A measuring device for measuring the upward arching and subsidence of a roadbed in a horizontal hole

Abstract

The present invention provides a measuring device for measuring the heave and settlement of a roadbed in a horizontal hole, which includes a steel casing inserted into a horizontal hole in the lower soil layer of the roadbed. The bottom of the steel casing is provided with a plurality of measuring ports arranged at intervals along its length direction. A plurality of probe devices corresponding to the plurality of measuring ports are installed in the steel casing. The probe devices can detect the heave amount or settlement amount of the roadbed at the measuring ports through the measuring ports. In the present invention, the steel casing is inserted into the horizontal hole drilled in the lower soil layer of the roadbed, and the probe devices are also installed in the horizontal hole together with the steel casing. Measuring ports are left at the bottom of the steel casing, which facilitates the probe devices to measure the heave or settlement of the external rock mass through the measuring ports. The measuring device of the present invention is buried in the horizontal hole of the lower soil layer of the roadbed, has little influence on the excavation and filling work above the measuring position, and can realize the real-time monitoring of the heave and settlement of the lower roadbed caused by the filling and excavation work above.

Description

Technical Field

[0001] The invention belongs to the technical field of roadbed deformation detection, and in particular relates to a measuring device for measuring the arching and sinking of roadbed in a horizontal hole. Background Art

[0002] At present, the arching or sinking of the roadbed has always been a problem that plagues transportation engineering construction. Since 2015, the track elevation arching phenomenon has continued to occur in multiple roadbed sections of high-speed railways, and the expansion and deformation of these roadbed sections with arching phenomenon are still developing. The arching amount of the turnout in the most serious section has exceeded 100mm, seriously affecting the normal operation of the train. In addition, the high-speed railway has a high operating speed and high requirements for line smoothness, and its roadbed deformation requirements are also more stringent. At the same time, how to measure the arching and sinking of the roadbed in the horizontal hole has always been a technical difficulty.

[0003] CN110485399A discloses a device for measuring the internal settlement deformation of a roadbed, which uses a telescopic member and a displacement plate. When the roadbed settles, the displacement plate at the upper end will be displaced. The telescopic member provides a guide for the displacement plate to move, and provides space and guidance for the connecting rope to move with the displacement plate. Through the cooperation of the lead-out pipe, the telescopic member, and the seeding block, the internal deformation of the roadbed is characterized by the rise and fall of the connecting rope extending out of one end of the lead-out pipe, thereby realizing indirect measurement of the roadbed deformation. The above technical solution installs the telescopic member, the three-way component, and the lead-out pipe on the roadbed, which affects the excavation and filling work above the roadbed. Summary of the invention

[0004] The present invention aims to solve the technical problems existing in the prior art. The purpose of the present invention is to provide a measuring device for measuring the uplift and downlift of roadbed in a horizontal hole.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a measuring device for measuring the arch and sinking of roadbed in a horizontal hole, comprising a steel casing inserted into a horizontal hole in the lower soil layer of the roadbed, the bottom of the steel casing having a plurality of measuring ports arranged at intervals along its length direction, a plurality of probe devices corresponding to the plurality of measuring ports installed in the steel casing, the probe devices being able to detect the amount of arch or sinking of the roadbed at the measuring ports through the measuring ports.

[0006] In the above technical solution, the steel casing is inserted into the horizontal hole drilled in the lower soil of the roadbed, and the probe device is also installed in the horizontal hole together with the steel casing. A measuring port is left at the bottom of the steel casing, so that the probe device can measure the arch or sinking of the external rock mass through the measuring port. The measuring device of the present invention is buried in the horizontal hole of the lower soil of the roadbed, which has little effect on the excavation and filling work above the measuring position, and can realize real-time monitoring of the arch and sinking of the lower roadbed caused by the upper filling and excavation work.

[0007] In a preferred embodiment of the present invention, a plurality of probe devices are installed on a connecting plate, and the connecting plate is connected to a conveying device for conveying it into the inside of the steel casing.

[0008] In the above technical solution, a plurality of probe devices are installed on the connecting plate, which facilitates feeding a plurality of probe devices into the steel casing together through the conveying device; moreover, a plurality of probe devices are installed on the connecting plate instead of being connected by wires / cords, thereby avoiding the rotation of the probe devices in the direction perpendicular to the length of the steel casing.

