CN114413870A - Tunnel multi-line lead penetration measuring method - Google Patents
Tunnel multi-line lead penetration measuring method Download PDFInfo
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- CN114413870A CN114413870A CN202210308581.XA CN202210308581A CN114413870A CN 114413870 A CN114413870 A CN 114413870A CN 202210308581 A CN202210308581 A CN 202210308581A CN 114413870 A CN114413870 A CN 114413870A
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Abstract
The invention belongs to the technical field of immersed tube tunnel engineering measurement, and particularly relates to a tunnel multi-line-shaped wire through measurement method. The measuring method comprises the steps of multi-line-shaped combined network locking layout and multi-line-shaped lead combined observation; the step of laying the multi-thread-shaped combined lock net comprises the steps of laying an out-of-hole control net, two in-hole full-conductor nets and a middle corridor full-conductor net, and mutually connecting all the net shapes to form the multi-thread-shaped combined lock net; the step of the multi-wire lead combined observation comprises the steps of measuring and resolving GNSS coordinates of two out-of-hole starting points, and sequentially erecting the total station at the out-of-hole starting points, the in-hole control points and the corridor control points to carry out tunnel through measurement. The invention fully utilizes the tunnel structure, increases redundant observation number and checking conditions by synchronously laying the through measurement lead wires and connecting the measurement through the middle gallery and the left and right lanes, improves the through measurement precision of the tunnel, and enhances the reliability and stability of the measurement result.
Description
Technical Field
The invention belongs to the technical field of immersed tube tunnel engineering measurement, and particularly relates to a tunnel multi-line-shaped wire through measurement method.
Background
The requirement on the penetration precision of the immersed tunnel design is high, and the penetration measurement wire network design is the core technology of tunnel penetration measurement. The immersed tunnel structure generally comprises a left lane, a right lane and a middle corridor required by maintenance, and the conventional immersed tunnel is provided with a through measurement wire network in the left lane and the right lane; however, for the through measurement of the extra-long immersed tube tunnel, the through measurement wire nets are only arranged on the left and right lanes, and the accuracy and reliability risk of the through measurement is high.
Disclosure of Invention
Aiming at the defects in the related art, the invention provides a tunnel multi-line-shaped wire through measurement method which is used for improving the through measurement precision of a tunnel and enhancing the reliability and stability of the measurement result.
The invention relates to a tunnel multi-line lead penetration measuring method, which comprises the steps of multi-line joint network locking layout and multi-line lead joint observation, wherein,
the step of laying the multi-wire combined lock net further comprises the following steps:
laying a left hole outer starting point corresponding to a left lane, a right hole outer starting point corresponding to a right lane and a plurality of hole outer control points outside a tunnel entrance to form a hole outer control network;
uniformly laying a plurality of in-hole control points in a left lane and a right lane to form two sets of in-hole full wire nets respectively positioned in the left lane and the right lane;
reserving a through wire measuring channel in the middle gallery, and laying a plurality of middle gallery control points to form a middle gallery full wire net;
the outer control net, the middle gallery full wire net and the two sets of inner full wire nets are mutually linked to form a multi-wire combined lock net;
the step of multi-wire lead joint observation further comprises:
synchronously erecting GNSS receivers at the left hole outer starting point, the right hole outer starting point and a plurality of hole outer control points to perform static measurement so as to solve GNSS coordinates of the left hole outer starting point and the right hole outer starting point;
and erecting total stations in sequence at the left out-of-tunnel starting point, the right out-of-tunnel starting point, the plurality of in-tunnel control points and the plurality of middle corridor control points, and carrying out tunnel through measurement by means of multi-line-shaped combined locking nets.
According to the technical scheme, the tunnel structure is fully utilized, the redundant observation number and the checking condition are increased by synchronously arranging the through measurement lead wires with the left lane and the right lane and connecting the measurement, the through measurement precision of the tunnel is improved, and the reliability and the stability of the measurement result are enhanced.
In some embodiments, the plurality of in-hole control points of the in-hole full wire mesh are arranged as a plurality of pairs of in-hole control point groups arranged along the length direction of the tunnel and a tunnel outlet control point; each pair of in-tunnel control point groups comprises two in-tunnel control points which are symmetrically arranged left and right relative to the center line of the lane, and the exit control point is positioned on the exit side of the tunnel.
