Novel underground water pore pressure monitoring device

Abstract

The invention discloses a novel underground water pore pressure monitoring device, and relates to the technical field of pore pressure monitoring, the novel underground water pore pressure monitoring device comprises a probe, the probe is connected with a probe rod, the probe rod is internally provided with a first monitoring assembly, and the probe rod is alternately and detachably connected with a plurality of static pressure connecting rods and a plurality of static pressure feeler levers; according to the invention, the plurality of static pressure connecting rods and the plurality of static pressure feeler levers are alternately connected to the probe rod in sequence, and the probes are pressed into the hole downwards, so that the detection accuracy is improved, and the detection accuracy is improved. The plurality of static pressure connecting rods and the plurality of static pressure feeler levers enter positions of corresponding depths in a hole, underground water hole pressures of different depths are monitored through the first monitoring assembly and the plurality of second monitoring assemblies, the hole pressures of different positions of multiple depths can be monitored, and the probe rod and the plurality of static pressure feeler levers are isolated from each other. And the problem that the measurement result precision is influenced by hydraulic communication is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of pore pressure monitoring, and in particular to a novel groundwater pore pressure monitoring device. Background Art

[0002] Groundwater pore pressure monitoring is the measurement of the size and changes of water pressure in soil pores below the groundwater level. It is of great significance in civil engineering, water conservancy engineering and other fields. In the actual groundwater monitoring process, it is usually necessary to bury multiple pore water pressure sensors at different depths in a hole.

[0003] There are few devices currently used to bury multiple piezometers in a single deep hole, and they generally include the following steps: 1. Drilling: first use a drilling rig to drill to a position slightly deeper than the designed depth; 2. Placing the piezometer: place the pore water pressure gauge in the drilled hole and wrap it with sand or a permeable cloth to fix it; 3. Filling with sand to fix: fill medium and fine sand above the piezometer to ensure its stability and sealing; 4. Sealing the hole: use bentonite mud balls to seal between the piezometers to cut off the hydraulic connectivity between the upper and lower holes, but the above steps have the following problems: 1. The piezometer is difficult to fix to the designed position, which may cause deviations in the measurement results; 2. The existing sealing technology is prone to the problem of connectivity between the upper and lower piezometers; 3. If there is a problem with the device, it cannot be repaired and faces the problem of non-recyclability. Summary of the invention

[0004] The purpose of the present invention is to provide a new groundwater pore pressure monitoring device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: A novel groundwater pore pressure monitoring device comprises a probe, the probe is connected to a probe rod with an internal hollow, a first monitoring component is arranged inside the probe rod, a plurality of internal hollow static pressure connecting rods and a plurality of internal hollow static pressure probe rods are alternately and detachably connected to the end of the probe rod away from the probe, and the probe rod is connected to one of the static pressure connecting rods, the number of the static pressure connecting rods is one more than the number of the static pressure probe rods, a signal transmission component is arranged inside each of the static pressure connecting rods, a second monitoring component is arranged inside each of the static pressure probe rods, and two adjacent second monitoring components are connected through the signal transmission component, the first monitoring component is connected to one of the second monitoring components through the signal transmission component, a first water-permeable structure is arranged on the probe rod, a plurality of the static pressure probe rods are arranged with a second water-permeable structure, and the first water-permeable structure and the second water-permeable structure are respectively used for supplying water to flow into the probe rod and the static pressure probe rod, and an automatic data collection device for collecting data is connected to the static pressure connecting rod farthest from the probe rod.

[0006] As a preferred solution of the present invention, the first monitoring component includes a first aviation plug fixedly arranged at the end of the probe rod, and the first aviation plug is connected to a first pore water pressure sensor via a signal line.

[0007] As a preferred solution of the present invention, the signal transmission component includes a first movable aviation socket movably connected to one end of the static pressure connecting rod and a second aviation plug fixedly connected to the other end of the static pressure connecting rod, the first movable aviation socket and the second aviation plug are commonly connected to a first spring signal line located inside the static pressure connecting rod, and the first aviation plug is plugged into and matched with the corresponding first movable aviation socket.

[0008] As a preferred solution of the present invention, the second monitoring component includes a second movable aviation socket movably connected to one end of the static pressure probe rod and a third aviation plug fixedly connected to the other end of the static pressure connecting rod, and the third aviation plug is used to be plugged and matched with the corresponding first movable aviation socket, and the second movable aviation socket is used to be plugged and matched with the corresponding second aviation plug, and the bottom of the third aviation plug is connected to the second pore water pressure sensor through a signal line, and the second pore water pressure sensor and the second movable aviation socket are commonly connected to a second spring signal line located inside the static pressure probe rod.

