CN115235416B - Automatic monitoring system and method for shield construction segment settlement - Google Patents
Automatic monitoring system and method for shield construction segment settlement Download PDFInfo
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- CN115235416B CN115235416B CN202210687234.2A CN202210687234A CN115235416B CN 115235416 B CN115235416 B CN 115235416B CN 202210687234 A CN202210687234 A CN 202210687234A CN 115235416 B CN115235416 B CN 115235416B
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- range finder
- laser range
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
Abstract
The application relates to an automatic monitoring system and a monitoring method for shield construction segment settlement, comprising the following steps: the first laser range finder and the second laser range finder are vertically arranged on the top surface of the tail part of the frame and face the top of the segment ring, and the distance between the first laser range finder and the second laser range finder is equal to the ring width of the segment ring; the third laser range finder is rotatably arranged on the top surface of the frame head and faces the top of the segment ring; and the elevation measuring device is connected to the first laser range finder, the second laser range finder and the third laser range finder and is connected with an industrial personal computer of the shield, and the elevation measuring device is used for measuring the first elevation difference of the first laser range finder and the second elevation difference of the first laser range finder and the third laser range finder. The elevation of the segment ring is monitored in real time in the shield tunneling process so as to obtain the sedimentation data of the segment ring, automatic monitoring is realized without manual measurement, and the precision of segment ring sedimentation monitoring is improved.
Description
Technical Field
The application relates to the technical field of shield construction, in particular to an automatic monitoring system and a monitoring method for shield construction segment settlement.
Background
In the construction process of the shield machine, the segment settlement condition of a construction disturbance area needs to be measured, the measurement result guides site construction, engineering safety is ensured, and the method is an important basis for predicting earth surface settlement. Referring to fig. 1, a common segment settlement monitoring method is manual accurate leveling, and two operators are required, one operator of a level 11 and one operator of a leveling rod 12. During operation, two persons guide and measure the level point elevation of the stable area in the tunnel to the temporary level point 13 near the operation surface along a fixed level route, so that the sight line elevation of the leveling instrument 11 is temporarily connected to an engineering elevation system, an operator of the leveling instrument 12 places the leveling instrument 12 in the center of the front edge of the bottom of the duct piece one by one to observe and record the sight line height, and after the observation is finished, the operator of the leveling instrument 11 tidies and calculates the observation records and compares the observation records with the previous observation records to obtain the sedimentation quantity of the duct piece. However, this method is labor-and time-consuming and has low monitoring efficiency.
Disclosure of Invention
The application aims to overcome the defects of the prior art, and provides an automatic monitoring system and a monitoring method for shield construction segment settlement, so as to solve the problems that the existing manual accurate leveling measurement method consumes manpower and time and is low in monitoring efficiency.
In order to achieve the above purpose, the application provides an automatic monitoring system for shield construction segment settlement, the monitoring system is installed on a frame of a shield tail, and the monitoring system comprises:
the first laser distance measuring instrument and the second laser distance measuring instrument are vertically arranged on the top surface of the tail part of the frame and face the top of the duct piece ring and are connected with the industrial personal computer of the shield, the distance between the first laser distance measuring instrument and the second laser distance measuring instrument is equal to the ring width of the duct piece ring, the first distance delta ha1 between the first laser distance measuring instrument and the corresponding detecting point on the duct piece ring is measured through the first laser distance measuring instrument, and the second distance delta ha2 between the second laser distance measuring instrument and the corresponding detecting point on the duct piece ring is measured through the second laser distance measuring instrument;
the third laser distance measuring instrument is rotatably arranged on the top surface of the head of the frame and faces the top of the duct piece ring, the third laser distance measuring instrument, the first laser distance measuring instrument and the second laser distance measuring instrument are aligned and arranged in the horizontal direction, the third laser distance measuring instrument is connected with an industrial personal computer of the shield, and the industrial personal computer controls the third laser distance measuring instrument to rotate and adjust so that the third laser distance measuring instrument is sequentially aligned with the current assembly ring and detection points on a plurality of duct piece rings behind the current assembly ring, so as to measure a plurality of third intervals D between the third laser distance measuring instrument and the current assembly ring and the detection points on the plurality of duct piece rings behind the current assembly ring; and
the method comprises the steps that an elevation measuring device which is installed and connected to a first laser range finder, a second laser range finder and a third laser range finder is connected with an industrial personal computer of a shield, the elevation measuring device is used for measuring a first elevation difference delta hab of detection points corresponding to the first laser range finder and the second elevation difference delta hac of the first laser range finder and the third laser range finder, each shield is assembled to complete a ring segment ring, the first elevation difference delta hab, the second elevation difference delta hac, the first interval delta HA1, the second interval delta HA2 and the third interval D are measured, the elevation values HB of the detection points corresponding to the second laser range finder and the second elevation difference delta hac of the first laser range finder and the third laser range finder are calculated by combining the set elevation values HA of the first laser range finder, a plurality of detection point HN on the ring behind the current assembly ring are calculated, and a plurality of sedimentation sheet sets of values are assembled according to the elevation values of the ring.
