Multi-stratum integrated layered settlement monitor and monitoring method

Abstract

The embodiment of the invention relates to the field of rock-soil settlement monitoring, in particular to a multi-stratum integrated layered settlement monitor and a monitoring method. The multi-stratum integrated layered settlement monitor comprises a settlement pipe and a settlement magnetic ring, the settlement magnetic ring comprises an outer magnetic ring and an inner magnetic ring arranged on the outer side of the settlement pipe in a sleeving mode, and a supporting rod is arranged at the bottom of the inner magnetic ring and used for containing the outer magnetic ring; a plurality of transmission grooves parallel to the tangential direction of a certain ring body are formed in the outer magnetic ring, and one end of each transmission groove penetrates through the outer magnetic ring; a fixing needle is arranged in each transmission groove, and one end of each fixing needle is sleeved with a first spring used for ejecting the corresponding fixing needle out of the corresponding transmission groove; the invention further provides a monitoring method. The monitoring method comprises the multi-stratum integrated layered settlement monitor. According to the embodiment, the defect that an existing layered settlement monitor cannot be used for monitoring deep hard rocks is overcome, and compared with a traditional bed rock mark and a layered mark, the drilling cost is greatly saved, stability and compatibility are improved, and the application range of strata is widened.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of geotechnical settlement monitoring, and particularly to a multi-stratum integrated layer settlement monitor and a monitoring method. Background Art

[0002] The traditional ground settlement monitoring layer mark is mainly composed of a bedrock mark and a layer mark. The bedrock mark is a special monitoring point buried on the underground intact bedrock through drilling. That is, the marking point led from the underground bedrock mark to the ground surface is the starting point or elevation control point for the leveling measurement of ground settlement. The layer mark is a special monitoring point buried in soil layers at different depths underground through drilling according to the properties of the soil layers. The marking point leads directly to the ground surface and rises and falls with the compression and expansion of the soil layer, so that the total settlement amount or total rebound amount from this point to the ground can be monitored. Usually, in order to accurately judge the settlement conditions of soil layers at different depths, multiple drillings are usually required to set multiple layer marks.

[0003] Subsequently, layer settlement monitors appeared on the market, which can realize layer settlement monitoring at different depths in a single borehole. The settlement magnetic ring is fixed on the settlement pipe by a paper tape. After the paper tape breaks when encountering water in the borehole, the anchoring iron sheet of the settlement magnetic ring pops open and embeds into the soil body. However, when the groundwater level is relatively high, the paper tape breaks in advance before the settlement magnetic ring reaches the designated position, resulting in difficulty in fixing the magnetic ring to the preset position. Subsequent patent documents have made improvements to this layer settlement monitor. For example, Chinese Patent Document CN218329901U discloses a layer settlement pipe structure and a layer settlement monitor. The layer settlement pipe structure includes a settlement pipe body and a connecting piece; the settlement pipe body extends along the vertical direction, and the settlement magnetic ring can be sleeved on the settlement pipe body; wherein, a clamping member is arranged on the outer side wall of the settlement pipe body, the settlement magnetic ring can abut against the lower end of the clamping member, and the clamping member is integrally formed with the settlement pipe body; both ends of the connecting piece along the vertical direction can be connected to the settlement pipe body. The implementation case provided in this patent document is only applicable to shallow soft soil bodies and cannot generate position changes synchronously with the strata; Chinese Patent Document CN219347730U discloses a layer settlement monitor, including an installation conduit with an axially communicating inner cavity; a plurality of layer settlement monitoring marks, sleeved on the installation conduit and arranged at intervals along the axial direction of the installation conduit, and each layer settlement monitoring mark is respectively provided with an electronic tag; a probe assembly capable of reading and writing the electronic tag, moving in the inner cavity. In the implementation case provided in this patent document, elastic grab hooks are used for limit fixing, and the stability is poor. It is only applicable to shallow soft soil bodies. In deep geotechnical bodies, due to the hardness of the rock, it is difficult for the anchoring iron sheet to be inserted, and the settlement magnetic ring cannot be effectively fixed. Summary of the Invention

[0004] The elastic force of the anchoring iron sheets configured in the current layer settlement monitor is weak, and the stability is poor. It is only applicable to shallow soft soil bodies. In deep rock and soil bodies, due to the hardness of the rocks, it is difficult for the anchoring iron sheets to be inserted, and the settlement magnetic rings cannot be effectively fixed.

