CN117928466A - Device and method for measuring deformation of well wall of well - Google Patents
Device and method for measuring deformation of well wall of well Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 claims description 24
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- 238000005259 measurement Methods 0.000 claims description 6
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Abstract
The invention discloses a device and a method for measuring deformation of a well wall of a well, and relates to the technical field of geotechnical engineering test, wherein the device comprises a well wall deformation attaching device and a vertical displacement monitoring device; the well wall deformation laminating device comprises a base and a plurality of bracket components; the bracket component comprises bracket legs, a connecting rod and a connecting platform; the bracket leg is provided with a first end, a second end and a rotating part, wherein the first end is in rotary connection with the connecting platform, the rotating part is in rotary connection with one end of the connecting rod, and the other end of the connecting rod is in rotary connection with the base; the connecting platform is arranged on the outer side wall of the base in a sliding manner along the vertical direction; the vertical displacement monitoring device is used for being fixedly arranged in a well, a plurality of through holes are formed in the vertical displacement monitoring device, a connecting piece is arranged in each through hole in a penetrating mode, the lower end of each connecting piece is fixedly connected with a connecting platform, and the axis of the base can be kept coincident with the axis of the well through each connecting piece. The problem of rely on the sensor to measure at present is solved, simple structure, stability are high.
Description
Technical Field
The invention relates to the technical field of geotechnical engineering test, in particular to a drilling well wall deformation measuring device and a measuring method thereof.
Background
Drilling deformation measurement is one of key technologies in the fields of geological exploration, engineering construction, geological disaster prediction and the like. In the drilling process, the real-time monitoring of the deformation of the drilling is of great importance to the next construction plan and the analysis of the drilling properties. For deep drilling, the device is in a complex environment, and has high requirements on a measuring device for deformation of the well wall of the drilling well.
The existing drilling deformation measuring device mainly depends on a sensor, but the performance of the sensor cannot be ensured under complex geological environments (such as high temperature and high pressure water-rich conditions). Based on the background, how to design a well wall deformation measuring device with simple structure and good stability under a complex geological environment is of great significance to the work in the related field.
Disclosure of Invention
The invention aims to provide a device and a method for measuring the deformation of a well wall of a well, which are used for solving the problems existing in the prior art and solving the problem of measuring by relying on a sensor at present, and have the advantages of simple structure and high stability.
In order to achieve the above object, the present invention provides the following solutions:
The invention provides a well wall deformation measuring device for a well, which comprises a well wall deformation attaching device and a vertical displacement monitoring device positioned above the well wall deformation attaching device; the well wall deformation attaching device comprises a base and a plurality of bracket components, wherein each bracket component is circumferentially distributed around the axis of the base; the bracket component comprises bracket legs, a connecting rod and a connecting platform; the support leg is provided with a first end, a second end and a rotating part positioned between the first end and the second end, the first end is rotationally connected with the connecting platform around a first axis, the rotating part is rotationally connected with one end of the connecting rod around a second axis, the other end of the connecting rod is rotationally connected with the base around a third axis, and the first axis, the second axis and the third axis are all parallel to each other and are all perpendicular to the vertical direction; the connecting platform is arranged on the outer side wall of the base in a sliding manner along the vertical direction; the vertical displacement monitoring device is used for being fixedly arranged in a well, a plurality of through holes are formed in the vertical displacement monitoring device, a connecting piece is arranged in each through hole in a penetrating mode, the lower end of each connecting piece is fixedly connected with one connecting platform, and each connecting piece can enable the axis of the base to be coincident with the axis of the well.
Preferably, the vertical displacement monitoring device comprises a signal collection body and a plurality of displacement meters, wherein the signal collection body is provided with a sealed accommodating cavity, each displacement meter is fixedly arranged in the accommodating cavity, a plurality of thick-wall cylinders are arranged on the signal collection body, each thick-wall cylinder penetrates through the signal collection body along the vertical direction, the cavity inside the thick-wall cylinder is formed into a perforation, the monitoring point of each displacement meter is communicated with the perforation in a sealing manner, and each displacement meter can monitor the moving distance of the connecting piece in the perforation in the vertical direction.
