CN113884055A - Dynamic monitoring system and monitoring method for tunnel portal section surface settlement in tunnel construction process - Google Patents
Dynamic monitoring system and monitoring method for tunnel portal section surface settlement in tunnel construction process Download PDFInfo
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Abstract
A dynamic monitoring system and a monitoring method for ground surface settlement at a tunnel portal section in a tunnel construction process comprise a ground surface settlement monitoring network, a master station and an intelligent mobile terminal, wherein the ground surface settlement monitoring network, the intelligent mobile terminal and the master station are in communication connection with the master station through a 5G public network; the ground surface settlement monitoring network comprises a monitoring network host and a photoelectric height gauge assembly, wherein the monitoring network host and the photoelectric height gauge assembly are fixedly arranged at a set position of the ground surface of a monitoring section at an inlet and an outlet of a tunnel and are connected through micro-power wireless communication; when the ground surface settlement monitoring network works, the monitoring network host emits horizontal linear laser in a set period to irradiate on the photoelectric height gauge assembly, and the photoelectric height gauge assembly detects the irradiation position of the horizontal linear laser to realize automatic acquisition of ground surface settlement data at a tunnel portal section in the tunnel construction process; and the earth surface settlement data automatically acquired by the earth surface settlement monitoring network is transmitted to the master station through the 5G public communication network, and dynamic monitoring of the earth surface settlement at the tunnel portal section in the tunnel construction process is realized through data calculation and processing.
Description
Technical Field
The invention relates to the technical field of safety monitoring in a tunnel construction process of hydraulic engineering, in particular to a dynamic monitoring system and a dynamic monitoring method for tunnel portal section surface settlement in the tunnel construction process.
Background
In the construction process of the hydraulic engineering tunnel, the inside and outside conditions of the tunnel need to be dynamically monitored so as to ensure the safety of the construction process of the hydraulic engineering tunnel; the monitoring contents comprise surrounding rock lithology, fault distribution, underground water condition, working surface stable state, support stability, tunnel entrance and construction area ground surface settlement, tunnel face side slope stability, surface water penetration and the like, so the monitoring workload is very huge; however, the monitoring of the internal and external conditions in the construction process of the existing hydraulic engineering tunnel is mostly carried out manually, and the monitoring workload is huge, so that the monitoring can only be carried out in a certain period, and the real-time dynamic monitoring cannot be realized, so that the internal and external conditions of the tunnel cannot be mastered in real time, and a certain potential safety hazard still exists in practice; therefore, how to replace manpower through modern technical means to carry out all-round and real-time dynamic safety monitoring on the hydraulic engineering tunnel construction process is an important problem to be solved urgently in future hydraulic engineering tunnel construction.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses a dynamic monitoring system for the earth surface settlement at a tunnel portal section in the tunnel construction process, which comprises an earth surface settlement monitoring network, a master station and an intelligent mobile terminal, wherein the earth surface settlement monitoring network, the intelligent mobile terminal and the master station are in communication connection with the master station through a 5G public network; the ground surface settlement monitoring network comprises a monitoring network host and a photoelectric height gauge assembly, wherein the monitoring network host and the photoelectric height gauge assembly are fixedly arranged at a set position of the ground surface of a monitoring section at an inlet and an outlet of a tunnel and are connected through micro-power wireless communication; when the ground surface settlement monitoring network works, the monitoring network host emits horizontal linear laser in a set period to irradiate on the photoelectric height gauge assembly, and the photoelectric height gauge assembly detects the irradiation position of the horizontal linear laser to realize automatic acquisition of ground surface settlement data at a tunnel portal section in the tunnel construction process; the surface subsidence data automatically collected by the surface subsidence monitoring network are transmitted to a main station through a 5G public communication network, dynamic monitoring of the surface subsidence at the tunnel entrance section in the tunnel construction process is realized through data calculation processing, and the safety of the hydraulic engineering tunnel construction process is greatly ensured.
In order to realize the purpose, the invention adopts the following technical scheme: a dynamic monitoring system for the earth surface settlement at a tunnel portal section in the tunnel construction process comprises an earth surface settlement monitoring network, a master station and an intelligent mobile terminal, wherein the earth surface settlement monitoring network, the intelligent mobile terminal and the master station are in communication connection with the master station through a 5G public network;
the ground surface settlement monitoring network comprises a monitoring network host and photoelectric height gauge assemblies, wherein the photoelectric height gauge assemblies are provided with a plurality of monitoring network hosts, the plurality of photoelectric height gauge assemblies are fixedly arranged at set positions of the ground surface of a monitoring section at an inlet and an outlet of a tunnel through pre-embedded concrete piles, the monitoring network hosts and the photoelectric height gauge assemblies are connected through micro-power wireless communication, the monitoring network hosts and the photoelectric height gauge assemblies form a micro-power wireless communication network in a master-slave, single-duplex and point-to-point communication mode, the monitoring network hosts initiate in a broadcasting command mode when the monitoring network hosts and the photoelectric height gauge assemblies communicate, the photoelectric height gauge assemblies sequentially respond, and the monitoring network hosts reply confirmation; when the monitoring network host and the photoelectric height gauge assembly are in a discontinuous monitoring mode in a non-communication state, so that the service life of a battery is prolonged; when the photoelectric height gauge component is abnormal, if the battery voltage is too low, the abnormality can be actively reported; when the ground surface settlement monitoring network works, the monitoring network host emits horizontal linear laser in a set period to irradiate on the plurality of photoelectric height gauge assemblies, and the plurality of photoelectric height gauge assemblies detect the irradiation positions of the horizontal linear laser; when the ground surface of the monitoring section of the entrance and exit of the tunnel subsides, the altitude of the plurality of photoelectric height gauge assemblies changes, the positions of linear laser irradiated on the plurality of photoelectric height gauge assemblies also change correspondingly, the variation of the horizontal linear laser irradiation positions detected by the plurality of photoelectric height gauge assemblies is sequentially transmitted to a monitoring network host and a master station through a micro-power wireless and 5G public network, and the master station calculates the variation of the horizontal linear laser irradiation positions of the plurality of photoelectric height gauge assemblies to obtain the overall subsidence condition of the ground surface of the monitoring section of the entrance and exit of the tunnel; the monitoring period of the monitoring network host can be adjusted through the master station, and if the settlement of the ground surface of the monitoring section at the entrance and the exit of the tunnel is found to be close to a set value or the settlement rate is accelerated, the monitoring period of the monitoring network host is adjusted and shortened so as to master the settlement change condition of the ground surface of the monitoring section at the entrance and the exit of the tunnel in real time; in addition, a coded signal is modulated by horizontal linear laser emitted by a monitoring network host so as to enhance the anti-interference capability of the photoelectric height gauge assembly on ambient light;
the intelligent mobile terminal can log in the main station and check the integral settlement condition of the ground surface of the monitoring section at the entrance and the exit of the tunnel at any time.
