CN113446954A

CN113446954A - Automatic deformation monitoring system suitable for shaft shield constructs

Info

Publication number: CN113446954A
Application number: CN202110715957.4A
Authority: CN
Inventors: 钟庆丰; 魏云豹; 刘恒杰; 齐保卫; 蒲晓波; 焦敬波; 孙浩
Original assignee: China Railway Engineering Equipment Group Technology Service Co Ltd
Current assignee: China Railway Engineering Equipment Group Technology Service Co Ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2021-09-28

Abstract

The invention discloses an automatic deformation monitoring system suitable for a vertical shaft shield, which comprises a ground detection device and an underground detection device; the ground detection device comprises a total station arranged on a ground fixed base station, a plurality of derrick monitoring prisms arranged on a derrick and a plurality of wellhead monitoring prisms arranged on the ground around a wellhead; the underground detection device comprises a plurality of laser range finders arranged on a well wall; the laser range finders are arranged at equal intervals along the depth direction of the well wall, and a plurality of laser range finders are uniformly distributed on each well wall at the same height; the total station and the laser range finder are respectively connected with a central controller through cables, and radio stations are arranged on the total station and the central controller; the central controller is connected with an industrial computer.

Description

Automatic deformation monitoring system suitable for shaft shield constructs

Technical Field

The invention relates to the technical field of tunnel tunneling, in particular to an automatic deformation monitoring system suitable for a vertical shaft shield.

Background

At present, with the rapid development of infrastructure of the country, the rapid construction of infrastructures such as subways, electric power, water diversion and the like, various types of heading machines suitable for underground space excavation are researched and manufactured; wherein the shaft boring machine is a TBM equipment which excavates vertically downwards. The shaft heading machine has wide excavation surface and deep excavation depth, so that the condition of a deep foundation pit is formed, and the displacement and deformation conditions of structures around a shaft, a shaft derrick, the ground around the foundation pit and the wall of an excavated and formed shaft can be generated, thereby causing great potential safety hazards; therefore, a system and method for simultaneously detecting the displacement deformation of the ground and the underground are needed.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a method which can realize the displacement deformation monitoring function on the ground structures, the periphery of a foundation pit, the completed tunnel wall and other parts in the implementation process of a vertical shaft, monitor the unsafe state in the whole tunneling process of the vertical shaft, realize the safety early warning function and avoid causing serious safety problems.

In order to achieve the purpose, the invention adopts the following technical scheme:

an automatic deformation monitoring system suitable for a vertical shaft shield comprises a ground detection device and an underground detection device;

the ground detection device comprises a total station arranged on a ground fixed base station, a plurality of derrick monitoring prisms arranged on a derrick and a plurality of wellhead monitoring prisms arranged on the ground around a wellhead; the derrick monitoring prisms are respectively arranged at the edge of each layer of the derrick and at the supporting feet of the derrick; the wellhead monitoring prisms are respectively fixedly arranged on the ground around the wellhead and comprise prism bases, prism support rods vertically arranged on the prism bases and prisms arranged at the top ends of the prism support rods;

the underground detection device comprises a plurality of laser range finders arranged on a well wall; the laser range finders are arranged at equal intervals along the depth direction of the well wall, and a plurality of laser range finders are uniformly distributed on each well wall at the same height;

the total station and the laser range finder are respectively connected with a central controller through cables, and radio stations are arranged on the total station and the central controller; the central controller is connected with an industrial computer.

The principle of the invention is as follows: the invention is divided into two parts, the first part: the ground adopts 1 total station and a plurality of prisms for combination, the total station is fixed at a position far away from the construction area of the shaft, and the three-dimensional space coordinates (x) of the fixed prisms arranged on the shaft derrick and the structure of the shaft is measured_i＝1,2,3...，y_i＝1,2,3...，z_i＝1,2,3...) Periodically measuring the three-dimensional coordinates of each fixed prism, transmitting monitoring data to a central controller through a radio station, performing information interaction with an industrial computer through the central controller, and finally calculating the space displacement variation of each prism

And displaying the early warning state in the monitoring system, and displaying green if the early warning state is within a set threshold range, and displaying red if the early warning state is not within the set threshold range.

A second part: and monitoring the deformation of the rock wall of the formed vertical shaft, wherein a laser ranging measuring device with an R458 communication function is adopted, and the device is fixedly arranged at the position of a cross section of 10 meters in a crossed manner to monitor the displacement change among four points on the circumference.