In some of these embodiments, the plurality of intermediate gallery control points are arranged as an intermediate gallery entrance control point, a plurality of pairs of gallery control point sets, and an intermediate gallery exit control point arranged along the length of the tunnel; each centering gallery control point group comprises two middle gallery control points which are symmetrically arranged in the left and right directions of the center line of the centering gallery, the middle gallery inlet control point is positioned on the tunnel inlet side, and the middle gallery outlet control point is positioned on the tunnel outlet side.
In some embodiments, the in-tunnel control point group and the middle corridor entrance control point on the tunnel entrance side correspond to the same mileage position of the tunnel, the other in-tunnel control point groups and the middle corridor control point groups correspond to the same mileage position of the tunnel one by one, and the exit control point corresponds to the same mileage position of the tunnel as the middle corridor exit control point.
In some embodiments, the left out-of-hole starting point, the right out-of-hole starting point, the out-of-hole control point, the in-hole control point and the middle gallery control point are all wire measuring points in the multi-wire combined lock net; the tunnel penetration measurement further comprises the following steps:
a corner measuring step: erecting a total station at an initial point outside the left hole, and performing corner measurement on each wire measuring point connected with the initial point outside the left hole; erecting a total station at an initial point outside the right hole, and performing corner measurement on each wire measuring point connected with the initial point outside the right hole; erecting total stations at a plurality of in-hole control points and a plurality of middle gallery control points in sequence, carrying out corner measurement on each wire measuring point connected with the point where the total stations are located, and carrying out transfer measurement to a hole outlet control point and a middle gallery outlet control point in sequence;
a calculation step: according to the measurement result obtained in the corner measurement step, combining GNSS coordinates of the starting point outside the left hole and the starting point outside the right hole, and performing overall adjustment calculation to obtain a GNSS coordinate result of each wire measurement point in the multi-wire combined lock network;
checking: erecting a total station at the middle corridor exit control point, looking back to one middle corridor control point in a middle corridor control point group close to the middle corridor exit control point, and checking the other middle corridor control point in the middle corridor control point group.
In some embodiments, in the corner measurement step, the total station performs the corner measurement on the lead measurement points in a clockwise or counterclockwise order.
Based on the technical scheme, the tunnel multi-linear-wire through measurement method in the embodiment of the invention increases the redundant observation number and the checking condition by synchronously laying through measurement wires with the middle gallery and the left and right lanes and connecting the measurement, forms a stronger net-shaped graph structure, improves the through measurement precision of the tunnel, enhances the reliability and the stability of a measurement result, meets the increasingly improved through design precision requirement of the immersed tube tunnel and the through measurement precision requirement of the extra-long tunnel, and realizes the accurate through measurement of the tunnel, thereby ensuring the tunnel construction measurement precision and the accurate through between all excavation surfaces of the tunnel.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a diagram of a multi-wire interlocking net layout according to the present invention;
FIG. 2 is a flow chart of the multi-filar wire joint observation of the present invention.
In the figure:
1. a left lane; 2. a right lane; 3. a middle gallery;
D1/D2/D3, an out-of-hole control point; LX1, starting point outside the left hole; RX1, right hole outer starting point;
L1/L2/L3/L4/L5/L6/L7/L8/L9/L10 and a left in-hole control point;
R1/R2/R3/R4/R5/R6/R7/R8/R9/R10 and a right hole inner control point;
z0, middle corridor entrance control point; Z1/Z2/Z3/Z4/Z5/Z6/Z7/Z8, middle corridor control point;
ML, left exit control point; MR, right exit control point; MZ, middle gallery exit control point.
Detailed Description
The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "lateral," "longitudinal," "upper," "lower," "top," "bottom," "inner," "outer," "left," "right," "front," "rear," "vertical," "horizontal," and the like are used in the orientation or positional relationship indicated in FIG. 1, which is based on the orientation or positional relationship shown in FIG. 1, and is used merely for convenience in describing and simplifying the invention, and does not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the invention.
The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Based on the increasing requirements on the penetration design precision of the immersed tunnel and the penetration measurement precision of the extra-long tunnel, the invention ensures that the tunnel has the conditions of synchronously laying a penetration measurement wire net and performing connection measurement on the middle gallery and the left and right lanes by linking with the design at the beginning of the immersed tunnel design and reserving a penetration wire measurement channel in the gallery at the tunnel entrance during the tunnel penetration construction, so as to improve the penetration measurement precision, the penetration measurement reliability and the observation data stability.