Preferably, the connecting piece is a rigid rod, one end of the rigid rod is fixedly connected with the connecting platform, and the other end of the rigid rod is arranged in the through hole in a penetrating way.
Preferably, the base comprises a middle rod and a base, the base is fixedly connected with the lower end of the middle rod, a plurality of guide rail grooves are formed in the side wall of the middle rod, each connecting platform is arranged in one guide rail groove in a sliding mode along the vertical direction, and the end portion of the connecting rod is connected with the base in a rotating mode around the third axis.
Preferably, the signal collection body has an elastic outer wall, and the signal collection body is capable of being secured within the well bore by the elastic outer wall.
Preferably, the device further comprises a data collector and a computer, wherein the data collector is in communication connection with each displacement meter, the data collector is in communication connection with the computer, and the computer calculates the radial deformation value of each support foot tail end monitoring point according to the data transmitted by the data collector.
Preferably, the wall of a well warp laminating device's material is alloy steel.
Preferably, the accommodating cavity comprises an inner cavity and an outer cavity, the inner cavity is provided with an inner cavity, the outer cavity is provided with an outer cavity, the inner cavity is fixedly arranged in the outer cavity, and each displacement meter is fixedly arranged in the inner cavity.
The invention also provides a measuring method based on the drilling well wall deformation measuring device, which comprises the following steps:
S1, assembling the well wall deformation attaching device, connecting the lower ends of the connecting pieces with corresponding connecting platforms, and respectively penetrating the upper ends of the connecting pieces into the through holes of the vertical displacement monitoring device;
S2, clamping the base through an inner-layer claw of a first claw on the hoisting equipment, clamping each connecting platform through an outer-layer claw of the first claw to enable each support leg to be in a contracted state, clamping the vertical displacement monitoring device through a second claw on the hoisting equipment, adjusting the distance between the well wall deformation attaching device and the vertical displacement monitoring device, simultaneously lowering the two devices to a well drilling inner-formulated measuring position, then releasing the outer-layer claw of the first claw to enable each support leg to be stretched and propped against the well wall of the well drilling, and then sequentially releasing the inner-layer claw and the second claw of the first claw.
Compared with the prior art, the invention has the following technical effects:
The device for measuring the deformation of the well wall of the well, provided by the invention, adopts the well wall deformation attaching device with a mechanical structure to realize the real-time monitoring of the deformation of the well wall of the well, the radial displacement of the well wall of the well is adopted to drive the support legs to generate transverse displacement, the transverse displacement is converted into the longitudinal displacement of the connecting platform through the connecting rod mechanism formed by the support legs and the connecting rods, and the vertical displacement data is monitored through the vertical displacement monitoring device.
Further, the vertical displacement monitoring device adopts the signal collection body with the sealed accommodating cavity for accommodating each displacement meter, thereby ensuring the environment of each displacement meter, avoiding the influence of complex address environment in the well to the vertical displacement monitoring device and ensuring the stable monitoring data of the vertical displacement monitoring device.
Furthermore, the connecting piece adopts the rigid rod, and because the vertical displacement monitoring device is fixed relative to the well wall of the well during use, the arrangement of the perforation and the rigid rod can ensure that the axis of the base and the axis of the well are kept in a coincident state, thereby realizing the stable and accurate monitoring of the offset data of each bracket foot relative to the center of the well wall of the well.
Further, the base adopts and comprises middle part pole and base two parts, sets up the guide rail groove on the middle part pole circumference lateral wall and is used for making the vertical removal of connecting platform, and the base can make things convenient for the connection and the rotation of connecting rod.
Furthermore, the signal collecting body with the elastic outer wall is adopted, and the signal collecting body and the well wall of the well are kept fixed in a manner of elastic extrusion or friction force between the side wall of the signal collecting body and the well wall of the well, and the fixing manner is simple and convenient; secondly, the signal collection body and the axis of the well drilling can be kept consistent through the mode, and further the axis of the base below the signal collection body and the axis of the well drilling are kept consistent, so that stable monitoring deformation data of each support leg are ensured.
