CN113266368A - Detection method applied to ultra-long distance shield axis positioning - Google Patents
Detection method applied to ultra-long distance shield axis positioning Download PDFInfo
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- CN113266368A CN113266368A CN202110619517.9A CN202110619517A CN113266368A CN 113266368 A CN113266368 A CN 113266368A CN 202110619517 A CN202110619517 A CN 202110619517A CN 113266368 A CN113266368 A CN 113266368A
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- 238000001514 detection method Methods 0.000 title claims abstract description 63
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 64
- 229910052742 iron Inorganic materials 0.000 claims abstract description 32
- 239000000523 sample Substances 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims abstract description 9
- 239000000945 filler Substances 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/003—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Geophysics And Detection Of Objects (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to a detection method applied to ultra-long distance shield axis positioning, which comprises the following specific steps: 1. measuring the direction and the slope of the embedded inclinometer pipe by using an inclinometer, measuring the upper central coordinate of the inclinometer pipe by using a ground coordinate system, and calculating the bottom coordinate A of the inclinometer pipe and the deviation of the top of the inclinometer pipe; 2. detecting the position of the vibration probe to the duct piece by using a vibration frequency receiver along the ring, and measuring and marking the position areas of an iron ball at the bottom of the inclinometer and the vibration probe; 3. starting ground penetrating radar detection, analyzing the positions of a solid iron ball and a corner reflector at the bottom of the embedded inclinometer pipe through a radar chromatogram, and fixing the detection hanging basket at the corresponding position; 4. and measuring the coordinate A 'of the L-shaped prism at the bottom center of the detection hanging basket by the control point in the tunnel, and calculating the deviation value of the coordinate value A of the center of the iron ball at the bottom of the inclinometer, which is measured by the ground control network coordinate system, and the coordinate value A' of the projection point of the center of the iron ball at the bottom of the inclinometer, which is measured by the control point in the tunnel. And forming the deviation of the actual three-dimensional coordinate of the final shield axis position and the design coordinate.
Description
Technical Field
The invention relates to a detection method in shield tunneling construction, in particular to a detection method applied to ultra-long distance shield axis positioning.
Background
The shield tunnel is constructed by driving a shield machine in a soil body, the shield machine cuts the soil body by a cutter head, a cylindrical steel shell provides working surface protection, segments assembled into a ring in the steel shell provide support for jack groups arranged in a circumferential shape, and then the jack groups are pushed forwards by the jacks, so that the large machine advancing in the soil body is realized. In the process of underground operation, the movement track of the shield tunneling machine basically forms an actual axis of the trend of the underground tunnel, and the actual axis of the tunnel is required to be as close as possible or completely matched with the designed axis so as to ensure the quality of tunnel engineering and further ensure the safety of the constructed underground road tunnel. Meanwhile, when the shield tunnel finally reaches the receiving well, the shield tunnel must accurately enter a preset steel hole door ring, otherwise, huge risks and losses are caused. Therefore, the real-time position of the shield machine must be accurately controlled strictly according to the design axis in the shield tunnel construction, the subsequent formed tunnel is ensured to meet the design requirement, and finally the shield machine is guided to accurately pass through the steel hole gate ring to enter the receiving well.
The method comprises the steps of guiding the advancing direction of the shield machine, needing a shield construction measurement technology, transmitting ground coordinates into a tunnel through shaft connection measurement, arranging branch leads in the tunnel, measuring measurement marks arranged on the shield machine in the longitudinal axis direction by using data of the branch leads, calculating three-dimensional coordinates of the head and tail centers of the shield machine according to the relation between the measurement marks and the head and tail centers of the shield machine, and comparing the three-dimensional coordinates with the designed axis of the tunnel so as to guide the shield machine to advance well along the designed axis.
However, due to the existence of the measurement error, for an ultra-long tunnel, after the length of the branch conductor reaches a certain length, the measurement error is slowly accumulated to exceed the design requirement of the tunnel axis, so that the ultra-long tunnel may not smoothly enter a receiving well, and great risk and loss of engineering are caused, or only an expensive high-precision gyroscope can be adopted, and the instrument cannot ensure that the tunnel is completely penetrated by one hundred percent due to less domestic application.