As shown in fig. 1 and fig. 2, the method for measuring the penetration of the multi-wire-shaped wire in the tunnel comprises the steps of laying a multi-wire-shaped combined lock network and performing combined observation on the multi-wire-shaped wire; it can be understood that the invention depends on the multi-line-shaped combined lock network to carry out multi-line-shaped lead combined observation, thereby realizing the through measurement of the tunnel.
The step of laying the multi-wire combined lock net further comprises the following steps:
1) and arranging a left out-of-tunnel starting point LX1 corresponding to the left lane 1, a right out-of-tunnel starting point RX1 corresponding to the right lane 2 and a plurality of out-of-tunnel control points outside the tunnel entrance to form an out-of-tunnel control network.
It should be noted that the number of the out-of-hole control points includes, but is not limited to, three, such as the out-of-hole control points D1, D2, and D3 shown in fig. 1, and the out-of-hole control points D1, D2, and D3 are located at different positions outside the left out-of-hole starting point LX1 and the right out-of-hole starting point RX1, so as to enhance the graphic structure of the out-of-hole control mesh.
2) In the left lane 1 and the right lane 2, a plurality of in-hole control points are uniformly distributed to form two sets of in-hole full wire nets respectively positioned in the left lane 1 and the right lane 2, namely the net shapes of the in-hole full wire nets in the left lane 1 and the right lane 2 are consistent.
3) And a through wire measuring channel is reserved in the middle gallery 3, and a plurality of middle gallery control points are distributed to form a middle gallery full wire net.
4) The method comprises the following steps of (1) mutually connecting an out-of-hole control net, a middle gallery full wire net and two sets of in-hole full wire nets to form a multi-wire combined lock net; therefore, the multi-line combined lock net is in a mode that the middle gallery and the left and right lanes are synchronously provided with the through measuring leads and are mutually connected, the redundant observation number and the checking condition are increased, and a strong net-shaped graph structure is formed.
The multi-line conductor joint observation specifically comprises the following steps:
1) synchronously erecting GNSS receivers at the left hole outer starting point LX1, the right hole outer starting point RX1 and a plurality of hole outer control points for static measurement, and recovering the GNSS receivers after the static measurement is finished; and calculating GNSS coordinates of the starting point outside the left hole and the starting point outside the right hole according to the result of the static measurement.
It can be understood that the left out-of-hole starting point LX1 and the right out-of-hole starting point RX1 are nodes of the out-of-hole control network, i.e., projection points, and provide calculation data for the middle corridor full wire network and the two sets of in-hole full wire networks.
2) And erecting total stations in sequence at the left out-of-tunnel starting point LX1, the right out-of-tunnel starting point RX1, a plurality of in-tunnel control points and a plurality of middle corridor control points, and carrying out tunnel penetration measurement by means of multi-linear combined network locking.
According to the illustrative embodiment, the tunnel structure is fully utilized, and the redundant observation number and the checking condition are increased by synchronously arranging the through measurement conducting wires with the left lane and the right lane and connecting the measurement, so that the through measurement precision of the tunnel is improved, and the reliability and the stability of the measurement result are enhanced.
As shown in fig. 1, in some embodiments, the plurality of in-tunnel control points of the in-tunnel full-wire net in the left lane 1 are arranged from the tunnel entrance side, and five pairs of left in-tunnel control point groups and one left exit control point ML are arranged along the length direction of the tunnel; the five pairs of left in-hole control point groups are respectively L1/L2, L3/L4, L5/L6, L7/L8 and L9/L10, wherein each pair of left in-hole control point groups comprises two left in-hole control points, such as L1 and L2, and the two left in-hole control point groups are symmetrically arranged left and right relative to the center line of the left lane 1; and the left exit control point ML is positioned at the tunnel exit side corresponding to the left lane 1. Similarly, a plurality of in-hole control points of the in-hole full wire net in the right lane 2 are arranged from the tunnel entrance side, and five pairs of right in-hole control point groups and a right exit control point MR are arranged along the length direction of the tunnel; the five pairs of right in-hole control point groups are respectively R1/R2, R3/R4, R5/R6, R7/R8 and R9/R10, wherein each pair of right in-hole control point groups comprises two right in-hole control points, such as R1 and R2, and the two right in-hole control points are symmetrically arranged left and right relative to the center line of the right lane 2; and the right exit control point MR is positioned at the tunnel exit side corresponding to the right lane 2. It is understood that the number of left in-hole control point groups and left in-hole control point groups includes, but is not limited to, five pairs.
