Temperature measuring tube arrangement device and test method for temperature monitoring in freezing construction

Abstract

The invention discloses a temperature measuring tube arrangement device and a testing method for temperature monitoring during freezing construction, and relates to the technical field of temperature field evolution monitoring. The temperature measuring tube arrangement is realized by an arrangement device in a model groove, wherein a soil body is arranged in the model groove, a freezing pipe is arranged inside the soil body, and a temperature measuring hole is opened on the soil body by means of a drilling device. The temperature measuring holes are arranged in two directions, parallel and vertical to the freezing pipe, respectively. The temperature measuring tube is placed in the temperature measuring hole through the arrangement device to monitor the temperature field evolution during the freezing process of the soil body in the model groove. The guide component of the invention enables the temperature measuring tube to be arranged from the top and side of the soil body in the model groove into the soil body, and the angle adjustment component changes the angle between the pipeline arrangement mechanism and the soil body, so that the temperature measuring tube is arranged in the soil body from the top or side of the soil body at a non-vertical or parallel angle, thereby improving the temperature measurement effect of the temperature in the soil body.

Description

Technical Field

[0001] The invention relates to the technical field of temperature field evolution monitoring, and in particular to a temperature measuring tube arrangement device and a testing method for temperature monitoring during freezing method construction. Background Art

[0002] The freezing method has become the first choice for the construction of communication channels due to its strong adaptability and good water-proof properties. In underground engineering construction, the artificial freezing method has broad application prospects, but the expansion and melting of the soil during the freezing process will have an adverse effect on surrounding projects and buildings. The changes in the properties of the soil during the freezing process directly affect the underground and above-ground structures. Especially in municipal and tunnel projects, due to the shallow burial depth, the freezing and thawing of the soil will cause the ground to rise and sink. If the underground pipeline is subjected to excessive tensile stress and shear stress during the freezing and thawing of the soil, it will be damaged. Therefore, studying and predicting the formation law of the frozen wall temperature field in the freezing method construction to determine the strength and stability of the frozen wall, analyzing the freezing and thawing amount in the freezing construction, can effectively predict the impact of the freezing method on the surrounding environment, and can provide basic data for economic and social indicators such as energy saving and shortening construction period, which is of great significance to the promotion of the application of freezing method construction in engineering.

[0003] A Chinese patent application with application number 201410022445.X discloses a lateral displacement multifunctional model trough experimental system, which includes a model trough part, an experimental loading part, and a measuring part. The model trough part is connected to the experimental loading part by bolts, and the measuring part is fixed to the model trough part by screws. However, after the drilling of the soil in the model trough is completed, the arrangement of the temperature measuring tube into the soil and the extraction of the temperature measuring tube from the soil when the temperature measuring scheme is adjusted need to be done manually, which is not only time-consuming and labor-intensive, but also has low efficiency in the arrangement of the temperature measuring tube.

[0004] In addition, when the temperature measuring tube moves inward corresponding to the temperature measuring hole, the bottom surface of the temperature measuring tube will scrape off the soil on the inner wall of the temperature measuring hole. The accumulation of soil in the temperature measuring hole will become a resistance to the movement of the temperature measuring tube into the temperature measuring hole, causing the temperature measuring tube to be unable to correspond to the preset position. After the temperature measuring tube completes the temperature field monitoring of the soil, the freezing effect of the soil and the temperature measuring tube causes the temperature measuring tube to be unable to escape from the temperature measuring hole in time.

[0005] Therefore, a temperature measuring tube arrangement device and a testing method for temperature monitoring during freezing construction are proposed to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to disclose a temperature measuring tube arrangement device and a testing method for temperature monitoring during freezing construction, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above purpose, the present invention is implemented by the following technical scheme: a temperature measuring tube arrangement device for temperature monitoring of freezing construction, wherein the temperature measuring tube arrangement is realized by an arrangement device in a model groove, a soil body is arranged in the model groove, a freezing pipe is arranged inside the soil body, a temperature measuring hole is opened on the soil body by a drilling device, and the temperature measuring holes are arranged in two directions, parallel and perpendicular to the freezing pipe, respectively, and the temperature measuring tube is placed in the temperature measuring hole by the arrangement device to monitor the evolution of the temperature field during the freezing process of the soil body in the model groove;

[0008] A side plate is provided on one side of the model groove, the arrangement device includes a guide assembly, an angle adjustment assembly is provided on the top of the guide assembly, a pipeline arrangement mechanism is provided on the angle adjustment assembly, the angle adjustment assembly includes a curved rail and a first support plate, an angle guide wheel is connected to one side of the first support plate, an angle motor is provided on the other side of the first support plate, a curved rack plate is provided on one side of the curved rail, a rotating shaft of the angle guide wheel passes through the first support plate and is provided with an angle gear, and the first support plate is provided with a second support plate through a connecting rod;

[0009] The pipeline arrangement mechanism includes a storage groove, a positioning assembly, a feeding assembly, a rotating assembly and a cylinder. The positioning assembly includes a positioning frame, and electric telescopic rods are symmetrically provided on both sides of the positioning frame. The telescopic ends of the electric telescopic rods pass through the positioning frame and are provided with clamping plates. The feeding assembly includes a cover plate, and the internal transmission of the cover plate is connected with a synchronous belt.