Disclosure of Invention
The invention aims to solve the defects of the measuring technology, provides the detection method which is low in cost, high in efficiency and intuitive in result and is applied to the ultra-long distance shield axis positioning, achieves rapidness and real-time performance, and effectively improves the measuring progress, the construction quality and the construction progress.
In order to achieve the purpose, the technical scheme of the invention is as follows: a detection method applied to ultra-long distance shield axis positioning specifically comprises the following steps:
(1) assembling a pre-buried inclinometer pipe, fixing a solid iron ball at the bottom of the pre-buried inclinometer pipe, installing a corner reflector and a vibration probe at the central position of the solid iron ball, connecting the vibration probe with a cable, placing and fixing the pre-buried inclinometer pipe to a pre-buried hole site, installing and fixing a measuring frame, erecting a prism at the central position of the top of the pre-buried inclinometer pipe, measuring the three-dimensional coordinate of the prism, measuring the direction and the slope of the pre-buried inclinometer pipe by using an inclinometer, and calculating the central deviation between the top and the bottom of the pre-buried inclinometer pipe; obtaining a coordinate value A of the center of an iron ball at the bottom of the inclinometer pipe measured by a ground control network coordinate system through calculation;
(2) connecting a power supply, a transformer 1 and a vibration frequency instrument, adjusting the transmitting frequency of the vibration frequency instrument to 85hz, connecting an electromagnetic wave signal transmitting device into a cable through a clamping wire, and starting the electromagnetic wave signal transmitting device to adjust the transmitting frequency to 200 Khz; around the segment with the same mileage in the shield tunnel, firstly using a vibration frequency receiver to detect the approximate position of a vibration probe along the circumferential direction of the segment, then using an electromagnetic wave signal receiver to detect the approximate position of a cable on an iron ball wound at the bottom of a pre-buried inclinometer, projecting the center position of the iron ball on the top of the segment in the tunnel, rechecking the detection positions for two times, and marking on the segment;
(3) placing the detection surface fixing device at the mark area, adjusting the pulley to the bottom of the surface to be detected, and controlling the hydraulic lifting column through the hydraulic controller to fix the duct piece filler and the detection plate to the top of the duct piece; connecting a detection hanging basket with a pulley on a detection plate through a turnbuckle screw, installing a ground penetrating radar at the central position of the detection hanging basket through a fixing bolt, starting the ground penetrating radar, sliding the detection hanging basket from left to right to complete primary detection, installing the detection hanging basket to a pulley in another Hafen groove of the detection plate, sliding the detection hanging basket from left to right to complete secondary detection, and translating the detection hanging basket to the center of the positions of a solid iron ball and a corner reflector at the bottom of an inclinometer through radar chromatographic chart analysis and fixing;
(4) the coordinate value of the L-shaped prism at the bottom center of the cradle is measured and detected by using a control point in the tunnel, namely the coordinate value A ' of the center of the iron ball at the bottom of the inclinometer pipe, which is measured by using the control point in the tunnel, the deviation value of the coordinate value A ' of the center of the iron ball at the bottom of the inclinometer pipe, which is measured by using a ground control network coordinate system, and the coordinate value A ' of the center of the iron ball at the bottom of the inclinometer pipe, which is measured by using the control point in the tunnel, is calculated, and the final result is formed: deviation of the actual three-dimensional coordinate of the shield axis position from the design coordinate.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the detection method can observe the detection data of the ultra-long distance shield axis positioning in real time. The technical problems that due to the existence of measurement errors, for an overlong tunnel, after the length of a branch conductor reaches a certain length, the measurement errors can be slowly accumulated to exceed the design requirement of the tunnel axis, so that the branch conductor can not smoothly enter a receiving well, and huge risks and losses of engineering are caused are solved. And the method is quick, real-time and capable of effectively improving the measurement progress, the construction quality and the construction progress.