Furthermore, all the wire nets in the holes in the left lane 1 and the right lane 2 are connected in a side mode, and are more in overlapped quadrangle and stronger in graphic structure, so that the through measurement of the tunnel is facilitated; in addition, the left hole inner control point group and the left hole outlet control point ML in the left lane 1 and the right hole inner control point group and the right hole outlet control point MR in the right lane 2 correspond to the same mileage position of the tunnel one by one.
The illustrative embodiment realizes the regular arrangement of the full wire nets in the two sets of holes in the left lane 1 and the right lane 2.
As shown in fig. 1, in some embodiments, a plurality of middle gallery control points of the middle gallery full-wire mesh are arranged from the tunnel entrance side, and a middle gallery entrance control point Z0, four pairs of sets of gallery control points, and a middle gallery exit control point MZ are arranged along the length direction of the tunnel. The four pairs of corridor control point groups are respectively Z1/Z2, Z3/Z4, Z5/Z6 and Z7/Z8, wherein each pair of corridor control point groups comprises two corridor control points, such as Z1 and Z2, which are symmetrically arranged left and right relative to the center line of the corridor 3; the middle gallery entrance control point Z0 is located on the tunnel entrance side, and the middle gallery exit control point MZ is located on the tunnel exit side. It is understood that the number of sets of corridor control points includes, but is not limited to, four pairs. Furthermore, all the wire nets of the middle gallery in the middle gallery 3 are connected in a side mode, more quadrangles are overlapped, the graph structure is strong, and the tunnel through measurement is facilitated. The illustrative embodiment realizes the layout of the whole wire mesh of the middle gallery in the middle gallery 3.
As shown in fig. 1, in some embodiments, the set of in-hole control points located on the tunnel entrance side, i.e., in-hole control points L1, L2, R2, R1, correspond to the same mileage positions of the tunnel as middle corridor entrance control point Z0. The other in-hole control point groups and the middle corridor control point group correspond to the same mileage positions of the tunnel one by one, for example, L3, L4, Z2, Z1, R4 and R3 correspond to the same mileage positions of the tunnel. The exit control points ML and MR have the same mileage position with the tunnel corresponding to the middle corridor exit control point MZ. The illustrative embodiment realizes the mutual connection between the full wire net of the middle gallery and the full wire net in the two sets of holes, and the net-shaped structure of the multi-wire combined lock net is more regular.
As shown in fig. 1 and 2, in some embodiments, the left out-of-hole starting point LX1, the right out-of-hole starting point RX1, the out-of-hole control points, the in-hole control points, and the middle corridor control points are all wire measurement points in the multi-wire mesh. The tunnel penetration measurement in the multi-linear wire joint observation step further comprises the following steps:
1) a corner measuring step:
erecting a total station at the position of the starting point LX1 outside the left hole, and performing corner measurement on each wire measuring point connected with the starting point LX1 outside the left hole;
erecting a total station at the position of the right hole outer starting point RX1, and performing corner measurement on each lead measuring point connected with the right hole outer starting point RX 1;
erecting total stations at a plurality of in-hole control points and a plurality of middle gallery control points in sequence, carrying out corner measurement on each wire measuring point connected with the point where the total stations are located, and carrying out transfer measurement to a left exit control point ML, a right exit control point MR and a middle gallery exit control point MZ in sequence;
2) a calculation step:
according to the measurement result obtained in the corner measurement step, the GNSS coordinates of the outer starting point LX1 of the left hole and the outer starting point RX1 of the right hole are combined to perform integral adjustment calculation so as to obtain the GNSS coordinate result of each wire measurement point in the multi-wire combined network;
3) checking:
and erecting a total station at the middle gallery outlet control point MZ, looking back at one middle gallery control point in a middle gallery control point group close to the middle gallery outlet control point MZ, checking the other middle gallery control point in the middle gallery control point group, preventing gross errors, ensuring the rigor and accuracy of the through measurement work, and further completing the through measurement work of the tunnel.
It is understood that, in the tunnel through survey, an operation method of erecting a total station, a prism, etc., a method of measuring a corner, a GNSS coordinate calculation of a wire measuring point, etc. are well known to those skilled in the art, and will not be expanded and described herein.
