Tunnel construction steel frame installation space size and gradient inspection method

Abstract

A tunnel construction steel frame installation space size and gradient inspection method comprises the following steps that S1, the number of arch frames and the measuring line position and number of each arch frame are determined; s2, measuring the size between corresponding measuring line positions on two adjacent arch frames by using a tunnel construction steel frame mounting distance size and gradient inspection device; s3, the gradient of each measuring line position on each arch frame is calculated; s4, calculating the inclination direction and the inclination degree of the whole arch frame of each truss according to the calculation result of the step S3; s5, by taking the first arch frame as a reference, calculating the relative inclination of the last arch frame according to the calculation result of the step S4; according to the tunnel construction steel frame installation space size and gradient inspection device, after the numerical value of each measuring line is easily measured by using the tunnel construction steel frame installation space size and gradient inspection device which is simple in structure and low in cost, the gradient and the actual accumulated deviation of each measuring line on each arch frame are calculated, the inclination and the space of the steel arch frame can be effectively controlled, and the stability of the steel arch frame is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel detection equipment, and particularly relates to a method for inspecting the installation spacing size and inclination of tunnel construction steel frames. Background Art

[0002] At present, during the tunnel construction process, the installation positioning measurement steps of the primary support steel arch are as follows: First, use a total station to determine the line center, mark the elevation, and then measure its transverse coordinates and mark the position; for the next frame, mark the position of the next frame using the same method according to the designed spacing, which is reflected in the form of a triangle on the cross-section and longitudinal section. Due to the unevenness of the rock surface after tunnel excavation and the variability of construction conditions, when multiple frames of arch supports are in the same-phase support, they cannot be accurately supported according to the marked points after setting out. During tunnel construction, the position will be offset forward and backward by ±50 mm according to the spacing on the basis of the specification; generally, using a steel tape measure manually has a large measurement error, resulting in a large deviation of the three lines of a, b, and c, and then an included angle is generated on the cross-section and longitudinal section after the steel frame is installed, which is not conducive to the force stability of the steel frame; in addition, because the steel arch is spliced and supported in the tunnel, limited by the tunnel construction environment, mechanical performance, and human operation, after the steel arch is assembled, each section is also uneven in the cross-section. Therefore, the traditional plumb bob method cannot represent the inclination of each section of the entire arch support area; affected by working conditions and workload, the assembly difference of each section of the steel arch is listed as an optional measurement item and is often ignored during tunnel construction. In the case of large self-inclination and assembly difference of the steel arch and irregular spacing between frames, when encountering local soft rock formations, the situation of the primary support arch invading the limit often occurs. Summary of the Invention

[0003] Aiming at the above problems, the present invention aims to provide a method for inspecting the installation spacing size and inclination of tunnel construction steel frames, which can effectively control the inclination and spacing of the steel arch and improve its stability.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A method for inspecting the installation spacing size and inclination of tunnel construction steel frames includes the following steps:

[0006] S1: Determine the number of arch frames and the measuring line positions and quantities of each arch frame;

[0007] S2: Use the inspection device for the installation spacing size and inclination of tunnel construction steel frames to measure the size between the corresponding measuring line positions on two adjacent arch frames;

[0008] S3: Calculate the inclination of each measuring line position on each arch frame;

[0009] S4: Calculate the inclination direction and inclination degree of each arch frame as a whole according to the calculation result of step S3;

[0010] S5: Taking the first arch frame as the reference, calculate the relative inclination degree of the installation of the last arch frame according to the calculation result of step S4;

[0011] Further, the calculation method of the inclination degree at each measuring line position on each arch frame in step S3 is

[0012] q i = x i' * 180° / 3.14 ≈ x i' * 57.3°

[0013] In the formula, q i is the inclination degree of the i-th measuring line position of the arch frame, and x i' is the measured value at the i-th measuring line position minus the standard dimension between two arch frames.

[0014] Further, the formula for calculating the inclination degree of each arch frame as a whole in step S4 is

[0015] Q ≈ q1 + q2 + q3 + q4 + q5............+ q n

[0016] In the formula, Q is the inclination degree of a single arch frame as a whole, and n is the number of measuring lines; Q being a positive number indicates that the arch frame inclines towards the heading face direction, and vice versa when Q is a negative number;

[0017] According to the inclination degree calculation formula of each measuring line position, Q can be further expressed as

[0018]

[0019] Further, taking the first arch frame as the reference, the formula for calculating the relative inclination degree of the installation of the last arch frame is,

[0020]

[0021] Suppose

[0022]

[0023] According to the inference of trigonometric functions, it can be obtained that

[0024] arctan(H) ≈ S * 57.3°

[0025] H ≈ S * 57.3° * 3.14 / 180°

[0026] H ≈ Sm

[0027] Wherein, Qa is the overall inclination of the a-th arch frame, Qb is the overall inclination of the b-th arch frame, and so on;

[0028] H is the overall offset angle, S * 57.3° is the total inclination angle, and Sm is the offset value of the overall steel arch frame of this group towards the heading face.

