Method for measuring special-shaped crossed traverse of tunnel

Abstract

The invention relates to a tunnel special-shaped crossed traverse measurement method, which relates to the field of tunnel construction, and comprises the following steps: S1, in a tunnel clearance area, multiple pairs of measurement points are sequentially arranged along the depth direction of a tunnel, and the multiple pairs of measurement points are sequentially distributed on the L side and the R side of the tunnel in a staggered manner; the measuring point positions comprise two single measuring points which are arranged in sequence; s3, additionally measuring the distance between short sides P and P: in three adjacent pairs of measurement points, respectively taking P and P as base points, and measuring first angle observation values and first side length observation values of P (-), P (-), P (+) and P (+); and S4, calculating a second angle observation value and a second side length observation value between the two single measurement points in each pair of measurement points according to the angle observation values and the side length observation values of the two single measurement points in each pair of measurement points in the step S3. The method has the effect of improving the measurement precision.

Description

Technical Field

[0001] This application relates to the field of tunnel construction, and in particular to a method for measuring irregularly shaped cross traverses in tunnels. Background Technology

[0002] To increase the graphic strength of the traverse network inside extra-long tunnels and improve the accuracy of traverse measurements, traverse networks inside extra-long tunnels are usually arranged using intersecting traverse networks. Because the lateral sides between points in an intersecting traverse network are extremely short, generally only about 10 meters, the angle measurement accuracy is extremely low, and observations are generally not performed. Only the angles and distances of the long sides of adjacent stations that are line-of-sight with the stations are observed. Figure 1 As shown, at station C, the direction values ​​and distances of CE, CF, CB, and CA should be observed, but CD should not be observed.

[0003] Due to the limited space inside the tunnel, when measuring the horizontal angle of the traverse, the line of sight of the traverse laid near the tunnel sidewall is relatively close to the sidewall, as shown in CA, CE, DB, and DF in the figure. Because the air density is uneven near the sidewall, the line of sight forms a curve after continuous refraction and bends towards the side with higher density. As a result, a small angle will be generated between the actual aiming direction and the theoretical aiming direction. The horizontal component of this angle is called lateral refraction. Lateral refraction has a systematic error effect on the results of precise angle measurement.

[0004] Because lateral refraction exhibits systematic errors that are difficult to reduce or eliminate by increasing the number of measurements, when lateral refraction reaches a certain significant level, it can cause substantial observation errors in the measurement of the horizontal angle of the traverse. Figure 1 The measurement accuracy of ∠ECA and ∠BDF in the tunnel was insufficient, resulting in excessive closure error of the traverse loop angle and unqualified measurement results. In addition, due to the complex construction environment inside the tunnel, ventilation and water pipes laid near the side walls, temporarily piled materials, temporarily parked construction machinery, and secondary lining formwork trolleys all have a significant lateral refraction effect on the observation line of sight. Therefore, how to improve the measurement accuracy is an urgent problem to be solved. Summary of the Invention

[0005] To improve measurement accuracy, this application provides a method for measuring irregularly shaped cross traverses in tunnels.

[0006] The technical solution for measuring irregularly shaped cross traverses in tunnels provided in this application is as follows: A method for measuring irregularly shaped cross traverses in tunnels includes the following steps: S1: In the tunnel clearance area, multiple pairs of measurement points are sequentially arranged along the tunnel depth direction. The multiple pairs of measurement points are staggered on the L side and R side of the tunnel, so that in two adjacent pairs of measurement points, one pair of the measurement points is provided on the L side and the R side respectively. The measurement points include two single measurement points arranged in sequence along the tunnel depth direction, and the single measurement point far from the tunnel face is P1i, and the single measurement point close to the tunnel face is P2i. S2: measuring the point data of each single measurement point in the double wires, and the double wires are wire 1 and wire 2 respectively: Wire 1 has a plurality of single measurement points P1i, wherein i=1, 2,..., n; Wire 2 has a plurality of single measurement points P2i, wherein i=1, 2,..., n; S3: adding the distance between P1i and P2i: In the adjacent three pairs of measurement points, P1(ᵢ-1), P2(ᵢ-1) and P1(ᵢ+1), P2(ᵢ+1) are measured as the first angle observation value and the second side length observation value with P1i and P2i as the base point respectively. S4: according to the angle observation value and the side length observation value of the two single measurement points in each pair of measurement points in S3, the second angle observation value and the second side length observation value between the two single measurement points in the pair of measurement points are calculated. S4: repeating S2-S3 until the second angle observation value and the second side length observation value between the two single measurement points in each pair are measured.