[0010] Optionally, the guide assembly includes a guide plate, a movable frame and a driven slide rail, a guide rack plate is provided on one side of the guide plate, a guide motor is provided on one side of the movable frame, a rotating shaft of the guide motor passes through the movable frame and is provided with a guide gear, the guide gear corresponds to the guide rack plate, a slide groove is provided on the side of the guide plate away from the guide motor, a slideway is provided in the middle of the slide groove, a guide wheel is movably connected inside the slide groove, and the rotating shaft of the guide wheel passes through the slideway and is fixedly connected to the movable frame.

[0011] Optionally, the angle motor is arranged on the side of the first support plate away from the curved rail, the angle guide wheel is arranged on the side of the first support plate close to the curved rail, the angle gear corresponds to the curved rack plate, a limit plate is provided on the side of the first support plate close to the curved rail, the limit plate corresponds to the curved rail, the limit plate is L-shaped, and the inner groove of the limit plate is adapted to the curved rail.

[0012] Optionally, the cylinder is fixedly connected to the second support plate, the positioning assembly, feeding assembly and rotating assembly are arranged at the telescopic end of the cylinder, and connecting legs are provided at both ends of the curved rail, one of the connecting legs is fixedly connected to the movable frame, and the other connecting leg is movably connected to the driven slide rail.

[0013] Optionally, the storage groove is fixedly connected to the second support plate, a groove is opened on one side of the storage groove, a temperature measuring tube is placed inside the storage groove, an electric multi-section telescopic rod is provided on the side of the storage groove away from the groove, the telescopic end of the electric multi-section telescopic rod passes through the side of the storage groove away from the groove and is provided with a push plate, and the positioning frame is fixedly connected to the telescopic end of the cylinder.

[0014] Optionally, the cover plate is internally rotatably connected with a driving shaft and a driven shaft, the synchronous belt is sleeved on the outside of the driving shaft and the driven shaft, a feed motor is provided at the corresponding position of the cover plate and the driving shaft, the rotating shaft of the feed motor passes through one side of the cover plate and is fixedly connected to the driving shaft, and the cover plate is fixedly connected to the telescopic end of the cylinder.

[0015] Optionally, the rotating assembly includes a supporting plate, the internal rotation of which is connected to a driven gear and a driving gear, the driven gear and the driving gear are meshingly connected, a rotating motor is provided at the bottom of the supporting plate, a rotating shaft of the rotating motor passes through the bottom of the supporting plate and is fixedly connected to the driving gear, a vertical cylinder is provided in the middle of the driven gear, an opening is provided on the supporting plate at a position corresponding to the vertical cylinder, and the supporting plate is fixedly connected to the telescopic end of the cylinder.

[0016] Optionally, the side plate is movably embedded in one side of the model groove, a first torque sensor is provided on the rotating shaft of the feed motor, and a second torque sensor is provided on the rotating shaft of the rotating motor.

[0017] The present invention also discloses a testing method, which uses the temperature measuring tube arrangement device as claimed in claim to test the temperature of the soil in the model tank, comprising the following steps:

[0018] S1. Multiple measuring points are set in the soil of the model trough. According to the distribution of the measuring points, the drilling equipment is used to open the temperature measuring holes in the soil in two directions parallel and perpendicular to the freezing pipe. The guide assembly and the angle adjustment assembly are used to arrange the temperature measuring pipes and the temperature measuring holes in correspondence.

[0019] S2. The measuring point area is equipped with temperature sensors buried in the soil and temperature sensors placed in the temperature measuring tube. After the temperature measuring tube is arranged, the temperature sensor in the temperature measuring tube monitors the evolution of the temperature field in the freezing process of the soil in the model tank, and studies the relationship between the indirect temperature measurement method through the temperature measuring tube and the direct temperature measurement method buried in the soil.

[0020] S3. The materials of the temperature measuring tube are steel tube and clay tube respectively. The temperature measuring tube adopts two processing methods: empty and filled model trough soil. The temperature change process during the freezing process is tested respectively. The measurement results of the temperature measuring tube are compared with the measurement results of the temperature sensor placed in the soil to study the rationality and practicality of the test temperature measurement method, and provide a theoretical basis for determining the true temperature of the soil from the test temperature during the freezing method construction.

[0021] S4. Monitor the temperature evolution of the soil in the model trough by setting up plastic temperature measuring tubes, and perform temperature measurement comparison to improve the temperature measurement method.

[0022] Technical effects and advantages of the present invention:

[0023] 1. The present invention enables the temperature measuring tube to be arranged from the top and side of the model trough soil body into the soil body through the guide component, and changes the angle between the pipeline arrangement mechanism and the soil body through the angle adjustment component, so that the temperature measuring tube can be arranged vertically or parallel to the freezing tube, and can be arranged in the soil body from the top or side of the soil body at a non-vertical or parallel angle, thereby improving the monitoring range of the temperature measuring tube in the soil body, and further improving the temperature measurement effect of the soil body.

[0024] 2. The present invention utilizes a storage groove to pre-store the temperature measuring tube, the positioning component provides a limit for the middle and upper part of the temperature measuring tube, the feeding component drives the temperature measuring tube to move toward the temperature measuring hole of the soil, and moves the temperature measuring tube to a preset position in the temperature measuring hole. The rotating component rotates when the temperature measuring tube is arranged in the temperature measuring hole to reduce the resistance of the temperature measuring tube when it moves toward the temperature measuring hole, thereby improving the arrangement efficiency of the temperature measuring tube.

