Monitoring device for deep subsidence in reclamation area and installation method thereof

Abstract

The application discloses a kind of filling sea area deep settlement monitoring devices and installation method thereof, it is related to filling sea reclamation area settlement monitoring field, including the filling sea area deep settlement monitoring device including interval distribution in the filling sea area and all vertical setting in the first geologic body magnetic force telescopic component, perpendicularity monitoring component, water level monitoring pipe, settlement marker pole and pore water pressure monitoring component.The application solves the problem that the filling sea area deep settlement monitoring device has less types of geological data in the filling sea area, cannot comprehensively monitor the settlement of the geological body in the filling sea area, and the accuracy of the monitoring is low, realizes multidimensional monitoring of the geological body in the filling sea area, obtains various types of data, and comprehensively judges the settlement of the geological body in the filling sea area by analyzing various types of data, obtains more accurate monitoring results, and improves the accuracy of the filling sea area deep settlement monitoring.

Description

Technical Field

[0001] This invention relates to the field of subsidence monitoring technology in land reclamation areas, and particularly to a monitoring device and its installation method for deep subsidence in land reclamation areas. Background Technology

[0002] With the continuous development of land reclamation technology in my country, in order to make the design and calculation of land reclamation projects safer, more stable, and more reasonable, and to reduce blind spots, it is necessary to solve the key problem of quantitatively determining the deformation characteristics of deep soil. In coastal areas, deltaic alluvial plains, river and lake sedimentary areas, or mountain valleys, large areas of silt, silty soil, or soft clay are often formed, with a great thickness, sometimes even reaching tens of meters. Soft soil is characterized by high water content, large void ratio, strong compressibility, and low bearing capacity.

[0003] Currently, large-area soil filling or soft soil foundation settlement monitoring mainly relies on setting up settlement plates, connecting them to settlement pipes and extending them section by section to the soil filling construction surface, and using a level instrument for elevation measurement and monitoring. This requires setting up benchmark points outside the site, setting up settlement plates inside the site, and extending the settlement pipes section by section. The settlement pipes interfere with the soil filling, mechanical compaction and other construction operations, which can easily cause damage to the settlement pipes or insufficient compaction near the settlement point.

[0004] Current settlement monitoring methods only measure the height of markers on reclaimed areas using a level instrument, and obtain settlement data by comparing and analyzing the measurement data. However, the data obtained from height marker measurements can only observe the settlement of geological bodies in the reclaimed area from one dimension, and cannot comprehensively reflect the settlement of geological bodies in the reclaimed area, resulting in low accuracy in settlement monitoring. Therefore, existing deep settlement monitoring devices in reclaimed areas suffer from technical problems such as limited data on the types of geological bodies acquired, inability to comprehensively monitor the settlement of geological bodies in the reclaimed area, and low monitoring accuracy. Summary of the Invention

[0005] The main objective of this invention is to provide a monitoring device for deep subsidence in reclamation areas, which aims to solve the technical problem that existing monitoring devices for deep subsidence in reclamation areas have limited data on geological bodies in the reclamation area, resulting in low monitoring accuracy due to the inability to comprehensively monitor the subsidence of geological bodies in the reclamation area.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides a monitoring device for deep subsidence in a reclamation area, used to monitor the subsidence of a geological body formed by backfilling in the reclamation area. The geological body formed by backfilling in the reclamation area is defined as a first geological body, and the geological body below the seabed corresponding to the reclamation area before backfilling is defined as a second geological body. The monitoring device for deep subsidence in the reclamation area includes a magnetic expansion component, a verticality monitoring component, a water level monitoring pipe, a subsidence marker rod, and a pore water pressure monitoring component, all spaced apart in the reclamation area and vertically arranged within the first geological body. The top ends of the magnetic expansion component, the verticality monitoring component, the water level monitoring pipe, the subsidence marker rod, and the pore water pressure monitoring component all extend above the first geological body. The bottom ends of the magnetic expansion component and the verticality monitoring component both extend into the rock mass below the seabed corresponding to the reclamation area before backfilling. The bottom ends of the verticality monitoring component and the pore water pressure monitoring component extend into the second geological body.