In some embodiments, in the corner measuring step, the total station performs the corner measurement on the lead measuring points in a clockwise or counterclockwise order, so as to improve the measuring efficiency.
The main working process of the tunnel multiline wire penetration measuring method of the present invention is described below with reference to fig. 1-2:
1) arranging a left hole outer starting point LX1 corresponding to the left lane 1, a right hole outer starting point RX1 corresponding to the right lane 2 and three hole outer control points outside the tunnel entrance to form a hole outer control network; the full wire nets in the holes are respectively distributed in the left lane 1 and the right lane 2, the full wire nets of the middle gallery are distributed in the middle gallery 3, and all net shapes are mutually connected to form a multi-line combined net locking;
2) synchronously erecting GNSS receivers at LX1, RX1, D1, D2 and D3 for static measurement to solve the GNSS coordinates of LX1 and RX 1;
3) erecting a total station at RX1 point, and carrying out corner measurement on points D1, LX1, D2, D3, R1, R2 and Z0 in a clockwise or anticlockwise order;
erecting a total station at an LX1 point, and carrying out corner measurement on points D1, D2, RX1, D3, Z0, L2 and L1 in a clockwise or anticlockwise order;
erecting a total station at a point R1, and carrying out corner measurement on RX1, R3, R4, R2, Z0, L2 and L1 in a clockwise or anticlockwise order;
erecting a total station at a point R2, and carrying out corner measurement on RX1, R1, R3, R4, Z0, L2 and L1 in a clockwise or anticlockwise order;
erecting a total station at a Z0 point, and carrying out corner measurement on LX1, RX1, R2, R1, Z1, Z2, L2 and L1 points in a clockwise or anticlockwise order;
erecting a total station at a point L2, and carrying out corner measurement on points LX1, Z0, R2, R1, L4, L3 and L1 in a clockwise or anticlockwise order;
erecting a total station at a point L1, and carrying out corner measurement on points LX1, L2, Z0, R2, R1, L4 and L3 in a clockwise or anticlockwise order;
erecting a total station at a point R3, and carrying out corner measurement on points R2, R1, R5, R6, R4, Z1, Z2, L4 and L3 in a clockwise or anticlockwise order;
erecting a total station at a point R4, and carrying out corner measurement on points R2, R1, R3, R5, R6, Z1, Z2, L4 and L3 in a clockwise or anticlockwise order;
erecting a total station at a Z1 point, and carrying out corner measurement on Z0, R4, R3, Z3, Z4, Z2, L4 and L3 points in a clockwise or anticlockwise sequence;
erecting a total station at a Z2 point, and carrying out corner measurement on Z0, Z1, R4, R3, Z3, Z4, L4 and L3 points in a clockwise or anticlockwise order;
erecting a total station at a point L4, and carrying out corner measurement on points L1, L2, Z2, Z1, R4, R3, L6, L5 and L3 in a clockwise or anticlockwise order;
erecting a total station at a point L3, and carrying out corner measurement on points L1, L2, L4, Z2, Z1, R4, R3, L6 and L5 in a clockwise or anticlockwise order;
according to the measuring process, sequentially carrying out station transfer measurement to an ML point, an MR point and an MZ point; it will be appreciated that the location of the start point is not limited for each corner measurement;
4) according to the measurement result obtained in the corner measurement step, the GNSS coordinates of the outer starting point LX1 of the left hole and the outer starting point RX1 of the right hole are combined to perform integral adjustment calculation so as to obtain the GNSS coordinate result of each wire measurement point in the multi-wire combined network;
5) erecting a total station at an MZ point, looking back at a point Z8, and checking a point Z7; or a rear view Z7 point, and a check Z8 point; and further completing the tunnel through measurement work.
In conclusion, the tunnel multi-line-shaped lead through measurement method provided by the invention fully utilizes the tunnel structure, increases the redundant observation number and check conditions by synchronously laying through measurement leads with the middle gallery and the left and right lanes and connecting the measurement, forms a stronger net-shaped graph structure, improves the through measurement precision of the tunnel, enhances the reliability and stability of the measurement result, meets the increasingly improved through design precision requirement of the immersed tube tunnel and the through measurement precision requirement of the extra-long tunnel, realizes the accurate through measurement of the tunnel, ensures the tunnel construction measurement precision, ensures the accurate through between all the excavation surfaces of the tunnel, and has higher popularization value and good application prospect.