Further, the data collector is used for collecting data monitored by each displacement meter, and each data is processed by the computer, so that the manual processing difficulty is reduced, the time is saved, and the deformation data corresponding to the well wall of the well is ensured to be output efficiently and directly.
Furthermore, the alloy steel is adopted, has the functions of high temperature resistance and corrosion resistance, and can ensure stable work in a complex drilling environment.
Further, the displacement meters are sealed and isolated in a double-layer sealing cavity mode, so that each displacement meter is ensured to be applicable to different complex environments, and the influence of the external complex environments is avoided.
The invention also provides a measuring method, firstly, the device is assembled, then the device is synchronously lowered by the hoisting equipment, the support legs receive the well wall deformation signals, the transverse displacement of the well wall deformation is converted into the vertical displacement of the connecting platform by the link mechanism formed by the support legs, the connecting rods and the connecting platform, each support leg is relatively independent, and the displacement change of each monitoring point correspondingly monitored at the tail end of the support leg can be independently used for data collection.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the whole structure of a borehole wall deformation measuring device provided by the invention;
FIG. 2 is a schematic structural view of a borehole wall deformation attaching device in a borehole wall deformation measuring device provided by the invention;
FIG. 3 is a schematic structural view of a base in the borehole wall deformation measuring device provided by the invention;
FIG. 4 is a schematic diagram of the connection structure of the support legs, the connecting rods and the connection platform in the drilling well wall deformation measuring device provided by the invention;
FIG. 5 is a schematic structural diagram of a vertical displacement monitoring device in a borehole wall deformation measuring device provided by the invention;
FIG. 6 is a graph of analysis of geometric relationships in a borehole wall deformation measuring device provided by the invention.
In the figure: 100-a borehole wall deformation measuring device;
10, a well wall deformation attaching device; 11-a middle rod; 111-a rail groove; 12-a base; 13-a bracket leg; 14-connecting rod; 15-connecting a platform; 151-communicating grooves; 152-a fixed rod; 153-limit sliding blocks;
20-a vertical displacement monitoring device; 21-a signal collection body; 211-accommodating cavities; 22-monitoring points of the displacement meter; 23-a thick-walled cylinder; 24-supporting rods;
30-connecting piece;
40-data transmission lines;
50-a data collector;
60-computer.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a device and a method for measuring deformation of a well wall of a well, which are used for solving the problems existing in the prior art and solving the problem of measuring by depending on a sensor at present, and have the advantages of simple structure and high stability.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
The embodiment provides a drilling well wall deformation measuring device 100, as shown in fig. 1-6, comprising a well wall deformation attaching device 10 and a vertical displacement monitoring device 20 positioned above the well wall deformation attaching device 10; the borehole wall deformation fitting device 10 comprises a base and a plurality of bracket components, wherein each bracket component is circumferentially distributed around the axis of the base; the bracket component comprises a bracket foot 13, a connecting rod 14 and a connecting platform 15; the bracket leg 13 has a first end, a second end and a rotating part between the first end and the second end, the first end is rotationally connected with the connecting platform 15 around a first axis, the rotating part is rotationally connected with one end of the connecting rod 14 around a second axis, the other end of the connecting rod 14 is rotationally connected with the base around a third axis, and the first axis, the second axis and the third axis are all parallel to each other and are all perpendicular to the vertical direction; the connecting platform 15 is arranged on the outer side wall of the base in a sliding manner along the vertical direction; the vertical displacement monitoring device 20 is used for being fixedly arranged in a well, a plurality of through holes are formed in the vertical displacement monitoring device 20, a connecting piece 30 is arranged in each through hole in a penetrating mode, the lower end of each connecting piece 30 is fixedly connected with a connecting platform 15, and each connecting piece 30 can enable the axis of a base to be coincident with the axis of the well.
The device 10 for laminating the deformation of the well wall of the well is simple in structure, high in stability, mechanical in connection of all parts, applicable to measurement in different environments, applicable to selection of different lengths of the support legs 13 and the like according to the field conditions of different wells, and flexible in installation.