[0009] In a preferred embodiment of the present invention, the conveying device includes a runner rotatably installed inside the steel casing and a conveying chain wound around and connected to the runner, and the connecting plate is fixedly connected to the conveying chain. By pulling the conveying chain, the connecting plate can move along the length direction of the steel casing.

[0010] In the above technical solution, the conveying device uses the runner and the conveying chain to convey the connecting plate, and the runner and the conveying chain can be installed in the slender steel casing, making it simple and feasible to convey the probe device.

[0011] In a preferred embodiment of the present invention, the runner is a sprocket and the conveying chain is a chain meshing with the sprocket; or the runner is a pulley and the conveying chain is a belt connected to the pulley.

[0012] In a preferred embodiment of the present invention, the conveying chain is a bar-shaped chain, and the two ends of the bar-shaped chain away from the runner are free ends. Fixing devices for fixing the two free ends of the bar-shaped chain are connected to the inner wall of the steel casing; or the conveying chain is a ring-shaped chain, and the conveying device further includes a self-locking support wheel arranged away from the runner, and the ring-shaped chain is sleeved outside the runner and the support wheel at the same time.

[0013] In the above technical solution, two forms of the conveying chain are provided and can be selected according to the actual situation, and the position of the probe device can be fixed by fixing the conveying chain.

[0014] In another preferred embodiment of the present invention, the probe device includes a base fixedly connected to the connecting plate, a pulley installed on the base and capable of sliding on the inner wall of the steel casing, and a distance measuring probe installed on the base for measuring the upward arch or downward settlement of the roadbed. The signal output end of the distance measuring probe is connected to the input end of the controller.

[0015] In the above technical solution, when the conveying chain is pulled to feed the probe device into the inside of the steel casing, the pulley slides on the inner wall of the steel casing, which is conducive to feeding the probe device into the steel casing.

[0016] In another preferred embodiment of the present invention, a support ear is fixedly connected to each side of the base, and a pulley is rotatably connected to each support ear.

[0017] In the above technical solution, a pulley is provided on each side of the base, making the operation of the probe device in the steel casing more stable.

[0018] In another preferred embodiment of the present invention, two limiting blocks are fixedly connected to the inner wall of the steel casing and are respectively located above the two pulleys.

[0019] In the above technical solution, the two pulleys are restricted by the two limiting blocks and cannot move circumferentially in the steel casing, ensuring the circumferential position of the probe device.

[0020] In another preferred embodiment of the present invention, the ranging probe is a laser ranging probe or a contact type ranging probe; when the ranging probe is a contact type ranging probe, a support for adjusting the height is connected to the lower end of the base, and the contact type ranging probe is installed on the support.

[0021] In another preferred embodiment of the present invention, the probe device further includes a water immersion probe installed on the base, a drain pipe connected to a water pump is also installed in the steel casing, and the signal output end of the water immersion probe is connected to the enabling end of the water pump.

[0022] In the above technical solution, the water immersion probe is used to judge the water immersion and water accumulation positions and record the water immersion time. When there is water accumulation in the steel casing, the water pump starts and discharges the water accumulation in the steel casing through the drain pipe, enabling the measuring device to be used in soil layers with the risk of water immersion and water accumulation.

[0023] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0025] Figure 1 is a schematic diagram of the steel casing inserted into the subgrade lower layer soil body in the embodiment of the present application.

[0026] Figure 2 is a schematic structural diagram of a measuring device for measuring the arching and subsidence of the subgrade in a horizontal hole in the embodiment of the present application.

[0027] Figure 3 is Figure 2 the C-C cross-sectional schematic diagram in

[0028] The reference numerals in the accompanying drawings of the specification include: roadbed 10, lower soil mass 11, upper soil mass 12, steel casing 20, measurement port 21, limit block 22, probe device 30, base 31, ear 32, pulley 33, support 34, distance measurement probe 35, immersion probe 36, connecting plate 40, runner 51, conveyor chain 52, fixing device 60, drain pipe 70, upper fixing point A, and lower fixing point B. Detailed implementation manners

[0029] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "vertical", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0031] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, they can be mechanical connections or electrical connections, or the communication inside two elements. They can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0032] The present invention provides a measuring device for measuring the upheaval and subsidence of a roadbed in a horizontal hole, as Figure 1 and Figure 2 shown. In a preferred embodiment of the present invention, the measuring device includes a steel casing 20 inserted into a horizontal hole in the lower soil mass 11 of the roadbed 10. The bottom of the steel casing 20 has a plurality of measurement ports 21 arranged at intervals along its length direction. Figure 1 Only two measurement ports 21 are schematically shown in . In practice, the spacing and number of the measurement ports 21 should be set according to the length of the steel casing 20 and the detection points. A plurality of probe devices 30 corresponding to the plurality of measurement ports 21 are installed in the steel casing 20. One probe device 30 is correspondingly arranged at one measurement port 21. The probe device 30 can detect the upheaval amount or subsidence amount of the roadbed 10 at the measurement port 21 through the measurement port 21.

