CN102095401A - Long-distance shield tunnel breakthrough survey method - Google Patents
Long-distance shield tunnel breakthrough survey method Download PDFInfo
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- CN102095401A CN102095401A CN 201010573853 CN201010573853A CN102095401A CN 102095401 A CN102095401 A CN 102095401A CN 201010573853 CN201010573853 CN 201010573853 CN 201010573853 A CN201010573853 A CN 201010573853A CN 102095401 A CN102095401 A CN 102095401A
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Abstract
The invention relates to a long-distance shield tunnel breakthrough survey method, which comprises the following steps of: 1) constructing a vertical jacking hole; 2) hanging steel wires by using plumb bobs; 3) measuring the actual distance and the actual azimuth angle between the two steel wires; 4) surveying a guide wire underground; 5) calculating a surveyed result; and 6) modifying the posture data of a shield machine before breakthrough according to the calculated result, and finally guiding the shield machine to precisely reach a receiving well or the preset place. The method has the advantages of low cost, high efficiency, good effect and wide application range, can quickly and precisely optimize the surveying of the construction control guide wires in the tunnel so as to achieve the effects of obtaining more precision shield posture and ensuring the tunnel engineering quality, is applicable for improving the breakthrough precision of all kinds of long-distance shield tunnels satisfying the construction condition of the vertical jacking.
Description
Technical field
The present invention is the construction survey technology in a kind of shield tunnel, relates to the accurate holing-through survey method of a kind of speciality shield tunnel based on the sagging steel wire in vertical jacking hole.
Background technology
Shield tunnel is to be tunneled in the soil body by shield machine to finish construction; shield machine be one by the knife cutting soil body; provide the workplace protection by cylindric box hat; relying on the section of jurisdiction that is assembled into ring in the box hat awards the lifting jack group that is circle-shaped layout and provides support; promote forward by lifting jack then, thereby be implemented in the large-scale machine that advances in the soil body.In the process of underground work, the movement locus of shield machine will basically form the actual axis of subterranean tunnel trend, the actual axis in engine request tunnel should be tried one's best approaching or be fitted like a glove design axis (DTA), with the quality of assurance Tunnel Engineering, thus the safety after guarantee road tunnel tunnel builds up.Simultaneously, shield tunnel must enter into accurately in the default steel portal circle, otherwise can shine into huge risk and loss when finally arriving received well.Therefore the real time position of shield machine must be accurately controlled in the shield tunnel construction in strict accordance with the design axis, guarantees that the tunnel after the follow-up moulding adheres to specification, and finally instructs shield machine accurately to pass steel portal circle and enters received well.
Instruct the shield machine working direction, need the shield-tunneling construction measuring technique, prior art is that ground coordinate is delivered in the tunnel by shaft connection survey, and in the tunnel, lay open traverse, utilize the DATA REASONING shield machine of open traverse to be laid in survey mark on the shield structure y direction, last relation according to survey mark and shield machine rostral-caudal center, calculate the head of shield machine, the three-dimensional coordinate at afterbody center, relatively they with Tunnel Design axis (DTA) between deviation, thereby instruct shield machine well to advance along designing axis.
But, because the existence of measuring error, tunnel for overlength, after open traverse length reaches certain-length, measuring error will slowly be accumulated to and exceed the Tunnel Design requirement, thereby can not enter received well smoothly, according to becoming engineering great risk and loss, perhaps can only adopt expensive high accuracy gyroscope instrument and this instrument can not guarantee the deficiency that the tunnel absolutely connects fully because domestic application is few, prior art cost height, efficient are low, can't be applicable to the over distance shield tunnel.
Summary of the invention
Fundamental purpose of the present invention is: a kind of low cost is provided, and high-level efficiency, visual results is applicable to the accurate holing-through survey method in ultra long haul shield method tunnel.