The invention has the beneficial effects that: 1) the omnibearing synchronous deformation monitoring on the ground and underground is realized;

2) full-automatic timing monitoring is realized, and full automation is realized; 3) the laser range finder with R485 communication is adopted, so that the cost is low and the monitoring precision is high; 4) non-professional personnel can get on hand through simple training, easy operation reduces the dependence to professional.

Drawings

Fig. 1 is a schematic structural diagram of a ground detection device according to the present invention.

FIG. 2 is a schematic diagram of the downhole testing apparatus of the present invention.

Fig. 3 is a schematic structural diagram of a wellhead monitoring prism.

Fig. 4 is a schematic sectional structure view of fig. 2.

Fig. 5 is a schematic diagram of the ground detection apparatus.

FIG. 6 is a main interface diagram of the data detection system of the central controller according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are not to be construed as limiting the present invention.

As shown in fig. 1 to 4, the automatic deformation monitoring system for the shaft shield of the present embodiment includes a ground detection device and a downhole detection device.

As shown in fig. 1 and 3, the ground detection apparatus in this embodiment includes a total station 1 disposed on a ground fixed base station, a plurality of derrick monitoring prisms 2 disposed on a derrick, and a plurality of wellhead monitoring prisms 3 disposed on the ground around a wellhead; the derrick monitoring prism 2 is respectively arranged at the edge of each layer of the derrick and at the supporting feet of the derrick; the wellhead monitoring prisms 3 are respectively fixedly arranged on the ground around the wellhead, and each wellhead monitoring prism 3 comprises a prism base 3-1, a prism support rod 3-2 vertically arranged on the prism base and a prism 3-3 arranged at the top end of the prism support rod; the ground detection device adopts a combination of 1 total station and a plurality of prisms, the total station is fixed at a position far away from a shaft construction area, and three-dimensional space coordinates (x) of the total station are measured for fixed prisms arranged on a shaft derrick and a structure_i＝1,2,3...，y_i＝1,2,3...，z_i＝1,2,3...) Periodically measuring the three-dimensional coordinates of each fixed prism, transmitting monitoring data to a central control box through a radio station, performing information interaction with an industrial computer through a central controller, and finally calculating the space displacement variable quantity of each prism through monitoring software

And displaying the early warning state in the monitoring system whether the early warning state is within the set threshold rangeIf "yes", green is displayed, and if "no", red is displayed.

As shown in fig. 2 and 4, the downhole detection device of the present embodiment includes a plurality of laser range finders 4 disposed on the borehole wall; the laser range finders 4 are arranged at equal intervals along the depth direction of the well wall, and two laser range finders are uniformly distributed on each well wall at the same height; the laser range finder adopts a laser range measurement device with an R458 communication function, and is fixedly installed in a cross shape at the position of a cross section of 10 meters, so that displacement change among four points on the circumference is monitored.

The total station 1 and the laser range finder 4 are respectively connected with a central controller 5 through cables, and radio stations 6 are arranged on the total station and the central controller; the central controller 5 is connected with an industrial computer 7.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides an automatic deformation monitoring system suitable for shaft shield constructs which characterized in that: the underground detection device comprises a ground detection device and an underground detection device;

the ground detection device comprises a total station (1) arranged on a ground fixed base station, a plurality of derrick monitoring prisms (2) arranged on a derrick and a plurality of wellhead monitoring prisms (3) arranged on the ground around a wellhead; the derrick monitoring prisms (2) are respectively arranged at the edges and corners of each layer of the derrick and at the supporting feet of the derrick; the wellhead monitoring prisms (3) are respectively fixedly arranged on the ground around the wellhead, and each wellhead monitoring prism (3) comprises a prism base (3-1), a prism support rod (3-2) vertically arranged on the prism base and a prism (3-3) arranged at the top end of the prism support rod;

the underground detection device comprises a plurality of laser range finders (4) arranged on a well wall; the laser range finders (4) are arranged at equal intervals along the depth direction of the well wall, and a plurality of laser range finders are uniformly distributed on each well wall at the same height;

the total station (1) and the laser range finder (4) are respectively connected with a central controller (5) through cables, and radio stations (6) are arranged on the total station and the central controller; the central controller (5) is connected with an industrial computer (7).