Specifically, each support subassembly is around the axis circumference evenly distributed of base, and the quantity of support subassembly is no less than 3, and 4 as shown in fig. 2, and when the quantity of support subassembly is the more, the quantity of its corresponding monitoring point is the more, and specific quantity can be confirmed according to actual need and actual monitoring effect, can guarantee that wall of a well warp laminating device 10 is whole in the well drilling and the state that the wall of a well stably supported, can also realize monitoring required monitoring point.
Specifically, the first end of the support leg 13 may be rotatably connected to the connection platform 15, the rotating portion may be disposed in the middle of the support leg 13, and one end of the connecting rod 14 and the other end of the connecting rod 14 may be rotatably connected to the base 12 of the base by using pins.
Specifically, a vertical displacement monitoring device 20 is arranged at a position 1-2m above the well wall deformation attaching device 10.
In the alternative of this embodiment, as shown in fig. 1 and 5, preferably, the vertical displacement monitoring device 20 includes a signal collecting body 21 and a plurality of displacement meters, where the signal collecting body 21 has a sealed accommodating cavity 211, each displacement meter is fixedly arranged in the accommodating cavity 211, a plurality of thick-wall cylinders 23 are arranged on the signal collecting body 21, each thick-wall cylinder 23 penetrates through the signal collecting body 21 along the vertical direction, a perforation is formed in the cavity inside the thick-wall cylinder 23, the monitoring point 22 of each displacement meter is communicated with the perforation in a sealing manner, and each displacement meter can monitor the moving distance of the connecting piece 30 in the perforation in the vertical direction. The vertical displacement monitoring device 20 adopts the signal collecting body 21 with the sealed accommodating cavity 211 for accommodating each displacement meter, thereby ensuring the environment of each displacement meter, avoiding the influence of complex address environment in the well to the environment, and ensuring the stable monitoring data.
Specifically, the diameter of the signal collecting body 21 is the same as the diameter of the well, and the signal collecting body 21 is fixed at a certain position in the well by using the relative friction force between the signal collecting body 21 and the well so that the axis of the signal collecting body 21 is consistent with the axis of the well, and the diameter of the signal collecting body 21 can be slightly larger than the diameter of the well to ensure the fixing effect.
Specifically, to ensure the accuracy of the measurement data, the signal collecting body 21 is disposed at a position where the wall of the well is not deformed, so as to ensure that the axis of the middle rod 11 of the lower base is kept as consistent as possible with the axis before the well is not deformed.
Specifically, the thick-wall cylinder 23 may be fixed to the signal collecting body 21 through the support rod 24, or may be directly fixed to the signal collecting body 21 by using the thick-wall cylinder 23.
Specifically, be equipped with on the thick wall section of thick bamboo 23 with the mounting hole of perforation intercommunication, the monitoring point 22 of displacement meter indicates the monitoring end of displacement meter, and the monitoring end of displacement meter is sealed to be installed in corresponding mounting hole, can enough accomplish the sealed environment of displacement meter, can also make the monitoring end of displacement meter monitor the vertical displacement of the connecting piece 30 in the perforation.
In the alternative of this embodiment, preferably, the connecting member 30 is a rigid rod, one end of the rigid rod is fixedly connected to the connecting platform 15, and the other end of the rigid rod is disposed in the through hole in a penetrating manner. The connecting piece 30 adopts a rigid rod, and because the vertical displacement monitoring device 20 is kept fixed relative to the well wall of the well when in use, the arrangement of the perforation and the rigid rod can ensure that the axis of the base and the axis of the well are kept in a coincident state, thereby realizing the stable and accurate monitoring of the offset data of each bracket foot 13 relative to the center of the well wall of the well.
Specifically, instead of using a rigid rod, the connecting member 30 may also use a steel wire having a certain rigidity, and the connecting platform 15 is provided with a communicating groove 151 and a fixing rod 152 located in the communicating groove 151, where the fixing rod 152 is used to wind one end of the fixing steel wire.