For achieving the above object, the invention provides a kind of long-distance shield structure method tunnel holing through measuring method, may further comprise the steps:
1) vertical jacking hole construction;
2) hang the steel wire plumb bob: hang in a steel wire to tunnel bottom from ground by starting well and vertical jacking hole respectively, and insert in the oil drum of tunnel bottom sinking behind the colligation iron plumb bob until steadily;
3) measure actual range and true bearing angle between two steel wires: the actual cities coordinate of two steel wires in ground observation starting well and vertical jacking hole, and calculate two actual range and true bearing angles between the steel wire;
4) carrying out underground conducting wire measures: the Construction control lead is set in the tunnel, and on described lead, get a plurality of measurement points, with starting well and two steel wires in the vertical jacking hole is starting point and the terminal point of measuring lead, measures the position angle and the distance of each measurement point of whole tunnel internal Construction control lead;
5) measuring achievement calculates: the position angle of suppose the interior steel wire of starting well first measurement point of Construction control lead in the tunnel is 90 °, the position angle and the distance of each measurement point of the tunnel inside conductor that records according to step 4, calculate the city increment of coordinate of each measurement point of lead and vertical jacking hole place steel wire, inverse goes out in the tunnel distance and bearing angle of two steel wires in the starting well and vertical jacking hole;
6) the attitude of shield machine data before revise connecting according to calculating achievement: the difference value of measuring the distance and bearing angle between two steel wires that the ground actual measurement calculates in the calculating of achievement and the step 3 according to tunnel internal in the step 5, by calculating adjustment, the final optimization data of determining Construction control lead in the tunnel, remeasure shield attitude according to these data then, draw shield attitude more accurately, finally instruct shield machine accurately to arrive the received well or the predetermined area;
Described step 6 further may further comprise the steps:
In the tunnel that inverse goes out in distance in starting well that draws according to the actual cities coordinate Calculation in the definition step 3 and the vertical jacking hole between two steel wires and the step 5 in starting well and the vertical jacking hole ratio of the distance of two steel wires be R; And the starting well that draws according to the actual cities coordinate Calculation in the position angle of two steel wires and the step 3 in starting well and the vertical jacking hole in the tunnel that inverse goes out in the step 5 and vertically in the jacking hole the azimuthal difference between two steel wires be △ A;
The position angle of measurement point in the tunnel lead is deducted △ A, and according to carrying out distance correction, the distance and bearing angle between each measurement point of the lead that must make new advances between R each measurement point to the tunnel inside conductor;
By calculating, draw the increment of coordinate value and the coordinate of each measurement point of the Construction control lead tunnel in again, draw shield attitude more accurately, when making construction to vertical jacking hole, the coordinate of its cable wire is consistent with the ground actual measured value.
The present invention has low cost, efficient height, advantage effective and applied widely, can optimize Control Survey for Construction lead in the tunnel fast accurately, reach the effect of obtaining shield attitude more accurately, guaranteeing the Tunnel Engineering quality, be applicable to improve and satisfy all types of shield method length of vertical jack-up construction condition apart from the tunnel holing through precision.
Description of drawings
Fig. 1 is the overall schematic of tunnel vertical jacking hole measurement method; And
Fig. 2 is the synoptic diagram of measuring steel wire coordinate.
Embodiment
Present embodiment has adopted technical method of the present invention to construct, and provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
This specific embodiment is an example with certain shield tunnel construction, and this project adopts the shield-tunneling construction of diameter phi 7.5m, and shield structure main frame length overall is a 9m rice, tunneling shield driving total length 7.5km; And use vertical jacking measuring method of the present invention and realize accurately connecting (in the example, calculate, change 7.5km into 750 m) for simplifying.This instrumentation plan as depicted in figs. 1 and 2, particular content is as follows:
1) vertical jacking hole construction;
2) hang the steel wire plumb bob: hang in a Φ 0.3 mm steel wire 11,21 to tunnel bottom from ground by starting well 10 and vertical jacking hole 20 respectively, and insert in the oil drum of tunnel bottom sinking behind the colligation 30kg iron plumb bob 12,22 until steadily;
3) actual range and the true bearing angle between two steel wires of measurement: utilize tunnel terrestrial net data, adopt the surveying instrument actual cities coordinate of two steel wires in ground observation starting well and vertical jacking hole respectively, and calculate two actual range and true bearing angles between the steel wire; Present embodiment obtains steel wire coordinate in the starting well by this step: X1=+1230.880, Y1=+674.350; Steel wire coordinate in the vertical jacking hole: X2=+1845.690, Y2=+1039.980; Calculate the actual range between steel wire 11 and 21: S=+715.78, true bearing angle A=30 ° 48 ' 07 ";
4) carrying out underground conducting wire measures: the Construction control lead is set in the tunnel, and on described lead, get a plurality of measurement points 30,40,50,60, serves as starting point and the terminal point of measuring lead with starting well 10 with vertical jacking hole 20 interior two steel wires 11,21, measure the position angle and the distance of each measurement point of whole tunnel internal Construction control lead, obtain data as described in Table 1;
Table 1
5) measuring achievement calculates: the position angle of suppose the interior steel wire 11 of starting well 10 first measurement point 30 of Construction control lead in the tunnel is 90 °, the position angle and the distance of each measurement point of the tunnel inside conductor that records according to step 4, calculate city increment of coordinate (the △ X of each measurement point of lead and vertical jacking hole 20 place's steel wires 21, △ Y), inverse go out starting well 10 and vertical jacking hole 20 interior two steel wires 11,21 in the tunnel apart from S '=715.79 m and position angle A '=77 ° 44 ' 08 ", obtain data as shown in table 2;
Table 2
6) the attitude of shield machine data before revise connecting according to calculating achievement: in the tunnel that inverse goes out in the distance in starting well that draws according to the actual cities coordinate Calculation in the definition step 3 and the vertical jacking hole between two steel wires and the step 5 in starting well and the vertical jacking hole ratio of the distance of two steel wires be R, R=S ÷ S '=0.999986; And the starting well that draws according to the actual cities coordinate Calculation in the position angle of two steel wires and the step 3 in starting well and the vertical jacking hole in the tunnel that inverse goes out in the step 5 and vertically in the jacking hole the azimuthal difference between two steel wires be △ A, △ A=A '-A=46 ° 56 ' 01 "; The position angle of measurement point in the tunnel lead 30,40,50,60 is deducted △ A, and according to carrying out distance correction, the distance and bearing angle between each measurement point of the lead that must make new advances between R each measurement point to the tunnel inside conductor; By calculating, again draw the increment of coordinate value and the coordinate of each measurement point of Construction control lead in the tunnel, as shown in table 3, draw shield attitude more accurately, remeasure shield attitude according to these data then, draw shield attitude more accurately, finally instruct shield machine accurately to arrive the received well or the predetermined area.