Furthermore, the monitoring network host comprises a laser level meter and a communication module which are electrically connected, the communication module is actually a main control module of the monitoring network host, the communication module controls the generation of a switch and a modulation signal code of laser emission of the laser level meter and receives an abnormal signal of the level state of the laser level meter and a battery voltage monitoring signal, and when the communication module receives the abnormal signal of the level state of the laser level meter or a signal with too low voltage, the communication module actively reports abnormal information of a main station and informs a worker to recalibrate the level state of the laser level meter on site or replace a new battery; the communication module comprises a singlechip A, a 5G communication module and a micro-power wireless communication module, and the 5G communication module and the micro-power wireless communication module are electrically connected with the singlechip A; the communication module is fixedly arranged at the upper end of the laser level, the lower end of the laser level is provided with a supporting leg, the lower end of the supporting leg is fixedly provided with a laser level bottom plate, and the laser level bottom plate is fixedly connected with a concrete pile pre-buried on site; height adjusting nuts are arranged on the supporting legs and used for adjusting the horizontal state of the monitoring network host.
Further, the photoelectric height gauge assembly comprises a photoelectric height gauge and a height gauge bracket; the photoelectric height gauge is in a long and thin rod shape, and a hemispherical photoelectric height gauge communication module is fixedly arranged at the upper end of the photoelectric height gauge; the height gauge support comprises a support rod, a support bottom plate and a support ring, the support bottom plate is fixedly arranged at the bottom of the support rod, and the support ring is fixedly arranged at the upper end of the support rod; when the photoelectric height gauge assembly works, the photoelectric height gauge is hung on the support ring through the photoelectric height gauge communication module, the antifriction ring is arranged between the photoelectric height gauge communication module and the support ring, and the photoelectric height gauge is always in a vertical state through the matching of the outer spherical surface of the photoelectric height gauge communication module and the inner circular surface of the antifriction ring; it is supplementary to explain that, do not adopt more nimble cross overhang structure between photoelectric height gauge and the tongue support, avoid the connection between photoelectric height gauge and the tongue support too nimble to open-air wind-force makes photoelectric height gauge take place to swing incessantly, thereby causes the unstability of data acquisition.
Further, the photoelectric height gauge comprises a central tube, a photoelectric height gauge module, an optical filter, a protection tube, a photoelectric height gauge communication module and a balancing weight; the photoelectric height gauge module is in a circular tube shape, a plurality of photoelectric height gauge modules are arranged, and the photoelectric height gauge modules are sequentially sleeved on the outer surface of the central tube along the axis of the central tube; the optical filter is sheet-shaped and is wound on the outer surface of the photoelectric height gauge module; the protective tube is in a transparent tubular shape and is sleeved on the outer surface of the optical filter; the photoelectric height gauge communication module is fixedly arranged at the upper end of the protective tube; the balancing weight is fixedly arranged at the lower end of the protective tube; the filter adopts a narrow-band filter, the allowed wavelength is the laser wavelength of the laser level meter, and the purpose is to filter the interference of ambient light to the photoelectric height gauge module so as to improve the anti-interference capability of the system; the function of balancing weight is the focus that reduces photoelectric height chi, and when photoelectric height chi was in the tilt state on the tongue support, it had great drive torque who resumes to the vertical state.
Further, the photoelectric height gauge module comprises a photoelectric sensor inner tube, a photoelectric sensor and an FPC circuit board; the photoelectric sensor is in a film shape, narrow strip-shaped solar cells are arranged on the surface array, the photoelectric sensor wraps the outer surface of the inner tube of the photoelectric sensor in a mode that the narrow strip-shaped solar cells are perpendicular to the axis of the inner tube of the photoelectric sensor, gaps are reserved on two side edges of the photoelectric sensor, which are parallel to the axis of the inner tube of the photoelectric sensor, the FPC circuit board is fixedly arranged at the gaps on the two side edges of the photoelectric sensor, and the FPC circuit board and the photoelectric sensor are electrically connected; the FPC circuit board is electrically connected with the photoelectric height gauge communication module; when the photoelectric height gauge module works, laser irradiation is detected by the strip-shaped solar cells arranged in an array, each strip-shaped solar cell has a position code, when the laser irradiates on one solar cell, the solar cell outputs a weak voltage signal with a modulation code, the FPC circuit board detects the solar cell with the weak voltage signal and determines the position code of the solar cell, namely the position of the laser irradiation on the photoelectric height gauge is determined, and therefore automatic collection of tunnel construction process tunnel portal section ground surface settlement data is achieved.
Furthermore, the outer surface of the protection tube is provided with length scale marks, and the scale marks correspond to the positions of the solar cells arranged on the photoelectric sensor in an array mode, namely correspond to position codes of the solar cells; the length scale marks the lowermost end as "0".
Further, the photoelectric height gauge communication module comprises a communication module shell, a PCB and a top cover; the communication module shell is hollow and hemispherical, the lower part of the communication module shell is provided with a connecting pipe, and the communication module shell is sleeved on the outer surface of the upper end of the protection pipe through the connecting pipe and is fixedly connected with the protection pipe; the PCB board is fixedly arranged in an inner cavity of the communication module shell, and the top cover is fixedly arranged at the top of the communication module shell.
Further, the FPC circuit board comprises an analog switch, a sampling module, a signal amplification and filtering module and a single chip microcomputer C, wherein the analog switch, the sampling module, the signal amplification and filtering module and the single chip microcomputer C are electrically connected in sequence; when the photoelectric height gauge module works, the singlechip C sequentially outputs the position codes of the solar cells to the analog switch from bottom to top in a set period, and the analog switch sequentially connects the solar cells with the sampling module according to the position codes; when the analog switch is connected with a solar cell irradiated by laser, the sampling module outputs a modulated and coded weak voltage signal, the signal is transmitted to the signal amplification and filtering module for processing and then transmitted to the singlechip C, the singlechip C identifies the coded signal, confirms that the solar cell corresponding to the output position code at the moment is a laser irradiation position, and calculates a scale marking indicating value of the photoelectric height gauge component corresponding to the laser irradiation position;
the PCB comprises a singlechip B and a micropower wireless communication module B which are electrically connected;
the singlechip C of the FPC board is electrically connected with the singlechip B of the PCB board.