[0025] 3. If the temperature measuring tube of the present invention has not reached the preset position, the feeding assembly drives the temperature measuring tube to move up and down, so that the temperature measuring tube moves outward from the temperature measuring hole and then moves into the inside of the temperature measuring tube. The speed at which the temperature measuring tube moves into the temperature measuring hole is faster than the speed at which the temperature measuring tube moves out of the temperature measuring tube. The rotating assembly rotates the temperature measuring tube so that the temperature measuring tube repeatedly impacts the soil accumulated at the bottom of the temperature measuring hole, squeezing the soil between the temperature measuring tube and the temperature measuring hole, so that the temperature measuring tube moves to the preset position in the temperature measuring hole.

[0026] 4. After the temperature measuring tube completes the temperature monitoring of the soil, the positioning assembly and the feeding assembly are connected to the temperature measuring tube under the drive of the cylinder, and then the vibration force generated by the repeated knocking of the temperature measuring tube by the positioning assembly is used to accelerate the separation of the temperature measuring tube from the temperature measuring hole, thereby improving the efficiency of the temperature measuring tube from being removed from the temperature measuring hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the arrangement device of the present invention;

[0028] Figure 2 It is a schematic diagram of the angle adjustment component structure of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the positioning assembly, the feeding assembly and the rotating assembly of the present invention;

[0030] Figure 4 It is a schematic diagram of the positioning component structure of the present invention;

[0031] Figure 5 It is a schematic diagram of the feeding assembly structure of the present invention;

[0032] Figure 6 It is a schematic diagram of the rotating assembly structure of the present invention;

[0033] Figure 7 It is a schematic diagram of the connecting structure of the guide gear and the guide rack plate of the present invention;

[0034] Figure 8 It is a schematic diagram of the connection structure between the driven slide rail and the guide wheel of the present invention;

[0035] Fig. 9 It is a schematic diagram of the arrangement structure of the temperature measuring tube and the freezing tube of the present invention.

[0036] In the figure: 1, model slot; 101, side plate; 3, guide assembly; 301, guide plate; 3011, guide rack plate; 3012, driven slide rail; 302, movable frame; 303, guide motor; 3031, guide gear; 304, slide slot; 3041, slideway; 305, guide wheel; 4, angle adjustment assembly; 401, curved rail; 4011, curved rack plate; 402, first support plate; 403, angle motor; 4031, angle gear; 404, limit plate; 405, angle guide wheel; 406, Connecting rod; 407, second supporting plate; 408, connecting leg; 5, storage slot; 501, slotting; 502, electric multi-section telescopic rod; 6, positioning assembly; 601, positioning frame; 602, electric telescopic rod; 603, clamping plate; 7, feeding assembly; 701, cover plate; 702, feeding motor; 703, driving shaft; 704, driven shaft; 705, synchronous belt; 8, rotating assembly; 801, supporting plate; 802, driven gear; 803, driving gear; 804, rotating motor; 805, vertical cylinder; 9, cylinder. DETAILED DESCRIPTION

[0037] In order to more clearly understand the above-mentioned purposes, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from the description. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below. Embodiment 1

[0039] See also Figure 1-9 The present embodiment discloses a temperature measuring tube arrangement device for temperature monitoring of freezing construction. The temperature measuring tube arrangement is realized by an arrangement device in a model groove 1. A soil body is arranged in the model groove 1, and a freezing tube is arranged inside the soil body. A temperature measuring hole is opened in the soil body by a drilling device. The temperature measuring holes are arranged in two directions, parallel and perpendicular to the freezing tube. The temperature measuring tube is placed in the temperature measuring hole by the arrangement device to monitor the evolution of the temperature field during the freezing process of the soil body in the model groove 1.

[0040] A side plate 101 is provided on one side of the model slot 1, and the side plate 101 is movably embedded in one side of the model slot 1. The arrangement device includes a guide component 3, and the guide component 3 is arranged at the top of the model slot 1. The top of the guide component 3 is provided with an angle adjustment component 4, and the angle adjustment component 4 is provided with a pipeline arrangement mechanism. The angle adjustment component 4 includes a curved rail 401 and a first support plate 402. One side of the first support plate 402 is connected to an angle guide wheel 405, and the angle guide wheel 405 is arranged on one side of the first support plate 402 close to the curved rail 401. The other side of the first support plate 402 is provided with an angle motor 403, and the angle motor The machine 403 is arranged on the side of the first support plate 402 away from the curved rail 401, and a curved rack plate 4011 is provided on one side of the curved rail 401. The rotating shaft of the angle guide wheel 405 passes through the first support plate 402 and is provided with an angle gear 4031. The first support plate 402 is provided with a second support plate 407 through a connecting rod 406. The guide component 3 enables the angle adjustment component 4 and the pipeline arrangement mechanism to cover the position of the temperature measuring hole on the soil. The angle adjustment component 4 adjusts the angle of the temperature measuring tube so that the temperature measuring tube corresponds to the angle of the opened temperature measuring hole. The pipeline arrangement mechanism arranges the temperature measuring tube according to the position of the temperature measuring hole in the soil.

[0041] The pipeline arrangement mechanism includes a storage groove 5, a positioning assembly 6, a feeding assembly 7, a rotating assembly 8 and a cylinder 9. The storage groove 5 is fixedly connected to the second support plate 407, the cylinder 9 is fixedly connected to the second support plate 407, and the positioning assembly 6, the feeding assembly 7 and the rotating assembly 8 are arranged at the telescopic end of the cylinder 9.

