Tunnel monitoring support

Abstract

The utility model discloses a tunnel monitoring support, belongs to the field of tunnel deformation measurement, and aims to enable measuring points for clearance detection and settlement monitoring to be shared. Comprising a monitoring rod, a connecting base is fixed to the outer wall of the monitoring rod, a threaded through hole penetrating through the connecting base is formed in the connecting base, and the axial direction of the threaded through hole is perpendicular to the monitoring rod; a connecting rod is in threaded connection in the threaded through hole, and one end of the connecting rod is connected with a prism; and a hook is arranged at the tail end of the monitoring rod. The monitoring rod is provided with the hook used for hooking the clearance convergence gauge and the prism used for centering monitoring of the total station, so that clearance convergence monitoring and settlement monitoring are carried out at the same time, the tunnel monitoring support enables the clearance convergence monitoring and the settlement monitoring to share the measuring points on the end face of the tunnel, repeated point distribution is avoided, and the monitoring efficiency is improved. And the working efficiency is improved while monitoring point distribution materials are reduced. And the prism can be recycled after the monitoring task is completed, so that the material cost is further reduced.

Description

Technical Field

[0001] The utility model belongs to the field of tunnel deformation measurement, in particular to a tunnel monitoring bracket. Background Art

[0002] In order to ensure the quality of tunnel engineering, settlement monitoring and clearance convergence monitoring are required during the tunnel construction process. Tunnel deformation can be analyzed through settlement monitoring and clearance convergence monitoring.

[0003] Clearance convergence is also called clearance deformation, which refers to the phenomenon that the surrounding rock mass invades the tunnel clearance after tunnel excavation. It generally refers to the change in the relative position between two points on the tunnel periphery. The clearance convergence monitoring methods include the convergence meter contact measurement method, the non-contact total station method and the distance meter method. The convergence meter method is a method in which the convergence meter uses mechanical transmission of displacement to convert the relative displacement between two reference points into the difference between two readings of the displacement meter.

[0004] Tunnel settlement monitoring generally uses a total station. During operation, settlement detection points are arranged on the tunnel surrounding rock wall, and the settlement situation is obtained by collecting data from the settlement detection points through the total station.

[0005] At present, clearance convergence detection and settlement monitoring are carried out separately, that is, the clearance convergence detection points and settlement monitoring points are arranged independently, resulting in a large number of monitoring points and affecting the monitoring efficiency. Utility Model Content

[0006] The utility model aims to provide a tunnel monitoring bracket, so that the measuring points of clearance detection and settlement monitoring can be shared, thereby improving work efficiency.

[0007] The technical solution adopted by the utility model is: a tunnel monitoring bracket, including a monitoring rod, a connecting seat is fixed on the outer wall of the monitoring rod, a threaded through hole penetrating the connecting seat is opened on the connecting seat, and the axial direction of the threaded through hole is perpendicular to the monitoring rod; a connecting rod is threadedly connected to the threaded through hole, and one end of the connecting rod is connected to a prism; a hook is arranged at the end of the monitoring rod.

[0008] Furthermore, the prism includes a lens body and a lens frame arranged on the periphery of the lens body;

[0009] In the vertical direction, a vertical transfer shaft is provided on the mirror frame, the vertical transfer shaft is parallel to the monitoring rod, and both ends of the vertical transfer shaft are movably mounted on the connecting rod;

[0010] Along the horizontal direction, transverse transfer shafts are arranged on both sides of the mirror body, and the transverse transfer shafts are movably installed on the mirror frame.

[0011] Furthermore, the front end of the monitoring rod is a conical head.

[0012] Furthermore, the monitoring rod is a stainless steel pipe.

[0013] The utility model has the following beneficial effects: the tunnel monitoring bracket disclosed by the utility model realizes simultaneous clearance convergence monitoring and settlement monitoring by providing a hook for hanging a clearance convergence meter and a prism for centering monitoring of a total station on the monitoring pole. The tunnel monitoring bracket enables clearance convergence monitoring and settlement monitoring to share the measuring points on the tunnel end face, thus avoiding repeated point arrangement, reducing materials for monitoring point arrangement and improving work efficiency. Moreover, the prism can be recycled after the monitoring task is completed, further reducing material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a partial enlarged view of the utility model;

[0016] Figure 3 The diagram is a schematic diagram of using the utility model to be installed in a tunnel for measurement.

