Tunnel shield segment settlement monitoring system

Abstract

The utility model discloses a tunnel shield segment settlement monitoring system, belongs to the technical field of shield tunnels, and solves the problems that displacement sensors of an existing device are arranged on opposite end faces of two connected shield tunnel segments, when the segments are settled and deviated, the displacement sensors are easy to be extruded and damaged, the pressure of soil around the segments cannot be detected, and the construction cost is low. The device comprises a duct piece, an earth pressure sensor is fixedly installed in the middle of the outer surface of the duct piece, the earth pressure sensor is communicated with a data acquisition instrument through a wire, installation grooves distributed in an annular array mode are formed in the end face of the duct piece, an inclination angle vibration monitor is further arranged on the end face of the duct piece, and the inclination angle vibration monitor is connected with the data acquisition instrument through a wire. The settlement reason can be conveniently judged through the soil pressure sensor, the inclination angle and the vibration condition of the duct piece can be detected through the inclination angle vibration monitor so that countermeasures can be conveniently taken in time, and the displacement sensor can be protected by arranging the fixed end and the movable end of the displacement sensor in the mounting groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shield tunnel technical field, concretely to a tunnel shield segment settlement monitoring system. BACKGROUND

[0002] The shield segment plays a key role in shield construction, mainly bears the resistance to soil pressure, groundwater pressure and some special load, is an important component of tunnel permanent lining structure, directly influences the overall quality and safety of the tunnel, therefore needs to find the trend of segment settlement in time and carries out the response in time.

[0003] Through the search, the application number of patent application 201922447011.5 is disclosed in a kind of shield tunnel segment settlement monitoring alarm system, including monitoring system and alarm system;Monitoring system includes pore water pressure sensor, first displacement sensor and data acquisition instrument;Pore water pressure sensor is arranged in the soil of different positions of tunnel;First displacement sensor is arranged between the outer surface of tunnel segment and the soil outside segment;Pore water pressure sensor and first displacement sensor are connected with data acquisition instrument by wired or wireless mode;Alarm system includes alarm controller, alarm and alarm map of display abnormal area position;Alarm controller receives signal from monitoring system, and output signal to alarm and alarm map;

[0004] Although the shield tunnel segment settlement monitoring alarm system detects the displacement of segment and the water pressure around it by displacement sensor and pore water pressure sensor, sends detection result to alarm controller in time by data acquisition instrument, and issues alarm signal in time to inform relevant personnel to take measures by alarm controller, but the displacement sensor of the shield tunnel segment settlement monitoring alarm system is arranged on the opposite end face of two connected shield tunnel segments, when segment settlement deviates, displacement sensor is easily squeezed and damaged, and the soil pressure around segment cannot be detected, which is not convenient for analyzing the reason of segment settlement.

[0005] Therefore, we propose a kind of tunnel shield segment settlement monitoring system. UTILITY MODEL CONTENT

[0006] In view of the deficiencies of prior art, the utility model provides a kind of tunnel shield segment settlement monitoring system, solve the problems that displacement sensor of existing device is arranged on the opposite end face of two connected shield tunnel segments, when segment settlement deviates, displacement sensor is easily squeezed and damaged, and the soil pressure around segment cannot be detected, which is not convenient for analyzing the reason of segment settlement.

[0007] In order to achieve the above object, the utility model discloses a tunnel shield segment settlement monitoring system, including the segment, the end surface of segment is provided with displacement sensor, the outside of segment is provided with pore water pressure sensor, pore water pressure sensor is linked with data acquisition instrument through wire, data acquisition instrument is linked with alarm controller through wire, alarm controller still has alarm and electronic alarm map through wire communication, the electronic alarm map draws according to the actual map of tunnel, and the position of each monitoring point of tunnel is marked on it;

[0008] The middle part of the outer surface of the segment is fixedly installed with a soil pressure sensor, the soil pressure sensor is connected with the data acquisition instrument through wires, the end surface of the segment is provided with a plurality of installation grooves arranged in a ring array, and an inclination vibration monitor is also arranged on the end surface of the segment.

[0009] The inclination vibration monitor is fixedly installed on the inner wall of the uppermost installation groove, and the inclination vibration monitor is connected with the data acquisition instrument through wires.

[0010] Preferably, the soil pressure sensor is arranged in six, and the six soil pressure sensors are arranged in a ring array on the outer surface of the segment.

[0011] Preferably, the pore water pressure sensor is arranged in the soil outside the segment and arranged in a ring array along the middle part of the outer surface of the segment.

[0012] Preferably, the displacement sensor comprises a fixed end and a moving end, and the moving end and the fixed end are respectively fixedly installed in the installation grooves on the end surfaces of two adjacent segments.

[0013] The utility model provides a tunnel shield segment settlement monitoring system.

[0014] 1. The tunnel shield segment settlement monitoring system can detect the water pressure around the segment through the pore water pressure sensor, detect the soil pressure around the segment through the soil pressure sensor, achieve the purpose of facilitating the judgment of the settlement reason, detect the inclination angle and vibration condition of the segment through the inclination vibration monitor, so as to make timely response measures, and solve the problems that the existing device cannot detect the soil pressure around the segment and is inconvenient for analyzing the segment settlement reason.