[0042] The storage groove 5 is arranged on the side of the second support plate 407 away from the first support plate 402. The positioning assembly 6 includes a positioning frame 601, which is fixedly connected to the telescopic end of the cylinder 9. Electric telescopic rods 602 are symmetrically arranged on both sides of the positioning frame 601. The telescopic ends of the electric telescopic rods 602 penetrate the positioning frame 601 and are provided with clamping plates 603. The feeding assembly 7 includes a cover plate 701. The internal transmission of the cover plate 701 is connected with a synchronous belt 705. The storage groove 5 pre-stores the temperature measuring tube. The positioning assembly 6 provides limited support for the middle and upper parts of the temperature measuring tube to improve the stability of the temperature measuring tube during arrangement. The feeding assembly 7 drives the temperature measuring tube to move into the temperature measuring hole. The rotating assembly 8 keeps the temperature measuring tube rotating when moving toward the temperature measuring hole. The cylinder 9 drives the positioning assembly 6, the feeding assembly 7 and the rotating assembly 8 to move synchronously.

[0043] The guide assembly 3 includes a guide plate 301, a movable frame 302 and a driven slide rail 3012. A guide rack plate 3011 is provided on one side of the guide plate 301, and a guide motor 303 is provided on one side of the movable frame 302. The rotating shaft of the guide motor 303 passes through the movable frame 302 and is provided with a guide gear 3031. The guide gear 3031 corresponds to the guide rack plate 3011. A slide groove 304 is provided on the side of the guide plate 301 away from the guide motor 303. A slideway 3041 is provided in the middle of the slide groove 304. A guide wheel 305 is movably connected inside the slide groove 304. The rotating shaft of the guide wheel 305 passes through the slideway 3041 and is fixedly connected to the movable frame 302.

[0044] The angle gear 4031 corresponds to the curved rack plate 4011 . A limit plate 404 is provided on one side of the first support plate 402 close to the curved rail 401 . The limit plate 404 corresponds to the curved rail 401 . The limit plate 404 is L-shaped. The inner groove of the limit plate 404 matches the curved rail 401 .

[0045] Connecting legs 408 are provided at both ends of the curved rail 401 , one connecting leg 408 is fixedly connected to the movable frame 302 , and the other connecting leg 408 is movably connected to the driven slide rail 3012 .

[0046] A slot 501 is provided on one side of the storage slot 5, and a temperature measuring tube is placed inside the storage slot 5. The length, outer diameter and inner diameter of the temperature measuring tube in the storage slot 5 are all the same. An electric multi-section telescopic rod 502 is provided on the side of the storage slot 5 away from the slot 501. The telescopic end of the electric multi-section telescopic rod 502 passes through the side of the storage slot 5 away from the slot 501 and is provided with a push plate, which is in contact with the temperature measuring tube in the storage slot 5.

[0047] The internal rotation of the cover plate 701 is connected with a driving shaft 703 and a driven shaft 704, and the synchronous belt 705 is sleeved on the outside of the driving shaft 703 and the driven shaft 704. A feed motor 702 is provided at the corresponding position of the cover plate 701 and the driving shaft 703. The rotating shaft of the feed motor 702 passes through one side of the cover plate 701 and is fixedly connected to the driving shaft 703. The cover plate 701 is fixedly connected to the telescopic end of the cylinder 9.

[0048] The rotating assembly 8 includes a support plate 801, and the internal rotation of the support plate 801 is connected with a driven gear 802 and a driving gear 803, and the driven gear 802 and the driving gear 803 are meshed and connected. A rotating motor 804 is provided at the bottom of the support plate 801, and the rotating shaft of the rotating motor 804 passes through the bottom of the support plate 801 and is fixedly connected to the driving gear 803. A vertical cylinder 805 is provided in the middle of the driven gear 802, and a locking mechanism is provided inside the vertical cylinder 805. The locking mechanism is used to make the vertical cylinder 805 rotate synchronously with the temperature measuring tube. The locking mechanism is an electromagnetic latch. An opening is opened on the support plate 801 at a position corresponding to the vertical cylinder 805, and the support plate 801 is fixedly connected to the telescopic end of the cylinder 9.

[0049] During use, the temperature measuring hole is drilled in the soil from top to bottom in the vertical direction of the freezing pipe by using a drilling device. After the side plate 101 is removed from the model slot 1, the temperature measuring hole is opened in the soil by using a drilling device from one side of the model slot 1. In the guide assembly 3, by starting the guide motor 303, under the meshing cooperation of the guide gear 3031 and the guide rack plate 3011, and the guiding effect of the slide 304 on the guide wheel 305, the guide gear 3031 drives the movable frame 302 to move along the guide rack plate 3011. During the movement of the movable frame 302, the angle adjustment assembly 4 and the pipeline arrangement mechanism are driven to move synchronously. The guide plate 301 and the guide wheel 305 are guided by the guide gear 3031. The movable slide rails 3012 include a horizontal portion and a curved portion. When the guide gear 3031 moves in the horizontal portion, the angle adjustment assembly 4 and the pipeline arrangement mechanism are located above the model slot 1, so that the temperature measuring tube is arranged from the top of the soil body downward. When the guide gear 3031 moves to the curved portion along the guide rack plate 3011, the temperature measuring tube can be arranged from one side of the soil body into the soil body, thereby achieving the effect of arranging the temperature measuring tube from the top and the side into the soil body. Multiple measuring points are set in the model slot 1, and the temperature sensors correspond to the measuring points. The method of directly burying them in the soil body and placing them in the temperature measuring tubes corresponding to the measuring points is adopted to study and test the relationship between the indirect temperature measurement method using the temperature measuring tubes and the direct temperature measurement method buried in the soil body.