[0008] Optionally, the magnetic telescopic assembly includes a first receiving tube and a plurality of magnets. The first receiving tube is vertically installed in the first geological body, with the top end of the first receiving tube extending above the first geological body and the bottom end of the first receiving tube extending into the rock mass below the seabed corresponding to the reclamation area before backfilling. The plurality of magnets are vertically spaced along the outside of the first receiving tube.

[0009] Optionally, the verticality monitoring component includes a second receiving tube and a tilt sensor. The second receiving tube is installed in the first geological body, with the top end of the second receiving tube extending above the first geological body and the bottom end extending into the rock mass below the seabed corresponding to the reclamation area before backfilling. The tilt sensor is disposed inside the second receiving tube.

[0010] Optionally, the water level monitoring pipe includes a seepage section and a sealing section, and multiple through holes are formed at intervals on the pipe wall of the seepage section along the direction in which the water level monitoring pipe extends.

[0011] Optionally, a filter screen is wrapped around the outside of the sealing section.

[0012] Optionally, a vertically extending filter cavity is formed within the first geological body, and the water level monitoring pipe is vertically disposed within the filter cavity and forms an annular gap with the cavity wall of the filter cavity, the annular gap being filled with fine aggregate.

[0013] Optionally, the pore water pressure monitoring assembly includes a pore water pressure monitor and a monitoring cylinder. The monitoring cylinder is vertically disposed within the first geological body, with its top end extending above the first geological body and its bottom end extending into the second geological body. The pore water pressure monitor is installed inside the monitoring cylinder.

[0014] Optionally, the monitoring cylinder includes a first filling section, a monitoring section, and a second filling section distributed sequentially from top to bottom. The first filling section, the monitoring section, and the second filling section are all located within the second geological body. The monitoring section is filled with bentonite particles, and the pore water pressure monitor is embedded within the bentonite particles. The first filling section and the second filling section are filled with concrete. A data receiver is installed on the top of the monitoring cylinder, and the data receiver is electrically connected to the pore water pressure monitor.

[0015] Optionally, the magnetic telescopic component and the verticality monitoring component are both fitted with concrete casings on the outer sides of the portions located within and below the first geological body.

[0016] Secondly, the present invention provides a method for installing a monitoring device for deep subsidence in a reclamation area, for installing the monitoring device for deep subsidence in a reclamation area as described above, the method comprising the following steps:

[0017] In the reclaimed area, the geological body is backfilled to a first preset height;

[0018] After a preset time interval, the magnetic expansion component, the verticality monitoring component, and the pore water pressure monitoring component are installed in the reclamation area; wherein, the bottom of the magnetic expansion component and the bottom of the verticality monitoring component are inserted into the rock mass below the seabed corresponding to the reclamation area before backfilling; the bottom of the pore water pressure monitoring component is inserted into a second geological mass;

[0019] Continue backfilling the geological body in the reclamation area until the reclamation area reaches the second preset height, then install the settlement marker pole;

[0020] Continue backfilling the geological body in the reclamation area until the reclamation area reaches the third preset height, drill holes in the geological body formed by the backfilling, and install the water level monitoring pipe in the drilled holes;

[0021] Continue reclaiming the land in the reclamation area until the reclamation area reaches a fourth preset height, forming the first geological body. Complete the installation of the magnetic expansion component, verticality monitoring component, pore water pressure monitoring component, settlement marker rod, and water level monitoring pipe, wherein the top ends of the magnetic expansion component, verticality monitoring component, pore water pressure monitoring component, settlement marker rod, and water level monitoring pipe all extend above the first geological body.

