CN218329904U - A Settlement Observation Device for Subway Interval Tunnel - Google Patents

Abstract

A subsidence observation device for a subway section tunnel, comprising a first fixed plate fixed on the tunnel wall, a second fixed plate fixed on the ballast bed, an observation tube is arranged above the second fixed plate, and the inside of the observation tube is vertically A guide rod is provided, a horizontal scale line is provided on the front end surface of the observation tube, and a bar-shaped hole is provided in the center of the front end of the observation tube along the vertical direction; an L-shaped connecting rod is fixedly connected to the first fixing plate , the lower end of the L-shaped connecting rod extends into the observation tube, and the lower end of the L-shaped connecting rod is fixed with a slider; A horizontal pointer is connected behind the bar hole, and the horizontal pointer is indicated on the horizontal scale line. The utility model fixedly connects the observation pointer with the tunnel wall, so that if the whole ground subsides, the observation result will not be affected, and the accuracy of the observation data is greatly improved.

Description

A Settlement Observation Device for Subway Interval Tunnel

technical field

The utility model relates to the technical field of underground engineering settlement observation, in particular to a subsidence observation device for tunnels in subway sections.

Background technique

Subway projects are mostly built in underground rock-soil media. The engineering geological conditions and hydrogeological conditions are complex and have many uncertainties. With the increase of the operating life or other specific factors, settlement deformation will occur, and excessive settlement deformation will lead to secondary Therefore, it is necessary to observe the settlement of subway tunnels.

The existing subsidence observation devices for tunnels in subway sections are usually directly fixed on the ground. If the ground subsides as a whole, the observation results will be affected, and the accuracy is low. Moreover, the process of collecting measurement data is complex, time-consuming and inefficient.

Utility model content

The utility model provides a subsidence observation device for tunnels in subway intervals, which overcomes the disadvantage of low accuracy of observation results caused by overall subsidence of the ground.

The technical solution adopted by the utility model is: a subsidence observation device for tunnels in subway intervals, comprising a first fixed plate fixed on the tunnel wall and a second fixed plate fixed on the ballast bed, above the second fixed plate is arranged An observation tube, a guide rod is vertically provided in the observation tube, a horizontal scale line is provided on the front end surface of the observation tube, and a bar-shaped hole is provided in the center of the front end of the observation tube along the vertical direction; the first An L-shaped connecting rod is fixedly connected to the fixed plate, and the lower end of the L-shaped connecting rod extends into the observation tube, and the lower end of the L-shaped connecting rod is fixed with a slider; the slider is set on the guide rod and can slide freely up and down. And the center of the front end of the slider protrudes from the bar-shaped hole and is connected with a horizontal pointer, and makes the horizontal pointer indicate on the horizontal scale line.

A lead screw is vertically installed on the first fixing plate, the upper end of the L-shaped connecting rod is threadedly connected to the lead screw, and the L-shaped connecting rod is driven to move up and down by rotating the lead screw.

Two screw rods are fixed on the second fixing plate, and the observation tube is respectively set on the two screw rods through the ear plates and nuts on both sides, and the position of the nuts clamped on the upper and lower sides of the ear plate is adjusted by adjusting the positions of the two screw rods. The height of the observation tube.

The upper and lower ends of the observation tube are fixed with dust-proof plates, and the front end of the observation tube is fixed with a transparent dust-proof cover, and the horizontal scale line and the horizontal pointer are located in the transparent dust-proof cover.

Compared with the prior art, the utility model has the beneficial effects:

1. The utility model fixedly connects the observation pointer to the tunnel wall. If the ground subsides as a whole, it will not affect the observation results, which greatly improves the accuracy of the observation data.

2. The utility model can conveniently and quickly adjust the initial position of the observation pointer to be flush with the reference level, so that the initial values of the observation devices at all observation points are set to zero, and the collection of observation data is simple, convenient and fast, reducing the number of surveyors Quantity, which improves the measurement efficiency is low.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a schematic sectional view showing the structure at A-A place in Fig. 1;

Fig. 3 is a schematic cross-sectional view of the structure at B-B in Fig. 1 .

detailed description

The utility model will be described in detail below in conjunction with accompanying drawings 1-3 and specific embodiments.

A subsidence tunnel settlement observation device in a subway section, comprising a first fixed plate 1 fixed on the tunnel wall, a second fixed plate 2 fixed on the ballast bed, an observation cylinder 3 is arranged above the second fixed plate 2, and the observation tube 3 is arranged above the second fixed plate 2. A guide rod 7 is vertically provided in the cylinder 3, a horizontal scale line 3-1 is provided on the front end surface of the observation cylinder 3, and a bar-shaped hole 3-2 is provided in the center of the front end of the observation cylinder 3 along the vertical direction; The first fixed plate 1 is fixedly connected with an L-shaped connecting rod 5, the lower end of the L-shaped connecting rod 5 extends into the observation tube 3, and the lower end of the L-shaped connecting rod 5 is fixed with a slider 8; The block 8 is set on the guide rod 7 and can slide freely up and down, and the front center of the slider 8 protrudes from the strip hole 3-2 and is connected with a horizontal pointer 6, and the horizontal pointer 6 is indicated on the horizontal scale line 3 -1 on.