Table 3
In sum, the accurate holing-through survey method of speciality shield tunnel based on vertical jacking hole of the present invention, reach Construction control tracerse survey error in the accurate correction tunnel, accurately definite shield attitude is guaranteed the good result that the tunnel connects smoothly, and having overcome application high accuracy gyroscope instrument increase construction cost and achievement is not absolutely desirable shortcoming, thereby the present invention has efficient height, advantage effective and applied widely, can guarantee that ultra long haul shield method tunnel connects smoothly.
Claims (2)
1. a long-distance shield structure method tunnel holing through measuring method is characterized in that, may further comprise the steps:
1) vertical jacking hole construction;
2) hang the steel wire plumb bob: hang in a steel wire to tunnel bottom from ground by starting well and vertical jacking hole respectively, and insert in the oil drum of tunnel bottom sinking behind the colligation iron plumb bob until steadily;
3) measure actual range and true bearing angle between two steel wires: the actual cities coordinate of two steel wires in ground observation starting well and vertical jacking hole, and calculate two actual range and true bearing angles between the steel wire;
4) carrying out underground conducting wire measures: the Construction control lead is set in the tunnel, and on described lead, get a plurality of measurement points, with starting well and two steel wires in the vertical jacking hole is starting point and the terminal point of measuring lead, measures the position angle and the distance of each measurement point of whole tunnel internal Construction control lead;
5) measuring achievement calculates: the position angle of suppose the interior steel wire of starting well first measurement point of Construction control lead in the tunnel is 90 °, the position angle and the distance of each measurement point of the tunnel inside conductor that records according to step 4), calculate the city increment of coordinate of each measurement point of lead and vertical jacking hole place steel wire, inverse goes out in the tunnel distance and bearing angle of two steel wires in the starting well and vertical jacking hole;
6) the attitude of shield machine data before revise connecting according to calculating achievement: the difference value of measuring the distance and bearing angle between two steel wires that the ground actual measurement calculates in the calculating of achievement and the step 3) according to tunnel internal in the step 5), by calculating adjustment, the final optimization data of determining Construction control lead in the tunnel, remeasure shield attitude according to these data then, draw shield attitude more accurately, finally instruct shield machine accurately to arrive the received well or the predetermined area.
2. method according to claim 1 is characterized in that, described step 6 further may further comprise the steps:
In the tunnel that inverse goes out in distance in starting well that draws according to the actual cities coordinate Calculation in the definition step 3 and the vertical jacking hole between two steel wires and the step 5 in starting well and the vertical jacking hole ratio of the distance of two steel wires be R; And the starting well that draws according to the actual cities coordinate Calculation in the position angle of two steel wires and the step 3 in starting well and the vertical jacking hole in the tunnel that inverse goes out in the step 5 and vertically in the jacking hole the azimuthal difference between two steel wires be △ A;
The position angle of measurement point in the tunnel lead is deducted △ A, and according to carrying out distance correction, the distance and bearing angle between each measurement point of the lead that must make new advances between R each measurement point to the tunnel inside conductor;
By calculating, draw the increment of coordinate value and the coordinate of each measurement point of the Construction control lead tunnel in again, draw shield attitude more accurately, when making construction to vertical jacking hole, the coordinate of its cable wire is consistent with the ground actual measured value.