The automatic segment settlement monitoring system is arranged on the frame of the shield tail, along with continuous tunneling of the shield, the shield finishes one ring of segment ring every time in assembly, a set elevation value HA of a group of first laser rangefinder corresponding to a detection point, an elevation value HB of a second laser rangefinder corresponding to a detection point, and monitoring data of the elevation values HN of the current assembly ring and a plurality of detection points on the segment ring behind the current assembly ring can calculate the settlement value of the tube segment ring according to the difference value of the acquired plurality of groups of elevation values, thereby realizing real-time monitoring of the settlement of the segment ring in the process of tunneling of the shield without manual operation measurement, saving manpower and time and improving the monitoring precision of the settlement amount of the segment ring.
The application further improves the shield construction segment settlement automatic monitoring system, which comprises a first hydrostatic level arranged on the first laser range finder, a second hydrostatic level arranged on the second laser range finder, a third hydrostatic level arranged on the third laser range finder, a first water pipe and a first air pipe which are arranged between the first hydrostatic level and the second hydrostatic level, and a second water pipe and a second air pipe which are arranged between the second hydrostatic level and the third hydrostatic level;
the first hydrostatic level, the second hydrostatic level and the third hydrostatic level are sequentially connected and connected with an industrial personal computer of the shield.
The automatic shield construction segment settlement monitoring system is further improved in that the setting direction of the first laser range finder is consistent with the direction of the central axis of the segment ring.
The automatic shield construction segment settlement monitoring system is further improved by further comprising a cradle head arranged on the top surface of the frame head, and the third laser range finder is rotatably arranged on the cradle head.
The application also provides a monitoring method using the shield construction segment settlement automatic monitoring system, which comprises the following steps:
when the shield assembly is completed on the current segment ring, the industrial personal computer controls the first laser distance meter to measure a first distance delta ha1 between the first laser distance meter and a detection point on the corresponding segment ring, and controls the second laser distance meter to measure a second distance delta ha2 between the second laser distance meter and the detection point on the corresponding segment ring;
the industrial personal computer controls the third laser range finders to rotate so that the third laser range finders are sequentially aligned with the current assembly ring and detection points on a plurality of segment rings behind the current assembly ring to measure a plurality of third distances D between the third laser range finders and the current assembly ring and among a plurality of detection points on the segment rings behind the current assembly ring;
the elevation measurement device measures a first elevation difference delta hab of the first laser range finder and the second laser range finder and a second elevation difference delta hac of the first laser range finder and the third laser range finder;
the industrial personal computer acquires the first elevation difference delta hab, the second elevation difference delta hac, the first interval delta HA1, the second interval delta HA2 and the third interval D at the current moment, and calculates an elevation value HB of a detection point corresponding to the second laser range finder, an elevation value HN of the detection point on the current assembly ring and a plurality of segment rings behind the current assembly ring by combining a set elevation value HA of the detection point corresponding to the first laser range finder;
along with continuous tunneling of the shield, the industrial personal computer acquires and calculates elevation values of detection points on the corresponding segment ring, and calculates sedimentation values of the segment ring according to differences of a plurality of groups of elevation values.
The monitoring method of the shield construction segment settlement automatic monitoring system is further improved in that the elevation value HB of the corresponding detection point of the second laser range finder is calculated according to the following formula:
HB＝HA-△ha1+△hab+△hb2；
the method comprises the steps of setting a height value of a detection point corresponding to a first laser range finder, setting a first distance between the first laser range finder and the detection point on a corresponding segment ring, setting a first height difference between the first laser range finder and a second laser range finder, and setting a second distance between the second laser range finder and the detection point on the corresponding segment ring as Δh2, wherein HA is the set height value of the detection point corresponding to the first laser range finder, and Δha1 is the first distance between the first laser range finder and the detection point on the corresponding segment ring.
The monitoring method of the shield construction segment settlement automatic monitoring system is further improved in that the vertical distance Deltahn between the third laser range finder and the detection point on the corresponding segment ring is calculated according to the following formula:
△hn＝D*sin(β)；
and D is the distance between the third laser range finder and the detection point on the corresponding segment ring, and beta is the included angle between the third laser range finder and the horizontal line.