[0007] By adopting the above technical scheme, the influence of side light on the measurement result is avoided, the accuracy of the measurement result is improved, and the stability of the measurement network is ensured.

[0008] Optionally, in S2, the measuring device is installed on the supporting device, and the angle or distance is measured by the measuring device, the measuring device is a prism and a total station, one of the two measurement points is placed with the total station, and the other measurement point is placed with the prism; The supporting device includes a main supporting assembly, and the main supporting assembly includes a top supporting piece and a bottom supporting piece, the top supporting piece is rotationally connected to the bottom supporting piece, and the top supporting piece is parallel to the first direction along the rotation axis of the bottom supporting piece. The measuring device is installed on the top supporting piece.

[0009] By adopting the above technical scheme, during measurement, since multiple measurement points need to be measured at the same position, the top supporting piece can be rotated to drive the measuring device to rotate, which can realize the adjustment of the angle measured by the measuring device, without the need for personnel to reinstall the measuring device, thereby reducing the measurement deviation caused by multiple installations of the measuring device.

[0010] Optionally, the support device further comprises a driving assembly, the driving assembly comprising a first linear driving member, the first linear driving member having a guide portion and a sliding driving portion, the sliding driving portion of the first linear driving member being capable of sliding along the guide portion of the first linear driving member in a second direction, the bottom support member being connected to the sliding driving portion of the first linear driving member, the first linear driving member being used to drive the bottom support member to slide in the second direction.

[0011] By using the above technical scheme, when the measuring device needs to be moved between two measuring points, the first linear driving member is used to drive the measuring device to move, so that the position of the measuring device can be changed; and the first linear driving member is used to realize the linear movement of the measuring device.

[0012] Optionally, the driving assembly further comprises a second linear driving member, the second linear driving member having a sliding driving portion and a guide portion, the sliding driving portion of the second linear driving member being capable of sliding along the guide portion of the second linear driving member in a third direction; the first linear driving member being connected to the sliding driving portion of the second linear driving member, the second linear driving member being used to drive the first linear driving member to slide in the third direction.

[0013] By using the above technical scheme, since the second direction and the third direction are perpendicular to each other, when the second direction and the third direction are both horizontal directions, the first linear driving member and the second linear driving member form a cross slide structure similar to the horizontal direction, and through the driving action of the first linear driving member and the second linear driving member, the sliding of the measuring device in any position in the horizontal direction can be realized.

[0014] Optionally, the support device further comprises a support frame body, the guide portion of the second linear driving member being fixedly connected to the support frame body, and the guide portion of the first linear driving member being slidingly connected to the support frame body in the third direction.

[0015] By using the above technical scheme, by providing the support frame body and connecting the driving assembly to the support frame body, the mounting point of the driving assembly can be provided.

[0016] Optionally, the support device further comprises an auxiliary support assembly, a plurality of auxiliary support assemblies being connected to the support frame body, the auxiliary support assembly comprising a connecting plate, a third linear driving member, a first motor and a drill bit. The connecting plate is connected to the support frame body, the third linear driving member is fixedly connected to the connecting plate, and the driving direction of the third linear driving member is parallel to the first direction. The first motor is connected to the third linear driving member, and the third linear driving member is used to drive the first motor to move in the first direction. The drill bit is located on the side of the support frame body away from the measuring device, and the drill bit is connected to the output shaft of the first motor to drive the drill bit to rotate by the first motor, and the rotation axis of the drill bit is parallel to the first direction.

[0017] By adopting the above technical scheme, when it is necessary to fix the support device, the drill bit is driven to rotate by the first motor, and in the process of rotation, the third linear driving member drives the motor and the drill bit to move in the first direction, so that the drill bit can slide in the first direction while rotating, and the drill bit can be drilled into the ground.

