CN109596112B - Measuring method for controlling long-distance construction of large-diameter shield tunneling machine to smoothly go out of tunnel - Google Patents
Measuring method for controlling long-distance construction of large-diameter shield tunneling machine to smoothly go out of tunnel Download PDFInfo
- Publication number
- CN109596112B CN109596112B CN201811484974.6A CN201811484974A CN109596112B CN 109596112 B CN109596112 B CN 109596112B CN 201811484974 A CN201811484974 A CN 201811484974A CN 109596112 B CN109596112 B CN 109596112B
- Authority
- CN
- China
- Prior art keywords
- hole
- point
- measurement
- tunneling machine
- spotting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/002—Active optical surveying means
- G01C15/004—Reference lines, planes or sectors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
A measuring method for controlling long-distance construction of a large-diameter shield tunneling machine to smoothly exit a hole is characterized in that a throwing point hole and a segment through hole are drilled, throwing point measurement, gyro directional measurement, achievement application and throwing point hole sealing are carried out to control long-distance construction of the large-diameter shield tunneling machine to smoothly exit the hole, the invention combines a plurality of measurement modes such as lead measurement, throwing point measurement, gyro directional measurement and the like, the problem that the long-distance construction of the large-diameter shield tunneling machine to smoothly exit the hole under the conditions of sandy soil zones, subsidence areas and large subsidence displacement is solved, the horizontal deviation and the elevation deviation of the slurry shield tunneling machine after exiting the hole are controlled to be +/-0.05-0.1 meter, the requirement of reserved +/-0.15 meter is met, and the penetration precision is improved.
Description
Technical Field
The invention belongs to the technical field of shield tunneling machine construction measurement, and particularly relates to a measurement method for controlling long-distance construction of a large-diameter shield tunneling machine to smoothly exit a tunnel.
Background
For a large-diameter shield tunneling machine with a tunnel diameter of more than 10 meters and a construction distance of more than 3000 meters, when the shield tunneling machine tunnels to a receiving well of 300-400 meters, a construction control network in a tunnel needs to be retested, and the retesting process may have the following problems:
a portal receiving steel ring is pre-buried in the receiving well, and the shield machine is guaranteed to smoothly penetrate out from the portal receiving steel ring with the reserved deviation amount of +/-0.15 m on the assumption that the excavation diameter of the shield machine is 10.9 m, and the designed inner diameter of the receiving steel ring is 11.2 m.
For a general diameter shield machine with the tunnel diameter smaller than 10 meters and the construction distance smaller than 3000 meters, when the shield machine is about to reach a portal to receive a steel ring, a total station with high precision is adopted to perform retest on main and auxiliary leads, and the retest data precision basically can meet the construction requirements of the shield machine.
However, for the construction of the large-diameter long-distance shield machine, especially for the shield machine in a sandy soil area and a subsidence area, under the condition that the tunnel subsidence displacement is relatively large, the measurement method that the steel ring is smoothly penetrated out from the portal receiving steel ring with the reserved deviation amount of +/-0.15 meter and the smooth exit needs to be determined again by adopting the retesting method cannot be met.
Disclosure of Invention
In order to solve the problems, the invention provides a measuring method for controlling the long-distance construction of a large-diameter shield tunneling machine to smoothly go out of a hole.