The application further improves the monitoring method of the shield construction segment settlement automatic monitoring system, which comprises the following steps of calculating an elevation value HN of a detection point corresponding to the third laser range finder according to the following formula:
HN＝HA-△ha1+△hac+△hn；
the HA is a set elevation value of a corresponding detection point of the first laser range finder, Δha1 is a first distance between the first laser range finder and the corresponding detection point on the segment ring, Δ hac is a second elevation difference between the first laser range finder and the third laser range finder, and Δhn is a vertical distance between the third laser range finder and the corresponding detection point on the segment ring.
The application further improves the monitoring method of the shield construction segment settlement automatic monitoring system in that when the industrial personal computer controls the rotation of the third laser range finder, the industrial personal computer obtains an included angle beta between the third laser range finder and a horizontal line.
The application further improves the monitoring method of the shield construction segment sedimentation automatic monitoring system in that HA is an initial set value in the primary calculation;
in the subsequent calculation process, the set elevation value HA of the corresponding detection point of the first laser range finder in the current monitoring is the elevation value HB of the corresponding detection point of the second laser range finder in the previous monitoring.
Drawings
FIG. 1 is a schematic diagram of a conventional manual precision leveling instrument.
Fig. 2 is a schematic structural diagram of the automatic monitoring system for the sedimentation of the shield construction segments.
Fig. 3 is a flow chart of the automatic monitoring method for the sedimentation of the shield construction segment.
Symbol description: the leveling instrument comprises a leveling instrument 11, a leveling rod 12, a temporary leveling point 13, a segment ring 20, a frame 30, a first laser range finder 40, a second laser range finder 50, a third laser range finder 60, a cradle head 70, an industrial computer 80 and an elevation measuring device 90.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The application provides an automatic monitoring system and a monitoring method for shield construction segment settlement, wherein each shield is assembled to complete one ring of segment rings, the elevation value HB of a detection point corresponding to a second laser range finder, the elevation values HN of the detection points on a current assembled ring and a plurality of segment rings behind the current assembled ring are calculated, and the settlement value of a pipe segment ring is calculated according to the difference value of the elevation values of the plurality of groups. Compared with a manual monitoring mode, the automatic monitoring system is high in automation degree and accuracy.
The automatic monitoring system for the sedimentation of the shield construction segment is described below with reference to the accompanying drawings.
Referring to fig. 2, in this embodiment, an automatic monitoring system for subsidence of segments in shield construction includes: the monitoring system is installed on the frame 30 of shield tail, and the monitoring system includes: the first laser distance meter 40 and the second laser distance meter 50 which are vertically arranged on the top surface of the tail part of the frame 30 and face the top of the segment ring 20 are connected with the industrial personal computer 80 of the shield, the distance between the first laser distance meter 40 and the second laser distance meter 50 is equal to the ring width of the segment ring 20, the first distance delta ha1 between the first laser distance meter 40 and the detection point on the corresponding segment ring 20 is measured through the first laser distance meter 40, and the second distance delta ha2 between the second laser distance meter 50 and the detection point on the corresponding segment ring 20 is measured through the second laser distance meter 50; the third laser distance measuring instrument 60 is rotatably arranged on the top surface of the head of the frame 30 and faces the top of the segment ring 20, the third laser distance measuring instrument 60, the first laser distance measuring instrument 40 and the second laser distance measuring instrument 50 are aligned in the horizontal direction, the third laser distance measuring instrument 60 is in control connection with the industrial personal computer 80 of the shield, the industrial personal computer 80 controls the third laser distance measuring instrument 60 to rotate and adjust so that the third laser distance measuring instrument 60 is sequentially aligned with the current assembly ring and detection points on the segment rings 20 behind the current assembly ring, and a plurality of third distances D between the third laser distance measuring instrument 60 and the current assembly ring and a plurality of detection points on the segment rings 20 behind the current assembly ring are measured; the elevation measuring device 90 connected to the first laser rangefinder 40, the second laser rangefinder 50 and the third laser rangefinder 60 is installed and connected to the industrial personal computer 80 of the shield, the elevation measuring device 90 is used for measuring a first elevation difference Δhab of the first laser rangefinder 40 and the second laser rangefinder 50 and a second elevation difference Δ hac of the first laser rangefinder 40 and the third laser rangefinder 60, each time the shield is assembled to complete a ring of segment rings 20, the first elevation difference Δhab, the second elevation difference Δ hac, the first interval Δha1, the second interval Δha2 and the third interval D are measured, the elevation value HB of the detection point corresponding to the second laser rangefinder 50, the elevation value HN of the detection point on the current assembly ring and a plurality of segment rings 20 are calculated in combination with the set elevation values corresponding to the first laser rangefinder 40, and the numerical values of the sedimentation rings 20 are calculated according to the difference values of the plurality of sets of elevation values.