[0017] In the figure, there are a monitoring pole 1, a hook 2, a connecting seat 3, a connecting rod 4, a prism 5, a mirror body 51, a mirror frame 52, a vertical transfer shaft 53, a horizontal transfer shaft 54, and a clearance convergence meter 6. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0019] In the present invention, the terms "longitudinal", "lateral", "vertical", "upper", "lower" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or position relationship shown is only for the convenience of describing the present invention, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] Tunnel monitoring bracket, such as Figure 1 As shown, it includes a monitoring rod 1, a connecting seat 3 is fixed on the outer wall of the monitoring rod 1, a threaded through hole penetrating the connecting seat 3 is opened on the connecting seat 3, and the threaded through hole is axially perpendicular to the monitoring rod 1; a connecting rod 4 is threadedly connected to the threaded through hole, and a prism 5 is connected to one end of the connecting rod 4; a hook 2 is arranged at the end of the monitoring rod 1.

[0021] In the tunnel monitoring bracket disclosed by the utility model, the hook 2 at the end of the monitoring rod 1 is used for hanging a clearance convergence monitoring meter.

[0022] The prism 5 at the outer end of the connecting rod 4 is used for tunnel settlement monitoring and provides a measuring point for tunnel settlement monitoring. The specific usage is as follows:

[0023] First, if Figure 3 As shown, the monitoring rod 1 is buried in the reserved tunnel section monitoring point;

[0024] Next, the prism 5 is installed into the connection seat 3 fixed to the monitoring pole 1 through the connecting rod 4; when measuring the settlement, the total station is aligned with the prism 5 to obtain the plane and elevation data. When measuring the clearance convergence, the two ends of the clearance convergence meter are respectively hung on the hooks 2 of the two monitoring poles 1 on the tunnel section, and the clearance convergence data of the tunnel is obtained through the clearance convergence meter.

[0025] With this arrangement, while the total station acquires the three-dimensional coordinate data of the prism 5, the clearance convergence meter can be used to monitor the tunnel clearance convergence of the two monitoring poles 1 on the tunnel section, thereby improving the monitoring efficiency.

[0026] Since the connecting rod 4 is threadedly connected to the connecting seat 3, the prism 5 can be recycled and reused, which is beneficial to reducing costs.

[0027] In order to achieve the 360° adjustment of the prism 5 and improve the adaptability, Figure 2 As shown, the prism 5 includes a lens body 51 and a lens frame 52 arranged on the periphery of the lens body 51;

[0028] In the vertical direction, a vertical transfer shaft 53 is provided on the mirror frame 52, the vertical transfer shaft 53 is parallel to the monitoring rod 1, and both ends of the vertical transfer shaft 53 are movably mounted on the connecting rod 4;

[0029] In the transverse direction, transverse transfer shafts 54 are provided on both sides of the mirror body 51 , and the transverse transfer shafts 54 are movably mounted on the mirror frame 52 .

[0030] During the monitoring process, the purpose of adjusting the position of the prism can be achieved by rotating the vertical transfer shaft 53 around its axis and the horizontal transfer shaft 54 ​​around its axis.

[0031] In order to facilitate the insertion of the monitoring rod 1 into the monitoring point of the tunnel section, the front end of the monitoring rod 1 is a conical head.

[0032] In order to reduce the overall weight of the monitoring pole 1, facilitate construction, and reduce the impact of the monitoring pole 1 on the tunnel, the monitoring pole 1 is a stainless steel pipe.

Claims

1. Tunnel monitoring bracket, characterized by: The monitoring rod (1) comprises a connecting seat (3) fixed on the outer wall of the monitoring rod (1); a threaded through hole penetrating the connecting seat (3) is provided on the connecting seat (3); the threaded through hole is axially perpendicular to the monitoring rod (1); a connecting rod (4) is threadedly connected to the threaded through hole; one end of the connecting rod (4) is connected to a prism (5); and a hook (2) is provided at the end of the monitoring rod (1).

2. The tunnel monitoring bracket according to claim 1, characterized in that: The prism (5) comprises a lens body (51) and a lens frame (52) arranged on the periphery of the lens body (51); In the vertical direction, a vertical transfer shaft (53) is provided on the mirror frame (52), the vertical transfer shaft (53) is parallel to the monitoring rod (1), and both ends of the vertical transfer shaft (53) are movably mounted on the connecting rod (4); In the transverse direction, transverse transfer shafts (54) are arranged on both sides of the mirror body (51), and the transverse transfer shafts (54) are movably mounted on the mirror frame (52).

3. The tunnel monitoring bracket according to claim 1 or 2, characterized in that: The front end of the monitoring rod (1) is a conical head.

4. The tunnel monitoring bracket according to claim 1 or 2, characterized in that: The monitoring rod (1) is a stainless steel pipe.

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