[0005] To solve the above problems, the purpose of the embodiments of the present application is to provide a multi-stratum integrated layer settlement monitor, which includes a settlement pipe and a settlement magnetic ring. The settlement magnetic ring includes an outer magnetic ring and an inner magnetic ring sleeved outside the settlement pipe. A support rod is arranged at the bottom of the inner magnetic ring for placing the outer magnetic ring; a plurality of transmission grooves parallel to the tangential direction of a certain ring body are arranged in the outer magnetic ring, and one end of the transmission groove penetrates through the outer magnetic ring; a fixing needle is arranged in each transmission groove, and a first spring for ejecting the fixing needle out of the transmission groove is sleeved at one end of the fixing needle.

[0006] The embodiments of the present application further include a monitoring method, which includes the above-mentioned multi-stratum integrated layer settlement monitor.

[0007] The purpose of the embodiments of the present application is to provide a multi-stratum integrated layer settlement monitor and a monitoring method, which overcome the disadvantage that the current layer settlement monitor cannot be used for monitoring deep hard rocks. Compared with traditional bedrock marks and layer marks, it greatly saves the drilling cost, improves the stability and compatibility, and expands the application range of strata.

[0008] In some embodiments, a transmission device is further arranged in each transmission groove, and the transmission device is connected to the first spring.

[0009] In some embodiments, each transmission device further includes a first protrusion extending out of the inner side of the outer magnetic ring.

[0010] In some embodiments, a control device is further included, and the control device controls the rotation of the settlement pipe, and the inner magnetic ring rotates along with the rotation of the settlement pipe.

[0011] In some embodiments, second protrusions corresponding to the first protrusions one by one are arranged on the outer side of the inner magnetic ring. When the inner magnetic ring rotates, the second protrusions drive the transmission device to slide in the transmission groove through the first protrusions.

[0012] In some embodiments, a limiting groove connected to each transmission groove is further arranged in the outer magnetic ring, and a limiting component is arranged in each limiting groove to limit the movement of the fixing needle by clamping the annular protrusion on the fixing needle. The limiting component is connected to the outer magnetic ring through a second spring.

[0013] In some embodiments, the transmission device is rotatably connected to the limiting component, and when the transmission device slides in the transmission groove, it drives the limiting component to rotate.

[0014] In some embodiments, one end of the fixing needle is set to be conical, and the conical end of the fixing needle faces one end of the transmission groove penetrating the outer magnetic ring. A first spring is sleeved on the other end of the fixing needle.

[0015] In some embodiments, a plurality of support rods are provided, and each support rod is connected to the bottom of the inner magnetic ring through a rotating member. When the inner magnetic ring rotates, the rotating member drives the support rod to retract to directly below the bottom of the inner magnetic ring or extend out from directly below the bottom of the inner magnetic ring for placing the outer magnetic ring.

[0016] In some embodiments, adopting the above-mentioned multi-layer integrated layered settlement monitor, the following steps are included: S1: Control the rotation of the inner magnetic ring to extend the support rod, and place the outer magnetic ring on the support rod; S2: Sleeve the inner magnetic ring on the settlement pipe; S3: Place the settlement pipe into the drilling well, and lower the settlement magnetic ring to the formation at the predicted depth; S4: Control the rotation of the inner magnetic ring, so that the second protrusion drives the transmission device to slide in the transmission groove through the first protrusion, causing the first spring to undergo elastic deformation; at the same time, the transmission device drives the limiting member to rotate, so that the movement of the fixing needle is no longer restricted by the limiting member; the first spring shoots the fixing needle out of the transmission groove where it is located, and the conical end pierces into the well wall to fix the outer magnetic ring at the formation at its depth; S5: Continue to control the rotation of the inner magnetic ring to retract the support rod to directly below the bottom of the inner magnetic ring, and the outer magnetic ring is disengaged from the axial limitation of the inner magnetic ring. The depth where the outer magnetic ring is located is the depth of the formation where it is located; S6: When conducting formation monitoring, lower the detection sensor from the upper port of the settlement pipe. When the sensor detects the outer magnetic ring, the sensor feeds back the depth information, and the operator records the depth of the outer magnetic ring at this time. Brief Description of the Drawings

[0017] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the drawings in the drawings do not constitute a proportional limitation.