A monitoring method based on a tunnel construction process portal section earth surface settlement dynamic monitoring system comprises the following steps:
s1, setting a ground surface settlement monitoring net: the monitoring network host and the photoelectric height gauge assembly are fixedly arranged at a set position on the earth surface of a monitoring section at an inlet and an outlet of a tunnel according to design requirements, and each monitoring section comprises a plurality of monitoring points and a rear view point;
s2, initializing the surface subsidence monitoring net: the monitoring network host sends out an initialization broadcast instruction and horizontal linear laser to irradiate on each photoelectric height gauge assembly arranged at a ground surface monitoring point and a rear viewpoint of a monitoring section at an inlet and an outlet of a tunnel; each photoelectric height gauge component detects self horizontal linear laser irradiation position information Bn(X0,Y0)、Tm(x0,y0) (ii) a Wherein B represents the rear viewpoint laser irradiation position information; the corner mark n is the rear view point serial number; x is the arrangement serial number of the photoelectric sensors from bottom to top; y is the arrangement serial number of the solar cells on the photoelectric sensor from bottom to top; the corner mark 0 represents initial acquisition information; t represents the laser irradiation position information of the monitoring point; the corner mark m is the monitoring point serial number; x is the arrangement serial number of the photoelectric sensors from bottom to top; y is the arrangement serial number of the solar cells on the photoelectric sensor from bottom to top; the corner mark 0 represents initial acquisition information; each lightThe electric height gauge component acquires self-initialized horizontal linear laser irradiation position information Bn(X0,Y0) Or Tm(x0,y0) Is converted into a value indicated by the corresponding scale mark of the photoelectric height gauge component (1.2)
Or
The information is stored in a communication module of the photoelectric height gauge per se to complete initialization;
Bn(X0,Y0)、Tm(x0,y0) The calculation formula for converting the scale mark indication value corresponding to the photoelectric height gauge assembly is as follows:
wherein
Indicating scale marking indicating values irradiated by laser of the photoelectric height gauge assembly with the rear view point serial number n during initialization;
indicating scale marking indicating values irradiated by laser of the photoelectric height gauge assembly with the monitoring point serial number m during initialization; k is the length conversion coefficient of the photoelectric height gauge module; k is the length conversion coefficient of the solar cell;
after the initialization of each photoelectric height gauge component is completed, the photoelectric height gauge component is initialized through micro-power wireless
Or
Transmitting to a monitoring network host; when the monitoring network host receives the initialization of all the photoelectric height gauge assemblies
Or
When the laser is started, sending an initialization ending broadcast instruction, and closing to emit horizontal linear laser; the monitoring network host computer initializes the received information via the 5G public network
Or
Transmitting to a master station for storage;
s3, dynamically monitoring the ground surface settlement monitoring network: the monitoring network host sends out a detection broadcast instruction according to a set monitoring period and sends out horizontal linear laser to irradiate on each photoelectric height gauge assembly arranged at a ground surface monitoring point and a rear viewpoint of a monitoring section at an entrance and an exit of a tunnel; each photoelectric height gauge component detects self horizontal linear laser irradiation position information Bn(Xi,Yi)、Tm(xi,yi) (ii) a Wherein, the corner mark i is the serial number of the detection period; each photoelectric height gauge component (1.2) acquires the irradiation position information B of the self horizontal linear lasern(Xi,Yi) Or Tm(xi,yi) Convert into indicating value L that photoelectric height chi subassembly corresponds scale marki BnOr Li TmAnd wirelessly transmitting the data to a monitoring network host through micropower;
Bn(Xi,Yi)、Tm(xi,yi) The calculation formula for converting the scale mark indication value corresponding to the photoelectric height gauge assembly is as follows:
Li Bn＝K(Xi-1)+kYi，
Li Tm＝K(xi-1)+kyi；
wherein L isi BnIndicating scale marking indicating values irradiated by the laser of the photoelectric height gauge assembly with the viewpoint sequence number n after the monitoring period i; l isi TmIndicating the scale marking indicating value of laser irradiation of the photoelectric height gauge assembly with the monitoring point serial number m in the monitoring period i; k is the length conversion coefficient of the photoelectric height gauge module; k is the length conversion coefficient of the solar cell;
when the monitoring network host receives L in the current monitoring period returned by all the photoelectric height gauge assembliesi BnOr Li TmWhen the laser beam is transmitted, sending a broadcast instruction of ending the monitoring period of the current round, and closing to transmit the horizontal linear laser; the monitoring network host computer receives the L in the current monitoring period through the 5G public networki BnOr Li TmTransmitting to a master station;
s4, calculating the earth surface settlement of the monitoring section of the tunnel entrance/exit: the calculation of the settlement of the earth surface of the monitoring section of the entrance and the exit of the tunnel is completed at the main station; the calculation formula of the earth surface settlement of the monitoring section of the entrance and the exit of the tunnel is as follows:
wherein
And (4) representing the settlement amount of the photoelectric height gauge component with the monitoring point serial number of m in the ith monitoring period.
S5, displaying and alarming the settlement of the ground surface of the monitored section of the tunnel entrance and exit: the main station vividly and intuitively displays the settlement condition and the change rate of the earth surface of the monitoring section of the entrance and the exit of the tunnel in the form of a graph and a table at each monitoring point of the monitoring section of the entrance and the exit of the tunnel; the main station is provided with a tunnel entrance and exit monitoring section settlement amount and a settlement rate alarm threshold, and when the tunnel entrance and exit monitoring section settlement amount and the settlement rate exceed the set threshold, an alarm signal is sent out; and the alarm signal is synchronously transmitted to the intelligent mobile terminal.
Further, the monitoring period of the surface settlement monitoring network can be modified by sending an instruction to a monitoring network host through the master station; for example, when the settlement of the ground surface of the monitoring section of the entrance and the exit of the tunnel is close to a set value or the settlement rate is accelerated, the monitoring period of the monitoring network host is shortened through the adjustment of the master station, so that the settlement change condition of the ground surface of the monitoring section of the entrance and the exit of the tunnel can be mastered in real time.