[0009] As a preferred solution of the present invention, the first aviation plug, the second aviation plug and the third aviation plug are all the same, and the first aviation plug, the second aviation plug and the third aviation plug are all provided with waterproof rubber strips.

[0010] As a preferred solution of the present invention, a first connecting structure is provided at the opposite ends of the probe rod and one of the static pressure connecting rods, and a second connecting structure is provided at the end of each static pressure connecting rod and the corresponding static pressure probe rod, and the first connecting structure and the second connecting structure have the same structure, and the first connecting structure includes a straight thread sleeve and an external thread sleeve, and the straight thread sleeve is slidably sleeved on the end of the static pressure connecting rod, and the straight thread sleeve slides along the axial direction of the static pressure connecting rod, and the external thread sleeve is provided at the end of the probe rod.

[0011] As a preferred solution of the present invention, after the straight thread sleeve is threadedly sleeved with the external thread sleeve, the straight thread sleeve is fixed on the static pressure connecting rod or the static pressure probe rod through a clamping block.

[0012] As a preferred solution of the present invention, the first water permeable structure and the second water permeable structure have the same structure, the first water permeable structure includes a water inlet channel arranged on the probe rod in a direction perpendicular to the axis of the probe rod, the outer wall of the probe rod is provided with a ring-shaped permeable stone, and the permeable stone is fitted with the mouth of the water inlet channel connecting to the outside of the probe rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention connects multiple static pressure connecting rods and multiple static pressure probe rods alternately to the probe rod in sequence, and presses the probe downward into the hole. The multiple static pressure connecting rods and the multiple static pressure probe rods enter positions of corresponding depths in the hole, and the groundwater pore pressures at different depths are monitored by a first monitoring component and multiple second monitoring components. The pore pressures at different positions at multiple depths can be monitored, thus avoiding deviations in the measurement results. The probe rod and the multiple static pressure probe rods are internally isolated from each other, thus avoiding the problem that hydraulic connectivity affects the accuracy of the measurement results. The entire device can be pulled up as a whole for recovery, thus improving utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0015] Figure 1 A structural schematic diagram of a probe rod portion is provided for the present invention; Figure 2 A structural schematic diagram of a static pressure connecting rod portion is provided for the present invention; Figure 3 A structural schematic diagram of a static pressure probe rod portion is provided for the present invention; Figure 4 The present invention provides an overall structural schematic diagram of a novel groundwater pore pressure monitoring device.

[0016] The numbers in the figure represent the following: 1. Probe; 2. Probe rod; 3. Static pressure connecting rod; 4. Static pressure probe rod; 5. First connecting structure; 6. First monitoring component; 7. Signal transmission component; 8. Second monitoring component; 9. First water-permeable structure; 10. Automatic collection device; 11. Second connecting structure; 12. Second water-permeable structure; 501, straight thread sleeve; 502, external thread sleeve; 601, first aviation plug; 602, first pore water pressure sensor; 701, first movable aviation socket; 702, second aviation plug; 703, first spring signal line; 801, second movable aviation socket; 802, third aviation plug; 803, second pore water pressure sensor; 804, second spring signal line; 901, water inlet channel; 902, permeable stone. DETAILED DESCRIPTION

[0017] 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.

[0018] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0019] like Figures 1 to 4 As shown, the present invention provides a novel groundwater pore pressure monitoring device, including a probe 1, the probe 1 is connected to an internally hollow probe rod 2, a first monitoring component 6 is arranged inside the probe rod 2, a plurality of internally hollow static pressure connecting rods 3 and a plurality of internally hollow static pressure probe rods 4 are alternately and detachably connected to one end of the probe rod 2 away from the probe 1, and the probe rod 2 is connected to one of the static pressure connecting rods 3, the number of static pressure connecting rods 3 is one more than the number of static pressure probe rods 4, each static pressure connecting rod 3 is arranged inside a signal transmission component 7, and each static pressure probe rod 4 are each provided with a second monitoring assembly 8, and two adjacent second monitoring assemblies 8 are connected via a signal transmission assembly 7, the first monitoring assembly 6 is connected to one of the second monitoring assemblies 8 via the signal transmission assembly 7, a first water-permeable structure 9 is provided on the probe rod 2, and a plurality of static pressure probe rods 4 are each provided with a second water-permeable structure 12, and the first water-permeable structure 9 and the second water-permeable structure 12 are respectively used for supplying water to flow into the probe rod 2 and the static pressure probe rod 4, and an automatic data collection device 10 for collecting data is connected to the static pressure connecting rod 3 which is farthest from the probe rod 2.