[0029] Further, the tunnel construction steel frame installation spacing size and inclination inspection device described in step S2 includes: a crossbar and a vertical rod with a cavity, the vertical rod is located at the center of the crossbar and is perpendicularly connected to the crossbar, and baffles are slidably arranged at both ends of the crossbar;

[0030] A measuring component is arranged in the vertical rod, and the measuring component is used to measure the distance between the two baffles.

[0031] Further, stabilizing rods are arranged on the side of the baffles close to the crossbar, and the stabilizing rods are slidably arranged in the crossbar;

[0032] One end of the stabilizing rod close to the vertical rod is provided with a telescopic spring;

[0033] A rope is arranged in the vertical rod and the crossbar, and both ends of the rope are detachably connected to the two telescopic springs;

[0034] The middle section of the rope is connected to the measuring component.

[0035] Further, the measuring component includes: a first pulley, an adjusting rod, and a scale;

[0036] The adjusting rod slidably penetrates through the vertical rod;

[0037] The first pulley is connected to the adjusting rod and is located inside the vertical rod;

[0038] The rope is sleeved on the first pulley;

[0039] The scale is arranged on the vertical rod and is located on both sides of the adjusting rod.

[0040] Further, a clamping block is arranged at one end of the adjusting rod located inside the vertical rod, and a clamping groove matching the clamping block is arranged inside the vertical rod.

[0041] Further, two second pulleys are arranged at the connection of the vertical rod and the crossbar, and the two second pulleys are respectively located on both sides of the inner wall of the vertical rod;

[0042] Two third pulleys are arranged inside the crossbar, and the two third pulleys are respectively located at the ends of the two telescopic springs;

[0043] The end of the rope sequentially bypasses the corresponding second pulley and third pulley.

[0044] The beneficial effects of the present invention are:

[0045] 1. In the device for inspecting the installation spacing dimension and inclination of the tunnel construction steel frame in the present invention, one only needs to slide the adjusting rod and observe the scale. Through simple calculation, that is, 2X + the original instrument design length, the measured line value can be obtained. It not only has a simple structure and low cost, but also has high stability. After measuring the values of each measured line, through a simple calculation method, the actual cumulative deviation of the last steel frame can be easily calculated, so as to carry out inspection and correction to ensure that the spacing and inclination of the steel arch frame are within the controllable range.

[0046] 2. In the device for inspecting the installation spacing dimension and inclination of the tunnel construction steel frame in the present invention, by sliding the adjusting rod upward, the movement of the adjusting rod drives the first pulley, thereby driving the rope to move upward. Through the connection of the hook and the telescopic spring, the baffle is moved outward, so as to expand the distance between the two baffles until they abut against the edge of the arch frame. Observe the reading of the scale. Through simple calculation, that is, 2X + the original instrument design length, the measured line value can be obtained. It has a simple structure and low cost, and can be mass-produced.

[0047] 3. After calculating the measured line value through the device for inspecting the installation spacing dimension and inclination of the tunnel construction steel frame in the present invention, calculate the inclination direction and inclination of the whole of each steel arch frame. Finally, taking the first steel arch frame as a reference, calculate the actual cumulative deviation of the last steel arch frame, so as to carry out inspection and correction, which can effectively control the inclination and spacing of the steel arch frame and improve its stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 is a schematic structural diagram of a device for inspecting the installation spacing dimension and inclination of a tunnel construction steel frame proposed by the present invention;

[0049] Figure 2 is proposed by the present invention Figure 1 an enlarged schematic view of part A therein;

[0050] Figure 3 is a schematic internal structure diagram of the cross bar and the vertical bar proposed by the present invention;

[0051] Figure 4 is proposed by the present invention Figure 3 an enlarged schematic view of part B therein;

[0052] Figure 5 is a side view of the cross bar proposed by the present invention;

[0053] Figure 6 is a connection schematic diagram of the adjusting rod and the first pulley proposed by the present invention;