In this embodiment, the automatic segment settlement monitoring system is installed on the frame 30 at the tail of the shield, along with continuous tunneling of the shield, the industrial personal computer 80 acquires and calculates the elevation values of the detection points on the corresponding segment ring 20 every time the shield is assembled to complete a ring of segment rings 20, calculates the settlement values of the tube segment rings 20 according to the differences of a plurality of groups of elevation values, monitors the elevation of the segment rings 20 in real time during tunneling of the shield to acquire the settlement data of the segment rings 20, and the operation position of manual precise leveling is located at the center of the bottom of the segment, so that the automatic segment settlement monitoring system is not suitable for large-diameter shields with large-scale segment feeding machines. Compared with the existing manual precise leveling method, the monitoring system can automatically acquire the elevation reference information in the shield tunneling process, does not delay the progress of shield construction, does not need manual measurement, realizes automatic monitoring, and improves the precision of segment ring 20 settlement monitoring.
Referring to FIG. 2, in one embodiment, the high-rise measurement device includes a first hydrostatic level mounted on a first laser rangefinder 40, a second hydrostatic level mounted on a second laser rangefinder 50, a third hydrostatic level mounted on a third laser rangefinder 60, a first water pipe and a first air pipe mounted connected between the first and second hydrostatic levels, and a second water pipe and a second air pipe mounted connected between the second and third hydrostatic levels; the first hydrostatic level, the second hydrostatic level and the third hydrostatic level are connected in sequence and with an industrial personal computer 80 of the shield.
Preferably, the high-rise measuring device comprises a first mounting table corresponding to the first laser range finder 40 mounted on the top surface of the tail part of the frame 30, and a second mounting table corresponding to the second laser range finder 50 mounted on the top surface of the tail part of the frame 30, wherein the first laser range finder 40 and the first hydrostatic level are mounted on the first mounting table, and the second laser range finder 50 and the second hydrostatic level are mounted on the second mounting table.
Referring to fig. 2, further, the first laser rangefinder 40 is disposed in a direction consistent with the direction of the central axis of the segment ring 20.
Referring to fig. 2, further, the monitoring system further includes a cradle 70 mounted on the top surface of the head of the frame 30, and the third laser rangefinder 60 is rotatably mounted on the cradle 70.
Preferably, a third hydrostatic level is mounted on the head 70.
Referring to fig. 2, in a preferred embodiment, the hardware of the present application comprises a laser range finder, a cradle head 70, a hydrostatic leveling system, an industrial personal computer 80, a display device, a connecting wire, a power supply device, and the like, and the software comprises segment sedimentation data acquisition, processing, analysis and display integrated software loaded on the industrial personal computer 80. The hardware connection condition is as follows, point A is the position that can observe last ring section of jurisdiction ring 20 on the frame 30 afterbody, a laser range finder that is fixed in the frame 30 top is installed perpendicularly, point B is the position that can observe penultimate ring section of jurisdiction ring 20 on the frame 30 afterbody, a laser range finder that is fixed in the frame 30 top is installed perpendicularly, point C is the front portion top of frame 30, install a cloud platform 70 that is fixed in the frame 30 top, and a laser range finder is fixed on cloud platform 70. A. B, C three points are simultaneously connected into the hydrostatic leveling system. The power supply device supplies power to the cradle head 70, the laser range finder, the hydrostatic leveling system, the industrial personal computer 80 and the display device through cables. Each module is connected with the industrial personal computer 80 through a connecting wire to realize instruction and data interaction, and the industrial personal computer 80 is connected with the display device through the connecting wire to realize the visualization of the sedimentation observation result of the segment ring 20.
The working flow of the automatic shield construction segment settlement monitoring system is described below.
And establishing connection between segment settlement data acquisition processing analysis display integrated software and a current shield machine real-time database, and realizing real-time acquisition of data such as shield machine ring number, incision mileage, jack travel, segment ring 20 ring width and the like.
After the hardware connection is completed, initializing the system. The A point laser range finder observes the 1 st annular pipe top, indicates the measuring point position by laser, manually guides the measuring point elevation to a construction elevation system, and records the current shield machine ring number, the incision mileage and the jack travel as initial values. And B, observing the 2 nd loop pipe top by the laser range finder, and recording the reading of the range finder. And (5) measuring the vertical distance between the point A laser rangefinder and the intrados of the segment ring 20 in the vertical state, and calculating the designed vertical angle from the point C laser rangefinder to the assembling ring and the 8-ring measuring points after the assembling ring. The cradle head 70 controls the rotation of the C-point laser distance meter, performs distance observation on the assembled rings and the 8-ring measuring points after the assembled rings, performs projection correction according to the rotating vertical angle, wherein Deltahn=Dsin (beta), D is the distance between the C-point laser distance meter and the measuring point on the corresponding segment ring 20, beta is the vertical angle, calculates the vertical distance from the C-point laser distance meter to the corresponding segment ring 20, and calculates the elevation of each ring measuring point.