[0018] Optionally, the auxiliary support assembly further comprises a second motor connected between the connecting plate and the support frame body, for driving the connecting plate to rotate along the support frame body, and the rotation axis of the connecting plate along the support frame body is parallel to the first direction. The drill bit is located on the side of the connecting plate along the rotation axis of the support frame body.

[0019] By adopting the above technical scheme, when the ground is not flat enough, one of the second motors is started to drive the connecting plate to rotate along the support frame body, and in the process of rotation of the drill bit with the connecting plate, the position of the drill bit can be changed.

[0020] Optionally, the auxiliary support assembly further comprises a caster connected to the connecting plate, and the caster is located on the same side of the connecting plate as the drill bit.

[0021] By adopting the above technical scheme, when it is necessary to move the entire support device, the drill bit is driven upward to separate from the ground by the third linear driving member, and then, under the support of the caster, the support device can be moved more smoothly by the person.

[0022] In summary, the present application has the following at least one beneficial technical effect: 1. The influence of side refraction on data measurement can be eliminated to improve the accuracy of data measurement. 2. It is convenient to measure data of other multiple measuring points at the same measuring point. BRIEF DESCRIPTION OF DRAWINGS Figure 1 is a measurement path schematic diagram of a measurement method in the related art of the present application; Figure 2 is a measurement path schematic diagram of a measurement method in the embodiment of the present application; Figure 3 is a structural schematic diagram of a main support assembly in the embodiment of the present application; Figure 4is a structural schematic diagram of a driving assembly in an embodiment of the present application; Figure 5 is a structural schematic diagram of two driving assemblies connected in an embodiment of the present application; Figure 6 is a structural schematic diagram of a driving assembly mounted on a support frame in an embodiment of the present application; Figure 7 is a structural schematic diagram of an auxiliary support assembly mounted on a support leg in an embodiment of the present application; Figure 8 is a structural schematic diagram of an auxiliary support assembly in an embodiment of the present application.

[0023] Legend: 01, measuring device; 1, main support assembly; 11, top support; 12, bottom support; 2, driving assembly; 21, first linear driving member; 22, second linear driving member; 23, guide portion; 24, sliding driving portion; 3, support frame; 31, first guide rod; 32, second guide rod; 33, sliding sleeve; 34, support leg; 4, auxiliary support assembly; 41, connecting plate; 42, third linear driving member; 43, first motor; 44, drill bit; 45, second motor; 46, first support rod; 47, caster. DETAILED DESCRIPTION