[0050] The temperature measuring tube is arranged in the temperature measuring hole in parallel and perpendicular directions to the freezing tube. A temperature sensor is implanted in the temperature measuring tube to monitor the temperature at the freezing site. The temperature measuring tube is made of steel tube and clay tube. The temperature measuring tube is treated by two methods: empty and filled with model slot 1 soil. The temperature change process during the freezing process is tested respectively. The measurement results of the temperature measuring tube are compared with the measurement results of the temperature sensor inserted in the soil to study the rationality and practicality of the temperature measurement method, and provide a theoretical basis for determining the true temperature of the soil by temperature testing during freezing construction. By setting other different temperature measuring tube materials such as plastic, temperature measurement comparison is carried out to improve the temperature measurement method.

[0051] At the same time, in the angle adjustment component 4, by starting the angle motor 403, under the meshing cooperation of the angle gear 4031 and the curved rack plate 4011, and the limiting cooperation of the limit plate 404 and the curved rail 401, the first support plate 402, the angle motor 403, the limit plate 404, the angle guide wheel 405, the connecting rod 406, the second support plate 407 and the pipeline arrangement mechanism are moved along the curved rail 401. During the movement, the angle between the pipeline arrangement mechanism and the soil is changed, so that the temperature measuring tube is arranged vertically or parallel to the freezing tube, and is arranged in the soil from the top or side of the soil at a non-vertical or parallel angle, so as to increase the monitoring range of the temperature measuring tube in the soil, thereby improving the temperature measurement effect of the soil body.

[0052] In the pipeline arrangement mechanism, a plurality of temperature measuring tubes are pre-stored in the storage groove 5. Under the pushing action of the electric multi-section telescopic rod 502 on the push plate, the plurality of temperature measuring tubes are stably maintained inside the storage groove 5. The two clamping plates 603 are separated by the contraction of the electric multi-section telescopic rod 602. At this time, under the pushing action of the electric multi-section telescopic rod 502 on the push plate and the temperature measuring tube, the temperature measuring tube close to the slot 501 moves further toward the slot 501, so that the temperature measuring tube fits the inner wall of the storage groove 5. Under the influence of gravity, the temperature measuring tube slides downward, and the bottom end of the temperature measuring tube corresponds to one end of the synchronous belt 705. At this time, the telescopic end of the electric telescopic rod 602 extends, and the two clamps 603 clamp the temperature measuring tube in the slot 501. The feed motor 702 is started, and the feed motor 702 drives the driven shaft 704 to rotate through the active shaft 703 and the synchronous belt 705. During the rotation of the synchronous belt 705, the friction between the synchronous belt 705 and the temperature measuring tube is used to drive the temperature measuring tube to move downward.

[0053] It should be noted that the clamping force of the two clamps 603 on the temperature measuring tube is smaller than the friction between the synchronous belt 705 and the temperature measuring tube. When the feed motor 702 is started, the synchronous belt 705 rotates and drives the temperature measuring tube to move. When the feed motor 702 is turned off, the temperature measuring tube is limited by the clamping force of the two clamps 603, so that the temperature measuring tube remains stable.

[0054] At the same time, driven by the feed motor 702, the temperature measuring tube continues to move downward after passing through the cover plate 701 and the vertical cylinder 805. After the temperature measuring tube is connected to the temperature measuring hole, the feed motor 702 drives the driving shaft 703 to rotate counterclockwise, and cooperates with the driven shaft 704 to drive the synchronous belt 705 to move the temperature measuring tube downward for a distance and then stop. Then the locking structure in the vertical cylinder 805 is locked and fixed with the temperature measuring tube, and the rotating motor 804 drives the driven gear 802 and the vertical cylinder 805 to rotate by using the driving gear 803. The temperature measuring tube rotates synchronously. When the part of the temperature measuring tube entering the temperature measuring hole rotates, the measuring tube The inner wall of the temperature hole is frictionally smooth, thereby reducing the resistance of the inner wall of the temperature measuring hole when the temperature measuring tube is arranged inwardly, and making the temperature measuring tube stably contact with the inner wall of the temperature measuring hole. Then, the locking structure in the vertical cylinder 805 is unlocked from the temperature measuring tube, and the temperature measuring tube is continued to be moved toward the temperature measuring hole through the feed motor 702 in cooperation with the active shaft 703, the driven shaft 704 and the synchronous belt 705, and the rotating motor 804 cooperates with the active gear 803, the driven gear 802 and the vertical cylinder 805 to drive the temperature measuring hole to rotate, so that the temperature measuring tube moves steadily into the temperature measuring hole step by step until it reaches the preset position in the temperature measuring hole.

[0055] When the top end of the temperature measuring tube is separated from the synchronous belt 705, the positioning frame 601, the cover plate 701 and the support plate 801 move upward under the contraction action of the telescopic end of the cylinder 9, so that the top end of the temperature measuring tube is separated from the bottom surface of the support plate 801, so as to arrange the subsequent temperature measuring tube into the soil.