The elevation of the measuring point on the ring segment 20 corresponding to the point A of the laser range finder is HA, the elevation difference between the point A and the measuring point on the ring segment 20 of the 1 st ring is Deltaha 1, the elevation difference between the point B and the measuring point on the ring segment 20 of the 2 nd ring is Deltahb 2, and the elevation difference between the point C and the measuring point on the 8 th ring after the ring is assembled is Deltahn, deltahn-1, deltahn-2, deltahn-3, deltahn-4, deltahn-5, deltahn-6, deltahn-7 and Deltahn-8. And the elevation difference from the point A laser distance measuring instrument to the point B laser distance measuring instrument measured by the static leveling system is delta hab, the elevation difference from the point A laser distance measuring instrument to the point C laser distance measuring instrument is delta hac, the initial elevation of the measuring point on the segment ring 20 corresponding to the point B laser distance measuring instrument is HB=HA-delta ha1+ [ delta hab+ [ delta ] HB2, and the calculation of the elevation of the measuring point on the assembled ring and the 8 ring after the assembled ring takes the assembled ring as an example. The first ring, the second ring, the assembled ring, and the 8-ring measurement points Gao Chengjun after the assembled ring are known, and the system initialization is finished.
The shield tunneling machine tunnels one segment ring 20 length, triggering the next observation period. The laser range finder at the point A moves to the second ring along with the frame 30, and the laser range finder observes the top of the second ring pipe. The laser range finder at the point B moves to the third ring along with the frame 30, and the laser range finder observes the third ring pipe top. The C-point cradle head 70 controls the rotation of the laser range finder, performs distance observation on the new assembled ring and the post 8-ring measuring points, performs projection correction Δhn=d sin (β) according to the rotated vertical angle, and calculates the vertical distance from the laser range finder to each ring segment ring 20.
The elevation of the point A corresponding to the segment ring 20 is HA, and the instrument is placed at a special position, so that the observation positions of the point B and the point A in the previous period are consistent, the HA is equal to HB in the previous period in value, the elevation difference of the point A to the point 2 of the annular tube ring 20 is known, the elevation difference of the point B to the point 20 of the annular tube ring is Deltaha 2, the elevation difference of the point C to the new assembled ring and the elevation difference of the point 8 after the assembled ring are Deltahn+1, deltahn-1, deltahn-2, deltahn-3, deltahn-4, deltahn-5, deltahn-6 and Deltahn-7. The elevation difference from the A point laser distance meter to the B point laser distance meter measured by the static leveling system is delta hab, and the elevation difference from the A point laser distance meter to the C point laser distance meter is delta hac. The initial elevation of the segment ring 20 measuring point corresponding to the point B laser distance meter is HB=HA-Deltaha2+ Deltahab+ Deltahb3, and the calculation of the elevation of the new assembled ring and the 8-ring measuring point after the new assembled ring takes the new assembled ring as an example, wherein HN+1=HA-Deltaha2+ Delta hac + Deltahn+1. The second ring, third ring, new split ring, and post-split ring 8-ring station Gao Chengjun are known.
At this time, there are two elevation observations of the nth to the N-7 th rings, and the difference can be calculated to obtain the sedimentation values of the segments of the nth to the N-7 th rings. And outputting the second sedimentation information to a display in the form of a graph.
The shield machine tunnels one ring segment ring 20 a ring width distance, triggering the next observation period. A. And B, C, observing the corresponding positions of the three-point laser range finders, and recording the data of the static leveling system. At this time, there are two elevation observations from the (N+1) -th loop to the (N-6) -th loop, and the difference is calculated to obtain the segment sedimentation values from the (N+1) -th loop to the (N-6) -th loop. And outputting the second sedimentation information to a display in the form of a graph. And the ring width distance of one segment ring 20 is driven by the shield machine, the next observation period is triggered, and the like, and the settlement monitoring data of 8 rings after the rings are assembled can be obtained after the shield machine drives the ring width distance of one segment ring 20.
And (5) the shield tunneling machine completes the assembly of all segment rings 20 of the whole tunnel, and segment settlement monitoring is finished.