[0024] The following will be described in detail in combination with the accompanying Figures 2-8 The present application will be described in further detail. In order to facilitate the description, the present application introduces directional words such as first direction, second direction and third direction to form three-dimensional reference directions, and the directional words used such as “first direction, second direction and third direction” can be specifically referred to the drawings shown, wherein X represents the first direction X, Y represents the second direction Y, and Z represents the third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0025] The embodiment of the present application discloses a tunnel special-shaped cross conductor measuring method. Referring to Figure 1 , the tunnel special-shaped cross conductor measuring method comprises the following steps: S1: In the tunnel clearance area, a plurality of pairs of measuring points are sequentially arranged along the tunnel depth direction, and the plurality of pairs of measuring points are sequentially staggered on the L side and the R side of the tunnel, so that each pair of measuring points on the L side and the R side in the adjacent two pairs of measuring points is provided with a pair of measuring points; Each pair of measuring points comprises two single measuring points sequentially arranged along the tunnel depth direction, and in the two single measuring points, the single measuring point far from the tunnel face is P1ᵢ, and the single measuring point close to the tunnel face is P2ᵢ; S2: measuring the point data of each single measuring point in the double conductor, and the double conductor is conductor 1 and conductor 2 respectively: Traverse 1 has multiple individual measurement points P1ᵢ, where i = 1, 2, ..., n; that is, the individual measurement points on traverse 1 are: P 11 P 12 ,...,P1n; Traverse 2 has multiple individual measurement points P2ᵢ, where i = 1, 2, ..., n; that is, the individual measurement points on traverse 2 are: P 21 P 22 ,...,P2n; Where the coordinates of P1ᵢ and P2ᵢ are: P1ᵢ(x1ᵢ, y1ᵢ) and P2ᵢ(x2ᵢ, y2ᵢ), respectively; the coordinate corrections are: v x1 ᵢ,vᵧ1ᵢ,v x2 ᵢ,vᵧ2ᵢ; S3: Measure the distance between the shorter sides P1ᵢ and P2ᵢ: In three adjacent pairs of measurement points, with P1ᵢ and P2ᵢ as base points, the first angle and first side length observations of P1(ᵢ-1), P2(ᵢ-1), P1(ᵢ+1), and P2(ᵢ+1) are measured. Specifically, with P1ᵢ as the base point, the first angle and first side length observations of each of the four individual measurement points P1(ᵢ-1), P2(ᵢ-1), P1(ᵢ+1), and P2(ᵢ+1) are measured. Then, with P2ᵢ as the base point, the first angle and first side length observations of each of the four individual measurement points P1(ᵢ-1), P2(ᵢ-1), P1(ᵢ+1), and P2(ᵢ+1) are measured. in, When i=1, only the first angle observation and the first side length observation of P1(ᵢ+1) and P2(ᵢ+1) need to be measured; When i=n, ​​only the first angle observation value and the first side length observation value of P1(ᵢ-1) and P2(ᵢ-1) need to be measured; in addition, The angle observations are β1ᵢ (turning angle of traverse 1) and β2ᵢ (turning angle of traverse 2), with a standard error of mᵦ. The observed side lengths are: D1ᵢ (side length of traverse 1) and D2ᵢ (side length of traverse 2), and the standard error is: m_Dᵢ = a + b・Dᵢ (a is the fixed error and b is the proportional error coefficient). S4: Based on the angle observation value and side length observation value of two individual measurement points in each pair of measurement points in S3, calculate the second angle observation value and the second side length observation value between the two individual measurement points in the pair of measurement points; the distance between the two individual measurement points in each pair of measurement points (named as the additional short side in this embodiment): sᵢ (distance between P1ᵢ and P2ᵢ), with a standard error of m; S4: repeat S2-S3 until the second angle observation and the second side length observation between the two individual measurement points in each pair are measured; The reason why the data measured by S2-S3 of the present application makes the entire traverse network more accurate and stable is as follows: I. Error equation (core constraint condition) 1. Conventional observation error equation (angle, side length) Angle error equation (take β1ᵢ of traverse 1 as an example): The angle observation value is related to the coordinates of adjacent points, and its differential form is: v_β1ᵢ = [(y1ᵢ - y1(ᵢ₋1)) / D1(ᵢ₋1)ᵢ²]·v x1 ᵢ - [(x1ᵢ - x1(ᵢ₋1)) / D1(ᵢ₋1)ᵢ²]·vᵧ1ᵢ- [(y1(ᵢ₊1) - y1ᵢ) / D1ᵢ(ᵢ₊1)²]·v x1 (ᵢ₊1) + [(x1(ᵢ₊1) - x1ᵢ) / D1ᵢ(ᵢ₊1)²]·vᵧ1(ᵢ₊1) -l_β1ᵢwherein D1(ᵢ₋1)ᵢ is the side length of P1(ᵢ₋1) to P1ᵢ in traverse 1, l_β1ᵢ = β1ᵢ^ observed - β1ᵢ^ approximate is the angle closure error.

[0026] Side length error equation (take D1ᵢ of traverse 1 as an example): The side length observation value is related to the coordinate increment, and the equation is: v_D1ᵢ = -cosα1ᵢ·v x1 ᵢ - sinα1ᵢ·vᵧ1ᵢ + cosα1ᵢ·v x1 (ᵢ₊1) + sinα1ᵢ·vᵧ1(ᵢ₊1) - l_D1ᵢwherein α1ᵢ is the azimuth angle of P1ᵢ to P1(ᵢ₊1) (cosα1ᵢ=Δx / D1ᵢ, sinα1ᵢ=Δy / D1ᵢ), l_D1ᵢ = D1ᵢ^ observed - D1ᵢ^ approximate is the side length closure error.