[0054] Figure 7 is a connection schematic diagram of the adjusting rod and the vertical bar proposed by the present invention;

[0055] Figure 8Measured values of each arch frame in the application case proposed by the present invention

[0056] Figure 9 The on-site situation before the application of the device for inspecting the installation spacing dimension and inclination of the steel frame in tunnel construction proposed by the present invention

[0057] Figure 10 The on-site effect after the application of the device for inspecting the installation spacing dimension and inclination of the steel frame in tunnel construction proposed by the present invention

[0058] 10. Cross bar; 11. Chute; 20. Vertical bar; 21. Card slot; 22. Handle; 30. Baffle; 31. Stabilizing bar; 32. Telescopic spring; 321. Hook; 33. Rope; 40. First pulley; 41. Adjusting rod; 411. Adjusting handle; 42. Scale; 421. Small scale; 43. Clamping block; 44. Second spring; 50. Second pulley; 60. Third pulley; 70. Level bubble Specific implementation mode

[0059] In order to enable ordinary technicians in the field to better understand the technical solution of the present invention, the technical solution of the present invention will be further described below with reference to the drawings and embodiments

[0060] Embodiment 1

[0061] A method for inspecting the installation spacing dimension and inclination of the steel frame in tunnel construction includes the following steps

[0062] S1: Determine the number of arch frame bays and the measuring line positions and quantities of each arch frame

[0063] S2: Use the device for inspecting the installation spacing dimension and inclination of the steel frame in tunnel construction to measure the dimension between the corresponding measuring line positions on two adjacent arch frames

[0064] S3: Calculate the inclination of each measuring line position on each arch frame

[0065] Specifically, assuming that the side lengths of the measured values in the vertical direction are all 1m, if the midpoints of n connected parts of each arch frame are measured and the inclination values q1, q2, q3, q4, q5....qn are calculated and then added together, the inclination direction and inclination Q of the entire arch frame can be calculated by the following method (using the commonly used rounding method in detection, rounding by four, rounding up by six, and rounding by five based on odd or even):

[0066] q1 = x1 * 180° / 3.14

[0067] q2 = x2 * 180° / 3.14

[0068] q3 = x3 * 180° / 3.14

[0069] q4 = x4 * 180° / 3.14

[0070] q5 = x5 * 180° / 3.14 ...............................................

[0072] q i = x i * 180° / 3.14

[0073] Therefore, the calculation method for the inclination of each measurement line position on each arch frame is

[0074] q i = x i * 180° / 3.14 ≈ x i * 57.3°

[0075] In the formula, q i is the inclination of the i-th measurement line position of the arch frame, and x i' is the measured value at the i-th measurement line position minus the standard dimension between two arch frames.

[0076] S4: Calculate the overall inclination direction and inclination of each arch frame according to the calculation results of step S3;

[0077] Specifically, the formula for calculating the overall inclination of each arch frame is

[0078] Q ≈ q1 + q2 + q3 + q4 + q5............ + q n

[0079] In the formula, Q is the overall inclination of a single arch frame, and n is the number of measurement lines; Q being a positive number indicates that the arch frame inclines towards the heading face direction, and vice versa for Q being a negative number;

[0080] According to the inclination calculation formula for each measurement line position, Q can be further expressed as

[0081]

[0082] S5: Taking the first arch frame as a reference, calculate the relative inclination of the installation of the last arch frame according to the calculation results of step S4;

[0083] Specifically, the formula for calculating the relative inclination of the installation of the last arch frame is,

[0084] Q a + Q b + Q c + Q d + Q e +..... + Q N ≈ (x1a +x 2a +x 3a +x 4a +x 5a +...+x na )

[0085] *180° / 3.14+(x 1b +x 2b +x 3b +x 4b +x 5b +...+x nb )*180° / 3.14+

[0086] (x 1c +x 2c +x 3c +x 4c +x 5c +...+x nc )*180° / 3.14+

[0087] (x 1d +x 2d +x 3c +x 4c +x 5c +...+x nc )*180° / 3.14+

[0088] (x 1e +x 2e +x 3e +x 4e +x 5e +...+x ne )*180° / 3.14+ ..........................................................