[0056] After the temperature measuring tube completes the temperature monitoring of the soil, the freezing tube stops the cyclic freezing of the soil, and all the temperature measuring tubes in the storage groove 5 are withdrawn. Then, the meshing cooperation of the guide gear 3031 and the guide rack plate 3011, as well as the meshing cooperation of the angle gear 4031 and the curved rack plate 4011 are used to adjust the position of the vertical cylinder 805 so that the vertical cylinder 805 corresponds to the temperature measuring tubes installed in the soil in turn. Then, the extension of the telescopic end of the cylinder 9 is used to make the top end of the temperature measuring tube pass through the vertical cylinder 805 and contact the synchronous belt 705. The feed motor 702 is started and drives the synchronous belt 705 to rotate clockwise through the driving shaft 703 and the driven shaft 704. The friction between the synchronous belt 705 and the temperature measuring tube is used to pull the temperature measuring tube upward from the temperature measuring hole. Embodiment 2

[0057] See also Figure 1-9 In actual use, when the temperature measuring tube corresponds to the temperature measuring hole and is arranged inward, the bottom surface of the temperature measuring tube will scrape off the soil on the inner wall of the temperature measuring hole, and the scraped soil falls to the bottom of the temperature measuring hole and gradually accumulates. The accumulated soil makes it impossible for the temperature measuring tube and the temperature sensor in the temperature measuring tube to correspond to the preset position. In this regard, the following embodiment 2 is provided to solve the above problem:

[0058] A first torque sensor is provided on the rotating shaft of the feed motor 702, and the first torque sensor is used to detect whether soil accumulation is formed in the temperature measuring hole.

[0059] During use, a threshold value A is preset on the first torque sensor. When the temperature measuring tube moves to the preset position of the temperature measuring hole, if the temperature measuring tube does not reach the preset position, but the torque value detected by the first torque sensor reaches A, it means that soil accumulation has formed at the bottom of the temperature measuring tube and reaches a level that affects the temperature measuring tube from reaching the preset position of the temperature measuring hole. At this time, the feed motor 702 is used to drive the active shaft 703 to rotate repeatedly clockwise and counterclockwise, so that the synchronous belt 705 repeatedly drives the temperature measuring tube to move up and down. Specifically, the feed motor 702 drives the active shaft 703 to rotate clockwise, and under the action of the friction between the synchronous belt 705 and the temperature measuring tube, the temperature measuring tube is driven to move upward. Then the feed motor 702 drives the active shaft 703 to rotate counterclockwise rapidly, and under the action of the friction between the synchronous belt 705 and the temperature measuring tube, the temperature measuring tube is moved downward rapidly, so that the temperature measuring tube repeatedly moves up and down during the rotation process, repeatedly impacts the soil accumulated at the bottom of the temperature measuring hole, presses the soil downward, reduces the soil height, and enables the temperature measuring tube to move further into the temperature measuring hole.

[0060] However, due to the uneven distribution of soil accumulated at the bottom of the temperature measuring hole, when the bottom of the temperature measuring tube presses down on the soil, the thicker soil still hinders the movement of the temperature measuring tube to the preset position of the temperature measuring hole. In this regard, the following improvements are made:

[0061] When the torque value detected by the first torque sensor reaches A, the feed motor 702 is turned off, the locking mechanism in the vertical cylinder 805 is locked and fixed with the vertical cylinder 805, and then the rotating motor 804 is started. Under the meshing cooperation of the driven gear 802 and the driving gear 803, the vertical cylinder 805 and the temperature measuring tube keep rotating, and the soil in the thicker area is transferred to the thinner area by the squeezing friction of the bottom of the temperature measuring tube on the soil at the bottom of the temperature measuring hole. After the temperature measuring tube rotates, the locking mechanism in the vertical cylinder 805 releases the lock on the temperature measuring tube, and the feed motor 702 continues to drive the temperature measuring tube to move into the temperature measuring hole. During this process, when the torque value detected by the first torque sensor is lower than A, it indicates that the temperature measuring tube is moving downward. At this time, the distance that the feed motor 702 drives the driving shaft 703 to rotate counterclockwise is further increased, and the distance that the feed motor 702 drives the driving shaft 703 to rotate clockwise remains unchanged. In this way, the temperature measuring tube continues to move downward and moves to a preset position in the temperature measuring hole.

[0062] On the other hand, after the temperature measuring tube completes the temperature monitoring of the soil, due to the freezing of the soil by the freezing tube, the temperature measuring tube will freeze with the inner wall of the temperature measuring hole, and the temperature measuring tube cannot be removed from the temperature measuring hole in time. In this regard, the following solution is provided to solve the above problem:

[0063] After the temperature measuring tube completes the temperature monitoring of the soil, all the temperature measuring tubes in the storage tank 5 are withdrawn, and the freezing tube stops the circulating freezing of the soil. Under the meshing cooperation of the guide gear 3031 and the guide rack plate 3011, and the meshing cooperation of the angle gear 4031 and the curved rack plate 4011, the position of the vertical cylinder 805 is adjusted so that the vertical cylinder 805 corresponds to the temperature measuring tubes installed in the soil in turn, and through the extension of the telescopic end of the cylinder 9, the top end of the temperature measuring tube passes through the vertical cylinder 805, the gap between the synchronous belt 705 and the cover plate 701, and the splint 603 in turn.