[0027] 2. Error equation of the measured short side (core constraint) Let the measured short side sᵢ be the distance between P1ᵢ and P2ᵢ, and its theoretical value is sᵢ 0 = √[(x2ᵢ - x1ᵢ)² + (y2ᵢ- y1ᵢ)²], and the differential equation is: v s ᵢ = -(Δxᵢ / sᵢ 0 )·v x1 ᵢ - (Δyᵢ / sᵢ 0 )·vᵧ1ᵢ + (Δxᵢ / sᵢ 0 )·v x2 ᵢ + (Δyᵢ / sᵢ0 )·vᵧ2ᵢ ​​- l s ᵢwherein, Δxᵢ = x2ᵢ 0 - x1ᵢ 0 , Δyᵢ = y2ᵢ 0 - y1ᵢ 0 (Approximate coordinate difference), l s ᵢ = sᵢ^ observation - sᵢ 0 This is the short-side closure difference.

[0028] II. Joint Adjustment Model 1. Total Error Equation The error equations for angle, side length, and the added shorter side are integrated into a matrix form: V = BX - L where: V = [v_β,v_D, v s ]^T (vector of corrections for all observations); X = [v x11 , vᵧ 11 , ..., v x2n , vᵧ 2n ]^T (vector of all coordinate corrections); B is the coefficient matrix (composed of the coefficients of the above error equation); L is a closed difference vector (l_β, l_D, l s ).

[0029] 2. Normal Equations and Solutions Introducing the weight matrix P (a diagonal matrix, P...) k = σ0² / m k ², m k (where σ0 is the standard error of the observations and σ0 is the standard error per unit weight). The normal equation is: X = BT + PB = BT + PL. Solving for the coordinate correction, we get: X = (BT + PB)⁻¹ BT + PL III. Accuracy Evaluation Formula 1. Cofactor matrix The cofactor matrix of the unknowns (coordinates) is: Q = (B^T PB)⁻¹ where, Q x1 ᵢ, x1 ᵢ, Qᵧ1ᵢ, and ᵧ1ᵢ are the x and y direction cofactors of point P1ᵢ on conductor 1, respectively.

[0030] 2. Positional error The positional error of point P1ᵢ on traverse line 1 (after adding the measurement of the shorter side): M1ᵢ = σ0 · √(Q x1 ᵢ, x1 The positional error of point P2ᵢ on the traverse line 2 (ᵢ + Qᵧ1ᵢ,ᵧ1ᵢ) is: M2ᵢ = σ0 · √(Qx2 ᵢ, x2 ᵢ + Qᵧ2ᵧ2ᵧ) where the unit weight error σ0 = √(V^T PV / (n - t)) (n is the total number of observations, t is the number of unknowns).

[0031] 3. Precision improvement comparison Without measuring the short side, the double-wire point position error is dominated by the angle cumulative error, which is approximately M'∝ L² (L is the length of the wire); after measuring the short side, the relative position of the double-wire is constrained, the point position error is significantly reduced, which is approximately M ∝ L (linear growth), and the precision improvement multiple is: k = M' / M ≈ L / C (C is a constant related to the accuracy of the short side).

[0032] Conclusion: Measuring the short side introduces additional geometric constraints through the error equation, which reduces the condition number of the normal equation coefficient matrix B^T PB and the diagonal elements of the cofactor matrix Q, and finally reflects the precision improvement through the point position error formula. In practical applications, the higher the short side accuracy and the greater the density, the stronger the constraint, and the more significant the precision improvement.

[0033] In S2, the measuring device 01 is installed on the support device, and the angle or distance is measured by using the measuring device 01, which is a prism and a total station. Among the two measuring points, one measuring point is placed with a total station, and the other measuring point is placed with a prism.

[0034] Referring to Figure 3 The support device comprises a main support assembly 1, and the main support assembly 1 comprises a top support 11 and a bottom support 12. The top support 11 is rotatably connected to the bottom support 12 through a bearing, and the top support 11 is parallel to the first direction along the rotation axis of the bottom support 12. The top support 11 is used for supporting the measuring device 01. Specifically, the measuring device 01 is fixedly connected to the top support 11 through a screw.