[0090] (x 1N +x 2N +x 3N +x 4N +x 5N +...+x nN )*180° / 3.14

[0091] In the formula, x 1a is the measurement value at the first measurement line position of the a-th arch frame, x 2a is the measurement value at the second measurement line position of the a-th arch frame, and so on;

[0092] After integration, the formula for calculating the relative inclination of the installation of the last arch frame can further express Q as

[0093]

[0094] Let

[0095]

[0096] According to the inference of trigonometric functions, it can be obtained that

[0097] arctan(H) ≈ S * 57.3°

[0098] H ≈ S * 57.3° * 3.14 / 180°

[0099] H ≈ Sm

[0100] Where Qa is the overall inclination of the a-th arch frame, Qb is the overall inclination of the b-th arch frame, and so on;

[0101] H is the overall deviation angle, S * 57.3° is the total inclination angle, and Sm is the deviation value of the overall steel arch frame in this group towards the heading face.

[0102] Application case:

[0103] Taking the construction of a certain expressway as an example, the side lengths of the measured values in the vertical direction of the on-site support design are all 1 m. As Figure 8 shown, the numbers in the figure represent the measured values, with the unit of cm. The values in the horizontal direction can be used to calculate their inclination in the vertical direction of the cross-section through the formula of trigonometric functions;

[0104] q j = x j * 180° / 3.14 ≈ x j * 57.3°

[0105] After measuring the midpoints (i.e., the measurement lines) of the 5 connected parts of each arch frame on-site and calculating the inclination values q1, q2, q3, q4, q5, and then adding them up, the inclination direction and inclination degree Q of the entire arch frame can be calculated (using the commonly used rounding method in detection, rounding by the rule of "rounding up if the digit to be rounded is 6 or more, rounding down if it is less than 6, and rounding to the nearest even number when the digit to be rounded is 5"):

[0106] q1 = 0.0142 * 180° / 3.14 ≈ 0.814°

[0107] q2 = -0.0214 * 180° / 3.14 ≈ -1.227°

[0108] q3 = 0.0226 * 180° / 3.14 ≈ 1.296°

[0109] q4 = 0.0316 * 180° / 3.14 ≈ 1.811°

[0110] q5 = -0.0114 * 180° / 3.14 ≈ -0.654°

[0111] Then Q ≈ q1 + q2 + q3 + q4 + q5 ≈ 0.814° - 1.227° + 1.296° + 1.811°

[0112] - 0.654° ≈ 2.041°

[0113] There are 5 frames in this erection, and the following calculations are carried out:

[0114] Q1 ≈ 2.041°, Q2 ≈ -1.995°, Q3 ≈ 0.321°, Q4 ≈ 1.972°, Q5 ≈ -1.055°

[0115] Then, taking the first arch frame of this group of arch frames as a reference, the relative inclination of the installation of the last arch frame is:

[0117] Q1 + Q2 + Q3 + Q4 + Q5 ≈ 2.041° - 1.995° + 0.321° + 1.972°

[0118] - 1.055° ≈ 1.284°

[0119] The overall forward inclination is about 1.284°. According to the trigonometric function formula, it is deduced that:

[0120] arctan(H) ≈ 1.284°

[0121] H ≈ 1.284° * 3.14 / 180°

[0122] H ≈ 0.0224m

[0123] Through the above deduction, it can be calculated that: the overall steel arch frame of this group deviates about 0.0224m in the direction of the heading face and inclines forward about 1.284°; during the next erection of the points, attention should be paid to making corrections, and it can be grouped and controlled according to the surrounding rock conditions. For example, group by 5 frames and make corrections after detection, or group by 10 frames and make corrections after detection. Ensure that the spacing and inclination of the steel arch frame are within the controllable range. The on-site comparison diagrams before and after application are shown in Figures 9 - 10.

[0124] Embodiment 2

[0125] Based on Embodiment 1, Embodiment 2 provides a specific structure of a device for inspecting the installation spacing size and inclination of a steel frame for tunnel construction, as Figures 1-7 shown, including: a cross bar 10 and a vertical bar 20 with cavities. The cross bar 10 is 40 cm, as Figure 1As shown in the figure, the vertical rod 20 is located at the center of the horizontal rod 10 and is perpendicularly connected to the horizontal rod 10. Moreover, the internal cavity structures of the horizontal rod 10 and the vertical rod 20 are connected through. The bottom of the vertical rod 20 is a handle 22, and anti-slip patterns are provided on the handle 22 to prevent it from falling when held. Baffles 30 are slidably arranged at both ends of the horizontal rod 10, and the baffles 30 are used to abut against the edge of the arch frame for stable measurement. A measuring component is arranged inside the vertical rod 20, and the measuring component is used to measure the distance between the two baffles 30, so as to realize the measurement of the numerical value of the position of the measuring line.