Finally, it should be noted that: the embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (6)
1. The tunnel multi-linear lead penetration measuring method is characterized by comprising the steps of multi-linear joint network locking layout and multi-linear lead joint observation, wherein,
the step of laying the multi-linear combined lock net further comprises the following steps:
laying a left hole outer starting point corresponding to a left lane, a right hole outer starting point corresponding to a right lane and a plurality of hole outer control points outside a tunnel entrance to form a hole outer control network;
uniformly laying a plurality of in-hole control points in the left lane and the right lane to form two sets of in-hole full wire nets respectively positioned in the left lane and the right lane;
reserving a through wire measuring channel in the middle gallery, and laying a plurality of middle gallery control points to form a middle gallery full wire net;
the control net outside the tunnel, the middle gallery full wire net and the two sets of in-tunnel full wire nets are mutually linked to form a multi-thread combined lock net;
the step of multi-filar wire joint observation further comprises:
synchronously erecting GNSS receivers at the left hole outer starting point, the right hole outer starting point and a plurality of hole outer control points for static measurement so as to solve GNSS coordinates of the left hole outer starting point and the right hole outer starting point;
and erecting total stations in sequence at the left hole outer starting point, the right hole outer starting point, the plurality of hole inner control points and the plurality of middle corridor control points, and carrying out tunnel through measurement by relying on the multi-linear combined lock network.
2. The tunnel multiline wire penetration measuring method according to claim 1, wherein the plurality of in-hole control points of the in-hole full wire mesh are arranged as a plurality of pairs of in-hole control point groups arranged along the length direction of the tunnel and a tunnel exit control point; each pair of in-hole control point groups comprises two in-hole control points which are symmetrically arranged left and right relative to the center line of the lane, and the hole outlet control points are positioned on the hole outlet side of the tunnel.
3. The method of claim 2, wherein the plurality of middle gallery control points are arranged as a middle gallery entrance control point, a plurality of pairs of gallery control point sets, and a middle gallery exit control point arranged along the length direction of the tunnel; every pair of well corridor control point group is including two well corridor control points that relative centering corridor central line bilateral symmetry laid, well corridor import control point is located tunnel entrance side, well corridor export control point is located tunnel exit side.
4. The method for measuring the penetration of the multi-wire lead in the tunnel according to claim 3, wherein the group of the control points in the tunnel located at the entrance side of the tunnel and the group of the control points in the middle gallery correspond to the same mileage position of the tunnel, the group of the control points in other tunnels and the group of the control points in the middle gallery correspond to the same mileage position of the tunnel, and the group of the control points in the exit side of the tunnel and the group of the control points in the middle gallery correspond to the same mileage position of the tunnel.
5. The method according to claim 4, wherein the left out-of-hole starting point, the right out-of-hole starting point, the out-of-hole control point, the in-hole control point, and the middle gallery control point are all wire measuring points in the multi-wire combined lock net; the tunnel penetration measurement further comprises the following steps:
a corner measuring step: erecting a total station at the starting point outside the left hole, and performing corner measurement on each wire measuring point connected with the starting point outside the left hole; erecting a total station at the starting point outside the right hole, and performing corner measurement on each wire measuring point connected with the starting point outside the right hole; erecting total stations at the plurality of in-hole control points and the plurality of middle gallery control points in sequence, carrying out corner measurement on each lead measuring point connected with the point where the total stations are located, and moving the stations in sequence to measure to the hole outlet control point and the middle gallery outlet control point;
a calculation step: according to the measurement result obtained in the corner measurement step, combining GNSS coordinates of the starting point outside the left hole and the starting point outside the right hole, and performing overall adjustment calculation to obtain a GNSS coordinate result of each wire measurement point in the multi-linear combined lock network;
checking: erecting a total station at the middle corridor exit control point, and checking another middle corridor control point in a middle corridor control point group close to the middle corridor exit control point in the back view.
6. The tunneling multiline wire pass-through surveying method of claim 5, wherein in the corner surveying step, the total station makes corner surveys of the wire measuring points in a clockwise or counterclockwise order.
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| CN202210308581.XA CN114413870B (en) | 2022-03-28 | 2022-03-28 | Tunnel multi-line lead penetration measuring method |
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