In an alternative scheme of this embodiment, as shown in fig. 1 to 3, preferably, the base includes a middle rod 11 and a base 12, the base 12 is fixedly connected with the lower end of the middle rod 11, a plurality of guide rail grooves 111 are formed on the side wall of the middle rod 11, each connecting platform 15 is slidably disposed in one guide rail groove 111 along the vertical direction, and the end of the connecting rod 14 is rotatably connected with the base 12 around a third axis. The base is composed of a middle rod 11 and a base 12, a guide rail groove 111 is formed in the circumferential side wall of the middle rod 11 and used for enabling the connecting platform 15 to move vertically, and the base 12 can facilitate connection and rotation of the connecting rod 14.
Specifically, the middle rod 11 adopts a hollow structure, and reduces certain weight.
Specifically, the connection platform 15 is fixedly provided with the limit sliding block 153, the guide rail groove 111 on the middle rod 11 is a U-shaped groove with one end open, the open end can be plugged by the base 12, the limit sliding block 153 can only slide in the U-shaped groove and is not separated, the base 12 and the middle rod 11 are detachably connected, including but not limited to a threaded hole formed in the base 12, the bottom of the middle rod 11 is provided with external threads, the middle rod 11 and the base 12 are connected in a threaded mode, when the connection platform is assembled, the middle rod 11 and the base 12 are in a separated state, at the moment, the limit sliding block 153 of the connection platform 15 slides into the U-shaped groove through the opening of the U-shaped groove, then the base 12 and the middle rod 11 are connected to complete the plugging of the opening of each U-shaped groove on the middle rod 11 by the base 12, so that the connection platform 15 is not separated from the middle rod 11 under the condition that the base 12 and the middle rod 11 are kept connected.
In the alternative of this embodiment, it is preferable that the signal collecting body 21 has an elastic outer wall, and the signal collecting body 21 can be fixed in the well by the elastic outer wall. The signal collecting body 21 with the elastic outer wall is adopted, and the signal collecting body 21 and the well wall of the well are kept fixed in a manner of elastic extrusion or friction force between the side wall of the signal collecting body 21 and the well wall of the well, and the fixing manner is simple and convenient; secondly, the signal collecting body 21 and the axis of the well can be kept consistent in this way, so that the axis of the base below the signal collecting body 21 and the axis of the well are kept consistent, and stable monitoring deformation data of each bracket foot 13 are ensured.
In an alternative of this embodiment, as shown in fig. 1, preferably, the borehole wall deformation measuring device 100 further includes a data collector 50 and a computer 60, where the data collector 50 is communicatively connected to each displacement meter, the data collector 50 is communicatively connected to the computer 60, and the computer 60 calculates the radial deformation value of the monitoring point at the end of each support leg 13 according to the data transmitted by the data collector 50. The data collector 50 is used for collecting data monitored by each displacement meter, and the computer 60 is used for processing each data, so that the manual processing difficulty is reduced, the time is saved, and the high-efficiency direct output of deformation data corresponding to the well wall of the well is ensured.
Specifically, the data collector 50 is connected to each displacement meter via a data transmission line 40.
Specifically, radial displacement of the well wall drives the tail end of the support leg 13 to generate corresponding motion, the transverse displacement of the well wall deformation of the well drilling is converted into vertical displacement through a connecting rod 14 mechanism formed by the support leg 13, the connecting rod 14 and the connecting platforms 15, the vertical displacement of each connecting platform 15 on the middle rod 11 is measured, each displacement meter in the signal collecting device respectively monitors the movement data correspondingly, the data are transmitted into the data collector 50 through the data transmission line 40, and the computer 60 converts the deformation value of the well wall corresponding to the measuring point where each support leg 13 is located through the corresponding geometric relationship.
Specifically, the geometric formula between the distance d between the measuring point and the center of the circle after the well wall of the well is deformed and the rising distance a of the measured connecting platform 15 is as follows:
when D is less than D, i.e. the borehole wall is deformed inwardly,
When D is greater than D, i.e. the borehole wall is deformed outwardly,
Wherein D is expressed as the original radius of the borehole; a represents the measured lifting distance of the connection platform 15; l denotes the length of the bracket leg 13; d is the distance between the measuring point where the well wall is deformed and the circle center.