[0126] Furthermore, stabilizing rods 31 are arranged on one side of each baffle 30 close to the horizontal rod 10. As Figure 5 shown in the figure, a sliding groove 11 is arranged inside the horizontal rod 10, and the two stabilizing rods 31 are slidably arranged at both ends of the horizontal rod 10 through the sliding groove 11; as Figure 4 shown in the figure, one end of each of the two stabilizing rods 31 close to the vertical rod 20 is connected with a telescopic spring 32, and a hook 321 is arranged at one end of the two telescopic springs 32 close to the vertical rod 20; a rope 33 is arranged inside the vertical rod 20 and the horizontal rod 10, and both ends of the rope 33 are respectively connected to the two telescopic springs 32 through the hooks 321; the middle section of the rope 33 is connected to the measuring component. By observing the upward movement distance of the rope 33, the relative distance between the two baffles 30 is calculated, so as to realize the measurement of the numerical value of the measuring line.

[0127] Furthermore, as Figure 3 shown in the figure, the measuring component includes: a first pulley 40, an adjusting rod 41 and a scale 42; one end of the adjusting rod 41 is slidably arranged inside the vertical rod 20, and the other end is provided with an adjusting handle 411, and the adjusting handle 411 extends outside the vertical rod 20 for convenient adjustment operation; the first pulley 40 is connected to the adjusting rod 41 and is located inside the vertical rod 20; the rope 33 is sleeved on the first pulley 40; a spirit level 70 is arranged on the vertical rod 20, and the spirit level 70 is located below the scale 42. After observing the spirit level 70 and making the instrument reach a stable state, measurement is carried out; as Figure 2 shown in the figure, the scale 42 is arranged on the vertical rod 20 and is located on both sides of the adjusting rod 41. A small scale 421 is also arranged between the scales 42 on both sides. The reading principle is the same as that of a vernier caliper, and it can be accurate to 0.2 mm. By observing the scale 42 and the small scale 421, the upward movement value of the rope 33 can be obtained more accurately; the reading should be multiplied by 2, and adding the original instrument design length of 40 cm is the actual distance between the steel arch frames after measurement. That is, 2*X + 40 = L. The longest length of the scale is 80 cm, and the maximum measuring range of this measuring instrument is 2*80 + 40 = 2 m.

[0128] Furthermore, as Figure 6 and Figure 7As shown, a clamping block 43 is provided at one end of the adjusting rod 41 located inside the vertical rod 20. A second spring 44 is also provided on the adjusting rod 41. A clamping groove 21 matching the clamping block 43 is provided inside the vertical rod 20. When sliding the adjusting rod 41 for measurement, through the cooperation of the clamping block 43 and the clamping groove 21, the sliding position of the adjusting rod 41 can be locked, avoiding unnecessary displacement of the adjusting rod 41 after the two baffles 30 abut against the edge of the arch frame and affecting the measurement operation.

[0129] Further, as Figure 4 shown, two second pulleys 50 are connected at the joint of the vertical rod 20 and the cross rod 10; the two second pulleys 50 are respectively located on both sides of the inner wall of the vertical rod 20 and both are sleeved with a rope 33; two third pulleys 60 are provided inside the cross rod 10, and the two third pulleys 60 are respectively located at the ends of the two telescopic springs 32 and both are sleeved with the rope 33. That is, one end of the rope 33 is connected to the telescopic spring 32 at one end of the cross rod 10 through a hook 321. The rope 33 passes through the third pulley 60 and the second pulley 50 and is finally wound around the first pulley 40. When pushing the adjusting rod 41, the length of the rope 33 inside the cross rod 10 can be easily adjusted, thereby adjusting the relative distance between the two baffles 30. Multiply the reading by 2 and add 40 to obtain the value of the measuring line. Finally, through the calculation method in Embodiment 1, the inclination of the overall steel arch frame can be obtained.

[0130] The specific working principle of the tunnel construction steel frame installation spacing size and inclination inspection device in this embodiment is as follows:

[0131] Hold the handle 22 and lift the tunnel construction steel frame installation spacing size and inclination inspection device to the measurement position. Adjust the instrument to a stable state by observing the level bubble 70; slide the adjusting rod 41 upward until the two baffles 30 abut against the edge of the arch frame and then stop sliding; by observing the scale 42 and the small scale 421, obtain the reading of the upward movement of the rope 33. Multiply the reading by 2 and add the original designed length of the instrument, which is 40 cm, to obtain the actual distance between the steel arch frames after measurement, that is, 2*X + 40 = L.