[0033] The steel casing 20 of the present invention is inserted into a horizontal hole drilled in the subgrade 10 in the lower layer of the soil mass 11. The probe device 30 is also installed in the horizontal hole together with the steel casing 20, which has little influence on the excavation and filling work above the measurement position. In practice, multiple measuring devices can be arranged in a network on the same plane. According to the actual situation, the length of the steel casing 20 can reach dozens to hundreds of meters. When the length of the steel casing 20 is short, the steel casing 20 will arch and sink together with the subgrade 10.

[0034] In another preferred embodiment of the present invention, multiple probe devices 30 are installed on a connecting plate 40, and the connecting plate 40 is connected with a conveying device for conveying it into the interior of the steel casing 20. Specifically, the conveying device includes a runner 51 rotatably installed in the steel casing 20 and a conveying chain 52 wound around the runner 51 and connected thereto. The inner end of the steel casing 20 is blocked, the runner 51 is arranged close to the inner end of the steel casing 20, and the runner 51 is connected with the steel casing 20 through a bracket. The connecting plate 40 is fixedly connected with the conveying chain 52. By pulling the conveying chain 52, the connecting plate 40 can move along the length direction of the steel casing 20. Thus, the probe device 30 is conveyed from outside the steel casing 20 to the measurement port 21 inside the steel casing 20 by moving the connecting plate 40.

[0035] In this embodiment, the runner 51 is a sprocket, and the conveying chain 52 is a chain meshing with the sprocket; or the runner 51 is a pulley, and the conveying chain 52 is a belt connected with the pulley. The conveying chain 52 is a strip-shaped chain. The two end portions of the strip-shaped chain far from the runner 51 are free ends. The two sides of the strip-shaped chain wound around the runner 51 are parallel to each other and extend along the length direction of the steel casing 20 to the outside of the steel casing 20. The connecting plate 40 is fixedly connected with one side below the conveying chain 52. A fixing device 60 for fixing the two free ends of the strip-shaped chain is connected to the inner wall of the steel casing 20. The fixing device 60 can be a fixing rope, a buckle or a fixing bracket.

[0036] As Figure 2 shown, the operator pulls one side above the conveying chain 52 to the left. Through the rotation of the runner 51, one side below the conveying chain 52 moves to the right, so that the probe device 30 moves into the interior of the steel casing 20. After the probe device 30 moves to the corresponding measurement port 21, the conveying chain 52 is tightened, and the conveying chain 52 is fixed at the upper fixing point A and the lower fixing point B with the fixing device 60, thereby realizing the fixing of the position of the probe device 30.

[0037] It should be noted that the conveying chain 52 can also be set as a loop chain. The conveying device further includes a self-locking support wheel arranged away from the runner 51. The support wheel is also connected to the steel sleeve 20 through a bracket. The loop chain is sleeved outside the runner 51 and the support wheel at the same time. After the probe device 30 moves to the measurement port 21, the support wheel is locked to prevent it from rotating, so as to fix the position of the probe device 30, or the conveying chain 52 is fixed by the fixing device 60 on the inner wall of the steel sleeve 20.

[0038] As Figure 3 shown, in another preferred embodiment of the present invention, the probe device 30 includes a base 31 fixedly connected to the connecting plate 40, a pulley 33 installed on the base 31 and capable of sliding on the inner wall of the steel sleeve 20, and a ranging probe 35 installed on the base 31 for measuring the upward arch or subsidence of the roadbed 10. The signal output end of the ranging probe 35 is connected to the input end of the controller. When pulling the conveying chain 52 to send the probe device 30 into the steel sleeve 20, the pulley 33 slides on the inner wall of the steel sleeve 20, which is beneficial to sending the probe device 30 into the steel sleeve 20.