Drawings
FIG. 1 is a schematic view of a detection apparatus of the present invention;
FIG. 2 is a schematic view of the ground penetrating radar detection of the present invention;
FIG. 3 is a schematic view of a detection cradle of the present invention;
FIG. 4 is a schematic flow diagram of the method of the present invention.
Detailed Description
The present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to 3, the detection method applied to the ultra-long shield axis positioning of the present invention employs a detection device, and the detection device includes a ground pre-buried device 1: pre-burying an inclinometer pipe 11, a solid iron ball 12, a corner reflector 13, a vibration probe 14, a vibration frequency instrument 15, a cable 16, a power supply 17 and a transformer 18; electromagnetic wave signal transmitting device 2: a wire clamp 21; in-tunnel detection apparatus 3: the device comprises a ground penetrating radar 31, an electromagnetic wave signal receiver 32, a vibration frequency receiver 33, a duct piece filler 34, a detection plate 35 (comprising a hafen groove 351 and a pulley 352), a detection hanging basket 36 (comprising a hanging basket frame 361, a basket screw 362 and a fixing bolt 363), and a detection surface fixing device (comprising a hydraulic lifting column 371, a hydraulic controller 372, a rail 373 and a pulley 374); the positioning device 4: an inclinometer 41, a fixed measuring frame 42, a prism 43 and an L-shaped prism 44.
As shown in fig. 4, the detection method applied to the ultra-long shield axis positioning of the present invention includes the following steps:
(1) assembling an embedded inclinometer pipe 11, fixing a solid iron ball 12 at the bottom of the embedded inclinometer pipe, installing a corner reflector 13 and a vibration probe 14 at the central position of the solid iron ball, connecting the vibration probe 14 with a cable 16, placing and fixing the embedded inclinometer pipe 11 to an embedded hole, installing and fixing a measuring frame 42, erecting a prism 43 at the central position of the top of the embedded inclinometer pipe 11, measuring the three-dimensional coordinate of the prism 43, measuring the direction and the slope of the embedded inclinometer pipe 11 by an inclinometer 41, and calculating the central deviation between the top and the bottom of the embedded inclinometer pipe; and calculating to obtain a coordinate value A of the center of the iron ball 12 at the bottom of the inclinometer pipe, which is measured by a ground control network coordinate system.
(2) The power supply 17 and the transformer 18 are connected, and the vibration frequency instrument 15 is connected to adjust the transmitting frequency to 85 hz. The electromagnetic wave signal emission device 2 is connected with the cable 16 through the clamp wire 21, and the electromagnetic wave signal emission device 2 is started to adjust the emission frequency to 200 Khz. Around the same mileage pipe piece in the shield tunnel, firstly using a vibration frequency receiver 33 to extend to the approximate position of a pipe piece detection vibration probe 14, making an area mark on the pipe piece, then using an electromagnetic wave signal receiver 32 to detect the approximate position of a cable 16 on an iron ball wound on the bottom of an embedded inclinometer pipe 11, projecting the central position of the iron ball 12 on the top of the pipe piece in the tunnel, rechecking the detection position for two times, and making a mark on the pipe piece.
(3) The detection surface fixing device is arranged at the position of the mark area, the pulley 374 is adjusted to the bottom of the surface to be detected, and the hydraulic controller 372 controls the hydraulic lifting column 371 to fix the segment filler 34 and the detection plate 35 to the top of the segment. The detection hanging basket 36 is connected with the pulley 352 on the detection plate 35 through a turnbuckle 362. And the ground penetrating radar 31 is arranged at the center of the detection hanging basket 36 through a fixing bolt 363. The ground penetrating radar 31 is started, the hanging basket 36 is detected from left to right, primary detection is completed, the detection hanging basket 36 is installed to a pulley 352 in the other Hafenz groove 351 of the detection plate 35, the detection hanging basket 36 slides from left to right to complete secondary detection, and the detection hanging basket 36 is translated to the center of the positions of the solid iron ball 12 and the corner reflector 13 at the bottom of the inclinometer and is fixed through radar chromatogram analysis.