Due to the adoption of the technical scheme, the invention has the following beneficial effects: the invention discloses a dynamic monitoring system for tunnel construction process portal section ground surface settlement, which comprises a ground surface settlement monitoring network, a master station and an intelligent mobile terminal, wherein the ground surface settlement monitoring network, the intelligent mobile terminal and the master station are in communication connection with the master station through a 5G public network; the ground surface settlement monitoring network comprises a monitoring network host and a photoelectric height gauge assembly, wherein the monitoring network host and the photoelectric height gauge assembly are fixedly arranged at a set position of the ground surface of a monitoring section at an inlet and an outlet of a tunnel and are connected through micro-power wireless communication; when the ground surface settlement monitoring network works, the monitoring network host emits horizontal linear laser in a set period to irradiate on the photoelectric height gauge component, and the photoelectric height gauge component detects the irradiation position of the horizontal linear laser; when monitoring section earth's surface subsides appear being imported and exported to the tunnel, the altitude that photoelectric height chi subassembly set up changes along with taking place, the linear laser shines the position on a plurality of photoelectric height chi subassembly and also takes place corresponding change, the horizontal line form laser that photoelectric height chi subassembly detected out shines the change of position, the main website is transmitted to this change transmission, through data calculation processing, realize tunnel work progress tunnel mouth of a river section earth's surface settlement dynamic monitoring to make hydraulic engineering tunnel work progress's security obtain very big assurance.
Drawings
FIG. 1 is a schematic view of a dynamic monitoring system for tunnel portal section surface settlement during tunnel construction;
FIG. 2 is a schematic diagram of the actual arrangement position of a surface settlement monitoring net;
FIG. 3 is a schematic view of the appearance of a monitoring network host;
FIG. 4 is a schematic block diagram of a monitoring network host computer;
FIG. 5 is an external view of the photoelectric height gauge assembly;
FIG. 6 is an external view of the height gauge stand;
FIG. 7 is a schematic view of a fitting structure of the photoelectric height gauge and the height gauge bracket;
FIG. 8 is a partially enlarged schematic view of a fitting structure of the photoelectric height gauge and the height gauge bracket;
FIG. 9 is an exploded view of the mounting structure of the photoelectric height gauge;
FIG. 10 is an exploded view of the photoelectric height gauge module assembly structure;
fig. 11 is an exploded view of an assembly structure of the communication module of the photoelectric height gauge;
fig. 12 is a schematic block diagram of the principle of the photoelectric height gauge.
In the figure: 1. a ground surface settlement monitoring net; 1.1, monitoring a network host; 1.1.1, laser level meter; 1.1.2, supporting feet; 1.1.3, a laser level bottom plate; 1.1.4, a communication module; 1.2, photoelectric height gauge assembly; 1.2.1, photoelectric height gauge; 1.2.1.1, central tube; 1.2.1.2, a photoelectric height gauge module; 1.2.1.2.1, photoelectric sensor inner tube; 1.2.1.2.2, a photosensor; 1.2.1.2.3, FPC board; 1.2.1.3, optical filter; 1.2.1.4, protecting tube; 1.2.1.5, a photoelectric height gauge communication module; 1.2.1.5.1, a communication module housing; 1.2.1.5.2, PCB board; 1.2.1.5.3, a top cover; 1.2.1.6, a balancing weight; 1.2.2, height gauge support; 1.2.2.1, a support rod; 1.2.2.2, a bracket bottom plate; 1.2.2.3, support ring; 1.2.2.4, antifriction ring; 2. a master station; 3. an intelligent mobile terminal.
Detailed Description
The present invention will be explained in detail by the following examples, which are disclosed for the purpose of protecting all technical improvements within the scope of the present invention.
A dynamic monitoring system for the earth surface settlement of a tunnel portal section in the tunnel construction process comprises an earth surface settlement monitoring network 1, a master station 2 and an intelligent mobile terminal 3; the ground surface settlement monitoring network 1, the intelligent mobile terminal 3 and the master station 2 are in communication connection with the master station 2 through a 5G public network; the ground surface settlement monitoring network 1 comprises a monitoring network host 1.1 and photoelectric height gauge assemblies 1.2, wherein the photoelectric height gauge assemblies 1.2 are provided with twelve groups, the monitoring network host 1.1 and the twelve photoelectric height gauge assemblies 1.2 are fixedly arranged on cement columns pre-embedded on the ground surface of a monitoring section at an entrance and an exit of a tunnel, and the monitoring network host 1.1 and the twelve photoelectric height gauge assemblies are connected with each other through micropower wireless communication;
the monitoring network host 1.1 comprises a laser level meter 1.1.1 and a communication module 1.1.4 which are electrically connected; the communication module 1.1.4 comprises a singlechip A and a 5G communication module, a micro-power wireless communication module, wherein the 5G communication module and the micro-power wireless communication module are electrically connected with the singlechip A; the communication module 1.1.4 is fixedly arranged at the upper end of the laser level 1.1.1, the lower end of the laser level 1.1.1 is provided with a supporting leg 1.1.2, and the lower end of the supporting leg 1.1.2 is fixedly provided with a laser level bottom plate 1.1.3; the supporting legs 1.1.2 are provided with height adjusting nuts;
the photoelectric height gauge component 1.2 comprises a photoelectric height gauge 1.2.1 and a height gauge bracket 1.2.2; the photoelectric height gauge 1.2.1 is in a slender rod shape, and a hemispherical photoelectric height gauge communication module 1.2.1.5 is fixedly arranged at the upper end of the photoelectric height gauge; the height gauge support 1.2.2 comprises a support rod 1.2.2.1, a support bottom plate 1.2.2 and a support ring 1.2.2.3, wherein the support bottom plate 1.2.2.2 is fixedly arranged at the bottom of the support rod 1.2.2.1, and the support ring 1.2.2.3 is fixedly arranged at the upper end of the support rod 1.2.2.1; when the photoelectric height gauge assembly 1.2 works, the photoelectric height gauge 1.2.1 is hung on the support ring 1.2.2.3 through the photoelectric height gauge communication module 1.2.1.5, and an antifriction ring 1.2.2.4 is arranged between the photoelectric height gauge communication module 1.2.1.5 and the support ring 1.2.2.3;
the photoelectric height gauge 1.2.1 comprises a central tube 1.2.1.1, a photoelectric height gauge module 1.2.1.2, an optical filter 1.2.1.3, a protection tube 1.2.1.4, a photoelectric height gauge communication module 1.2.1.5 and a balancing weight 1.2.1.6; the photoelectric height gauge modules 1.2.1.2 are in a circular tube shape, six photoelectric height gauge modules are arranged, and the photoelectric height gauge modules are sequentially sleeved on the outer surface of the central tube 1.2.1.1 along the axis of the central tube 1.2.1.1; the optical filter 1.2.1.3 is sheet-shaped and is wound on the outer surface of the photoelectric height gauge module 1.2.1.2; the protection tube 1.2.1.4 is transparent tubular and is sleeved on the outer surface of the optical filter 1.2.1.3; the photoelectric height gauge communication module 1.2.1.5 is fixedly arranged at the upper end of the protective tube 1.2.1.4; the balancing weight 1.2.1.6 is fixedly arranged at the lower end of the protective tube 1.2.1.4;