[0020] Because the probe rod 2, the static pressure connecting rod 3 and the static pressure probe rod 4 are all detachably connected, before monitoring, the probe rod 2, the static pressure connecting rod 3 and the static pressure probe rod 4 are not connected to each other and are in an independent state. When implementing the technical solution of the present application, first determine the position of the monitoring hole (i.e., the hole used to monitor the groundwater pore pressure), mark the position, prepare the corresponding static pressure equipment (i.e., the device for pressing the device of the present application into the monitoring hole, which is the prior art), then insert the probe 1 on the probe rod 2 downward into the monitoring hole, and place the probe rod 2 vertically at the monitoring hole, slowly press the probe rod 2 into the monitoring hole through the static pressure equipment, and make the top of the probe rod 2 extend out of the ground (such as retaining about 20 cm), to ensure the stability of the probe rod 2 and facilitate the subsequent connection with the static pressure connecting rod 3.

[0021] Then, the first static pressure connecting rod 3 is connected to the top of the probe rod 2, so that the static pressure connecting rod 3 and the probe rod 2 are stably connected, and then the static pressure connecting rod 3 and the probe rod 2 are pressed down to the inside of the monitoring hole by the static pressure equipment, until the top of the static pressure connecting rod 3 only extends out of the ground partially (such as retaining about 20 cm), and then the static pressure probe rod 4 is firmly connected to the top of the static pressure connecting rod 3, and then the top of the static pressure probe rod 4 is pressed down by the static pressure equipment, and then the remaining multiple static pressure connecting rods 3 and multiple static pressure probe rods 4 are installed in turn. After the entire device is spliced, the top one is the static pressure connecting rod 3, and at the same time, the probe rod 2 and the static pressure probe rod 4 exist at multiple positions that need to be monitored in the monitoring hole. Finally, the automatic data collection device 10 is connected through the static pressure connecting rod 3 (this is the prior art, and any device that can collect and save data can be used) to collect and save the data monitored by the first monitoring component 6 and the second monitoring component 8.

[0022] After completing the data monitoring, disconnect the automatic acquisition device 10 from the topmost static pressure connecting rod 3, then lift the static pressure equipment upward from the monitoring hole, and remove the static pressure connecting rod 3 and the static pressure probe rod 4 in the reverse order of the installation steps, so that the entire device can be recovered.

[0023] After the entire device is pressed into the monitoring hole, water flows into the probe rod 2 and multiple static pressure probe rods 4 respectively through the first permeable structure 9 and the second permeable structure 12, so that the first monitoring component 6 and the second monitoring component 8 can respectively monitor the pressure at the corresponding positions and transmit the data to the automatic collection device 10 for collection and storage.

[0024] The technical solution of the present application not only ensures that the first monitoring component 6 and the second monitoring component 8 can be fixed at corresponding positions for monitoring through the disassembly and assembly between the probe rod 2, multiple static pressure connecting rods 3 and multiple static pressure probe rods 4, but also isolates the interiors of the probe rod 2 and the static pressure probe rod 4 from each other, thereby avoiding hydraulic connection between the first monitoring component 6 and the second monitoring component 8 and between adjacent second monitoring components 8, thereby affecting the measurement result. The present application can also be recycled and reused, thereby improving the utilization rate of the device.

[0025] The first monitoring assembly 6 includes a first aviation plug 601 fixedly arranged at the end of the probe rod 2, and the first aviation plug 601 is connected to a first pore water pressure sensor 602 via a signal line.

[0026] The signal transmission component 7 includes a first movable aviation socket 701 movably connected to one end inside the static pressure connecting rod 3 and a second aviation plug 702 fixedly connected to the other end inside the static pressure connecting rod 3. The first movable aviation socket 701 and the second aviation plug 702 are commonly connected to a first spring signal line 703 located inside the static pressure connecting rod 3, and the first aviation plug 601 is plugged into and matched with the corresponding first movable aviation socket 701.

[0027] The second monitoring component 8 includes a second movable aviation socket 801 movably connected to one end of the static pressure probe rod 4 and a third aviation plug 802 fixedly connected to the other end of the static pressure connecting rod 3, and the third aviation plug 802 is used to be plugged and matched with the corresponding first movable aviation socket 701, and the second movable aviation socket 801 is used to be plugged and matched with the corresponding second aviation plug 702, and the bottom of the third aviation plug 802 is connected to the second pore water pressure sensor 803 through a signal line, and the second pore water pressure sensor 803 and the second movable aviation socket 801 are commonly connected to the second spring signal line 804 located inside the static pressure probe rod 4.

[0028] The first monitoring component 6 is connected to the adjacent second monitoring component 8 via the signal transmission component 7, and the plurality of second monitoring components 8 are sequentially connected to each other via the signal transmission component 7, and finally connected to the automatic acquisition device 10 to transmit data.