[0039] In this embodiment, the ranging probe 35 is a laser ranging probe or a contact type ranging probe; when the ranging probe 35 is a contact type ranging probe, a support 34 for adjusting the height is connected to the lower end of the base 31, and the contact type ranging probe is installed on the support 34. When the ranging probe 35 is a laser ranging probe, the support 34 may not be provided.

[0040] As Figure 3 shown, in another preferred embodiment of the present invention, a lug 32 is fixedly connected to each side of the base 31, and a pulley 33 is rotatably connected to the lower end of each lug 32. Further preferably, two limiting blocks 22 are fixedly connected to the inner wall of the steel sleeve 20 and are respectively located above the two pulleys 33. The two pulleys 33 are restricted by the two limiting blocks 22 and cannot move circumferentially in the steel sleeve 20, ensuring the circumferential position of the probe device 30.

[0041] As Figure 2 shown, in another preferred embodiment of the present invention, the probe device 30 further includes a water immersion probe 36 installed on the base 31. A drain pipe 70 connected to a water pump is also installed in the steel sleeve 20. The signal output end of the water immersion probe 36 is connected to the enabling end of the water pump. Specifically, a drain pipe 70 can be arranged between 2-3 probe devices 30 inside the steel sleeve 20. The water immersion probe 36 is used to judge the water immersion and water accumulation positions and record the water immersion time. When there is water accumulation in the steel sleeve 20, the water pump is started to drain the water accumulation in the steel sleeve 20 through the drain pipe 70.

[0042] In the description of this specification, the descriptions referring to terms such as "preferred embodiment", "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0043] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A measuring device for measuring the arching and subsidence of a roadbed in a horizontal hole, characterized in that, It includes a steel casing inserted into a horizontal hole in the lower layer of the roadbed soil. The bottom of the steel casing has a plurality of measurement ports spaced along its length direction. A plurality of probe devices corresponding to the plurality of measurement ports are installed in the steel casing, and the probe devices can detect the uplift or subsidence amount of the roadbed at the measurement ports through the measurement ports. A plurality of the probe devices are installed on a connecting plate, and the connecting plate is connected to a conveying device for conveying it into the interior of the steel casing. The probe device includes a base fixedly connected to the connecting plate, a pulley installed on the base and capable of sliding on the inner wall of the steel casing, and a distance measuring probe installed on the base for measuring the uplift or subsidence amount of the roadbed. The signal output end of the distance measuring probe is connected to the input end of the controller. The distance measuring probe is a laser distance measuring probe or a contact type distance measuring probe. When the distance measuring probe is a contact type distance measuring probe, a support for adjusting the height is connected to the lower end of the base, and the contact type distance measuring probe is installed on the support. The probe device further includes a water immersion probe installed on the base. A drain pipe connected to a water pump is also installed in the steel casing, and the signal output end of the water immersion probe is connected to the enabling end of the water pump. The conveying device includes a runner rotatably installed in the steel casing and a conveying chain wound around the runner and connected thereto. The connecting plate is fixedly connected to the conveying chain. By pulling the conveying chain, the connecting plate can move along the length direction of the steel casing.

2. The measuring device for measuring the arching and settlement of the roadbed in a horizontal hole as described in claim 1, wherein, The runner is a sprocket, and the conveying chain is a chain meshing with the sprocket. Or the runner is a pulley, and the conveying chain is a belt connected to the pulley.

3. The measuring device for measuring the arching and subsidence of the roadbed in a horizontal hole as described in claim 1, characterized in that, The conveying chain is a strip-shaped chain. The two ends of the strip-shaped chain away from the runner are free ends, and fixing devices for fixing the two free ends of the strip-shaped chain are connected to the inner wall of the steel casing. Or the conveying chain is a ring-shaped chain, and the conveying device further includes a self-locking support wheel arranged away from the runner, and the ring-shaped chain is sleeved outside the runner and the support wheel at the same time.

4. The measuring device for measuring the upward arching and subsidence of the roadbed in a horizontal hole according to claim 1, characterized in that, One ear is fixedly connected to each side of the base, and one of the pulleys is rotatably connected to each ear.

5. The measuring device for measuring the arching and subsidence of the roadbed in a horizontal hole according to claim 4, characterized in that, Two limiting blocks are also fixedly connected to the inner wall of the steel casing and are respectively located above the two pulleys.

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