[0035] Referring to Figure 4After the measuring device 01 is installed on the top support 11, in order to adjust the measuring device 01 to the required position in the horizontal direction, the support device further comprises a driving assembly 2, the driving assembly 2 comprises a first linear driving part 21 and a second linear driving part 22, the driving directions of the first linear driving part 21 and the second linear driving part 22 are perpendicular to each other, so as to form a driving mechanism similar to a cross slide; specifically, the driving direction of the first linear driving part 21 is parallel to the second direction, and the driving direction of the second linear driving part 22 is parallel to the third direction; the main support assembly 1 is installed on the first linear driving part 21, so that the main support assembly 1 is driven by the first linear driving part 21 to slide in the second direction; the first linear driving part 21 is installed on the second linear driving part 22, so that the first linear driving part 21 and the main support assembly 1 are driven by the second linear driving part 22 to move in the third direction.

[0036] With reference to Figure 4 As an implementable embodiment, in the embodiment, the first linear driving part 21 and the second linear driving part 22 are both linear motors with a guide part 23 and a sliding driving part 24, the sliding driving part 24 can slide on the guide part 23 along the long side direction of the guide part 23. Specifically, the main support assembly 1 is directly or indirectly connected to the sliding driving part 24 of the first linear driving part 21, so that the main support assembly 1 is driven by the first linear driving part 21 to slide in the second direction; the guide part 23 of the first linear driving part 21 is fixedly connected to the sliding driving part 24 of the second linear driving part 22, so that the first linear driving part 21 and the main support assembly 1 are driven by the second linear driving part 22 to move in the third direction.

[0037] With reference to Figure 5 In order to facilitate the simultaneous measurement of the data of two point positions, a plurality of driving assemblies 2 are arranged side by side in the third direction, and in the embodiment, two driving assemblies 2 are arranged side by side in the third direction, the end of the guide part 23 of the second driving assembly 2 is fixedly connected, and one main support assembly 1 is connected to each driving assembly 2, so that one main support assembly 1 and one measuring device 01 are driven by each driving assembly 2.

[0038] With reference to Figure 6 In order to install the two driving assemblies 2, the support device further comprises a support frame 3, the support frame 3 comprises four guide rods, the ends of the four guide rods are fixedly connected in sequence to form a rectangular frame shape; for the convenience of description, the guide rod parallel to the second direction is named as the first guide rod 31, and the guide rod parallel to the third direction is named as the second guide rod 32. With reference to Figure 6The two ends of the guide portion 23 in the first linear driving member 21 are respectively connected with a second guide rod 32 in sliding mode, and the sliding direction of the guide portion 23 in the first linear driving member 21 along the second guide rod 32 is parallel to the third direction. In order to facilitate the sliding of the guide portion 23 in the first linear driving member 21 along the second guide rod 32, a sliding sleeve 33 is fixedly connected to the end of the guide portion 23 in the first linear driving member 21. The second guide rod 32 is arranged in the sliding sleeve 33. When the second linear driving member 22 drives the first linear driving member 21 and the measuring device 01 to slide in the third direction, the sliding sleeve 33 slides along the second guide rod 32.

[0039] With reference to Figure 6 The ends of the guide portions 23 in the two second linear driving members 22 away from each other are respectively fixedly connected with a first guide rod 31.

[0040] With reference to Figure 6 In order to support the guide rods, the support frame body 3 further comprises a plurality of support legs 34, which are fixedly connected to the guide rods. In the embodiment, four support legs 34 are arranged. The rectangular frame structure formed by the four guide rods is fixedly connected with a support leg 34 at each corner, so that the four support legs 34 support the entire support frame body 3.

[0041] With reference to Figure 7 After adjusting the entire support device to the required position, in order to fix the support frame body 3 to the ground, the support device further comprises a plurality of auxiliary support assemblies 4. As an implementable embodiment, in the embodiment, each support leg 34 is connected with an auxiliary support assembly 4.