the photoelectric height gauge module 1.2.1.2 comprises a photoelectric sensor inner tube 1.2.1.2.1, a photoelectric sensor 1.2.1.2.2 and an FPC circuit board 1.2.1.2.3; the photoelectric sensor 1.2.1.2.2 is in a film shape, two hundred narrow strip-shaped solar cells are arranged on the surface in an array mode, the photoelectric sensor 1.2.1.2.2 is wrapped on the outer surface of the photoelectric sensor inner tube 1.2.1.2.1 in a mode that the narrow strip-shaped solar cells are perpendicular to the axis of the photoelectric sensor inner tube 1.2.1.2.1, gaps are reserved on two sides of the photoelectric sensor 1.2.1.2.2, which are parallel to the axis of the photoelectric sensor inner tube 1.2.1.2.1, and the FPC board 1.2.1.2.3 is fixedly arranged at the gaps on the two sides of the photoelectric sensor 1.2.1.2.2 and electrically connected with the same; the FPC circuit board 1.2.1.2.3 is electrically connected with the photoelectric height gauge communication module 1.2.1.5;
the outer surface of the protection tube 1.2.1.4 is provided with length scale marks, the scale marks correspond to the positions of the solar cells arranged on the photoelectric sensor 1.2.1.2.2 in an array mode, the lowermost end of each length scale mark is 0, and the uppermost end of each length scale mark is 1200;
the photoelectric height gauge communication module 1.2.1.5 comprises a communication module casing 1.2.1.5.1, a PCB board 1.2.1.5.2 and a top cover 1.2.1.5.3; the communication module shell 1.2.1.5.1 is hollow and hemispherical, the lower part is provided with a connecting pipe, the communication module shell 1.2.1.5.1 is sleeved on the outer surface of the upper end of the protection tube 1.2.1.4 through the connecting pipe and is fixedly connected with the protection tube 1.2.1.4; the PCB 1.2.1.5.2 is fixedly disposed within the interior cavity of the telecommunications module housing 1.2.1.5.1, and the top cover 1.2.1.5.3 is fixedly disposed atop the telecommunications module housing 1.2.1.5.1;
the FPC 1.2.1.2.3 comprises an analog switch, a sampling module, a signal amplification and filtering module and a single chip microcomputer C, wherein the analog switch, the sampling module, the signal amplification and filtering module and the single chip microcomputer C are electrically connected in sequence; the PCB 1.2.1.5.2 comprises a singlechip B and a micropower wireless communication module B which are electrically connected; the singlechip B of the singlechip C, PCB board 1.2.1.5.2 of the FPC board 1.2.1.2.3 is electrically connected with each other.
A monitoring method based on a tunnel construction process portal section earth surface settlement dynamic monitoring system comprises the following steps:
s1, setting the ground surface settlement monitoring net 1: the monitoring network host 1.1 and the photoelectric height gauge assembly 1.2 are fixedly arranged at set positions on the earth surface of a monitoring section at an inlet and an outlet of a tunnel according to design requirements, and two monitoring sections are arranged at a distance of 15 meters; each monitoring section comprises five monitoring points and a rear viewpoint, the five monitoring points are arranged in a bilateral symmetry mode in the direction perpendicular to the axis of the tunnel at intervals of 3.0 meters, and concrete piles are embedded in the monitoring points; selecting a rear viewpoint outside the influence range of tunnel excavation and at least 20 meters away from the tunnel; in the dynamic monitoring process of the ground surface settlement of the actual tunnel portal section, only one rear viewpoint is used, and the other viewpoint is calibrated for standby use when the other viewpoint is in an abnormal state;
s2, initializing the ground surface settlement monitoring network 1: the monitoring network host 1.1 sends out an initialization broadcast instruction and horizontal linear laser to irradiate on each photoelectric height gauge assembly 1.2 arranged at a ground surface monitoring point and a rear viewpoint of a monitoring section at an entrance and an exit of a tunnel; each photoelectric height gauge assembly 1.2 detects self horizontal linear laser irradiation position information Bn(X0,Y0)、Tm(x0,y0) (ii) a Wherein B represents the rear viewpoint laser irradiation position information; the corner mark n is the rear view point serial number; x is an arrangement number of the photoelectric sensors 1.2.1.2.2 from bottom to top; y is the arrangement number of the solar cells from bottom to top on the photoelectric sensor 1.2.1.2.2; the corner mark 0 represents initial acquisition information; t represents the laser irradiation position information of the monitoring point; the corner mark m is the monitoring point serial number; x is the arrangement serial number of the photoelectric sensor 1.2.1.2.2 from bottom to top; y is the arrangement serial number of the solar cells from bottom to top on the photoelectric sensor 1.2.1.2.2; the corner mark 0 represents initial acquisition information; each photoelectric height gauge component 1.2 acquires self-initialized horizontal linear laser irradiation position information Bn(X0,Y0) Or Tm(x0,y0) Is converted into the indicating value of the corresponding scale mark of the photoelectric height gauge component 1.2
Or
The information is stored in a communication module 1.2.1.5 of the photoelectric height gauge per se to complete initialization;
Bn(X0,Y0)、Tm(x0,y0) The calculation formula for converting the scale mark indication value corresponding to the photoelectric height gauge component 1.2 is as follows:
wherein
Indicating scale marking indicating values of laser irradiation of the photoelectric height gauge component 1.2 with the rear view point serial number n during initialization;
indicating the scale marking indicating value of laser irradiation of the photoelectric height gauge component 1.2 with the monitoring point serial number of m during initialization; k is the length conversion coefficient of the photoelectric height gauge module 1.2.1.2; k is the length conversion coefficient of the solar cell; the conversion coefficients K and K are related to the structural design of the photoelectric height gauge 1.2.1, and the value of the conversion coefficient K is 200, and the value of K is 1;
for example, assume that the rear viewpoint laser irradiation position information B of number 1 acquired is initializedn(X0,Y0) Is B1(3,126), initializing the monitor point laser irradiation position information T collected in sequence number 3m(x0,y0) Is T3(3,85), the scale mark indicating value of laser irradiation of the photoelectric height gauge component 1.2 with the initialized rear view point serial number of 1 is calculated to be
Scale marking indicating value of photoelectric height gauge component 1.2 laser irradiation with monitoring point serial number of 3 during initialization
When each photoelectric height gauge groupAfter the initialization of the element 1.2 is completed, the initialization is performed through micropower wireless
Or
Transmitting to a monitoring network host 1.1; when the monitoring network host 1.1 receives the initialization returned by all the photoelectric height gauge assemblies 1.2
Or