In order to achieve the purpose, the invention adopts the following technical scheme:
a measuring method for controlling long-distance construction of a large-diameter shield tunneling machine to smoothly go out of a tunnel is provided, the excavation diameter of the shield tunneling machine is set to be 10.9 meters, the designed inner diameter of a receiving steel ring is set to be 11.2 meters, and the reserved deviation amount is +/-0.15 meter, and the measuring method is characterized in that:
I. drilling a drop point hole and a segment through hole in the first step: taking a receiving well as a standard, sequentially configuring a rear viewpoint and a station point on the ground behind the receiving well, namely the tunneling reverse direction of a shield machine, wherein the rear viewpoint and the station point belong to a ground measurement control network, drilling a drop point hole on the ground above a tunnel behind the station point by adopting a rotary drilling rig, controlling the distance between the drop point hole and the receiving well to be 300-400 m, controlling the diameter of the drop point hole to be 0.8-1.2 m, drilling a segment through hole with the diameter not less than 0.15 m at the contact part of the drop point hole and a segment by adopting a steel protective cylinder as a protective wall after manual hole cleaning, and pre-burying a steel plate with the diameter of 0.2 multiplied by 0.2 m at the bottom of the segment vertical to the segment through hole;
II. Secondly, casting point measurement: erecting a tripod of the laser spotting instrument above a spotting hole on the ground, taking a base of the tripod as a front spotting point, enabling a laser ray of the laser spotting instrument to penetrate through a duct piece through hole and irradiate on the steel plate to obtain a spotting coordinate TD1(X1, Y1), then removing the laser spotting instrument and arranging a circular prism on the tripod base, erecting the total station on a surveying station, firstly, aiming the total station at the circular prism on the rear spotting point to finish measuring orientation, then, aiming the total station at the circular prism on the front spotting point and measuring the front spotting coordinate, wherein the front spotting point coordinate is coincided with a spotting coordinate TD1(X1, Y1);
III, third step of gyro orientation measurement: under the conditions of 300-400 m behind the projection point and through vision, a lead wire DX1 is buried at the bottom of the tunnel, a circular prism is erected on the projection point, a gyroscope is erected at the lead wire point, the circular prism is observed directionally through the gyroscope, and a directional value beta of the direction of measurement is recorded1(ii) a Erecting a gyroscope on the throwing point, erecting a circular prism on the conducting wire point, finishing the directional observation work of the circular prism through the gyroscope, and recording a return measurement directional value beta2According to α1＝{(β1+β2180 deg. + -.) + gamma to the azimuthal angle alpha of DX1 → TD11Gamma is the gyro correction constant, 180 deg. is a constant;
IV, achievement application in the fourth step: the projection coordinates TD1(X1, Y1) and the azimuth angle alpha are respectively obtained according to the II and the III1Check-upCorrecting the horizontal and elevation deviations of the current position of the shield tunneling machine by adopting the method once every 50 meters of tunneling of the shield tunneling machine, actually measuring the central coordinate of a receiving steel ring except the correction according to the method when the shield tunneling machine tunnels to the position of 50 meters of a receiving well, enabling the central coordinate of a cutter head of the shield tunneling machine to tunnel according to the actual central coordinate of the receiving steel ring of a tunnel portal, and controlling the horizontal and elevation deviations of the cutter head of the shield tunneling machine within +/-5 centimeters until the shield tunneling machine smoothly exits the tunnel; after the shield machine goes out of the tunnel, the shield machine passes through a cast point coordinate TD1(X1, Y1) and an azimuth angle alpha again1Level and elevation deviation of the rechecking shield machine during exit are compared with the reserved deviation amount +/-0.15 meter;
v, point throwing hole sealing in the fifth step: adopt the micro-expansion to mix earth and carry out section of jurisdiction through-hole shutoff after above-mentioned III accomplishes, later do the waterproof layer on section of jurisdiction through-hole upper portion, then pour the two meters high micro-expansion concrete on section of jurisdiction through-hole waterproof layer, it can to adopt fine sand to fill to ground and compaction flattening to remain throwing some hole landfills.
Compared with the prior art, the invention has the following advantages:
1. the measuring method can accurately transmit the coordinates of the ground measuring control point to the control edge in the tunnel, and provides a reliable coordinate starting point for subsequent tunneling construction.
2. The measuring method can effectively avoid the transmission of the orientation error of the wire through the gyro orientation measurement, and provides a reliable calculation orientation for the subsequent tunneling construction.
3. The measuring method combines a plurality of measuring methods such as wire measurement, point measurement, gyro orientation measurement and the like, and can effectively improve the tunnel penetration precision.
Drawings
FIG. 1 is a schematic diagram of the position of a dispensing orifice according to the present invention.
FIG. 2 is a schematic diagram of the gyro orientation measurement of the present invention.