Referring to fig. 3, the application also provides a monitoring method using the automatic monitoring system for shield construction segment settlement, which comprises the following steps:
s101: when the shield assembly is completed on the current segment ring 20, the industrial personal computer 80 controls the first laser distance meter 40 to measure a first distance delta ha1 between the first laser distance meter 40 and a detection point on the corresponding segment ring 20, and the industrial personal computer 80 controls the second laser distance meter 50 to measure a second distance delta ha2 between the second laser distance meter 50 and the detection point on the corresponding segment ring 20;
s102: the industrial personal computer 80 controls the third laser distance meter 60 to rotate so that the third laser distance meter 60 is sequentially aligned with the current assembly ring and detection points on the plurality of segment rings 20 behind the current assembly ring to measure a plurality of third distances D between the third laser distance meter 60 and the current assembly ring and among the plurality of detection points on the plurality of segment rings 20 behind the current assembly ring;
s103: the elevation measurement apparatus 90 measures a first elevation difference Δhab of the first laser rangefinder 40 and the second laser rangefinder 50 and a second elevation difference Δ hac of the first laser rangefinder 40 and the third laser rangefinder 60;
s104: the industrial personal computer 80 obtains a first elevation difference delta hab, a second elevation difference delta hac, a first interval delta HA1, a second interval delta HA2 and a third interval D at the current moment, and calculates an elevation value HB of a detection point corresponding to the second laser range finder 50, an elevation value HN of the detection point on the current assembly ring and a plurality of segment rings 20 behind the current assembly ring by combining a set elevation value HA of the detection point corresponding to the first laser range finder 40;
s105: as the shield is driven continuously, the industrial personal computer 80 obtains and calculates the elevation values of the detection points on the corresponding segment ring 20, and calculates the sedimentation value of the segment ring 20 according to the difference values of the elevation values of the groups.
Further, the elevation value HB of the second laser rangefinder 50 corresponding to the detection point is calculated according to the following formula:
HB＝HA-△ha1+△hab+△hb2；
wherein HA is a set elevation value of the first laser rangefinder 40 corresponding to the detection point, Δha1 is a first distance between the first laser rangefinder 40 and the detection point on the corresponding segment ring 20, Δhab is a first elevation difference between the first laser rangefinder 40 and the second laser rangefinder 50, and Δhb2 is a second distance between the second laser rangefinder 50 and the detection point on the corresponding segment ring 20.
In one embodiment, the vertical distance Δhn between the third laser rangefinder 60 and the corresponding detection point on the segment ring 20 is calculated according to the following formula:
△hn＝D*sin(β)；
wherein D is the distance between the third laser rangefinder 60 and the corresponding detection point on the segment ring 20, and β is the angle between the third laser rangefinder 60 and the horizontal line.
Further, the elevation value HN of the third laser rangefinder 60 corresponding to the detection point is calculated according to the following formula:
HN＝HA-△ha1+△hac+△hn；
wherein HA is a set elevation value of the first laser rangefinder 40 corresponding to the detection point, Δha1 is a first distance between the first laser rangefinder 40 and the detection point on the corresponding segment ring 20, Δ hac is a second elevation difference between the first laser rangefinder 40 and the third laser rangefinder 60, and Δhn is a vertical distance between the third laser rangefinder 60 and the detection point on the corresponding segment ring 20.
Further, when the industrial personal computer 80 controls the rotation of the third laser rangefinder 60, the industrial personal computer 80 obtains the included angle β between the third laser rangefinder 60 and the horizontal line.
In one embodiment, in the initial calculation, HA is an initial set value;
in the subsequent calculation process, the set elevation value HA of the first laser rangefinder 40 corresponding to the detection point in the current monitoring is the elevation value HB of the second laser rangefinder 50 corresponding to the detection point in the previous monitoring.
Since the distance between the first laser rangefinder 40 and the second laser rangefinder 50 is equal to the ring width of the segment ring 20, the first laser rangefinder 40 moves forward and aligns with the detection point corresponding to the second laser rangefinder 50 in the previous monitoring, i.e. the first laser rangefinder 40 still monitors the height of the detection point corresponding to the second laser rangefinder 50 in the previous monitoring in the current monitoring.
In the tunneling process of the shield, the cutting mechanism of the shield cuts the soil body, so that the soil body near the cutting mechanism of the shield head is disturbed, further, the segment ring 20 near the cutting mechanism of the shield head is easy to subside, the segment ring 20 far away from the cutting mechanism of the shield head is not affected by the cutting mechanism basically, namely, the segment ring 20 corresponding to the first laser range finder 40 is not considered to subside due to the fact that the segment ring 20 is far away from the cutting mechanism, and therefore, in the following calculation process, the set elevation value HA of the corresponding detection point of the current first laser range finder 40 is assigned to the elevation value HB of the corresponding detection point of the second laser range finder 50 in the monitoring data of the segment ring 20.