[0018] Figure 1 It is a schematic side view structure diagram of the settlement magnetic ring in the multi-layer integrated layered settlement monitor provided by some embodiments of the present application; Figure 2 It is a schematic top view structure diagram of the settlement magnetic ring in the multi-layer integrated layered settlement monitor provided by some embodiments of the present application; Figure 3It is a schematic upward view structure of a settlement magnetic ring in a multi-layer integrated hierarchical settlement monitor provided by some embodiments of the present application; Figure 4 It is a schematic downward view structure of the settlement magnetic ring in the multi-layer integrated hierarchical settlement monitor provided by some embodiments of the present application after the fixing pins are ejected; Figure 5 It is a schematic upward view structure of the settlement magnetic ring in the multi-layer integrated hierarchical settlement monitor provided by some embodiments of the present application after the fixing pins are ejected.

[0019] Explanation of reference numerals: 1 - inner magnetic ring; 2 - outer magnetic ring; 3 - fixing pin; 4 - first spring; 5 - transmission device; 6 - limiting component; 7 - second spring; 8 - support rod; 9 - rotating component; 31 - annular protrusion. Detailed Description of the Invention

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will elaborate on various embodiments of the present application in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that in various embodiments of the present application, many technical details are provided to help readers better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can still be implemented. The division of the following embodiments is for convenience of description and should not constitute any limitation on the specific implementation manners of the present application. The various embodiments can be combined and cross-referenced with each other on the premise of no contradiction.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above accompanying drawings are intended to cover non-exclusive inclusion.

[0022] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity, specific order, or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0023] In the description of the embodiments of the present application, unless otherwise clearly defined and limited, technical terms such as "installation", "connection", and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0024] Referring to Figures 1 to 5 , the embodiments of the present application provide the following technical solutions: As Figures 1-3 shown, the multi-layer integrated stratified settlement monitor includes a settlement tube and settlement magnetic rings. The settlement magnetic rings include an outer magnetic ring 2 and an inner magnetic ring 1 sleeved outside the settlement tube. Three support rods 8 are provided at the bottom of the inner magnetic ring 1 for placing the outer magnetic ring 2; three transmission grooves parallel to the tangent direction of a certain ring body are provided inside the outer magnetic ring 2, and one end of the transmission groove penetrates the outer magnetic ring 2; a fixing pin 3 is provided in each transmission groove, and a first spring 4 for ejecting the fixing pin 3 out of the transmission groove is sleeved at one end of the fixing pin 3.

[0025] It should be noted that the three transmission grooves are on the same horizontal plane, and the included angle between any two of the three transmission grooves on the horizontal plane is 60°.

[0026] A transmission device 5 is also provided in each transmission groove, and the transmission device 5 is connected to the first spring 4.

[0027] Each transmission device 5 further includes a first protrusion extending out of the inner side of the outer magnetic ring 2.

[0028] A control device is further included. The control device controls the rotation of the settlement tube, and the inner magnetic ring 1 rotates as the settlement tube rotates.

[0029] Second protrusions corresponding to the first protrusions one by one are provided on the outer side of the inner magnetic ring 1. When the inner magnetic ring 1 rotates, the second protrusions drive the transmission device 5 to slide in the transmission groove through the first protrusions.

[0030] Limiting grooves connected to each transmission groove are further provided inside the outer magnetic ring 2. A limiting member 6 is provided in each limiting groove to limit the movement of the fixing pin 3 by clamping the annular protrusion 31 on the fixing pin 3. The limiting member 6 is connected to the outer magnetic ring 2 through a second spring.

[0031] The transmission device 5 is rotatably connected to the limiting member 6. When the transmission device 5 slides in the transmission groove, it drives the limiting member 6 to rotate.

[0032] One end of the fixing needle 3 is tapered, and the tapered end of the fixing needle 3 faces one end of the transmission groove penetrating the outer magnetic ring 2. A first spring 4 is sleeved on the other end of the fixing needle 3.

[0033] Each support rod 8 is connected to the bottom of the inner magnetic ring 1 through a rotating member 9. When the inner magnetic ring 1 rotates, the rotating member 9 drives the support rod 8 to retract below the bottom of the inner magnetic ring 1 or extend below the bottom of the inner magnetic ring 1 for placing the outer magnetic ring 2.

