anchor rod, 2-Multi-connector pipe, 3-Extension rod, 4-Elbow, 5-First probe, 6-Epoxy resin adhesive, 7-Rock wall, 8-Second probe. Detailed Implementation

[0022] The present invention will be further described below with reference to specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Please see Figure 1 An embodiment of the obstacle-avoiding convergent measuring pile of this utility model consists of an anchor rod 1, a multi-connecting pipe 2, an extension rod 3, an elbow 4, a first measuring head 5, and a second measuring head 8.

[0026] One end of the anchor rod 1 is anchored inside the cavern rock wall 7, and the other end extends out of the cavern rock wall 7 and is detachably connected to the first probe 5 via the lower connector of the multi-way connecting pipe 2.

[0027] One end of the extension rod 3 can be detachably connected to the side connector of the multi-port connecting pipe 2, and the other end of the extension rod 3 can be detachably connected to one end of the 90-degree elbow 4. The other end of the elbow 4 can be detachably connected to the second probe 8.

[0028] In this way, when the first probe 5 is blocked, the second probe 8 can be easily connected through the extension rod 3 and the elbow 4. The second probe 8 is arranged in a visible position, so that data can continue to be monitored through the second probe 8, ensuring the continuity of monitoring data.

[0029] It should be noted that the second probe 8 can be the same as the first probe 5 that has been removed, or other probes of the same specifications can be used.

[0030] Preferably, the extension rod 3 is a single section or a multi-section structure connected in sequence.

[0031] Preferably, the multi-port connecting pipe 2 and the extension rod 3, the multi-port connecting pipe 2 and the probe 5, the extension rod 3 and the elbow 4, the elbow 4 and the probe 5, and the extension rod 3 are all connected by threads.

[0032] Preferably, when the extension rod 3 is not connected to the side connector of the multi-port connecting pipe 2, a temporary spiral protective cap can be screwed in.

[0033] Preferably, the multi-port connecting pipe 2, the extension rod 3, and the elbow 4 are made of stainless steel, and the first probe 5 and the second probe 8 are made of PVC.

[0034] Preferably, the multi-way connecting pipe 2 is a three-way connecting pipe.

[0035] In use, the anchor rod 1 is anchored to the tunnel wall 7 according to the designed position. Under normal circumstances, the first probe 5 is connected to the upper connector of the anchor rod 1 through the multi-connector pipe 2. When the first probe 5 is obstructed in the tunnel construction environment, a second probe 8 can be installed through the extension rod 3 and the elbow 4, thus allowing observation to continue without obstruction. Since the anchoring position of the convergence measuring point remains unchanged, the continuity of the monitoring data can be ensured by adding a constant correction (the method of adding the constant correction here is known to those skilled in the art).

[0036] The following describes a specific engineering application of this utility model.

[0037] During the construction of a tunnel project, total station measurements were used to monitor tunnel convergence deformation. One convergence measuring point was placed at the top and one on each side of the monitoring section along the tunnel, for a total of three measuring points per monitoring section. To more effectively observe convergence, the convergence measuring points at the top of the tunnel were installed on-site using convergence measuring piles of this invention.

[0038] The anchor rod 1, multi-way connecting pipe 2, extension rod 3, elbow 4, first probe 5, and second probe 8 of the convergence monitoring pile are all manufactured according to fixed specifications. Anchor rod 1 uses Φ22mm ribbed steel bars, while the first probe 5 and second probe 8 are made of PVC. The multi-way connecting pipe 2 is welded or glued to the anchor rod 1. During on-site installation, holes are drilled along the monitoring section at the designed location, the anchor rod 1 is inserted, and epoxy resin 6 is injected for fixation. Under normal circumstances, the first probe 5 is detachably connected to the lower end of the anchor rod 1 via the multi-way connecting pipe 2. When the first probe 5 is obstructed, it can be removed and installed at the location of the second probe 8, or a new probe of the same specification can be installed at the location of the second probe 8. This avoids obstructions, allows for continued convergence monitoring, reduces the repetitive deployment of convergence monitoring points, improves work efficiency, saves costs, and ensures the continuity of monitoring data.

[0039] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the content of the technical solution of this utility model should fall within the protection scope of the technical solution of this utility model.

Claims

1. A convergent surveying stake with obstacle avoidance capability, comprising an anchor rod and a probe, characterized in that: The end of the anchor rod is connected to the upper connector of the multi-way connecting pipe, the lower connector of the multi-way connecting pipe is connected to the first probe, and one end of the extension rod is detachably connected to the side connector of the multi-way connecting pipe. The other end of the extension rod is fitted with a second probe via a bend. When the first probe is not obstructed, the extension rod is disconnected from the multi-way connecting pipe. When the first probe is obstructed, the extension rod is connected to the multi-way connecting pipe.

2. The obstacle-avoidable convergence survey stake according to claim 1, characterized in that, The extension rod is a single section or a multi-section structure connected in sequence.

3. The obstacle-avoidable convergence survey stake according to claim 1, characterized in that, When the extension rod is disconnected from the multi-port connecting pipe, a protective cap is installed on the side connector of the multi-port connecting pipe.

4. The obstacle-avoidable convergence survey stake according to claim 1, characterized in that, The multi-port connecting pipe is detachably connected to the first probe, and the extension rod is detachably connected to the second probe.

5. The obstacle-avoidable convergent survey stake according to any one of claims 1-4, characterized in that, The multi-port connecting pipe is threaded to the extension rod, the multi-port connecting pipe is threaded to the first probe, the extension rod is threaded to the elbow, and the elbow is threaded to the second probe.

6. The obstacle-avoidable convergent survey stake according to any one of claims 1-4, characterized in that, The multi-port connecting pipe, extension rod, and elbow are all made of stainless steel, while the first probe and the second probe are made of PVC.

7. The obstacle-avoidable convergent survey stake according to any one of claims 1-4, characterized in that, The multi-way connecting pipe is a three-way connecting pipe.

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