In order to prevent dust from entering the observation tube, the upper and lower ends of the observation tube 3 are fixed with dust-proof plates 11, and the front end of the observation tube 3 is fixed with a transparent dust-proof cover 12, and the horizontal scale line 3-1, the horizontal pointer 6 is located in the transparent dust cover 12.

In the first embodiment, a lead screw 4 is installed vertically on the first fixing plate 1, and the upper end of the L-shaped connecting rod 5 is screwed on the lead screw 4, and the L-shaped connecting rod 4 is driven by rotating the lead screw 4. The type connecting rod 5 moves up and down, and then drives the slider 8 to move up and down along the guide rod 7, so that the initial state of the horizontal pointer 6 is flush with the reference level.

In the second embodiment, two screw rods 9 are fixed on the second fixing plate 2, and the observation tube 3 is respectively sleeved on the two screw rods 9 through the ear plates 3-3 and nuts 10 on both sides thereof. Adjust the height of the observation tube 3 by adjusting the position of the nuts 10 clamped on the upper and lower sides of the lug plate 3-3, and then drive the horizontal scale line 3-1 to move up and down, so that the initial state of the horizontal pointer 6 is equal to the reference level together.

Of course, the adjustment methods of the above two embodiments can also be combined to form a third embodiment, so that the adjustment range is wider and the accuracy is higher.

When in use, the device is installed at all monitoring points in the subway tunnel, and the reference level is used as the zero scale of the horizontal scale line 3-1, and then the initial state of the horizontal pointer 6 is adjusted to the zero scale, so that all The initial value of the observation device at the observation point is set to zero, and then at the specified observation time point, the change amount of each observation device pointer in the interval relative to the initial value is recorded to obtain the tunnel settlement value, and then judge the settlement change of the tunnel , In daily observation records, only one surveyor can complete the collection and recording of observation data, which makes settlement observation more convenient and faster.

The above-described embodiments are only preferred embodiments of the present utility model, and are not used to limit the scope of implementation of the present utility model, so all equivalent changes made with the contents of the claims of the present utility model should be included in the claims of the present utility model. within the scope of requirements.

Claims (4)

1. The utility model provides an observation device is subsided to tunnel between subway which characterized in that: the tunnel observation device comprises a first fixing plate (1) fixed on the tunnel wall and a second fixing plate (2) fixed on a ballast bed, wherein an observation tube (3) is arranged above the second fixing plate (2), a guide rod (7) is vertically arranged in the observation tube (3), a horizontal scale mark (3-1) is arranged on the front end face of the observation tube (3), and a strip-shaped hole (3-2) is formed in the center of the front end of the observation tube (3) along the vertical direction; the first fixing plate (1) is fixedly connected with an L-shaped connecting rod (5), the lower end of the L-shaped connecting rod (5) extends into the observation cylinder (3), and a sliding block (8) is fixed at the lower end of the L-shaped connecting rod (5); the sliding block (8) is sleeved on the guide rod (7) and can freely slide up and down, the center of the front end of the sliding block (8) protrudes out of the strip-shaped hole (3-2) and then is connected with a horizontal pointer (6), and the horizontal pointer (6) is enabled to indicate on the horizontal scale mark (3-1).

2. The inter-subway tunnel settlement observation device according to claim 1, wherein: the lead screw (4) is vertically installed on the first fixing plate (1), the upper end of the L-shaped connecting rod (5) is in threaded connection with the lead screw (4), and the lead screw (4) drives the L-shaped connecting rod (5) to move up and down.

3. The inter-subway tunnel settlement observation device according to claim 1 or 2, wherein: two screw rods (9) are fixed on the second fixing plate (2), the observation tube (3) is respectively sleeved on the two screw rods (9) through lug plates (3-3) arranged on two sides of the observation tube and nuts (10), and the height of the observation tube (3) is adjusted by adjusting the positions of the nuts (10) clamped on the upper side and the lower side of the lug plates (3-3).

4. The inter-subway tunnel settlement observation device according to claim 3, wherein: the dust guard (11) is fixed at the upper end and the lower end of the observation cylinder (3), the transparent dust guard (12) is fixed at the front end of the observation cylinder (3), and the horizontal scale marks (3-1) and the horizontal pointer (6) are located in the transparent dust guard (12).

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