As shown in fig. 6, a represents the second end of the stand leg 13, B represents the first end of the stand leg 13, C represents the rotating portion of the stand leg 13, and H represents the length of the point B from the center of the circle when the distance between the point a of the stand leg 13 and the center of the circle is D.
When the support legs 13 are symmetrically arranged in an even number, the distances measured by the diagonal support legs 13 are added to obtain the diameter of the deformed well wall.
Specifically, when the length of the supporting leg is selected, it may be determined in such a manner that the ascending distance of the connecting member 30 is greater than the borehole wall deformation (i.e., the absolute value of the difference between D and D), and the value monitored by the displacement meter is equivalent to the amplified data corresponding to the borehole wall deformation.
In an alternative of this embodiment, the wall deformation attachment 10 is preferably made of alloy steel. The alloy steel is adopted, has the functions of high temperature resistance and corrosion resistance, and can ensure stable work in a complex drilling environment.
In an alternative of this embodiment, preferably, the accommodating cavity 211 includes an inner cavity and an outer cavity, the inner cavity has an inner cavity, the outer cavity has an outer cavity, the inner cavity is fixedly arranged in the outer cavity, and each displacement meter is fixedly arranged in the inner cavity. The displacement meters are sealed and isolated in a double-layer sealing cavity mode, so that each displacement meter is ensured to be applicable to different complex environments, and the influence of the external complex environments is avoided.
Specifically, the purpose of the double-layer sealing cavity is to form an external double-layer sealing wrapping effect on the displacement meter, and besides the structure, other existing double-layer sealing wrapping structures can be selected.
Example two
The present embodiment provides a measurement method of the borehole wall deformation measurement device 100 according to the first embodiment, including the following steps:
S1, assembling the well wall deformation attaching device 10, connecting the lower ends of the connecting pieces 30 with the corresponding connecting platforms 15, and respectively penetrating the upper ends of the connecting pieces 30 into the through holes of the vertical displacement monitoring device 20;
S2, clamping the base through the inner layer claw of the first claw on the lifting device, clamping each connecting platform 15 through the outer layer claw of the first claw, enabling each support leg 13 to be in a contracted state, clamping the vertical displacement monitoring device 20 through the second claw on the lifting device, adjusting the distance between the well wall deformation attaching device 10 and the vertical displacement monitoring device 20 (arranging the vertical displacement monitoring device 20 at the position 1-2m above the well wall deformation attaching device 10), simultaneously lowering the two to a well drilling inner formulated measuring position, then releasing the outer layer claw of the first claw, enabling each support leg 13 to be unfolded and propped against the well wall of the well, and then sequentially releasing the inner layer claw and the second claw of the first claw.
Specifically, before S1, a connection pin with a proper length, a size type of a displacement meter, and a connector 30 with a proper length are selected according to actual conditions such as drilling depth and well diameter, and the structures such as the sizes of the components are determined and assembled.
Specifically, during the assembly in S1, the vertical displacement monitoring device 20 is connected to the data collector 50 through the data transmission line 40, and both the data collector 50 and the computer 60 are disposed outside the well.