[0015] 2. The tunnel shield segment settlement monitoring system has the fixing end and the moving end of the displacement sensor arranged in the installation groove on the end face of the segment, and the displacement sensor is not extruded when the segment settles, which is beneficial to protect the displacement sensor, and solves the problem that the displacement sensor of the existing device is arranged on the opposite end faces of two connected shield tunnel segments, and is easily extruded and damaged when the segment settles. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structural schematic view of the utility model;

[0017] Fig. 2 It is a plane structural schematic view of the utility model;

[0018] Fig. 3 It is a monitoring system structural schematic view of the utility model.

[0019] In the figure: 1, segment; 11, installation groove; 2, inclination vibration monitor; 3, displacement sensor; 4, soil pressure sensor; 5, pore water pressure sensor; 6, data acquisition instrument; 7, alarm controller; 8, alarm; 9, electronic alarm map. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Embodiment 1:

[0022] As Figs. 1-3As shown: including the segment 1, the end surface of the segment 1 is provided with displacement sensor 3, the outside of the segment 1 is provided with pore water pressure sensor 5, pore water pressure sensor 5 is connected with data acquisition instrument 6 through wire, data acquisition instrument 6 is connected with alarm controller 7 through wire, alarm controller 7 is also connected with alarm 8 and electronic alarm map 9 through wire, electronic alarm map 9 is drawn according to the actual map of tunnel, and the position of each monitoring point of tunnel is marked on it, the middle part of the outer surface of segment 1 is fixedly installed with earth pressure sensor 4, earth pressure sensor 4 is connected with data acquisition instrument 6 through wire, the end surface of segment 1 is provided with the installation groove 11 distributed in annular array, the end surface of segment 1 is also provided with inclination vibration monitor 2, inclination vibration monitor 2 is fixedly installed on the inner wall of the installation groove 11 located at the top, inclination vibration monitor 2 is connected with data acquisition instrument 6 through wire, earth pressure sensor 4 is provided with six, and the six earth pressure sensors 4 are distributed in annular array on the outer surface of segment 1, pore water pressure sensor 5 is arranged in the soil outside segment 1 and is distributed in annular array along the middle part of the outer surface of segment 1, the water pressure around segment 1 can be detected by pore water pressure sensor 5, the pressure of the soil around segment 1 can be detected by earth pressure sensor 4, so as to conveniently judge the reason of settlement, the inclination angle and vibration condition of segment 1 can be detected by inclination vibration monitor 2, so as to make response measures in time.

[0023] Embodiment 2:

[0024] As Figs. 1-2 shown: displacement sensor 3 includes fixed end and mobile end, mobile end and fixed end are fixedly installed in the installation groove 11 on the end surface of two adjacent segments 1 respectively, by opening installation groove 11 on the end surface of segment 1, and arranging fixed end and mobile end of displacement sensor 3 in the inside of installation groove 11, when segment 1 settles, displacement sensor 3 is not extruded, which is conducive to protecting displacement sensor 3.

[0025] The working principle and use process of the utility model: the tunnel shield segment settlement monitoring system, when using, whether segment 1 settles is detected by displacement sensor 3, when segment 1 settles, the distance of fixed end and mobile end of displacement sensor 3 changes, and information is transmitted to data acquisition instrument 6, displacement information is transmitted to alarm controller 7 by data acquisition instrument 6, alarm is sent by controlling alarm 8, and the position of segment 1 that settles is displayed on electronic alarm map 9, the water pressure around segment 1 can be detected by pore water pressure sensor 5, the pressure of the soil around segment 1 can be detected by earth pressure sensor 4, so as to conveniently judge the reason of settlement, the inclination angle and vibration condition of segment 1 can be detected by inclination vibration monitor 2.

[0026] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A tunnel shield segment settlement monitoring system, comprising a segment (1), a displacement sensor (3) is arranged on the end face of the segment (1), and a pore water pressure sensor (5) is arranged outside the segment (1). characterized in that A soil pressure sensor (4) is fixedly installed on the middle part of the outer surface of the segment (1), and the soil pressure sensor (4) is connected in communication with a data acquisition instrument (6) through a wire; a mounting groove (11) in a ring array is formed on the end face of the segment (1), and an inclination vibration monitor (2) is further arranged on the end face of the segment (1), the inclination vibration monitor (2) is fixedly installed on the inner wall of the uppermost mounting groove (11), and the inclination vibration monitor (2) is connected in communication with the data acquisition instrument (6) through a wire.

2. The tunneling shield segment settlement monitoring system of claim 1, wherein: The soil pressure sensor (4) is provided in six, and the six soil pressure sensors (4) are arranged in a ring array on the outer surface of the segment (1).

3. The tunneling shield segment settlement monitoring system of claim 1, wherein: The pore water pressure sensor (5) is arranged in the soil outside the segment (1) and in a ring array along the middle part of the outer surface of the segment (1).

4. The tunneling shield segment settlement monitoring system of claim 1, wherein: The displacement sensor (3) comprises a fixed end and a moving end, and the moving end and the fixed end are respectively fixedly installed in the mounting grooves (11) on the end faces of two adjacent segments (1).

5. The tunneling shield segment settlement monitoring system of claim 1, wherein: The pore water pressure sensor (5) is connected in communication with the data acquisition instrument (6) through a wire, and the data acquisition instrument (6) is connected in communication with an alarm controller (7) through a wire.

6. The tunneling shield segment settlement monitoring system of claim 5, wherein: The alarm controller (7) is further connected in communication with an alarm (8) and an electronic alarm map (9) through a wire, the electronic alarm map (9) is drawn according to the actual map of the tunnel, and the positions of various monitoring points of the tunnel are marked thereon.

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