In the above figures: 1-receiving well, 2-portal receiving steel ring, 3-rear view point, 4-measuring point, 5-front view point, 6-laser ray, 7-segment through hole, 8-projection point TD1, 9-lead point DX1, 10-circular prism and 11-gyroscope.
Detailed Description
The invention is described in detail below with reference to the accompanying figures 1-2 and specific examples.
Drilling a drop point hole and a segment through hole in the first step: for a large-diameter slurry shield machine, although normal tunneling can control the tunneling direction of the slurry shield machine through a construction measurement control net, smooth passing through a receiving steel ring cannot be guaranteed, the receiving steel ring is limited by the diameter of the receiving steel ring and a cutter head of the slurry shield machine cannot be damaged, so that the relative position relationship between the slurry shield machine and the receiving steel ring needs to be rechecked, a throwing point hole is arranged 300-400 meters away from a receiving well to be an optimal choice, the deviation rectification of the large-diameter slurry shield machine is not facilitated when the throwing point hole is smaller than 300 meters, the deviation rectification effect when the throwing point hole is larger than 400 meters is not ideal, the diameter of the throwing point hole is controlled to be 1.2 meters, the drilling and the rotary drilling are stopped when the rotary drilling reaches a contact position with a segment, the drilling depth is 26.5 meters, 9 sections of steel protective cylinders which are machined and are 3 meters each are connected to the contact position through welding to form a throwing point hole protective wall, the steel protective cylinders which are 0.5, and pumping and discharging slurry in the throwing point hole, manually cleaning the hole, vertically drilling a segment through hole with the diameter of 0.15 meter at the contact position of the throwing point hole and the segment through a water drill, and pre-burying a steel plate with the diameter of 0.2 multiplied by 0.2 meter at the bottom of the segment vertical to the segment through hole and welding and fixing the steel plate on the segment through expansion bolts.
Secondly, casting point measurement: the two problems are solved, the first problem is that a ground control net is used for solving the reference problem of the throw-point hole, and the second problem is that the throw-point hole is used for solving the throw-point on the steel plate in the tunnel.
Thirdly, the gyroscope is directionally measured; determining the starting azimuth angle alpha of the directional side by a gyroscope according to the projection point coordinate TD1(X1, Y1) as the starting point of the directional side1。
The fourth step is achievement application: by the above-mentioned projection coordinates TD1(X1, Y1) and azimuth angle alpha1And the accurate tunnel exit of the slurry shield machine can be ensured by retesting every 50 meters, and the horizontal deviation and the elevation deviation of the slurry shield machine after tunnel exit are controlled to be +/-0.05-0.1 meter through retesting, so that the requirement of the reserved deviation amount to be +/-0.15 meter is met.
And finally, chiseling the inner wall of the through hole of the segment, fixing a steel plate with the size of 0.5 multiplied by 0.08 m below the through hole by using an expansion bolt to serve as a plugging template, then plugging the through hole of the segment by adopting micro-expansion concrete, chiseling the segment on the upper part of the through hole of the segment and making a waterproof layer, then pouring micro-expansion concrete with the height of two meters on the waterproof layer of the through hole of the segment, and filling the residual throwing point hole to the ground by adopting fine sand and compacting and leveling.
The part which is not described above refers to the technical scheme. The invention combines a plurality of measuring modes such as wire measurement, throw point measurement, gyro directional measurement and the like, solves the problem that the slurry shield machine ensures that the long-distance construction of the large-diameter shield machine can smoothly go out of the tunnel under the conditions of sandy soil area, subsidence area and larger subsidence displacement, and improves the penetration precision.