Specifically, during the measurement process, the well wall generates radial displacement to drive the support leg 13 to generate transverse displacement, the transverse displacement is converted into vertical displacement of the connection platform 15 through the support leg 13, the connection rod 14 and the connection platform 15, the vertical displacement of the connection piece 30 (such as a rigid rod) is caused, the displacement meter corresponding to the thick-wall cylinder 23 records the vertical displacement signal of the connection piece 30, the displacement data is transmitted into the data collector 50 through the data transmission line 40, the data is provided to the computer 60, and the radial deformation value of the well wall is obtained through calculating the displacement value through the geometric relationship.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (9)
1. A well wall deformation measuring device of well drilling, characterized by: the device comprises a well wall deformation attaching device and a vertical displacement monitoring device positioned above the well wall deformation attaching device;
The well wall deformation attaching device comprises a base and a plurality of bracket components, wherein each bracket component is circumferentially distributed around the axis of the base; the bracket component comprises bracket legs, a connecting rod and a connecting platform; the support leg is provided with a first end, a second end and a rotating part positioned between the first end and the second end, the first end is rotationally connected with the connecting platform around a first axis, the rotating part is rotationally connected with one end of the connecting rod around a second axis, the other end of the connecting rod is rotationally connected with the base around a third axis, and the first axis, the second axis and the third axis are all parallel to each other and are all perpendicular to the vertical direction; the connecting platform is arranged on the outer side wall of the base in a sliding manner along the vertical direction;
the vertical displacement monitoring device is used for being fixedly arranged in a well, a plurality of through holes are formed in the vertical displacement monitoring device, a connecting piece is arranged in each through hole in a penetrating mode, the lower end of each connecting piece is fixedly connected with one connecting platform, and each connecting piece can enable the axis of the base to be coincident with the axis of the well.
2. The borehole wall deformation measuring device according to claim 1, wherein: the vertical displacement monitoring device comprises a signal collection body and a plurality of displacement meters, wherein the signal collection body is provided with a sealed accommodating cavity, each displacement meter is fixedly arranged in the accommodating cavity, a plurality of thick-wall cylinders are arranged on the signal collection body, each thick-wall cylinder penetrates through the signal collection body along the vertical direction, the cavity inside the thick-wall cylinder forms a perforation, monitoring points of each displacement meter are communicated with the perforation in a sealing manner, and each displacement meter can monitor the moving distance of a connecting piece in the perforation in the vertical direction.
3. The borehole wall deformation measuring device according to claim 1, wherein: the connecting piece is a rigid rod, one end of the rigid rod is fixedly connected with the connecting platform, and the other end of the rigid rod is arranged in the through hole in a penetrating mode.
4. The borehole wall deformation measuring device according to claim 1, wherein: the base comprises a middle rod and a base, the base is fixedly connected with the lower end of the middle rod, a plurality of guide rail grooves are formed in the side wall of the middle rod, each connecting platform is arranged in one guide rail groove in a sliding mode along the vertical direction, and the end portion of the connecting rod is connected with the base in a rotating mode around a third axis.
5. The borehole wall deformation measuring device according to claim 2, wherein: the signal collection body has an elastic outer wall, and the signal collection body can be secured in the well through the elastic outer wall.
6. The borehole wall deformation measuring device according to claim 2, wherein: the device comprises a displacement meter, a data collector and a computer, wherein the data collector is in communication connection with each displacement meter, the data collector is in communication connection with the computer, and the computer calculates the radial deformation value of each support foot tail end monitoring point according to data transmitted by the data collector.
7. The borehole wall deformation measuring device according to claim 1, wherein: the wall of a well warp laminating device's material is alloy steel.
8. The borehole wall deformation measuring device according to claim 2, wherein: the accommodating cavity comprises an inner cavity and an outer cavity, the inner cavity is internally provided with an inner cavity, the outer cavity is internally provided with an outer cavity, the inner cavity is fixedly arranged in the outer cavity, and each displacement meter is fixedly arranged in the inner cavity.
9. A measurement method based on the borehole wall deformation measurement device according to any one of claims 1 to 8, characterized in that: the method comprises the following steps:
S1, assembling the well wall deformation attaching device, connecting the lower ends of the connecting pieces with corresponding connecting platforms, and respectively penetrating the upper ends of the connecting pieces into the through holes of the vertical displacement monitoring device;
S2, clamping the base through an inner-layer claw of a first claw on the hoisting equipment, clamping each connecting platform through an outer-layer claw of the first claw to enable each support leg to be in a contracted state, clamping the vertical displacement monitoring device through a second claw on the hoisting equipment, adjusting the distance between the well wall deformation attaching device and the vertical displacement monitoring device, simultaneously lowering the two devices to a well drilling inner-formulated measuring position, then releasing the outer-layer claw of the first claw to enable each support leg to be stretched and propped against the well wall of the well drilling, and then sequentially releasing the inner-layer claw and the second claw of the first claw.
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