[0064] A second torque sensor is provided on the rotating shaft of the rotating motor 804. The second torque sensor is provided with a preset threshold value B. When the second torque sensor detects that the torque threshold value reaches B, it indicates that the temperature measuring tube and the soil on the inner wall of the temperature measuring hole are frozen. At this time, the rotating motor 804 keeps starting, and applies a rotating force to the temperature measuring tube through the driving gear 803, the driven gear 802 and the vertical cylinder 805. Then, the two clamps 603 repeatedly knock on the temperature measuring tube through the repeated extension and retraction of the telescopic ends of the two electric telescopic rods 602. The clamps 603 are used to The vibration of the temperature measuring tube when it is knocked gradually causes the temperature measuring tube to separate from the temperature measuring hole. When the second torque sensor detects that the torque threshold is lower than B, it means that the temperature measuring tube rotates in the temperature measuring hole, indicating that the temperature measuring tube has been separated from the temperature measuring hole. At this time, the rotating motor 804 is turned off, and the feed motor 702 is started. The driving shaft 703 and the driven shaft 704 are used to drive the synchronous belt 705 to rotate clockwise. The friction between the synchronous belt 705 and the temperature measuring tube is used to pull the temperature measuring tube upward from the temperature measuring hole, thereby completing the extraction operation of the temperature measuring tube in the soil. Embodiment 3

[0065] This embodiment discloses a testing method, which uses the above temperature measuring tube arrangement device to test the temperature of the soil in the model tank, and the steps are as follows:

[0066] S1. Multiple measuring points are arranged in the soil of the model trough 1. According to the distribution of the measuring points, the drilling equipment is used to open temperature measuring holes in the soil in two directions parallel and perpendicular to the freezing pipes. The guide component 3 and the angle adjustment component 4 are used to coordinate the temperature measuring pipes and the temperature measuring holes.

[0067] S2. The measuring point area is respectively provided with a temperature sensor buried in the soil and a temperature sensor placed in a temperature measuring tube. After the temperature measuring tube is arranged, the temperature sensor in the temperature measuring tube monitors the evolution of the temperature field during the freezing process of the soil in the model tank 1, and studies the relationship between the indirect temperature measurement method through the temperature measuring tube and the direct temperature measurement method buried in the soil.

[0068] S3. The materials of the temperature measuring tube are steel tube and clay tube respectively. The temperature measuring tube is treated with two methods: empty and filled with model slot 1 soil. The temperature change process during the freezing process is tested respectively, and the measurement results of the temperature measuring tube are compared with the measurement results of the temperature sensor placed in the soil to study the rationality and practicality of the test temperature measurement method, so as to provide a theoretical basis for determining the true temperature of the soil by the test temperature during freezing construction.

[0069] S4. By setting other different temperature measuring tube materials such as plastic, the temperature evolution of the soil in the model tank 1 is monitored and temperature measurement comparison is performed to improve the temperature measurement method.

[0070] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A temperature measuring tube arrangement device for temperature monitoring during freezing process, wherein the temperature measuring tube arrangement device is used to arrange the temperature measuring tube in a model tank (1), characterized in that: The model trough (1) is provided with a soil body, a freezing pipe is provided inside the soil body, a temperature measuring hole is opened on the soil body by means of a drilling device, the temperature measuring holes are arranged in two directions, parallel and perpendicular to the freezing pipe, and the temperature measuring pipe is placed in the temperature measuring hole by means of an arrangement device, so as to monitor the evolution of the temperature field during the freezing process of the soil body in the model trough (1); A side plate (101) is provided on one side of the model tank (1); the arrangement device comprises a guide assembly (3); an angle adjustment assembly (4) is provided on the top of the guide assembly (3); a pipeline arrangement mechanism is provided on the angle adjustment assembly (4); the angle adjustment assembly (4) comprises a curved rail (401) and a first support plate (402); an angle guide wheel (405) is connected to one side of the first support plate (402); an angle motor (403) is provided on the other side of the first support plate (402); a curved rack plate (4011) is provided on one side of the curved rail (401); a rotating shaft of the angle guide wheel (405) passes through the first support plate (402) and is provided with an angle gear (4031); and the first support plate (402) is provided with a second support plate (407) via a connecting rod (406); The pipeline arrangement mechanism comprises a storage groove (5), a positioning assembly (6), a feeding assembly (7), a rotating assembly (8) and a cylinder (9); the positioning assembly (6) comprises a positioning frame (601); electric telescopic rods (602) are symmetrically arranged on both sides of the positioning frame (601); the telescopic ends of the electric telescopic rods (602) penetrate the positioning frame (601) and are provided with clamping plates (603); the feeding assembly (7) comprises a cover plate (701); the cover plate (701) is internally connected to a synchronous belt (705); The guide assembly (3) comprises a guide plate (301), a movable frame (302) and a driven slide rail (3012); a guide rack plate (3011) is provided on one side of the guide plate (301); a guide motor (303) is provided on one side of the movable frame (302); a rotating shaft of the guide motor (303) passes through the movable frame (302) and is provided with a guide gear (3031); the guide gear (3031) and the guide rack plate (3011) are matched with each other; a slide groove (304) is provided on a side of the guide plate (301) away from the guide motor (303); a slideway (3041) is provided in the middle of the slide groove (304); a guide wheel (305) is movably connected inside the slide groove (304); a rotating shaft of the guide wheel (305) passes through the slideway (3041) and is fixedly connected to the movable frame (302); The cylinder (9) is fixedly connected to the second support plate (407); the positioning assembly (6), the feeding assembly (7) and the rotating assembly (8) are arranged at the telescopic end of the cylinder (9); and connecting legs (408) are arranged at both ends of the curved rail (401); The storage groove (5) is fixedly connected to the second support plate (407); a groove (501) is provided on one side of the storage groove (5); a temperature measuring tube is placed inside the storage groove (5); an electric multi-section telescopic rod (502) is provided on the side of the storage groove (5) away from the groove (501); the telescopic end of the electric multi-section telescopic rod (502) passes through the side of the storage groove (5) away from the groove (501) and is provided with a push plate; the positioning frame (601) is fixedly connected to the telescopic end of the cylinder (9); The cover plate (701) is internally rotatably connected to a driving shaft (703) and a driven shaft (704); the synchronous belt (705) is sleeved on the outside of the driving shaft (703) and the driven shaft (704); a feed motor (702) is provided at a position corresponding to the cover plate (701) and the driving shaft (703); a rotating shaft of the feed motor (702) passes through one side of the cover plate (701) and is fixedly connected to the driving shaft (703); and the cover plate (701) is fixedly connected to the telescopic end of the cylinder (9); The rotating assembly (8) comprises a supporting plate (801), wherein a driven gear (802) and a driving gear (803) are rotatably connected inside the supporting plate (801), wherein the driven gear (802) and the driving gear (803) are meshingly connected, a rotating motor (804) is provided at the bottom of the supporting plate (801), wherein a rotating shaft of the rotating motor (804) passes through the bottom of the supporting plate (801) and is fixedly connected to the driving gear (803), a vertical cylinder (805) is provided at the middle of the driven gear (802), an opening is provided on the supporting plate (801) at a position corresponding to the vertical cylinder (805), and the supporting plate (801) is fixedly connected to the telescopic end of the cylinder (9); The side plate (101) is movably embedded in one side of the model groove (1); a first torque sensor is provided on the rotating shaft of the feed motor (702); and a second torque sensor is provided on the rotating shaft of the rotating motor (804).