When the laser is started, sending an initialization ending broadcast instruction, and closing to emit horizontal linear laser; the monitoring network host 1.1 initializes the received information via the 5G public network
Or
Transmitting to the master station 2 for storage;
s3, dynamically monitoring the ground surface settlement monitoring network 1: the monitoring network host 1.1 sends out a detection broadcast command every hour according to a set monitoring period and sends out horizontal linear laser to irradiate on each photoelectric height gauge component 1.2 arranged at a monitoring section ground surface monitoring point and a rear viewpoint at an entrance and an exit of a tunnel; each photoelectric height gauge assembly 1.2 detects self horizontal linear laser irradiation position information Bn(Xi,Yi)、Tm(xi,yi) (ii) a Wherein, the corner mark i is the serial number of the detection period; each photoelectric height gauge component 1.2 acquires the irradiation position information B of the horizontal linear laser of the componentn(Xi,Yi) Or Tm(xi,yi) Is converted into the indicating value L of the corresponding scale mark of the photoelectric height gauge component 1.2i BnOr Li TmAnd wirelessly transmitting the data to a monitoring network host 1.1 through micropower;
Bn(Xi,Yi)、Tm(xi,yi) The calculation formula for converting the scale mark indication value corresponding to the photoelectric height gauge component 1.2 is as follows:
Li Bn＝K(Xi-1)+kYi，
Li Tm＝K(xi-1)+kyi；
wherein L isi BnIndicating the scale marking indicating value of laser irradiation of the photoelectric height gauge component 1.2 with the viewpoint sequence number n after the monitoring period i; l isi TmIndicating the scale marking indicating value of laser irradiation of the photoelectric height gauge component 1.2 with the monitoring point serial number m in the monitoring period i;
for example, assume that the forty-th cycle acquires rear viewpoint laser irradiation position information B of number 1n(Xi,Yi) Is B1(3,101) monitoring Point laser irradiation position information T of number 3 was collected in the fortieth cyclem(xi,yi) Is T3(3,115), the calculated scale indication value of laser irradiation of the photoelectric height gauge component 1.2 with the viewpoint number of 1 after the fortieth period is 1
Scale indication value of laser irradiation of 1.2 photoelectric height gauge assembly with sequence number of 3 at forty-th cycle monitoring point
When the monitoring network host 1.1 receives the L in the current monitoring period returned by all the photoelectric height gauge assemblies 1.2i BnOr Li TmWhen the laser beam is transmitted, sending a broadcast instruction of ending the monitoring period of the current round, and closing to transmit the horizontal linear laser; the monitoring network host 1.1 receives the L in the monitoring period of the current round through the 5G public networki BnOr Li TmTransmitting to the master station 2;
s4, calculating the earth surface settlement of the monitoring section of the tunnel entrance/exit: the calculation of the settlement of the earth surface of the monitoring section of the entrance and the exit of the tunnel is completed in the main station 2; the calculation formula of the earth surface settlement of the monitoring section of the entrance and the exit of the tunnel is as follows:
wherein
The settlement amount of the photoelectric height gauge component 1.2 with the monitoring point serial number of m in the ith monitoring period is represented; taking the data collected at the monitoring point of the serial number 3 in the fortieth period as an example, the calculation result of the settlement amount is
S5, displaying and alarming the settlement of the ground surface of the monitored section of the tunnel entrance and exit: the main station 2 vividly and intuitively displays the settlement condition and the change rate of the earth surface of the monitoring section of the entrance and the exit of the tunnel in the form of a graph and a table at each monitoring point of the monitoring section of the entrance and the exit of the tunnel; a tunnel entrance and exit monitoring section settlement amount and a settlement rate alarm threshold are arranged in the master station 2, and when the tunnel entrance and exit monitoring section settlement amount and the settlement rate exceed the set thresholds, an alarm signal is sent out; the alarm signal is synchronously transmitted to the intelligent mobile terminal 3;
the monitoring period of the surface settlement monitoring network 1 can be modified by sending an instruction to the monitoring network host 1.1 through the master station 2; for example, when the settlement of the ground surface of the monitoring section of the entrance and the exit of the tunnel is close to a set value or the settlement rate is accelerated, the monitoring period of the monitoring network host is changed from one hour to five minutes through the master station, so that the settlement change condition of the ground surface of the monitoring section of the entrance and the exit of the tunnel can be mastered in real time.
The present invention is not described in detail in the prior art.
Claims (10)
1. The utility model provides a tunnel work progress entrance to a cave section earth's surface settlement dynamic monitoring system, characterized by: the system comprises a ground surface settlement monitoring network (1), a master station (2) and an intelligent mobile terminal (3), wherein the ground surface settlement monitoring network (1), the intelligent mobile terminal (3) and the master station (2) are in communication connection with the master station (2) through a 5G public network;
the ground surface settlement monitoring network (1) comprises a monitoring network host (1.1) and a plurality of photoelectric height gauge assemblies (1.2), wherein the photoelectric height gauge assemblies (1.2) are arranged, the monitoring network host (1.1) and the plurality of photoelectric height gauge assemblies (1.2) are fixedly arranged at set positions of the ground surface of a monitoring section at an inlet and an outlet of a tunnel, and the monitoring network host and the photoelectric height gauge assemblies are in wireless communication connection through micropower; when the ground surface settlement monitoring network (1) works, a monitoring network host (1.1) emits horizontal linear laser in a set period to irradiate on a plurality of photoelectric height gauge assemblies (1.2), and the plurality of photoelectric height gauge assemblies (1.2) detect the irradiation positions of the horizontal linear laser; when the ground surface of the monitoring section of the entrance and exit of the tunnel subsides, the altitude of the plurality of photoelectric height gauge assemblies (1.2) changes, the positions of the linear laser irradiated on the plurality of photoelectric height gauge assemblies (1.2) also change correspondingly, the variation of the horizontal linear laser irradiated positions detected by the plurality of photoelectric height gauge assemblies (1.2) is transmitted to a monitoring network host (1.1) and a master station (2) in sequence through micropower wireless and 5G public networks, and the master station (2) calculates the variation of the horizontal linear laser irradiated positions of the plurality of photoelectric height gauge assemblies (1.2) to obtain the integral settlement condition of the ground surface of the monitoring section of the entrance and exit of the tunnel;
the intelligent mobile terminal (3) logs in the main station (2) and checks the integral settlement condition of the ground surface of the monitoring section at the entrance and the exit of the tunnel at any time.