Claims (1)
1. A measuring method for controlling long-distance construction of a large-diameter shield tunneling machine to smoothly go out of a tunnel is provided, the excavation diameter of the shield tunneling machine is set to be 10.9 meters, the designed inner diameter of a receiving steel ring is set to be 11.2 meters, and the reserved deviation amount is +/-0.15 meter, and the measuring method is characterized in that:
I. drilling a drop point hole and a segment through hole in the first step: taking a receiving well as a standard, sequentially configuring a rear viewpoint and a station point on the ground behind the receiving well, namely the tunneling reverse direction of a shield machine, wherein the rear viewpoint and the station point belong to a ground measurement control network, drilling a drop point hole on the ground above a tunnel behind the station point by adopting a rotary drilling rig, controlling the distance between the drop point hole and the receiving well to be 300-400 m, controlling the diameter of the drop point hole to be 0.8-1.2 m, drilling a segment through hole with the diameter not less than 0.15 m at the contact part of the drop point hole and a segment by adopting a steel protective cylinder as a protective wall after manual hole cleaning, and pre-burying a steel plate with the diameter of 0.2 multiplied by 0.2 m at the bottom of the segment vertical to the segment through hole;
II. Secondly, casting point measurement: erecting a tripod of the laser spotting instrument above a spotting hole on the ground, taking a base of the tripod as a front spotting point, enabling a laser ray of the laser spotting instrument to penetrate through a duct piece through hole and irradiate on the steel plate to obtain a spotting coordinate TD1(X1, Y1), then removing the laser spotting instrument, placing a circular prism on the base of the tripod, erecting the total station on a surveying station, firstly, finishing measurement and orientation by using a circular prism on a rear spotting point of the total station for sighting, then, sighting the circular prism on the front spotting point by the total station and measuring a front spotting point coordinate, wherein a projection point of the front spotting point in the tunneling direction is coincided with the spotting point;
III, third step of gyro orientation measurement: under the conditions of 300-400 m behind the projection point and through vision, a lead wire DX1 is buried at the bottom of the tunnel, a circular prism is erected on the projection point, a gyroscope is erected at the lead wire point, the circular prism is observed directionally through the gyroscope, and a directional value beta of the direction of measurement is recorded1(ii) a Erecting a gyroscope on the throwing point, erecting a circular prism on the conducting wire point, finishing the directional observation work of the circular prism through the gyroscope, and recording a return measurement directional value beta2According to α1＝{(β1+β2180 deg. + -.) + gamma to the azimuthal angle alpha of DX1 → TD11Gamma is the gyro correction constant, 180 deg. is a constant;
IV, achievement application in the fourth step: the projection coordinates TD1(X1, Y1) and the azimuth angle alpha are respectively obtained according to the II and the III1Rechecking the horizontal and elevation deviations of the current position of the shield tunneling machine and correcting the deviation, wherein the shield tunneling machine corrects the deviation once by adopting the mode every 50 meters, when the shield tunneling machine tunnels to a receiving well 50 meters, the actual central coordinate of a receiving steel ring is measured except the deviation correction according to the mode, the central coordinate of a cutter head of the shield tunneling machine is tunneled according to the actual central coordinate of the receiving steel ring of a tunnel portal, and the horizontal and elevation deviations of the cutter head of the shield tunneling machine are controlled within +/-5 centimeters until the shield tunneling machine smoothly exits the tunnel; after the shield machine goes out of the tunnel, the shield machine passes through a cast point coordinate TD1(X1, Y1) and an azimuth angle alpha again1Level and elevation deviation of the rechecking shield machine during exit are compared with the reserved deviation amount +/-0.15 meter;
v, point throwing hole sealing in the fifth step: adopt the micro-expansion to mix earth and carry out section of jurisdiction through-hole shutoff after above-mentioned III accomplishes, later do the waterproof layer on section of jurisdiction through-hole upper portion, then pour the two meters high micro-expansion concrete on section of jurisdiction through-hole waterproof layer, it can to adopt fine sand to fill to ground and compaction flattening to remain throwing some hole landfills.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811484974.6A CN109596112B (en) | 2018-12-06 | 2018-12-06 | Measuring method for controlling long-distance construction of large-diameter shield tunneling machine to smoothly go out of tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811484974.6A CN109596112B (en) | 2018-12-06 | 2018-12-06 | Measuring method for controlling long-distance construction of large-diameter shield tunneling machine to smoothly go out of tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109596112A CN109596112A (en) | 2019-04-09 |