[0022] The above-described one or more technical solutions provided by this invention can have the following advantages or at least achieve the following technical effects:

[0023] This invention improves monitoring accuracy by embedding magnetic expansion joints within a reclamation area. These joints are installed within and penetrate a first geological body, with their bottom ends extending into the rock mass below the seabed before reclamation. The magnetic expansion joints release a magnetic field, and by recording and analyzing changes in this field, the location of the joints within the first geological body can be determined. This location also helps determine the settlement of the first geological body, thus improving monitoring accuracy. Furthermore, a verticality monitoring unit is embedded within the first geological body, penetrating it and extending its bottom end into a second geological body. When the first geological body experiences settlement or slippage, the verticality monitoring unit tilts accordingly. Recording and analyzing the data from this unit provides a clearer understanding of the settlement and slippage conditions within the first geological body. Settlement marker poles are embedded within the first geological body, with their tips extending above the body. The poles are observed and data recorded daily using a level instrument, and the data is analyzed to determine the settlement status of the first geological body. Furthermore, water level monitoring pipes and pore water pressure monitoring components are embedded within the first geological body. The water level monitoring pipes monitor the groundwater level within the first geological body, and the pore water pressure monitoring components monitor the pore water pressure. The two sets of data are recorded and analyzed to determine the stability of the first geological body, control its settlement, and prevent excessive settlement. In essence, by monitoring and acquiring multiple data points—including the settlement depth, the degree of slippage within the first geological body, the groundwater level, and the pore water pressure—using magnetic expansion joints, verticality monitoring components, water level monitoring pipes, settlement marker poles, and pore water pressure monitoring components, and then comprehensively analyzing these data, the settlement status of the reclaimed area can be more accurately determined, improving the accuracy of settlement monitoring in reclaimed areas. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the plan layout of the monitoring device for deep subsidence in a reclamation area, as per the present invention, in a portion of the reclamation area.

[0026] Figure 2 This is a cross-sectional schematic diagram of the magnetic expansion assembly involved in the present invention;

[0027] Figure 3 This is a cross-sectional schematic diagram of the verticality monitoring component involved in the present invention;

[0028] Figure 4 This is a schematic cross-sectional view of the water level monitoring pipe involved in the present invention;

[0029] Figure 5 This is a cross-sectional schematic diagram of the settlement marker rod involved in the present invention;

[0030] Figure 6 This is a cross-sectional schematic diagram of the pore water pressure monitoring component involved in the present invention;

[0031] Figure 7 This is a flowchart illustrating the installation method of the monitoring device for deep subsidence in reclaimed areas according to the present invention.

[0032] Explanation of icon numbers:

[0033] 10 Magnetic expansion joint 40 Settlement marker pole 11 First Container 50 Pore ​​water pressure monitoring components 12 magnet 51 Pore ​​water pressure monitoring instrument 20 Verticality monitoring components 52 Monitoring tube 21 Second receiving tube 521 First fill segment 22 Tilt sensor 522 Monitoring section 30 Water level monitoring pipe 523 Second fill segment 31 seepage section 53 Data receiver 32 Sealing section 60 Concrete casing 33 Through hole 70 First geological body 34 Filter chamber 80 Second geological body

[0034] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0036] It should be noted that in the embodiments of the present invention, all directional indications (such as up, down, left, right, forward, backward, etc.) are only used to interpret a specific posture (as shown in the attached diagram). Figure 1 To be continued Figure 5The relative positions and movements of the components shown below are considered. If the specific posture changes, the directional indication will also change accordingly.

[0037] In this invention, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element. Furthermore, the meaning of "and / or" throughout the text includes three parallel options; for example, "A and / or B" includes option A, option B, or options where both A and B are satisfied.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements.

[0039] In this invention, if there are descriptions involving "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0040] In this invention, the use of suffixes such as "module," "component," "part," "unit," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" can be used interchangeably.

[0041] For those skilled in the art, the specific meanings of the above terms in this invention can be understood according to the specific circumstances. Furthermore, the technical solutions of the various embodiments can be combined with each other; however, this is based on the premise that those skilled in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0042] The inventive concept of the present invention will be further explained below with reference to some specific embodiments.