2. The dynamic monitoring system for tunnel construction process entrance to tunnel surface settlement of claim 1, which is characterized in that: the monitoring network host (1.1) comprises a laser level meter (1.1.1) and a communication module (1.1.4), and the laser level meter and the communication module are electrically connected; the communication module (1.1.4) comprises a singlechip A, a 5G communication module and a micro-power wireless communication module, wherein the 5G communication module and the micro-power wireless communication module are electrically connected with the singlechip A; the communication module (1.1.4) is fixedly arranged at the upper end of the laser level meter (1.1.1), the lower end of the laser level meter (1.1.1) is provided with a supporting leg (1.1.2), and the lower end of the supporting leg (1.1.2) is fixedly provided with a laser level meter bottom plate (1.1.3); the supporting legs (1.1.2) are provided with height adjusting nuts.
3. The dynamic monitoring system for tunnel construction process entrance to tunnel surface settlement of claim 2, wherein: the photoelectric height gauge component (1.2) comprises a photoelectric height gauge (1.2.1) and a height gauge bracket (1.2.2); the photoelectric height gauge (1.2.1) is in a long and thin rod shape, and a hemispherical photoelectric height gauge communication module (1.2.1.5) is fixedly arranged at the upper end of the photoelectric height gauge; the height gauge support (1.2.2) comprises a support rod (1.2.2.1), a support bottom plate (1.2.2.2) and a support ring (1.2.2.3), wherein the support bottom plate (1.2.2.2) is fixedly arranged at the bottom of the support rod (1.2.2.1), and the support ring (1.2.2.3) is fixedly arranged at the upper end of the support rod (1.2.2.1); when the photoelectric height gauge assembly (1.2) works, the photoelectric height gauge assembly is hung on the support ring (1.2.2.3) through the photoelectric height gauge communication module (1.2.1.5), and an antifriction ring (1.2.2.4) is arranged between the photoelectric height gauge communication module (1.2.1.5) and the support ring (1.2.2.3).
4. The dynamic monitoring system for tunnel construction process entrance to tunnel surface settlement of claim 3, wherein: the photoelectric height gauge (1.2.1) comprises a central tube (1.2.1.1), a photoelectric height gauge module (1.2.1.2), an optical filter (1.2.1.3), a protection tube (1.2.1.4), a photoelectric height gauge communication module (1.2.1.5) and a balancing weight (1.2.1.6); the photoelectric height gauge module (1.2.1.2) is in a circular tube shape, and a plurality of photoelectric height gauge modules are sequentially sleeved on the outer surface of the central tube (1.2.1.1) along the axis of the central tube (1.2.1.1); the optical filter (1.2.1.3) is sheet-shaped and is wound on the outer surface of the photoelectric height gauge module (1.2.1.2); the protective tube (1.2.1.4) is transparent tubular and is sleeved on the outer surface of the optical filter (1.2.1.3); the photoelectric height gauge communication module (1.2.1.5) is fixedly arranged at the upper end of the protective tube (1.2.1.4); the balancing weight (1.2.1.6) is fixedly arranged at the lower end of the protective tube (1.2.1.4).
5. The dynamic monitoring system for tunnel construction process entrance to tunnel surface settlement of claim 4, wherein: the photoelectric height gauge module (1.2.1.2) comprises a photoelectric sensor inner tube (1.2.1.2.1), a photoelectric sensor (1.2.1.2.2) and an FPC circuit board (1.2.1.2.3); the photoelectric sensor (1.2.1.2.2) is in a film shape, narrow strip-shaped solar cells are arranged on the surface array, the photoelectric sensor (1.2.1.2.2) is wrapped on the outer surface of the photoelectric sensor inner tube (1.2.1.2.1) in a mode that the narrow strip-shaped solar cells are perpendicular to the axis of the photoelectric sensor inner tube (1.2.1.2.1), gaps are reserved on two sides of the photoelectric sensor (1.2.1.2.2) parallel to the axis of the photoelectric sensor inner tube (1.2.1.2.1), and the FPC circuit board (1.2.1.2.3) is fixedly arranged at the gaps on the two sides of the photoelectric sensor (1.2.1.2.2) and electrically connected with the photoelectric sensor; the FPC circuit board (1.2.1.2.3) is electrically connected with the photoelectric height gauge communication module (1.2.1.5).
6. The dynamic monitoring system for tunnel construction process entrance to tunnel surface settlement of claim 5, wherein: the outer surface of the protection tube (1.2.1.4) is provided with a length scale mark, the scale mark corresponds to the position of the solar cell arranged on the photoelectric sensor (1.2.1.2.2) in an array, and the lowermost end of the length scale mark is 0.
7. The dynamic monitoring system for tunnel construction process entrance to tunnel surface settlement of claim 6, wherein: the photoelectric height gauge communication module (1.2.1.5) comprises a communication module shell (1.2.1.5.1), a PCB (1.2.1.5.2) and a top cover (1.2.1.5.3); the communication module shell (1.2.1.5.1) is hollow and hemispherical, the lower part of the communication module shell is provided with a connecting pipe, and the communication module shell (1.2.1.5.1) is sleeved on the outer surface of the upper end of the protection pipe (1.2.1.4) through the connecting pipe and is fixedly connected with the protection pipe (1.2.1.4); the PCB panel (1.2.1.5.2) is fixedly disposed within the interior cavity of the telecommunications module housing (1.2.1.5.1), and the top cover (1.2.1.5.3) is fixedly disposed on top of the telecommunications module housing (1.2.1.5.1).
8. The dynamic monitoring system for tunnel construction process entrance to tunnel surface settlement of claim 7, wherein: the FPC circuit board (1.2.1.2.3) comprises an analog switch, a sampling module, a signal amplification and filtering module and a single chip microcomputer C, wherein the analog switch, the sampling module, the signal amplification and filtering module and the single chip microcomputer C are electrically connected in sequence;
the PCB (1.2.1.5.2) comprises a singlechip B and a micro-power wireless communication module B which are electrically connected;
the singlechip B of the singlechip C, PCB board (1.2.1.5.2) of the FPC board (1.2.1.2.3) is electrically connected.