[0132] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for checking the installation spacing and inclination of a tunnel construction steel frame, characterized in that: The following steps are included: S1: Determine the number of arch frames and the location and number of survey lines for each arch frame; S2: Use the tunnel construction steel frame installation spacing dimension and inclination inspection device to measure the dimensions between the corresponding measuring line positions on two adjacent arch frames; S3: Calculate the inclination of each measuring line position on each arch frame; S4: Calculate the overall inclination direction and inclination of each arch frame according to the calculation result of step S3; S5: Taking the first arch frame as a reference, the relative inclination of the installation of the last arch frame is calculated according to the calculation result of step S4.

2. A method for checking the installation spacing and inclination of a tunnel construction steel frame according to claim 1, characterized in that: The calculation method of the inclination of each measuring line position on each arch in step S3 is: q i =x i' *180° / 3.14≈x i' *57.3° In the formula, q i is the inclination of the i-th survey line position of the arch, x i' The measured value of the i-th survey line position minus the standard size between the two arch frames.

3. A method for checking the installation spacing and inclination of a tunnel construction steel frame according to claim 2, characterized in that: The formula for calculating the overall inclination of each arch frame in step S4 is Q≈q1+q2+q3+q4+q5............+q n In the formula, Q is the overall inclination of a single arch frame, and n is the number of survey lines. A positive number Q indicates that the arch frame is inclined toward the tunnel face, and a negative number indicates the opposite. According to the calculation formula of the inclination of each survey line position, Q can be further expressed as 4. A method for checking the installation spacing and inclination of a tunnel construction steel frame according to claim 3, characterized in that: In step S5, the formula for calculating the relative inclination of the last arch frame installation is as follows: set up According to trigonometric function inference, we can get arctan(H)≈S*57.3° H≈S*57.3°*3.14 / 180° H≈Sm Where, Qa is the overall inclination of the a-th arch frame, Qb is the overall inclination of the b-th arch frame, and so on; H is the overall offset angle, S*57.3° is the total inclination angle, and Sm is the overall offset value of this group of steel arches toward the tunnel face.

5. A method for checking the installation spacing and inclination of a tunnel construction steel frame according to claim 1, characterized in that: The tunnel construction steel frame installation spacing size and inclination inspection device described in step S2 comprises: a hollow cross bar (10) and a vertical bar (20), wherein the vertical bar (20) is located at the center of the cross bar (10) and vertically connected to the cross bar (10), and baffles (30) are slidably arranged at both ends of the cross bar (10); A measuring component is arranged inside the vertical rod (20), and the measuring component is used to measure the distance between the two baffles (30).

6. A method for checking the installation spacing and inclination of a tunnel construction steel frame according to claim 5, characterized in that: The baffle (30) is provided with a stabilizing rod (31) on one side of the cross bar (10), and the stabilizing rod (31) is slidably arranged in the cross bar (10); The stabilizing rod (31) is provided with a telescopic spring (32) at one end close to the vertical rod (20); A rope (33) is arranged inside the vertical rod (20) and the horizontal rod (10), and two ends of the rope (33) are detachably connected to the two telescopic springs (32); The middle section of the rope (33) is connected to the measuring component.

7. A method for checking the installation spacing and inclination of a tunnel construction steel frame according to claim 6, characterized in that: The measuring assembly comprises: a first pulley (40), an adjusting rod (41) and a scale (42); The adjusting rod (41) slides through the vertical rod (20); The first pulley (40) is connected to the adjustment rod (41) and is located inside the vertical rod (20); The rope (33) is sleeved on the first pulley (40); The scale (42) is arranged on the vertical rod (20) and is located on both sides of the adjustment rod (41).

8. A method for checking the installation spacing and inclination of a tunnel construction steel frame according to claim 7, characterized in that: A clamping block (43) is provided at one end of the adjusting rod (41) located inside the vertical rod (20), and a clamping slot (21) matching the clamping block (43) is provided inside the vertical rod (20).

9. A method for checking the installation spacing and inclination of a tunnel construction steel frame according to claim 6, characterized in that: Two second pulleys (50) are provided at the connection between the vertical rod (20) and the horizontal rod (10), and the two second pulleys (50) are respectively located on both sides of the inner wall of the vertical rod (20); Two third pulleys (60) are arranged in the cross bar (10), and the two third pulleys (60) are respectively located at the ends of the two telescopic springs (32); The ends of the rope (33) are passed around the corresponding second pulley (50) and third pulley (60) in sequence.

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