[0043] This invention proposes a monitoring device for deep settlement in reclamation areas, used to monitor the settlement of geological bodies formed by backfilling in the reclamation area. The geological bodies formed by backfilling in the reclamation area are defined as the first geological body 70, and the geological bodies below the seabed corresponding to the reclamation area before backfilling are defined as the second geological body 80. The monitoring device for deep settlement in reclamation areas includes magnetic telescopic components 10 spaced apart in the reclamation area and vertically installed within the first geological body 70, a verticality monitoring component 20, a water level monitoring pipe 30, and settlement markers. The rod 40 and the pore water pressure monitoring component 50 are provided, wherein the top of the magnetic expansion component 10, the top of the verticality monitoring component 20, the top of the water level monitoring pipe 30, the top of the settlement marker rod 40 and the top of the pore water pressure monitoring component 50 all extend above the first geological body 70, and the bottom of the magnetic expansion component 10 and the bottom of the verticality monitoring component 20 both extend into the rock mass below the seabed corresponding to the reclamation area before backfilling; the bottom of the pore water pressure monitoring component 50 extends into the second geological body 80.

[0044] Specifically, such as Figures 1 to 6 As shown, a magnetic expansion joint 10 is installed in the reclamation area. The magnetic expansion joint 10 is installed within and penetrates the first geological body 70, with its bottom end extending into the rock mass below the seabed corresponding to the area before backfilling. The magnetic expansion joint 10 releases a magnetic field. By recording and analyzing the changes in the magnetic field, the installation position of the magnetic expansion joint 10 within the first geological body 70 can be located. The settlement of the first geological body 70 can be determined by the installation position of the magnetic expansion joint 10 within the first geological body 70, thus improving the accuracy of monitoring. A verticality monitoring component 20 is also installed in the reclamation area. The verticality monitoring component 20 is installed within and penetrates the first geological body 70, with its bottom end extending into the rock mass below the seabed corresponding to the area before backfilling. A verticality monitoring component 20 is embedded within the first geological body 70. When the first geological body 70 experiences settlement or slippage, the verticality monitoring component 20 will tilt along with the movement of the first geological body 70. By recording and analyzing the data monitored by the verticality monitoring component 20, the settlement and slippage of the first geological body 70 can be obtained more clearly. A settlement marker rod 40 is embedded within the first geological body 70, with its top extending above the first geological body 70. The settlement marker rod 40 is observed daily using a level instrument, and the data is recorded and analyzed to obtain information on the settlement of the first geological body 70.

[0045] Furthermore, a water level monitoring pipe 30 and a pore water pressure monitoring component 50 are installed within the first geological body 70. The water level monitoring pipe 30 monitors the groundwater level within the first geological body 70, and the pore water pressure monitoring component 50 monitors the pore water pressure within the first geological body 70. The two sets of data are recorded and analyzed to determine the stability of the first geological body 70, control the settlement of the first geological body 70, and prevent the settlement height of the first geological body 70 from being too large.

[0046] Understandably, by using the magnetic expansion component 10, verticality monitoring component 20, water level monitoring pipe 30, settlement marker rod 40, and pore water pressure monitoring component 50 to monitor and obtain multiple data such as the settlement depth of the first geological body 70, the degree of slippage inside the first geological body 70, the groundwater height and pore water pressure inside the first geological body 70, and by comprehensively analyzing multiple data, the settlement situation of the reclamation area can be obtained more accurately, and the accuracy of monitoring the settlement of the reclamation area can be improved.

[0047] In one embodiment, the magnetic telescopic assembly 10 includes a first receiving tube 11 and a plurality of magnets 12. The first receiving tube 11 is vertically installed in the backfilled geological body. The top end of the first receiving tube 11 extends above the first geological body 70, and the bottom end of the first receiving tube 11 extends to the rock body below the seabed corresponding to the reclamation area before backfilling. The plurality of magnets 12 are vertically spaced along the outside of the tube wall of the first receiving tube 11.

[0048] Specifically, such as Figure 2 As shown, the first receiving pipe 11 vertically penetrates the first geological body 70 and extends into the rock mass below the seabed corresponding to the reclamation area before backfilling. Multiple magnets 12 are installed at intervals along the outer wall of the first receiving pipe 11. The multiple magnets 12 form a magnetic field along the first receiving pipe 11. By monitoring the changes in the magnetic field, the positional changes of the first receiving pipe 11 within the first geological body 70 can be obtained, thereby determining the settlement of the first geological body 70 and improving the accuracy of monitoring the settlement of the reclamation area.