9. The monitoring method of the dynamic monitoring system for the settlement of the ground surface at the tunnel portal section in the tunnel construction process based on the claim 8 is characterized in that:
s1, setting the ground surface settlement monitoring net (1): the monitoring network host (1.1) and the photoelectric height gauge assembly (1.2) are fixedly arranged at a set position on the earth surface of a tunnel entrance/exit monitoring section according to design requirements, and each monitoring section comprises a plurality of monitoring points and a rear view point;
s2, initializing the ground surface settlement monitoring network (1): the monitoring network host (1.1) sends out an initialization broadcast instruction and horizontal linear laser to irradiate on each photoelectric height gauge assembly (1.2) arranged at a ground surface monitoring point and a rear viewpoint of a monitoring section at an entrance and an exit of a tunnel; each photoelectric height gauge assembly (1.2) detects self horizontal linear laser irradiation position information Bn(X0,Y0)、Tm(x0,y0) (ii) a Wherein B represents the rear viewpoint laser irradiation position information; the corner mark n is the rear view point serial number; x is the arrangement serial number of the photoelectric sensors (1.2.1.2.2) from bottom to top; y is the arrangement serial number of the solar cells from bottom to top on the photoelectric sensor (1.2.1.2.2); the corner mark 0 represents initial acquisition information; t represents the laser irradiation position information of the monitoring point; the corner mark m is the monitoring point serial number; x is the arrangement serial number of the photoelectric sensors (1.2.1.2.2) from bottom to top; y is the arrangement serial number of the solar cells from bottom to top on the photoelectric sensor (1.2.1.2.2); the corner mark 0 represents initial acquisition information; each photoelectric height gauge component (1.2) is used for collecting self-initialized horizontal linear laser irradiation position information Bn(X0,Y0) Or Tm(x0,y0) Is converted into a value indicated by the corresponding scale mark of the photoelectric height gauge component (1.2)
Or
Photoelectric height gauge communication module (1) stored in the photoelectric height gaugeIn 2.1.5), the initialization is completed;
Bn(X0,Y0)、Tm(x0,y0) The calculation formula for converting the scale mark indication value corresponding to the photoelectric height gauge component (1.2) is as follows:
wherein
Scale indication values of laser irradiation of the photoelectric height gauge assembly (1.2) with the rear view point serial number n during initialization are shown;
scale indicating values of laser irradiation of the photoelectric height gauge assembly (1.2) with the monitoring point serial number of m during initialization are shown; k is the length conversion coefficient of the photoelectric height gauge module (1.2.1.2); k is the length conversion coefficient of the solar cell;
when the initialization of each photoelectric height gauge assembly (1.2) is completed, the initialization is performed through micropower wireless
Or
Transmitting to a monitoring network host (1.1); when the monitoring network host (1.1) receives the initialization returned by all the photoelectric height gauge components (1.2)
Or
Then, sending out an initialization ending broadcast instruction, and closing to emit horizontal linear laser; the monitoring network host (1.1) initializes the received information via the 5G public network
Or
Transmitting to the master station (2) for storage;
s3, acquiring dynamic monitoring data of the surface subsidence monitoring network (1): a monitoring network host (1.1) sends out a detection broadcast instruction according to a set monitoring period and sends out horizontal linear laser to irradiate on each photoelectric height gauge component (1.2) arranged at a monitoring section earth surface monitoring point and a rear viewpoint at an entrance and an exit of a tunnel; each photoelectric height gauge assembly (1.2) detects self horizontal linear laser irradiation position information Bn(Xi,Yi) Or Tm(xi,yi) (ii) a Wherein, the corner mark i is the serial number of the detection period; each photoelectric height gauge component (1.2) acquires the irradiation position information B of the self horizontal linear lasern(Xi,Yi) Or Tm(xi,yi) Is converted into a scale mark indicating value L corresponding to the photoelectric height gauge component (1.2)i BnOr Li TmAnd wirelessly transmitting the data to a monitoring network host (1.1) through micropower;
Bn(Xi,Yi)、Tm(xi,yi) The calculation formula for converting the scale mark indication value corresponding to the photoelectric height gauge component (1.2) is as follows:
Li Bn＝K(Xi-1)+kYi，
Li Tm＝K(xi-1)+kyi；
wherein L isi BnIndicating the scale marking indicating value of laser irradiation of the photoelectric height gauge component (1.2) with the viewpoint sequence number n after the monitoring period i; l isi TmPhotoelectric height gauge component (1.2) with serial number m of monitoring point representing monitoring period iThe scale of the light irradiation marks the indication value;
when the monitoring network host (1.1) receives the L in the current monitoring period returned by all the photoelectric height gauge assemblies (1.2)i BnAnd Li TmThen, sending a broadcast instruction of ending the monitoring period of the current round, and closing to emit horizontal linear laser; the monitoring network host (1.1) receives the L in the monitoring period of the current round through the 5G public networki BnAnd Li TmTransmitting to the primary station (2);
s4, calculating the earth surface settlement of the monitoring section of the tunnel entrance/exit: the calculation of the settlement of the earth surface of the monitoring section of the entrance and the exit of the tunnel is completed in the main station (2); the calculation formula of the earth surface settlement of the monitoring section of the entrance and the exit of the tunnel is as follows:
wherein
And the settlement amount of the photoelectric height gauge component (1.2) with the monitoring point number of m in the ith monitoring period is shown.
S5, displaying and alarming the settlement of the ground surface of the monitored section of the tunnel entrance and exit: the main station (2) vividly and intuitively displays the settlement condition and the change rate of the earth surface of the monitoring section of the entrance and the exit of the tunnel in the form of a graph and a table at each monitoring point of the monitoring section of the entrance and the exit of the tunnel; a tunnel entrance and exit monitoring section settlement amount and a settlement rate alarm threshold are arranged in the master station (2), and when the tunnel entrance and exit monitoring section settlement amount and the settlement rate exceed the set thresholds, an alarm signal is sent out; the alarm signal is synchronously transmitted to the intelligent mobile terminal (3).
10. The monitoring method of the dynamic monitoring system for the settlement of the ground surface at the entrance section in the tunnel construction process according to claim 9, which is characterized in that: the monitoring period of the surface settlement monitoring network (1) can be modified by sending an instruction to the monitoring network host (1.1) through the master station (2).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116753905A (en) * | 2023-08-17 | 2023-09-15 | 中交四航工程研究院有限公司 | Automatic ultra-soft soil monitoring system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116753905A (en) * | 2023-08-17 | 2023-09-15 | 中交四航工程研究院有限公司 | Automatic ultra-soft soil monitoring system and method |
| CN116753905B (en) * | 2023-08-17 | 2023-12-19 | 中交四航工程研究院有限公司 | Automatic ultra-soft soil monitoring system and method |
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