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| CN103196417A (en) * | 2013-03-18 | 2013-07-10 | 中国建筑土木建设有限公司 | Method for directionally measuring vertical well by double-connection triangle |
| CN103644900A (en) * | 2013-12-24 | 2014-03-19 | 中铁上海工程局有限公司 | Pipe jacking work well plane connection survey method |
| CN104567859A (en) * | 2014-12-30 | 2015-04-29 | 中铁上海工程局集团有限公司 | Shield segment posture calculation method |
| CN104655092A (en) * | 2013-11-25 | 2015-05-27 | 天津城建隧道股份有限公司 | Triangular single well directional measurement method used in subway shield construction |
| CN104674860A (en) * | 2015-02-16 | 2015-06-03 | 中交一航局第二工程有限公司 | Method for measuring lead penetration in subsea tunnel |
| CN110132211A (en) * | 2019-05-30 | 2019-08-16 | 中国水利水电科学研究院 | The interlayer spacings monitoring method and system of double linings |
| CN111006639A (en) * | 2019-12-16 | 2020-04-14 | 江苏苏州地质工程勘察院 | Interval tunnel penetration measurement method |
| CN111829492A (en) * | 2020-07-24 | 2020-10-27 | 中交第二航务工程局有限公司 | Laser plummet application-based contact measurement method |
| CN112065400A (en) * | 2020-08-14 | 2020-12-11 | 莱州汇金矿业投资有限公司 | Central line transfer device for shaft construction |
| CN113266368A (en) * | 2021-06-03 | 2021-08-17 | 上海市基础工程集团有限公司 | Detection method applied to ultra-long distance shield axis positioning |
| CN114295130A (en) * | 2021-12-27 | 2022-04-08 | 上海市机械施工集团有限公司 | Tunnel measurement method based on vertical jacking and gyro orientation |
| CN114485584A (en) * | 2021-12-30 | 2022-05-13 | 中铁第六勘察设计院集团有限公司 | Subway interval joint measurement method based on reverse joint measurement |
| 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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| CN103196417A (en) * | 2013-03-18 | 2013-07-10 | 中国建筑土木建设有限公司 | Method for directionally measuring vertical well by double-connection triangle |
| CN103196417B (en) * | 2013-03-18 | 2015-12-02 | 中国建筑土木建设有限公司 | Two connection triangle is adopted to carry out the method for shaft orientation survey |
| CN104655092A (en) * | 2013-11-25 | 2015-05-27 | 天津城建隧道股份有限公司 | Triangular single well directional measurement method used in subway shield construction |
| CN103644900A (en) * | 2013-12-24 | 2014-03-19 | 中铁上海工程局有限公司 | Pipe jacking work well plane connection survey method |
| CN103644900B (en) * | 2013-12-24 | 2016-05-18 | 中铁上海工程局集团有限公司 | A kind of upper pipe working well plane connection survey |
| CN104567859B (en) * | 2014-12-30 | 2017-10-27 | 中铁上海工程局集团有限公司 | A kind of computational methods of shield duct piece posture |
| CN104567859A (en) * | 2014-12-30 | 2015-04-29 | 中铁上海工程局集团有限公司 | Shield segment posture calculation method |
| CN104674860A (en) * | 2015-02-16 | 2015-06-03 | 中交一航局第二工程有限公司 | Method for measuring lead penetration in subsea tunnel |
| CN104674860B (en) * | 2015-02-16 | 2016-11-23 | 中交一航局第二工程有限公司 | Wire holing through survey method in seabed tunnel |
| CN110132211A (en) * | 2019-05-30 | 2019-08-16 | 中国水利水电科学研究院 | The interlayer spacings monitoring method and system of double linings |
| CN111006639A (en) * | 2019-12-16 | 2020-04-14 | 江苏苏州地质工程勘察院 | Interval tunnel penetration measurement method |
| CN111829492A (en) * | 2020-07-24 | 2020-10-27 | 中交第二航务工程局有限公司 | Laser plummet application-based contact measurement method |
| CN111829492B (en) * | 2020-07-24 | 2021-11-30 | 中交第二航务工程局有限公司 | Laser plummet application-based contact measurement method |
| CN112065400A (en) * | 2020-08-14 | 2020-12-11 | 莱州汇金矿业投资有限公司 | Central line transfer device for shaft construction |
| CN113266368A (en) * | 2021-06-03 | 2021-08-17 | 上海市基础工程集团有限公司 | Detection method applied to ultra-long distance shield axis positioning |
| CN114295130A (en) * | 2021-12-27 | 2022-04-08 | 上海市机械施工集团有限公司 | Tunnel measurement method based on vertical jacking and gyro orientation |
| CN114485584A (en) * | 2021-12-30 | 2022-05-13 | 中铁第六勘察设计院集团有限公司 | Subway interval joint measurement method based on reverse joint measurement |
| CN114485584B (en) * | 2021-12-30 | 2023-05-05 | 中铁第六勘察设计院集团有限公司 | Subway interval joint measurement method based on reverse connection measurement |
| 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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