[0034] The layered settlement monitoring method included in this embodiment includes the above-mentioned multi-layer integrated layered settlement monitor, and the following steps are adopted: S1: Control the rotation of the inner magnetic ring 1 to extend the three support rods 8 and place the outer magnetic ring 2 on the support rods 8. S2: Sleeve the inner magnetic ring 1 on the settlement pipe. S3: Place the settlement pipe into the drilling well and lower the settlement magnetic ring to the formation at the predicted depth. S4: Control the rotation of the inner magnetic ring 1 so that the second protrusion drives the transmission device 5 to slide in the transmission groove through the first protrusion, causing the first spring 4 to undergo elastic deformation; at the same time, the transmission device 5 drives the limiting member 6 to rotate, so that the movement of the fixing needle 3 is no longer restricted by the limiting member 6; the first spring 4 shoots the fixing needle 3 out of the transmission groove where it is located, and the tapered end pierces into the well wall to fix the outer magnetic ring 2 at the formation at its depth. S5: Continue to control the rotation of the inner magnetic ring 1 to retract the support rod 8 below the bottom of the inner magnetic ring 1. The outer magnetic ring 2 is released from the axial limitation of the inner magnetic ring 1, and the depth where the outer magnetic ring 2 is located is the depth of the formation where it is located. S6: When performing formation monitoring, lower the detection sensor from the upper port of the settlement pipe. When the sensor detects the outer magnetic ring 2, the sensor feeds back the depth information, and the operator records the depth of the outer magnetic ring 2 at this time.

[0035] It should be noted that: in actual use, first calculate the depth of the formation to be pre-monitored, and then determine the position where the settlement magnetic ring needs to be fixed on the settlement pipe. Place the fixing needle 3 in the transmission groove, and the movement of the fixing needle 3 is restricted by the limiting member 6 to fix it in the transmission groove. At this time, both the first spring 4 and the second spring 7 are in a free state. Control the rotation of the inner magnetic ring 1 through the control device, and the rotating member 9 drives the support rod 8 to extend below the bottom of the inner magnetic ring 1, and place the outer magnetic ring 2 on the support rod 8.

[0036] Then sleeve the inner magnetic ring 1 on the settlement pipe, and then lower the settlement magnetic ring along the settlement pipe into the drilling well.

[0037] When the settlement magnetic ring is lowered to the formation at the predicted depth, the control device controls the rotation of the inner magnetic ring 1 so that the second protrusion contacts the first protrusion. The first protrusion drives the transmission device 5 to slide in the transmission groove, compressing the first spring 4. At the same time, the transmission device 5 drives the limiting component 6 to rotate, compressing the second spring 7. At this time, after the limiting component 6 rotates, it no longer jams the annular protrusion 31 on the fixed needle 3, and the movement of the fixed needle 3 is no longer restricted by the limiting component 6. The compressed first spring 4 releases its elastic potential energy, pushing the annular protrusion 31, causing the fixed needle 3 to shoot out from the transmission groove where it is located, and the conical end pierces into the wellbore wall, fixing the outer magnetic ring 2 at the formation at its depth.

[0038] As Figures 4-5 shown, after the three fixed needles 3 shoot out and pierce into the side wall of the drilling well, the outer magnetic ring 2 is fixed to the formation at this depth. When the inner magnetic ring 1 continues to rotate, after the rotating component 9 drives the support rod 8 to retract to directly below the bottom of the inner magnetic ring 1, the outer magnetic ring 2 is disengaged from the axial limitation of the inner magnetic ring 1 and the settlement pipe. Subsequently, if the formation at this depth changes, the axial position of the outer magnetic ring 2 on the settlement pipe will change accordingly. At this time, the installation of the outer magnetic ring 2 is completed; When conducting depth monitoring, the detection sensor is lowered from the upper port of the settlement pipe. When the sensor 2 detects the outer magnetic ring 2, the sensor feeds back the depth information, and the operator records the depth of the outer magnetic ring at this time; It should be noted that: The models of the first spring 4 and the second spring 7 include but are not limited to CSYWY - 16 - 70.

[0039] It should be noted that: Multiple settlement magnetic rings can be provided on the settlement pipe.

[0040] It should be noted that: The material of the settlement magnetic ring includes but is not limited to magnetic materials. The upper half magnetic ring of the outer magnetic ring 2 can be magnetically adsorbed to the lower half magnetic ring.

[0041] Through the rotation of the inner magnetic ring, this multi - formation integrated layered settlement monitor first fixes the outer magnetic ring to the formation where it is located, and then disengages from the axial limit of the settlement pipe, realizing synchronous changes with the formation where it is located. The models of the springs and the material of the fixed needles are determined according to the hardness of the formation soil to be monitored and can be replaced in a timely manner. It overcomes the drawback that the current layered settlement monitors cannot be used for monitoring deep hard rocks. Compared with traditional bedrock marks and layered marks, it improves compatibility and expands the application range of formations. The three fixed needles are in the same plane, improving the stability of the outer magnetic ring.