[0049] In one embodiment, the verticality monitoring component 20 includes a second receiving tube 21 and an tilt sensor 22. The second receiving tube 21 is installed inside the first geological body 70. The top end of the second receiving tube 21 extends above the first geological body 70, and the bottom end of the second receiving tube 21 extends into the rock mass below the seabed corresponding to the reclamation area before backfilling. The tilt sensor 22 is disposed inside the second receiving tube 21.

[0050] Specifically, such as Figure 3As shown, the second receiving pipe 21 vertically penetrates the first geological body 70 and extends into the rock mass below the seabed corresponding to the reclamation area before backfilling. The tilt sensor 22 is installed inside the second receiving pipe 21. When the first geological body 70 settles or slides, the second receiving pipe 21 buried inside the first geological body 70 will tilt as the first geological body 70 moves. The data recorded by the tilt sensor 22 installed inside the second receiving pipe 21 will also change. By analyzing the data, the settlement and sliding of the first geological body 70 can be determined, thus improving the accuracy of monitoring the settlement of the reclamation area.

[0051] In one embodiment, the water level monitoring pipe 30 includes a seepage section 31 and a sealing section 32, and a plurality of through holes 33 are formed at intervals on the pipe wall of the seepage section 31 along the direction in which the water level monitoring pipe 30 extends.

[0052] Specifically, such as Figure 4 As shown, the water level monitoring pipe 30 is vertically buried in the first geological body 70. The water level monitoring pipe 30 includes a seepage section 31 and a sealing section 32. The sealing section 32 is located above the seepage section 31. Multiple through holes 33 are formed at intervals on the pipe wall of the seepage section 31 along the direction of extension of the water level monitoring pipe 30. Groundwater in the first geological body 70 seeps into the water level monitoring pipe 30 through the through holes 33. The water level is observed and recorded. By analyzing the impact of the groundwater level on the first geological body 70, the potential subsidence of the reclamation area can be monitored and judged in advance.

[0053] In one embodiment, a filter screen is wrapped around the outside of the sealing section 32.

[0054] Specifically, the filter screen wraps around the outside of the resealed section 32 and covers multiple through holes 33, so that when the groundwater seeps into the water level monitoring pipe 30, the mud and sand are filtered out first, preventing the water level monitoring pipe 30 from becoming clogged and improving its durability.

[0055] In one embodiment, a vertically extending filter chamber 34 is formed within the first geological body 70. A water level monitoring pipe 30 is vertically disposed within the filter chamber 34 and forms an annular gap with the cavity wall of the filter chamber 34. The annular gap is filled with fine aggregate.

[0056] Specifically, such as Figure 4 As shown, a vertically extending filter chamber 34 is excavated within the first geological body 70. A water level monitoring pipe 30 is vertically installed within the filter chamber 34 and forms an annular gap with the cavity wall of the filter chamber 34. Fine aggregate is filled in the annular gap. Before being filtered by the filter screen, the groundwater is first filtered through the fine aggregate in the filter chamber 34 to remove larger diameter impurities. Through double-layer filtration, the filtration effect is improved, and the filter screen can be effectively protected, thus improving durability.

[0057] In one embodiment, the pore water pressure monitoring assembly 50 includes a pore water pressure monitor 51 and a monitoring cylinder 52. The monitoring cylinder 52 is vertically disposed within a first geological body 70. The top end of the monitoring cylinder 52 extends above the first geological body 70, and the bottom end of the monitoring cylinder 52 extends into a second geological body 80. The pore water pressure monitor 51 is installed inside the monitoring cylinder 52.

[0058] Specifically, such as Figure 6 As shown, the monitoring cylinder 52 is vertically installed inside the first geological body 70. The top of the monitoring cylinder 52 extends above the first geological body 70, and the monitoring cylinder 52 penetrates the first geological body 70 and the bottom of the monitoring cylinder 52 extends into the second geological body 80. The pore water pressure monitoring instrument 51 is installed inside the monitoring cylinder 52 and located inside the second geological body 80. The pore water pressure monitoring instrument 51 monitors the pore water pressure in the second geological body 80 and records the parameters. By analyzing the parameters, the stability of the second geological body 80 is determined, and the possible settlement of the reclamation area can be monitored and judged in advance.

[0059] In one embodiment, the monitoring cylinder 52 includes a first filling section 521, a monitoring section 522, and a second filling section 523 arranged sequentially from top to bottom. The first filling section 521, the monitoring section 522, and the second filling section 523 are all located within the second geological body 80. The monitoring section 522 is filled with bentonite particles, and the pore water pressure monitor 51 is embedded in the bentonite particles. The first filling section 521 and the second filling section 523 are filled with concrete. A data receiver 53 is installed on the top of the monitoring cylinder 52, and the data receiver 53 is electrically connected to the pore water pressure monitor 51.

[0060] Specifically, such as Figure 6 As shown, the portion of the monitoring cylinder 52 located within the second geological body 80 includes a first filling section 521, a monitoring section 522, and a second filling section 523, arranged sequentially from top to bottom. The monitoring section 522 is filled with bentonite particles, while the first and second filling sections 521 and 523 are filled with concrete. A pore water pressure monitor 51 is embedded within the bentonite particles. Filling the monitoring section 522 with bentonite particles ensures the pore water pressure monitor 51 meets operational requirements. Simultaneously, the first and second filling sections 521 and 523 above and below the monitoring section 522 are filled with concrete, providing internal support for the monitoring cylinder 52, preventing deformation under pressure, protecting the pore water pressure monitor 51, and improving its durability. A data receiver 53 is installed at the top of the monitoring cylinder 52. The monitor is electrically connected to the pore water pressure monitor 51, and the pore water pressure monitor 51 transmits acquired monitoring data to the data receiver 53 for convenient data acquisition.

[0061] In one embodiment, the magnetic telescopic assembly 10 and the verticality monitoring assembly 20 are both fitted with concrete casings 60 on the outer sides of the portions located inside and below the first geological body 70.

[0062] Specifically, such as Figure 2 and Figure 3 As shown, a concrete casing 60 is formed by pouring concrete around the magnetic expansion joint 10 and the verticality monitoring component 20. The concrete casing 60 is fitted over the magnetic expansion joint 10 and the verticality monitoring component 20, and extends from the top of the first geological body 70 to the bottom of the corresponding magnetic expansion joint 10 and verticality monitoring component 20. The concrete casing 60 effectively protects the magnetic expansion joint 10 and the verticality monitoring component 20, preventing damage due to stress pressure inside the geological body and improving durability.

[0063] Furthermore, an installation method for a monitoring device for deep subsidence in a reclamation area, based on the same inventive concept, is provided for installing the aforementioned monitoring device for deep subsidence in a reclamation area, with reference to... Figure 7 , Figure 7 This is a flowchart illustrating the installation method of the monitoring device for deep subsidence in reclaimed areas according to the present invention.

[0064] In one implementation series, such as Figure 7 As shown, the installation method of the monitoring device for deep settlement in the reclaimed area includes the following steps:

[0065] Step S100: Backfill the geological body in the reclamation area to the first preset height;

[0066] In step S200, after a preset time interval, a magnetic expansion joint 10, a verticality monitoring joint 20, and a pore water pressure monitoring joint 50 are installed in the reclamation area; wherein, the bottom of the magnetic expansion joint 10 and the bottom of the verticality monitoring joint 20 are respectively inserted into the rock mass below the seabed corresponding to the reclamation area before backfilling; the bottom of the pore water pressure monitoring joint 50 is inserted into the second geological body 80.

[0067] Step S300: Continue backfilling the geological body in the reclamation area until the reclamation area reaches the second preset height, then install settlement marker poles 40;

[0068] Step S400: Continue backfilling the geological body in the reclamation area until the reclamation area reaches the third preset height. Drill holes in the geological body formed by backfilling and install water level monitoring pipes 30 in the drilled holes.

[0069] Step S500: Continue to reclaim the geological body in the reclamation area until the reclamation area reaches the fourth preset height, forming the first geological body 70. Complete the installation of the magnetic expansion component 10, verticality monitoring component 20, pore water pressure monitoring component 50, settlement marker rod 40 and water level monitoring pipe 30. The top ends of the magnetic expansion component 10, verticality monitoring component 20, pore water pressure monitoring component 50, settlement marker rod 40 and water level monitoring pipe 30 all extend above the first geological body 70.

[0070] Specifically, backfilling is carried out in the reclamation area. After backfilling to the first preset height, a 7-day interval is observed. Magnetic expansion joint 10, verticality monitoring component 20, and pore water pressure monitoring component 50 are then installed in the reclamation area. The bottoms of the magnetic expansion joint 10 and verticality monitoring component 20 are inserted into the rock mass below the seabed corresponding to the area before backfilling. Backfilling continues in the reclamation area. When backfilling reaches the second preset height, settlement marker poles 40 are installed, and the magnetic expansion joint 10, verticality monitoring component 20, and pore water pressure monitoring component 50 are installed up to the second preset height. Geological surveys are then conducted in the reclamation area. When the backfilling reaches the third preset height in the reclamation area, boreholes are drilled into the geological body formed by the backfilling in the reclamation area, and water level monitoring pipes 30, magnetic expansion components 10, verticality monitoring components 20, pore water pressure monitoring components 50, and settlement marker rods 40 are installed in the drilled holes to the third preset height; the backfilling of the geological body in the reclamation area continues until the reclamation area reaches the fourth preset height, and the magnetic expansion components 10, verticality monitoring components 20, pore water pressure monitoring components 50, settlement marker rods 40, and water level monitoring pipes 30 are installed to the fourth preset height and above, extending above the first geological body 70.

[0071] Furthermore, the fourth preset height is the target height for backfilling the reclamation area, and the fourth, third, second, and first preset heights are arranged sequentially from high to low. The magnetic expansion joint 10, verticality monitoring joint 20, and pore water pressure monitoring joint 50 extend below the first geological body 70, enabling monitoring of the settlement and slippage of the entire geological body from bottom to top, thus making the monitored data more accurate. When the geological body is backfilled to the third preset height, boreholes are drilled into the geological body formed by the backfilling in the reclamation area to facilitate the installation of the water level monitoring pipe 30. Fine aggregate can be filled between the boreholes of the water level monitoring pipe 30 for filtration, improving the durability of the water level monitoring pipe 30. Because the third height is relatively close to the fourth preset height, burying settlement marker rods 40 when backfilling to the third preset height is more economical and practical, while still fulfilling the marking function.

[0072] The specific structure of the monitoring device for deep subsidence in the reclamation area is as described in the above embodiments. Since the installation method of this monitoring device for deep subsidence in the reclamation area adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0073] It should be noted that the sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above embodiments are only optional embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made under the inventive concept of the present invention using the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are all included within the patent protection scope of the present invention.

Claims

1. A monitoring device for deep subsidence in a reclamation area, used to monitor the subsidence of geological bodies formed by backfilling in the reclamation area, characterized in that, The geological body formed by backfilling in the reclamation area is defined as the first geological body, and the geological body below the seabed corresponding to the reclamation area before backfilling is defined as the second geological body. The monitoring device for deep settlement in the reclamation area includes a magnetic expansion component, a verticality monitoring component, a water level monitoring pipe, a settlement marker rod, and a pore water pressure monitoring component, which are distributed at intervals in the reclamation area and are all vertically arranged in the first geological body. The top ends of the magnetic expansion component, the verticality monitoring component, the water level monitoring pipe, the settlement marker rod, and the pore water pressure monitoring component all extend above the first geological body, and the bottom ends of the magnetic expansion component and the verticality monitoring component both extend into the rock mass below the seabed corresponding to the reclamation area before backfilling. The bottom end of the pore water pressure monitoring component extends into the second geological body. The verticality monitoring component can tilt as the first geological body moves. The water level monitoring pipe is used to monitor the groundwater level in the first geological body, and the pore water pressure monitoring component is used to monitor the pore water pressure in the first geological body.

2. The monitoring device for deep subsidence in reclaimed areas as described in claim 1, characterized in that, The magnetic telescopic assembly includes a first receiving tube and a plurality of magnets. The first receiving tube is vertically installed in the first geological body. The top end of the first receiving tube extends above the first geological body, and the bottom end of the first receiving tube extends to the rock mass below the seabed corresponding to the reclamation area before backfilling. The plurality of magnets are vertically spaced along the outside of the first receiving tube.

3. The monitoring device for deep subsidence in reclaimed areas as described in claim 1, characterized in that, The verticality monitoring component includes a second receiving tube and a tilt sensor. The second receiving tube is installed in the first geological body. The top end of the second receiving tube extends above the first geological body, and the bottom end of the second receiving tube extends into the rock mass below the seabed corresponding to the reclamation area before backfilling. The tilt sensor is disposed inside the second receiving tube.

4. The monitoring device for deep subsidence in reclaimed areas as described in claim 1, characterized in that, The water level monitoring pipe includes a seepage section and a sealing section, and multiple through holes are formed at intervals on the pipe wall of the seepage section along the direction in which the water level monitoring pipe extends.

5. The monitoring device for deep subsidence in reclaimed areas as described in claim 4, characterized in that, The outer side of the sealed section is wrapped with a filter screen.

6. The monitoring device for deep subsidence in reclaimed areas as described in claim 4, characterized in that, A vertically extending water filtration chamber is formed inside the first geological body. The water level monitoring pipe is vertically installed inside the water filtration chamber and forms an annular gap with the wall of the water filtration chamber. The annular gap is filled with fine aggregate.

7. The monitoring device for deep subsidence in reclaimed areas as described in any one of claims 1 to 5, characterized in that, The pore water pressure monitoring assembly includes a pore water pressure monitor and a monitoring cylinder. The monitoring cylinder is vertically disposed within the first geological body, with its top end extending above the first geological body and its bottom end extending into the second geological body. The pore water pressure monitor is installed inside the monitoring cylinder.

8. The monitoring device for deep subsidence in reclaimed areas as described in claim 7, characterized in that, The monitoring cylinder includes a first filling section, a monitoring section, and a second filling section distributed sequentially from top to bottom. The first filling section, the monitoring section, and the second filling section are all located within the second geological body. The monitoring section is filled with bentonite particles, and the pore water pressure monitoring instrument is embedded within the bentonite particles. The first filling section and the second filling section are filled with concrete. A data receiver is installed on the top of the monitoring cylinder, and the data receiver is electrically connected to the pore water pressure monitoring instrument.

9. The monitoring device for deep subsidence in reclaimed areas as described in any one of claims 1 to 5, characterized in that, The magnetic expansion joint and the verticality monitoring joint are both fitted with concrete casings on the outer sides of the portions of the first geological body and the portions below the first geological body.

10. A method for installing a monitoring device for deep subsidence in a reclaimed area, characterized in that, For installing the monitoring device for deep settlement in reclaimed areas as described in any one of claims 1 to 9, the installation method of the monitoring device for deep settlement in reclaimed areas includes the following steps: In the reclaimed area, the geological body is backfilled to a first preset height; After a preset time interval, the magnetic expansion component, the verticality monitoring component, and the pore water pressure monitoring component are installed in the reclamation area; wherein, the bottom of the magnetic expansion component and the bottom of the verticality monitoring component are inserted into the rock mass below the seabed corresponding to the reclamation area before backfilling; the bottom of the pore water pressure monitoring component is inserted into a second geological mass; Continue backfilling the geological body in the reclamation area until the reclamation area reaches the second preset height, then install the settlement marker pole; Continue backfilling the geological body in the reclamation area until the reclamation area reaches the third preset height, drill holes in the geological body formed by the backfilling, and install the water level monitoring pipe in the drilled holes; Continue backfilling the geological body in the reclamation area until the reclamation area reaches a fourth preset height, forming the first geological body, and complete the installation of the magnetic expansion component, verticality monitoring component, pore water pressure monitoring component, settlement marker rod, and water level monitoring pipe; wherein the top ends of the magnetic expansion component, verticality monitoring component, pore water pressure monitoring component, settlement marker rod, and water level monitoring pipe all extend above the first geological body.

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