(4) The coordinate value of the L-shaped prism 44 at the bottom center of the detection hanging basket 36 is measured by using the control point in the tunnel, namely the coordinate value A' of the center of the iron ball 12 at the bottom of the inclinometer pipe is measured by using the control point in the tunnel. And calculating the deviation value of the coordinate value A of the center of the iron ball 12 at the bottom of the inclinometer, which is measured by the ground control network coordinate system, and the coordinate value A' of the center of the iron ball 12 at the bottom of the inclinometer, which is measured by the control point in the tunnel. And (3) forming a final result: deviation of the actual three-dimensional coordinate of the shield axis position from the design coordinate.
Claims (1)
1. A detection method applied to ultra-long distance shield axis positioning is characterized by comprising the following specific steps:
(1) assembling a pre-buried inclinometer pipe, fixing a solid iron ball at the bottom of the pre-buried inclinometer pipe, installing a corner reflector and a vibration probe at the central position of the solid iron ball, connecting the vibration probe with a cable, placing and fixing the pre-buried inclinometer pipe to a pre-buried hole site, erecting a prism at the central position of the top of the pre-buried inclinometer pipe, measuring the three-dimensional coordinate of the prism, measuring the direction and the slope of the pre-buried inclinometer pipe by using an inclinometer, and calculating the central deviation between the top and the bottom of the pre-buried inclinometer pipe; obtaining a coordinate value A of the center of an iron ball at the bottom of the inclinometer pipe measured by a ground control network coordinate system through calculation;
(2) connecting a power supply, a transformer 1 and a vibration frequency instrument, and adjusting the transmission frequency of the vibration frequency instrument to 85 hz; the electromagnetic wave signal transmitting device is connected to the cable through a clamping wire, and the electromagnetic wave signal transmitting device is started to adjust the transmitting frequency to 200 Khz; around the segment with the same mileage in the shield tunnel, firstly using a vibration frequency receiver to detect the approximate position of a vibration probe along the circumferential direction of the segment, then using an electromagnetic wave signal receiver to detect the approximate position of a cable on an iron ball wound at the bottom of a pre-buried inclinometer, projecting the center position of the iron ball on the top of the segment in the tunnel, rechecking the detection positions for two times, and marking on the segment;
(3) placing the detection surface fixing device at the mark area, adjusting the pulley to the bottom of the surface to be detected, and controlling the hydraulic lifting column through the hydraulic controller to fix the duct piece filler and the detection plate to the top of the duct piece; connecting a detection hanging basket with a pulley on a detection plate through a turnbuckle screw, installing a ground penetrating radar at the central position of the detection hanging basket through a fixing bolt, starting the ground penetrating radar, sliding the detection hanging basket from left to right to complete primary detection, installing the detection hanging basket to a pulley in another Hafen groove of the detection plate, completing secondary detection by detecting the hanging basket from left to right, and translating the detection hanging basket to the center of the positions of a solid iron ball and a corner reflector at the bottom of an inclinometer through radar chromatogram analysis and fixing;
(4) the coordinate value of the L-shaped prism at the bottom center of the cradle is measured and detected by using a control point in the tunnel, namely the coordinate value A ' of the center of the iron ball at the bottom of the inclinometer pipe, which is measured by using the control point in the tunnel, and the deviation value of the coordinate value A ' of the center of the iron ball at the bottom of the inclinometer pipe, which is measured by using a ground control network coordinate system, and the coordinate value A ' of the projection point of the center of the iron ball at the bottom of the inclinometer pipe, which is measured by using the control point in the tunnel, is calculated, so that the final result is formed: deviation of the actual three-dimensional coordinate of the shield axis position from the design coordinate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110619517.9A CN113266368B (en) | 2021-06-03 | 2021-06-03 | Detection method applied to ultra-long distance shield axis positioning |
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| CN202110619517.9A CN113266368B (en) | 2021-06-03 | 2021-06-03 | Detection method applied to ultra-long distance shield axis positioning |
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| CN113266368A true CN113266368A (en) | 2021-08-17 |
| CN113266368B CN113266368B (en) | 2022-04-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114608546A (en) * | 2022-02-28 | 2022-06-10 | 上海市基础工程集团有限公司 | Device and method for measuring penetration of ultra-long distance shield tunnel |
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