[0042] With reference to Figure 8 The auxiliary support assembly 4 comprises a connecting plate 41, a third linear driving member 42, a first motor 43 and a drill bit 44. The connecting plate 41 is connected to the support leg 34. The third linear driving member 42 is a structure capable of achieving linear driving, such as a cylinder, an electric push rod, a linear motor or the like. In the embodiment, the third linear driving member 42 is an electric push rod. The cylinder body of the third linear driving member 42 is fixedly connected to the connecting plate 41. A through hole is formed in the connecting plate 41 for the push rod of the third linear driving member 42 to pass through. After the push rod of the third linear driving member 42 passes through the through hole in the connecting plate 41, the push rod extends to the side of the connecting plate 41 away from the measuring device 01 in the first direction. The driving direction of the third linear driving member 42 is parallel to the first direction. The shell of the first motor 43 is fixedly connected to the push rod of the third linear driving member 42, so that the first motor 43 is driven by the third linear driving member 42 to move in the first direction.

[0043] With reference to Figure 8The drill bit 44 is directly or indirectly connected to the output shaft of the first motor 43 to be driven to rotate by the first motor 43, and under the driving of the first motor 43, the rotation axis of the drill bit 44 is parallel to the first direction. As an implementable embodiment, the drill bit 44 is coaxially fixedly connected to the output shaft of the first motor 43 by a key connection to be driven to rotate by the first motor 43.

[0044] With reference to Figure 8 Further, if there are obstacles in some areas of the ground, causing the drill bit 44 to be unable to smoothly drill into the foundation, the drill bit 44 can be moved to other positions. For this purpose, the connecting plate 41 is rotationally connected to the support leg 34, the connecting plate 41 is parallel to the first direction along the rotation axis of the support leg 34, and the drill bit 44 is located on the side of the connecting plate 41 along the rotation axis of the support leg 34. In order to drive the connecting plate 41 to rotate along the support leg 34, the auxiliary support assembly 4 further comprises a second motor 45, the housing of the second motor 45 is fixedly connected to the connecting plate 41, the output shaft of the second motor 45 is fixedly connected to the support leg 34 after penetrating through the connecting plate 41, and the output shaft of the second motor 45 can rotate along the connecting plate 41. When the second motor 45 is started, the housing of the second motor 45 and the connecting plate 41 will rotate along the support leg 34.

[0045] With reference to Figure 8 During operation, if one of the drill bits 44 cannot drill into the foundation, the drill bit 44 is driven upward by the third linear drive 42 to separate from the ground. At this time, under the support of the other three auxiliary support assemblies 4, the support device will not fall down. Then, the second motor 45 is started, the connecting plate 41 rotates synchronously with the housing of the second motor 45, when the drill bit 44 rotates to the desired position, the second motor 45 is turned off, and the drill bit 44 is driven to move by the third linear drive 42 and the first motor 43, so that the drill bit 44 can be drilled into the foundation.

[0046] With reference to Figure 8 Further, in order to facilitate the movement of the support device, the auxiliary support assembly 4 further comprises a first support rod 46 and a caster 47, the caster 47 is located on the side of the connecting plate 41 away from the measuring device 01, and the first support rod 46 is fixedly connected between the caster 47 and the connecting plate 41 to support the connecting plate 41 and the entire support device by the caster 47. When it is necessary to move the connecting plate 41, the drill bit 44 is driven upward by the third linear drive 42 to separate from the ground, and then during the movement of the support device, the movement of the entire support device can be facilitated due to the presence of the caster 47.

[0047] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A method of measuring a tunnel profiled crossing conductor, characterized by, The method comprises the following steps: S1: In the tunnel clearance area, a plurality of pairs of measuring points are arranged in turn along the tunnel depth direction, and the plurality of pairs of measuring points are staggered in turn on the L side and the R side of the tunnel, so that each pair of measuring points on the L side and the R side in the adjacent two pairs of measuring points is provided with a pair of measuring points; The measuring point comprises two single measuring points arranged in turn along the tunnel depth direction, and the single measuring point far from the tunnel face is P1ᵢ and the single measuring point close to the tunnel face is P2ᵢ; S2: Measure the point data of each single measuring point in the double conductor, and the double conductor is conductor 1 and conductor 2 respectively: Conductor 1 has a plurality of single measuring points P1ᵢ, wherein i=1, 2,..., n; Conductor 2 has a plurality of single measuring points P2ᵢ, wherein i=1, 2,..., n; S3: Add the distance between P1ᵢ and P2ᵢ: In the adjacent three pairs of measuring points, take P1ᵢ and P2ᵢ as the base points respectively, and measure the first angle observation value and the first length observation value of P1(ᵢ-1), P2(ᵢ-1) and P1(ᵢ+1), P2(ᵢ+1); S4: According to the angle observation value and the length observation value of the two single measuring points in each pair of measuring points in S3, the second angle observation value and the second length observation value between the two single measuring points in the pair of measuring points are calculated; S4: Repeat S2-S3 until the second angle observation value and the second length observation value between the two single measuring points in each pair are measured.