Further, when the shield completes the assembly of all segment rings 20 of the whole tunnel, the monitoring system stops monitoring.
Preferably, when the shield assembly completes the current segment ring 20, the third laser rangefinder 60 sequentially aligns with the current assembly ring and the detection points on the 8 segment rings 20 behind the current assembly ring, so as to measure a plurality of third distances D between the third laser rangefinder 60 and the detection points on the current assembly ring and the 8 segment rings 20 behind the current assembly ring.
By adopting the technical scheme, the application has the following beneficial effects:
the monitoring system belongs to the field of intelligent shields, relates to a hydrostatic leveling system, a laser range finder, an industrial personal computer and other combined technologies, and mainly aims at the problem of settlement monitoring in the range from an assembly ring to an assembly ring after the assembly ring in the shield construction process, and an automatic sleeve piece settlement monitoring system is reasonably planned, designed and built. The design structure is flexible, can monitor the shield from ring to ring 8 ring within the scope subsides after assembling the ring, and hydrostatic leveling system and laser range finder all settle in frame top middle part, can realize the acquisition of elevation benchmark along with the shield advances to set for the tunnelling distance automatic settlement observation, guarantee shield construction goes on smoothly. The hardware installation method and the calculation mode based on the automatic acquisition of the system elevation reference of the hydrostatic leveling system and the laser range finder realize the premise of automatic segment settlement observation. The hydrostatic leveling system and the real-time instruction control and data interaction of the plurality of laser rangefinders are key technologies for realizing automatic segment settlement observation. Compared with a manual monitoring mode, the automatic monitoring system is high in automation degree and accuracy.
It should be noted that, the structures, proportions, sizes and the like shown in the drawings attached to the present specification are used for understanding and reading only in conjunction with the disclosure of the present specification, and are not intended to limit the applicable limitations of the present application, so that any modification of the structures, variation of proportions or adjustment of sizes of the structures, proportions and the like should not be construed as essential to the present application, and should still fall within the scope of the disclosure of the present application without affecting the efficacy and achievement of the present application. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the application, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the application may be practiced.
Claims (10)
1. The utility model provides a shield constructs construction section of jurisdiction subsidence automatic monitoring system which characterized in that, monitoring system installs on the frame of shield tail, monitoring system includes:
the first laser distance measuring instrument and the second laser distance measuring instrument are vertically arranged on the top surface of the tail part of the frame and face the top of the duct piece ring and are connected with the industrial personal computer of the shield, the distance between the first laser distance measuring instrument and the second laser distance measuring instrument is equal to the ring width of the duct piece ring, the first distance delta ha1 between the first laser distance measuring instrument and the corresponding detecting point on the duct piece ring is measured through the first laser distance measuring instrument, and the second distance delta ha2 between the second laser distance measuring instrument and the corresponding detecting point on the duct piece ring is measured through the second laser distance measuring instrument;
the third laser distance measuring instrument is rotatably arranged on the top surface of the head of the frame and faces the top of the duct piece ring, the third laser distance measuring instrument, the first laser distance measuring instrument and the second laser distance measuring instrument are aligned and arranged in the horizontal direction, the third laser distance measuring instrument is connected with an industrial personal computer of the shield, and the industrial personal computer controls the third laser distance measuring instrument to rotate and adjust so that the third laser distance measuring instrument is sequentially aligned with the current assembly ring and detection points on a plurality of duct piece rings behind the current assembly ring, so as to measure a plurality of third intervals D between the third laser distance measuring instrument and the current assembly ring and the detection points on the plurality of duct piece rings behind the current assembly ring; and
the method comprises the steps that an elevation measuring device which is installed and connected to a first laser range finder, a second laser range finder and a third laser range finder is connected with an industrial personal computer of a shield, the elevation measuring device is used for measuring a first elevation difference delta hab of detection points corresponding to the first laser range finder and the second elevation difference delta hac of the first laser range finder and the third laser range finder, each shield is assembled to complete a ring segment ring, the first elevation difference delta hab, the second elevation difference delta hac, the first interval delta HA1, the second interval delta HA2 and the third interval D are measured, the elevation values HB of the detection points corresponding to the second laser range finder and the second elevation difference delta hac of the first laser range finder and the third laser range finder are calculated by combining the set elevation values HA of the first laser range finder, a plurality of detection point HN on the ring behind the current assembly ring are calculated, and a plurality of sedimentation sheet sets of values are assembled according to the elevation values of the ring.