2. The temperature measuring tube arrangement device for temperature monitoring during freezing construction according to claim 1 is characterized in that: The angle motor (403) is arranged on a side of the first support plate (402) away from the curved rail (401); the angle guide wheel (405) is arranged on a side of the first support plate (402) close to the curved rail (401); the angle gear (4031) is matched with the curved rack plate (4011); a limit plate (404) is arranged on a side of the first support plate (402) close to the curved rail (401); the limit plate (404) is matched with the curved rail (401); the limit plate (404) is L-shaped; and an inner groove of the limit plate (404) is matched with the curved rail (401).

3. The temperature measuring tube arrangement device for temperature monitoring during freezing construction according to claim 1 is characterized in that: One of the connecting legs (408) is fixedly connected to the movable frame (302), and the other connecting leg (408) is movably connected to the driven slide rail (3012).

4. A testing method, wherein the temperature of the soil in the model tank is tested by using the temperature measuring tube arrangement device according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1, measuring points are arranged in the soil of the model trough (1), and according to the distribution of the measuring points, temperature measuring holes are opened in the soil in two directions parallel to and perpendicular to the freezing pipes using a drilling device, and the temperature measuring pipes and the temperature measuring holes are arranged correspondingly by using the cooperation of the guide assembly (3) and the angle adjustment assembly (4); S2. The measuring point area is provided with a temperature sensor buried in the soil and a temperature sensor placed in a temperature measuring tube. After the temperature measuring tube is arranged, the temperature sensor in the temperature measuring tube monitors the evolution of the temperature field in the freezing process of the soil in the model tank (1). The relationship between the indirect temperature measurement method through the temperature measuring tube and the direct temperature measurement method buried in the soil is studied and tested. S3. The materials of the temperature measuring tube are steel tube and clay tube respectively. The temperature measuring tube is treated by two methods: empty and filled with soil in the model tank (1). The temperature change process during the freezing process is tested respectively, and the measurement results of the temperature measuring tube are compared with the measurement results of the temperature sensor placed in the soil. S4, monitoring the temperature evolution of the soil in the model tank (1) by setting a plastic temperature measuring tube, and performing temperature measurement comparison to improve the temperature measurement method; S5. During the arrangement of the temperature measuring tube, the feed motor (702) and the rotation motor (804) are first controlled to work in coordination through the first torque sensor. When the torque value detected by the first torque sensor reaches a preset threshold value A, the feed motor (702) is turned off, the locking mechanism in the vertical cylinder (805) is locked and fixed with the vertical cylinder (805), the rotation motor (804) is started and drives the vertical cylinder (805) and the temperature measuring tube to rotate, and the soil distribution is adjusted by using the extrusion friction at the bottom of the temperature measuring tube. When the torque value is lower than A, the feed motor (702) continues to drive the temperature measuring tube to move to a preset position in the temperature measuring hole; A second torque sensor is provided on the rotating shaft of the rotating motor (804), and a torque threshold value B is preset to monitor the freezing state of the temperature measuring tube and the soil. When the torque value reaches B, the rotating motor (804) remains started and applies a rotational force, and at the same time, the electric telescopic rod (602) drives the clamping plate (603) to repeatedly knock and vibrate the temperature measuring tube until the torque value is lower than B and the temperature measuring tube is separated from the temperature measuring hole. Then, the rotating motor (804) is turned off, and the feed motor (702) is started. The temperature measuring tube is pulled out of the temperature measuring hole through the friction between the synchronous belt (705) and the temperature measuring tube, thereby completing the external pulling operation.

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