2. The method of claim 1, wherein, In S2, the measuring device (01) is installed on the supporting device, and the angle or distance is measured by using the measuring device (01), the measuring device (01) is a prism and a total station, one of the two measuring points is placed with the total station, and the other measuring point is placed with the prism; The supporting device comprises a main supporting assembly (1), the main supporting assembly (1) comprises a top supporting piece (11) and a bottom supporting piece (12), the top supporting piece (11) is rotationally connected to the bottom supporting piece (12), and the top supporting piece (11) is parallel to the first direction along the rotation axis of the bottom supporting piece (12); The measuring device (01) is installed on the top supporting piece (11).

3. The method of claim 2, wherein, The supporting device further comprises a driving assembly (2), the driving assembly (2) comprises a first linear driving piece (21), the first linear driving piece (21) has a guide portion (23) and a sliding driving portion (24), the sliding driving portion (24) of the first linear driving piece (21) can slide along the guide portion (23) of the first linear driving piece (21) in the second direction, and the bottom supporting piece (12) is connected to the sliding driving portion (24) of the first linear driving piece (21). The first linear driving piece (21) is used for driving the bottom supporting piece (12) to slide in the second direction.

4. The method of claim 3, wherein, The driving assembly (2) further comprises a second linear driving member (22) having a sliding driving part (24) and a guiding part (23), the sliding driving part (24) of the second linear driving member (22) being capable of sliding along the guiding part (23) of the second linear driving member (22) in a third direction; the first linear driving member (21) is connected to the sliding driving part (24) of the second linear driving member (22), and the second linear driving member (22) is used to drive the first linear driving member (21) to slide in the third direction.

5. The method of claim 4, wherein, The support device further comprises a support frame (3), and the guiding part (23) of the second linear driving member (22) is fixedly connected to the support frame (3), and the guiding part (23) of the first linear driving member (21) is slidingly connected to the support frame (3) in the third direction.

6. The method of claim 5, wherein, The support device further comprises an auxiliary support assembly (4), and a plurality of auxiliary support assemblies (4) are connected to the support frame (3), and the auxiliary support assembly (4) comprises a connecting plate (41), a third linear driving member (42), a first motor (43) and a drill bit (44). The connecting plate (41) is connected to the support frame (3), the third linear driving member (42) is fixedly connected to the connecting plate (41), and the driving direction of the third linear driving member (42) is parallel to the first direction. The first motor (43) is connected to the third linear driving member (42), and the third linear driving member (42) is used to drive the first motor (43) to move in the first direction. The drill bit (44) is located on the side of the support frame (3) away from the measuring device (01), the drill bit (44) is connected to the output shaft of the first motor (43), so that the first motor (43) drives the drill bit (44) to rotate, and the rotation axis of the drill bit (44) is parallel to the first direction.

7. The method of claim 6, wherein, The auxiliary support assembly (4) further comprises a second motor (45), the second motor (45) is connected between the connecting plate (41) and the support frame (3), and is used to drive the connecting plate (41) to rotate along the support frame (3), and the rotation axis of the connecting plate (41) along the support frame (3) is parallel to the first direction. The drill bit (44) is located on the side of the connecting plate (41) along the rotation axis of the support frame (3).

8. The method of claim 6-7, wherein, The auxiliary support assembly (4) further comprises a castor (47), the castor (47) is connected to the connecting plate (41), and the castor (47) and the drill bit (44) are located on the same side of the connecting plate (41).

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