2. The method of claim 1, wherein the high-rise measurement device comprises a first hydrostatic level mounted on the first laser rangefinder, a second hydrostatic level mounted on the second laser rangefinder, a third hydrostatic level mounted on the third laser rangefinder, a first water pipe and a first air pipe mounted between the first hydrostatic level and the second hydrostatic level, and a second water pipe and a second air pipe mounted between the second hydrostatic level and the third hydrostatic level;
the first hydrostatic level, the second hydrostatic level and the third hydrostatic level are sequentially connected and connected with an industrial personal computer of the shield.
3. The automatic shield construction segment settlement monitoring system according to claim 1, wherein the setting direction of the first laser range finder is identical to the direction of the central axis of the segment ring.
4. The automatic shield construction segment settlement monitoring system of claim 1, further comprising a cradle head mounted to a top surface of the frame head, wherein the third laser rangefinder is rotatably mounted to the cradle head.
5. A monitoring method using the shield construction segment settlement automatic monitoring system according to any one of claims 1 to 4, characterized by comprising the steps of:
when the shield assembly is completed on the current segment ring, the industrial personal computer controls the first laser distance meter to measure a first distance delta ha1 between the first laser distance meter and a detection point on the corresponding segment ring, and controls the second laser distance meter to measure a second distance delta ha2 between the second laser distance meter and the detection point on the corresponding segment ring;
the industrial personal computer controls the third laser range finders to rotate so that the third laser range finders are sequentially aligned with the current assembly ring and detection points on a plurality of segment rings behind the current assembly ring to measure a plurality of third distances D between the third laser range finders and the current assembly ring and among a plurality of detection points on the segment rings behind the current assembly ring;
the elevation measurement device measures a first elevation difference delta hab of the first laser range finder and the second laser range finder and a second elevation difference delta hac of the first laser range finder and the third laser range finder;
the industrial personal computer acquires the first elevation difference delta hab, the second elevation difference delta hac, the first interval delta HA1, the second interval delta HA2 and the third interval D at the current moment, and calculates an elevation value HB of a detection point corresponding to the second laser range finder, an elevation value HN of the detection point on the current assembly ring and a plurality of segment rings behind the current assembly ring by combining a set elevation value HA of the detection point corresponding to the first laser range finder;
along with continuous tunneling of the shield, the industrial personal computer acquires and calculates elevation values of detection points on the corresponding segment ring, and calculates sedimentation values of the segment ring according to differences of a plurality of groups of elevation values.
6. The method for monitoring the shield construction segment settlement automatic monitoring system according to claim 5, wherein the elevation value HB of the corresponding detection point of the second laser range finder is calculated according to the following formula:
HB＝HA-△ha1+△hab+△hb2；
the method comprises the steps of setting a height value of a detection point corresponding to a first laser range finder, setting a first distance between the first laser range finder and the detection point on a corresponding segment ring, setting a first height difference between the first laser range finder and a second laser range finder, and setting a second distance between the second laser range finder and the detection point on the corresponding segment ring as Δh2, wherein HA is the set height value of the detection point corresponding to the first laser range finder, and Δha1 is the first distance between the first laser range finder and the detection point on the corresponding segment ring.
7. The method for monitoring the shield construction segment settlement automatic monitoring system according to claim 5, wherein the vertical distance Δhn between the third laser range finder and the detection point on the corresponding segment ring is calculated according to the following formula:
△hn＝D*sin(β)；
and D is the distance between the third laser range finder and the detection point on the corresponding segment ring, and beta is the included angle between the third laser range finder and the horizontal line.
8. The method for monitoring the automatic shield construction segment settlement monitoring system according to claim 7, wherein the elevation value HN of the detection point corresponding to the third laser range finder is calculated according to the following formula:
HN＝HA-△ha1+△hac+△hn；
the HA is a set elevation value of a corresponding detection point of the first laser range finder, Δha1 is a first distance between the first laser range finder and the corresponding detection point on the segment ring, Δ hac is a second elevation difference between the first laser range finder and the third laser range finder, and Δhn is a vertical distance between the third laser range finder and the corresponding detection point on the segment ring.
9. The method for monitoring the automatic shield construction segment settlement monitoring system according to claim 7, wherein the industrial personal computer acquires an included angle beta between the third laser range finder and a horizontal line when the industrial personal computer controls the rotation of the third laser range finder.
10. The method for monitoring the automatic shield construction segment settlement monitoring system according to claim 5, wherein in the primary calculation, HA is an initial set value;
in the subsequent calculation process, the set elevation value HA of the corresponding detection point of the first laser range finder in the current monitoring is the elevation value HB of the corresponding detection point of the second laser range finder in the previous monitoring.
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