| CN109596112B true CN109596112B (en) | 2021-03-16 |
Family
ID=65962090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811484974.6A Active CN109596112B (en) | 2018-12-06 | 2018-12-06 | Measuring method for controlling long-distance construction of large-diameter shield tunneling machine to smoothly go out of tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109596112B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242317B (en) * | 2019-06-25 | 2022-03-22 | 中铁一局集团有限公司 | Transverse precision control method for shield tunnel |
| CN112983436B (en) * | 2021-03-15 | 2023-07-14 | 中铁隆工程集团有限公司 | Water-rich shield interval measurement cast point punching construction method |
| CN114198093B (en) * | 2021-10-29 | 2023-11-24 | 中铁十九局集团第五工程有限公司 | Measuring method for subway shield tunnel |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7557491B2 (en) * | 2006-02-09 | 2009-07-07 | Citizen Holdings Co., Ltd. | Electronic component package |
| CN101684731B (en) * | 2008-09-27 | 2013-02-27 | 上海市机械施工有限公司 | Measuring method of tunnel shield posture |
| US8210774B1 (en) * | 2010-05-20 | 2012-07-03 | Astec Industries, Inc. | Guided boring machine and method |
| CN205638466U (en) * | 2016-04-22 | 2016-10-12 | 中铁十二局集团第二工程有限公司 | Interval shield tunnel ground drilling cultellation retest device of speciality |
-
2018
- 2018-12-06 CN CN201811484974.6A patent/CN109596112B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109596112A (en) | 2019-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109653755B (en) | Construction method for large-diameter slurry shield to pass through ballastless track roadbed without settlement | |
| CN109596112B (en) | Measuring method for controlling long-distance construction of large-diameter shield tunneling machine to smoothly go out of tunnel | |
| CN106837352A (en) | Fault belt surrounding rock tunnel construction method | |
| CN209444350U (en) | Shield launching wears existing shield tunnel barrel vault advanced support structure under being | |
| CN104846829B (en) | Shield-reserved penetration composite type foundation pit support wall and construction method thereof | |
| CN110344842A (en) | Main traffic road pipe curtain construction is worn under Subway tunnel | |
| CN205172598U (en) | Pipe curtain spouts a supporting construction soon | |
| CN103244128A (en) | Method for constructing large-section karst tunnels through double sidewall pilot tunnel and reservation core soil methods | |
| CN106382121A (en) | Measuring method for subway tunnel shield excavation | |
| CN104500077A (en) | Construction method for enabling shallowly buried and darkly excavated tunnel to pass through cottage area | |
| CN101598023B (en) | Control method for shield tunnel axis having underground structure on adjacent side | |
| CN110306531A (en) | High water level erratic boulder stratum construction of diaphragm wall technique | |
| CN109610441A (en) | It is a kind of to use hydraulic vertical adjustment frame inverse method one-column one-pile construction method | |
| CN108755671B (en) | Construction method of triaxial mixing pile of water-rich gravel layer | |
| CN108316283A (en) | The devices and methods therefor of influence of foundation excavation is controlled using hole rising pouring slurry ground-connecting-wall | |
| CN112049648B (en) | Pipe jacking construction monitoring control method | |
| CN107152042A (en) | Churning clump of piles occlusion reinforcing engineering method is tilted for wearing the micro-disturbance in house under shield | |
| CN103850261A (en) | In-rock deep foundation pit rock-socketed water-stop curtain construction method | |
| CN112696207A (en) | Construction method of overlong large pipe shed of shallow-buried bias-pressure underground excavation tunnel | |
| CN106193034B (en) | Photovoltaic plant spiral steel pipe pile construction method | |
| CN116335679B (en) | Pipe curtain support and horizontal jet grouting pile combined closed loop advanced support method | |
| CN110067561A (en) | Under wear both wired Urban Underground mining sectbn construction methods | |
| CN108590668A (en) | A kind of Station overlength pipe shed trombone slide method | |
| CN115012957A (en) | Safe and efficient tunneling construction process for large-section extra-long tunnel under complex condition | |
| CN113685198A (en) | Pipe jacking construction device and construction process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |