Slope stability monitoring system for waste slag field

Abstract

The invention discloses a waste slag site slope stability monitoring system which comprises a ground surface displacement monitoring device, a deep displacement monitoring device, an underground water level monitoring device, a rainfall monitoring device, a data conversion module, a monitoring base station, a slope monitoring system management platform and a mobile terminal. The deep displacement monitoring device and the underground water level monitoring device are connected with the data conversion module, and the earth surface displacement monitoring device, the rainfall monitoring device and the data conversion module communicate with the monitoring base station through a Lora network. The monitoring base station and the mobile terminal communicate with the slope monitoring system management platform through a mobile communication network; the earth surface displacement monitoring device is used for monitoring slope earth surface displacement; the deep displacement monitoring device is used for monitoring displacement deformation of side slope deep soil; and the slope monitoring system management platform is used for analyzing and processing the monitoring data and realizing real-time monitoring and early warning of the slope stability.

Description

Technical Field

[0001] The invention relates to the technical field of geotechnical engineering monitoring, and in particular to a slope stability monitoring system for a waste dump. Background Art

[0002] As an important part of the construction process of a hydropower station, the slope stability of the waste dump is directly related to the project safety and environmental protection. The traditional slope monitoring method mainly relies on manual inspection and single parameter monitoring, which has problems such as low monitoring efficiency, incomplete data, and untimely early warning. With the rapid development of sensor technology, communication technology and data processing technology, it is necessary to design an intelligent monitoring system that can realize real-time monitoring and early warning of slope stability. Summary of the invention

[0003] The technical problem to be solved by the present invention is that the existing slope monitoring method relies on manual inspection and single parameter monitoring, and has the problems of low monitoring efficiency and untimely early warning. A slope stability monitoring system for a waste dump is provided, which can realize real-time monitoring and early warning of slope stability.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a system for monitoring the stability of a slope of a waste dump, comprising a surface displacement monitoring device, a deep displacement monitoring device, a groundwater level monitoring device, a rainfall monitoring device, a data conversion module, a monitoring base station, a slope monitoring system management platform and a mobile terminal, wherein the deep displacement monitoring device and the groundwater level monitoring device are respectively connected to the data conversion module, the surface displacement monitoring device, the rainfall monitoring device and the data conversion module all communicate with the monitoring base station through a Lora network, and the monitoring base station and the mobile terminal all communicate with the slope monitoring system management platform through a mobile communication network;

[0005] The surface displacement monitoring device is used to monitor the surface displacement of the slope and obtain the surface deformation information of the slope according to the monitoring data;

[0006] The deep displacement monitoring device is used to monitor the displacement deformation of the deep soil of the slope and obtain the deep displacement information according to the monitoring data;

[0007] The groundwater level monitoring device is used to monitor the groundwater level changes in the soil on the free surface of the slope, and obtain the pore water pressure data of the soil on the free surface based on the monitoring data;

[0008] The rainfall monitoring device is used to monitor the change of rainfall on the slope;

[0009] The monitoring base station is used to receive monitoring data acquired by the surface displacement monitoring device, the deep displacement monitoring device, the groundwater level monitoring device and the rainfall monitoring device, and send the monitoring data to the slope monitoring system management platform through the mobile communication network;

[0010] The slope monitoring system management platform is used to analyze and process monitoring data and conduct slope stability assessment and early warning;

[0011] The monitoring data include ground depth and surface displacement data, groundwater level and rainfall data.

[0012] Preferably, the monitoring base station is installed on the top of the slope through a supporting column, a base station protection box and a first solar cell panel are installed on the supporting column in sequence, a base station control board and a first battery pack are arranged inside the base station protection box, a partition for fixing the base station control board is arranged horizontally inside the base station protection box, the base station control board is fixed to the top surface of the partition by screws, and the first battery pack is arranged between the bottom surface of the base station protection box and the partition;

[0013] The base station control board is provided with a processor, a power management module, a 4G communication module, a first Lora module and a storage module, and the processor is connected to the power management module, the 4G communication module, the first Lora module and the storage module respectively.

[0014] Preferably, the surface displacement monitoring device comprises a shell, a base, a control panel, a battery support frame, a battery fixing plate and a second battery pack, wherein the shell is arranged on the top surface of the base, and an annular groove matching the bottom surface of the shell is arranged at a position of the top surface of the base corresponding to the bottom surface of the shell, and the bottom surface of the shell is embedded in the annular groove and fixedly connected to the base by a set screw;

[0015] The battery support frame is arranged on the top surface of the base and is fixedly connected to the contact surface of the base, and the control board is arranged inside the battery support frame at the middle of the top surface of the base;

[0016] The battery fixing plate is placed on the top surface of the battery support frame, and the outer periphery of the battery fixing plate is movably connected to the inner periphery of the shell;

[0017] The second battery pack is arranged on the battery fixing plate.

[0018] Preferably, the first battery pack and the second battery pack are each composed of two battery modules, and the two battery modules can realize automatic switching between charging and power supply.

[0019] Preferably, the control board is provided with an embedded processor, a gyroscope, an acceleration sensor, a magnetometer, a power management circuit, an RS485 interface circuit, a wireless communication module and a Beidou module; the embedded processor is respectively connected to the power management circuit, the gyroscope, the acceleration sensor, the magnetometer, the RS485 interface circuit, the wireless communication module and the Beidou module; the power management circuit is respectively connected to the second solar cell panel, the charging interface and the second battery pack.

[0020] Preferably, the battery fixing plate is made of insulating material.

[0021] Preferably, the surface displacement monitoring device is mounted on a horizontal mounting seat provided on the slope surface, and the second solar cell panel is mounted above the horizontal mounting seat via a fixing frame.

[0022] Preferably, the deep displacement monitoring device uses a chain-type flexible inclinometer, which is connected to the data conversion module via an RS485 interface;

[0023] The groundwater level monitoring device uses a vibrating wire osmometer, which is connected to the data conversion module via an RS485 interface;

[0024] The chain-type flexible inclinometer is installed in a PVC pipe buried inside a deep soil borehole in the free surface area of ​​the slope;

[0025] The vibrating wire piezometer is installed on the bottom surface of the borehole below the PVC pipe;

[0026] Sand filling treatment is performed between the bottom of the PVC pipe and the vibrating-wire piezometer and between the outer side of the PVC pipe and the inner side of the borehole.

[0027] Preferably, the data conversion module is used to convert RS485 communication into Lora communication.

[0028] Preferably, the rainfall monitoring device is a rain gauge, and a second Lora module is installed on the USB interface of the rain gauge.

[0029] Compared with the prior art, the invention has the following beneficial effects: a slope stability monitoring system for a waste dump, which monitors the displacement of deep soil and the surface of the slope, as well as the monitoring of the groundwater level and rainfall, by deploying a surface displacement monitoring device, a deep displacement monitoring device, a groundwater level monitoring device and a rainfall monitoring device on the slope; after acquiring the monitoring data through a monitoring base station, the monitoring data is sent to a slope monitoring system management platform by using a mobile communication network; the acquired data is analyzed, processed and slope stability is evaluated, thereby achieving real-time monitoring and early warning of slope stability and avoiding the occurrence of slope collapse accidents;

[0030] By setting a gyroscope, an acceleration sensor and a magnetometer on the control board, using the sampling data of each chip, the slope surface deformation information is obtained after calculation, and the slope surface displacement is monitored;

[0031] By installing dual battery modules inside the surface displacement monitoring device and the monitoring base station, when one battery is fully charged, it can be switched to another battery, ensuring that the device can continue to work when there is insufficient sunlight, effectively improving the utilization efficiency of solar energy;

[0032] A battery support frame is arranged inside the shell of the surface displacement monitoring device, the battery support frame is fixedly connected to the base, the battery is placed above the battery support frame, and an annular groove connected to the shell is arranged on the top surface of the base. The structure is reasonably designed and each component is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the system structure of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of a monitoring base station of the present invention;

[0035] Figure 3 This is a schematic diagram of the internal structure of the base station protection box of the present invention;

[0036] Figure 4 The present invention is a schematic diagram of the structure of a surface displacement monitoring device;

[0037] Figure 5 This is a schematic diagram of the connection structure between the battery support frame and the base of the present invention;

[0038] Figure 6 This is a schematic diagram of the structure of the surface displacement monitoring device of the present invention installed on a slope;

[0039] Figure 7 This is a circuit principle block diagram of the control board of the surface displacement monitoring device of the present invention.

[0040] In the figure: 1. Surface displacement monitoring device; 2. Deep displacement monitoring device; 3. Groundwater level monitoring device; 4. Rainfall monitoring device; 5. Data conversion module; 6. Monitoring base station; 7. Slope monitoring system management platform; 8. Mobile terminal; 9. Slope; 91. Horizontal mounting seat;

[0041] 11. Shell; 12. Base; 13. Control panel; 14. Battery support frame; 15. Battery fixing plate; 16. Second battery pack; 17. Second solar cell panel; 18. Charging interface; 120. Annular groove;

[0042] 61. Support column; 62. Base station protection box; 63. First solar cell panel; 64. Base station control panel; 65. First battery pack; 66. Partition;

[0043] 131. Embedded processor; 132. Gyroscope; 133. Accelerometer; 134. Magnetometer; 135. Power management circuit; 136. RS485 interface circuit; 137. Wireless communication module; 138. Beidou module. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] See also Figure 1 The present invention provides a technical solution: a system for monitoring the stability of a slope of a waste dump, comprising a surface displacement monitoring device 1, a deep displacement monitoring device 2, a groundwater level monitoring device 3, a rainfall monitoring device 4, a data conversion module 5, a monitoring base station 6, a slope monitoring system management platform 7 and a mobile terminal 8, wherein the deep displacement monitoring device 2 and the groundwater level monitoring device 3 are respectively connected to the data conversion module 5, the surface displacement monitoring device 1, the rainfall monitoring device 4 and the data conversion module 5 all communicate with the monitoring base station 6 through a Lora network, and the monitoring base station 6 and the mobile terminal 8 all communicate with the slope monitoring system management platform 7 through a mobile communication network;

[0046] The surface displacement monitoring device 1 is used to monitor the surface displacement of the slope and obtain the surface deformation information of the slope according to the monitoring data;

[0047] The deep displacement monitoring device 2 is used to monitor the displacement deformation of the deep soil of the slope and obtain the deep displacement information according to the monitoring data;

[0048] The groundwater level monitoring device 3 is used to monitor the groundwater level changes in the soil on the free surface of the slope, and obtain the pore water pressure data of the soil on the free surface based on the monitoring data;

[0049] The rainfall monitoring device 4 is used to monitor the change of rainfall on the slope;

[0050] The monitoring base station 6 is used to receive the monitoring data obtained by the surface displacement monitoring device 1, the deep displacement monitoring device 2, the groundwater level monitoring device 3 and the rainfall monitoring device 4, and send the monitoring data to the slope monitoring system management platform 7 through the mobile communication network;

[0051] The slope monitoring system management platform 7 is used to analyze and process the monitoring data, evaluate the slope stability and provide early warning; the monitoring data includes displacement data of the deep ground and the surface, groundwater level and rainfall data.

[0052] See also Figure 2 and Figure 3 The monitoring base station 6 is installed on the top of the slope through a supporting column 61, and a base station protection box 62 and a first solar panel 63 are installed on the supporting column 61 in sequence. A base station control board 64 and a first battery pack 65 are arranged inside the base station protection box 62. A partition 66 for fixing the base station control board 64 is arranged horizontally inside the base station protection box 62, and the base station control board 64 is fixed to the top surface of the partition 66 by screws; the first battery pack 65 is arranged between the bottom surface of the base station protection box 62 and the partition 66; in this embodiment, the first solar panel 63 is installed on the top of the supporting column 61 through a triangular support frame and a clamp, and the supporting column 61 is fixed to the top of the slope by concrete.

[0053] The base station control board 64 is provided with a processor, a power management module, a 4G communication module, a first Lora module and a storage module, and the processor is connected to the power management module, the 4G communication module, the first Lora module and the storage module respectively.

[0054] See also Figure 4 and Figure 5 The surface displacement monitoring device 1 includes a shell 11, a base 12, a control board 13, a battery support frame 14, a battery fixing plate 15 and a second battery pack 16. The shell 11 is arranged on the top surface of the base 12. An annular groove 120 matching the bottom surface of the shell 11 is arranged at a position on the top surface of the base 12 corresponding to the bottom surface of the shell 11. The bottom surface of the shell 11 is embedded in the annular groove 120 and is fixedly connected to the base 11 by a set screw.

[0055] The battery support frame 14 is arranged on the top surface of the base 12 and is fixedly connected to the contact surface of the base 12. The control board 13 is arranged inside the battery support frame 14 at the middle of the top surface of the base 12. In this embodiment, the battery support frame 14 and the contact surface of the base 12 are fixedly connected by welding.

[0056] In this embodiment, a battery support frame 14 is arranged inside the shell 11 of the surface displacement monitoring device, the battery support frame 14 is fixedly connected to the base 12, the second battery pack 16 is placed above the battery support frame 14, and an annular groove 120 connected to the shell 11 is arranged on the top surface of the base 12. The structural design is reasonable and the components are easy to install.

[0057] The battery fixing plate 15 is placed on the top surface of the battery support frame 14, and the outer periphery of the battery fixing plate 15 is movably connected to the inner periphery of the shell 11; in this embodiment, the battery fixing plate 15 is made of insulating material, and a threading hole is opened on the battery fixing plate 15;

[0058] The second battery pack 16 is disposed on the battery fixing plate 15 .

[0059] In this embodiment, the first battery pack and the second battery pack are both composed of two battery modules, and the two battery modules can realize automatic switching between charging and power supply.

[0060] See also Figure 7 The control board 13 is provided with an embedded processor 131, a gyroscope 132, an acceleration sensor 133, a magnetometer 134, a power management circuit 135, an RS485 interface circuit 136, a wireless communication module 137 and a Beidou module 138. The embedded processor 131 is respectively connected to the power management circuit 135, the gyroscope 132, the acceleration sensor 133, the magnetometer 134, the RS485 interface circuit 136, the wireless communication module 137 and the Beidou module 138, and the power management circuit 135 is respectively connected to the second solar cell panel 17, the charging interface 18 and the second battery pack 16.

[0061] In this embodiment, the gyroscope 132, the acceleration sensor 133, and the magnetometer 134 are respectively selected from gyroscope chips, acceleration sensor chips, and magnetometer chips, which are directly welded on the control board 13. The gyroscope 132, the acceleration sensor 133, and the magnetometer 134 are respectively connected to the three SPI ports on the embedded processor 131, and the RS485 interface circuit 136, the wireless communication module 137, and the Beidou module 138 are respectively connected to the three UART ports on the embedded processor 131. The power management circuit 135 is connected to the power supply through I 2 Connected to port C.

[0062] In this embodiment, a gyroscope 132, an acceleration sensor 133 and a magnetometer 134 are arranged on the control board 13, and the sampling data of each chip is used to calculate and obtain the slope surface deformation information, so as to realize the monitoring of the slope surface displacement.

[0063] In this embodiment, a dual battery module is arranged inside the surface displacement monitoring device 1 and the monitoring base station 6. When one battery is fully charged, it can be switched to another battery to ensure that the device can continue to work when the sunlight is insufficient, thereby effectively improving the utilization efficiency of solar energy.

[0064] See also Figure 6The surface displacement monitoring device 1 is installed on a horizontal mounting seat 91 provided on the slope surface, and the second solar cell panel 17 is installed above the horizontal mounting seat 91 through a fixing frame, and the second solar cell panel 17 is used to supply power to the surface displacement monitoring device 1. In this embodiment, the surface displacement monitoring device 1 is provided with a plurality of horizontal mounting seats 91 respectively installed on the corresponding slope surface areas.

[0065] See also Figure 1 The deep displacement monitoring device 2 uses a chain-type flexible inclinometer, which is connected to the data conversion module 5 via an RS485 interface;

[0066] The groundwater level monitoring device 3 uses a vibrating wire osmometer, which is connected to the data conversion module via an RS485 interface;

[0067] The chain-type flexible inclinometer is installed in a PVC pipe buried inside a deep soil borehole in the free surface area of ​​the slope; the vibrating wire piezometer is installed on the bottom surface of the borehole below the PVC pipe;

[0068] Sand filling treatment is performed between the bottom of the PVC pipe and the vibrating-wire piezometer and between the outer side of the PVC pipe and the inner side of the borehole.

[0069] In this embodiment, the drilling process for installing the chain flexible inclinometer is adopted by using plant gum drilling technology. Three boreholes are arranged in the middle of the waste dump, the front edge of the slope facing the open surface, and the middle of the slope. The hole depths are 42.8m, 49.85m, and 55m. The boreholes are used to install the vibrating-wire piezometer and the chain flexible inclinometer.

[0070] In this embodiment, the chain-type flexible inclinometer uses a highly integrated precision instrument with multiple sections of 1 m. Its testing principle is as follows: by calculating the bending angle of each section of the borehole, the spatial shape is determined and the cumulative deformation is calculated in combination with the known length of each section of the axis of the chain-type flexible inclinometer. The deformation curve is formed by the cumulative value calculation. The deformation trend and deformation value of the inclinometer hole are formed through multiple measurements and data comparison. The monitoring frequency is once every 10 minutes. When the inclinometer tube has a large deformation, it can continue to monitor, further improving the measurement range.

[0071] The data conversion module in this embodiment is used to convert RS485 communication into Lora communication.

[0072] In this embodiment, the rainfall monitoring device 4 is a rain gauge, and a second Lora module is installed on the USB interface of the rain gauge.

[0073] In this embodiment, a surface displacement monitoring device 1, a deep displacement monitoring device 2, a groundwater level monitoring device 3 and a rainfall monitoring device 4 are arranged on the slope to monitor the displacement of the deep soil and the surface of the slope, as well as the groundwater level and rainfall. After the monitoring data is acquired through the monitoring base station 6, the monitoring data is sent to the slope monitoring system management platform 7 using the mobile communication network, and the acquired data is analyzed, processed and the slope stability is evaluated, thereby realizing real-time monitoring and early warning of the slope stability and avoiding the occurrence of slope collapse accidents.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A system for monitoring the slope stability of a waste dump, characterized by: It includes a surface displacement monitoring device, a deep displacement monitoring device, a groundwater level monitoring device, a rainfall monitoring device, a data conversion module, a monitoring base station, a slope monitoring system management platform and a mobile terminal. The deep displacement monitoring device and the groundwater level monitoring device are respectively connected to the data conversion module. The surface displacement monitoring device, the rainfall monitoring device and the data conversion module communicate with the monitoring base station through the Lora network. The monitoring base station and the mobile terminal communicate with the slope monitoring system management platform through the mobile communication network. The surface displacement monitoring device is used to monitor the surface displacement of the slope and obtain the surface deformation information of the slope according to the monitoring data; The deep displacement monitoring device is used to monitor the displacement deformation of the deep soil of the slope and obtain the deep displacement information according to the monitoring data; The groundwater level monitoring device is used to monitor the groundwater level changes in the soil on the free surface of the slope, and obtain the pore water pressure data of the soil on the free surface based on the monitoring data; The rainfall monitoring device is used to monitor the change of rainfall on the slope; The monitoring base station is used to receive monitoring data acquired by the surface displacement monitoring device, the deep displacement monitoring device, the groundwater level monitoring device and the rainfall monitoring device, and send the monitoring data to the slope monitoring system management platform through the mobile communication network; The slope monitoring system management platform is used to analyze and process monitoring data and conduct slope stability assessment and early warning; The monitoring data include ground depth and surface displacement data, groundwater level and rainfall data.

2. A system for monitoring the slope stability of a waste dump according to claim 1, characterized in that: The monitoring base station is installed on the top of the slope through a supporting column, a base station protection box and a first solar cell panel are installed on the supporting column in sequence, a base station control board and a first battery pack are arranged inside the base station protection box, a partition for fixing the base station control board is arranged horizontally inside the base station protection box, the base station control board is fixed to the top surface of the partition by screws, and the first battery pack is arranged between the bottom surface of the base station protection box and the partition; The base station control board is provided with a processor, a power management module, a 4G communication module, a first Lora module and a storage module, and the processor is connected to the power management module, the 4G communication module, the first Lora module and the storage module respectively.

3. A system for monitoring the slope stability of a waste dump according to claim 2, characterized in that: The surface displacement monitoring device comprises a shell, a base, a control panel, a battery support frame, a battery fixing plate and a second battery pack, wherein the shell is arranged on the top surface of the base, and an annular groove matching the bottom surface of the shell is arranged at a position of the top surface of the base corresponding to the bottom surface of the shell, and the bottom surface of the shell is embedded in the annular groove and fixedly connected to the base by a set screw; The battery support frame is arranged on the top surface of the base and is fixedly connected to the contact surface of the base, and the control board is arranged inside the battery support frame at the middle of the top surface of the base; The battery fixing plate is placed on the top surface of the battery support frame, and the outer periphery of the battery fixing plate is movably connected to the inner periphery of the shell; The second battery pack is arranged on the battery fixing plate.

4. A system for monitoring the slope stability of a waste dump according to claim 3, characterized in that: The first battery pack and the second battery pack are both composed of two battery modules, and the two battery modules can realize automatic switching between charging and power supply.

5. The system for monitoring the slope stability of a waste dump according to claim 3 is characterized by: The control board is provided with an embedded processor, a gyroscope, an acceleration sensor, a magnetometer, a power management circuit, an RS485 interface circuit, a wireless communication module and a Beidou module. The embedded processor is respectively connected to the power management circuit, the gyroscope, the acceleration sensor, the magnetometer, the RS485 interface circuit, the wireless communication module and the Beidou module. The power management circuit is respectively connected to the second solar cell panel, the charging interface and the second battery pack.

6. A system for monitoring the slope stability of a waste dump according to claim 3, characterized in that: The battery fixing plate is made of insulating material.

7. The system for monitoring the slope stability of a waste dump according to claim 5, characterized in that: The surface displacement monitoring device is installed on a horizontal mounting seat arranged on the slope surface, and the second solar cell panel is installed above the horizontal mounting seat through a fixing frame.

8. The system for monitoring the slope stability of a waste dump according to claim 1, characterized in that: The deep displacement monitoring device uses a chain-type flexible inclinometer, which is connected to the data conversion module via an RS485 interface; The groundwater level monitoring device uses a vibrating wire osmometer, which is connected to the data conversion module via an RS485 interface; The chain-type flexible inclinometer is installed in a PVC pipe buried inside a deep soil borehole in the free surface area of ​​the slope; The vibrating wire piezometer is installed on the bottom surface of the borehole below the PVC pipe; Sand filling treatment is performed between the bottom of the PVC pipe and the vibrating-wire piezometer and between the outer side of the PVC pipe and the inner side of the borehole.

9. The system for monitoring the slope stability of a waste dump according to claim 1, characterized in that: The data conversion module is used to convert RS485 communication into Lora communication.

10. The system for monitoring the slope stability of a waste dump according to claim 1, characterized in that: The rainfall monitoring device uses a rain gauge, and a second Lora module is installed on the USB interface of the rain gauge.

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