[0042] Those of ordinary skill in the art can understand that the above - mentioned embodiments are specific examples for implementing this application. In actual applications, various changes can be made in form and details without departing from the spirit and scope of this application.

Claims

1. A multi-stratum integrated layered settlement monitoring instrument, characterized in that: It includes a sedimentation tube and a sedimentation magnetic ring, the sedimentation magnetic ring includes an outer magnetic ring and an inner magnetic ring sleeved on the outside of the sedimentation tube, a support rod is arranged at the bottom of the inner magnetic ring for placing the outer magnetic ring; a plurality of transmission grooves parallel to the tangent direction of a certain ring body are arranged in the outer magnetic ring, one end of the transmission groove passes through the outer magnetic ring; a fixing needle is arranged in each of the transmission grooves, one end of the fixing needle is sleeved with a first spring for popping the fixing needle out of the transmission groove, and an annular protrusion is arranged on the fixing needle for limiting one end of the first spring.

2. The multi-stratum integrated layered settlement monitoring instrument according to claim 1, characterized in that: A transmission device is also arranged in each transmission groove, and the transmission device is connected to the first spring.

3. The multi-stratum integrated layered settlement monitoring instrument according to claim 2, characterized in that: Each of the transmission devices also includes a first protrusion extending from the inner side of the outer magnetic ring.

4. The multi-stratum integrated layered settlement monitoring instrument according to claim 3 is characterized in that: It also includes a control device, which controls the rotation of the sedimentation tube, and the inner magnetic ring rotates along with the rotation of the sedimentation tube.

5. The multi-stratum integrated layered settlement monitoring instrument according to claim 4, characterized in that: A second protrusion corresponding to the first protrusion is arranged on the outer side of the inner magnetic ring. When the inner magnetic ring rotates, the second protrusion drives the transmission device to slide in the transmission groove through the first protrusion.

6. The multi-stratum integrated layered settlement monitoring instrument according to claim 5, characterized in that: A limiting groove connected to each of the transmission grooves is also arranged in the outer magnetic ring. A limiting component is arranged in each of the limiting grooves to limit the movement of the fixed needle by clamping the annular protrusion on the fixed needle. The limiting component is connected to the outer magnetic ring through a second spring.

7. The multi-stratum integrated layered settlement monitoring instrument according to claim 6, characterized in that: The transmission device is rotatably connected to the limiting component. When the transmission device slides in the transmission groove, the limiting component is driven to rotate.

8. The multi-stratum integrated layered settlement monitoring instrument according to claim 7, characterized in that: One end of the fixing needle is set to be conical, the conical end of the fixing needle faces the end of the transmission groove that passes through the outer magnetic ring, and the other end of the fixing needle is sleeved with the first spring.

9. The multi-stratum integrated layered settlement monitoring instrument according to claim 8, characterized in that: There are multiple support rods, each of which is connected to the bottom of the inner magnetic ring through a rotating component. When the inner magnetic ring rotates, the rotating component drives the support rod to be retracted to the bottom of the inner magnetic ring or extended out from the bottom of the inner magnetic ring to place the outer magnetic ring.

10. A stratified settlement method, using the multi-stratum integrated stratified settlement monitoring instrument according to any one of claims 1 to 9, comprising the following steps: S1: Control the rotation of the inner magnetic ring to extend the support rod and place the outer magnetic ring on the support rod; S2: Sleeve the inner magnetic ring on the settling tube; S3: placing the settling tube into the well, and lowering the settling magnetic ring to the formation at the predicted depth; S4: Control the rotation of the inner magnetic ring so that the second protrusion drives the transmission device to slide in the transmission groove through the first protrusion, so that the first spring undergoes elastic deformation; at the same time, the transmission device drives the limiting component to rotate, so that the movement of the fixing needle is no longer restricted by the limiting component; the first spring ejects the fixing needle from the transmission groove where it is located, and one end of the cone penetrates into the well wall, so that the outer magnetic ring is fixed at the formation at its depth; S5: Continue to control the rotation of the inner magnetic ring, so that the support rod is retracted to the bottom of the inner magnetic ring, and the outer magnetic ring is separated from the axial limit of the inner magnetic ring. The depth of the outer magnetic ring is the depth of the formation where it is located; S6: When conducting formation monitoring, the detection sensor is lowered from the upper port of the settling tube. When the sensor detects the outer magnetic ring, the sensor feeds back depth information, and the operator records the depth of the outer magnetic ring at this time.

Images