[0029] When the first monitoring component 6 is connected to the signal transmission component 7, the first movable aviation socket 701 is taken out from the inside of the static pressure connecting rod 3 (such as by tweezers), the first spring signal line 703 is stretched and elastically deformed, and the first movable aviation socket 701 is docked with the first aviation plug 601, and then the static pressure connecting rod 3 is connected and fixed to the probe rod 2.

[0030] When the signal transmission component 7 is connected to the second monitoring component 8, the second movable aviation socket 801 is taken out from the inside of the static pressure probe rod 4, the second spring signal line 804 is stretched to undergo elastic deformation, and the second movable aviation socket 801 is plugged into the second aviation plug 702, and then the static pressure probe rod 4 is connected and fixed to the static pressure connecting rod 3.

[0031] When the second monitoring component 8 is connected to the signal transmission component 7, the first movable aviation socket 701 is taken out from the static pressure connecting rod 3, the first spring signal line 703 is stretched to undergo elastic deformation, and the first movable aviation socket 701 is plugged into the third aviation plug 802, and then the static pressure connecting rod 3 and the static pressure probe rod 4 are connected and fixed.

[0032] Subsequently, the signal transmission component 7 and the second monitoring component 8 can be spliced ​​in sequence according to the above steps.

[0033] The first pore water pressure sensor 602 of the first monitoring component 6 monitors the pressure of the water flow in the probe rod 2, and the second pore water pressure sensor 803 monitors the pressure of the water flow inside the static pressure probe rod 4, and transmits data to the automatic acquisition device 10 through the signal line, the first spring signal line 703 and the second spring signal line 804.

[0034] By installing the first monitoring component 6, multiple signal transmission components 7 and multiple second monitoring components 8 in the probe rod 2, static pressure connecting rod 3 and static pressure probe rod 4 respectively, and the lengths of the probe rod 2, static pressure connecting rod 3 and static pressure probe rod 4 are fixed, the positions of the first monitoring component 6, multiple signal transmission components 7 and multiple second monitoring components 8 can be stably fixed to the predetermined positions in the monitoring hole, thereby avoiding the problem of deviation in the measurement results, and the probe rod 2 and the static pressure probe rod 4 are isolated from each other, thereby avoiding the problem of mutual influence between the first monitoring component 6 and the second monitoring component 8 and between the second monitoring components 8 due to hydraulic connection.

[0035] The first active aviation socket 701 and the second active aviation socket 801 have the same structure, the first aviation plug 601 , the second aviation plug 702 and the third aviation plug 802 have the same structure, and the first aviation plug 601 , the second aviation plug 702 and the third aviation plug 802 are all provided with waterproof tapes.

[0036] Waterproof strips are installed to prevent groundwater from entering the line and disrupting the measurement process.

[0037] A first connecting structure 5 is provided at the opposite ends of the probe rod 2 and one of the static pressure connecting rods 3, and a second connecting structure 11 is provided at the end of each static pressure connecting rod 3 and the corresponding static pressure probe rod 4. The first connecting structure 5 and the second connecting structure 11 have the same structure. The first connecting structure 5 includes a straight thread sleeve 501 and an external thread sleeve 502, and the straight thread sleeve 501 is slidably sleeved on the end of the static pressure connecting rod 3, and the straight thread sleeve 501 slides along the axial direction of the static pressure connecting rod 3, and the external thread sleeve 502 is provided at the end of the probe rod 2.

[0038] The probe rod 2 and the static pressure connecting rod 3 are detachably connected via a first connecting structure 5 , and the static pressure connecting rod 3 and the static pressure probe rod 4 are detachably connected via a second connecting structure 11 .

[0039] When the probe rod 2 and the static pressure connecting rod 3 are connected, the straight thread sleeve 501 is slid outward along the axial direction of the static pressure connecting rod 3 until it is threadedly connected with the external thread sleeve 502 on the static pressure connecting rod 3 until the straight thread sleeve 501 is completely engaged with the external thread sleeve 502. At this time, the connection between the probe rod 2 and the static pressure connecting rod 3 is completed. Similarly, the static pressure connecting rod 3 and the static pressure probe rod 4 are also connected and fixed in this way.

[0040] In this embodiment, the straight thread sleeve 501 specifically includes two parts, a non-thread sleeve and a thread sleeve, and the two parts together constitute the straight thread sleeve 501 .

[0041] In this embodiment, the ends of the static pressure connecting rod 3 and the static pressure probe rod 4 are both recessed inward to form an annular groove, and the straight thread sleeve 501 is slidably connected in the annular groove. The inner wall of the annular groove restricts the straight thread sleeve 501 from moving to only one side.

[0042] After the straight thread sleeve 501 is threadedly sleeved with the external thread sleeve 502 , the straight thread sleeve 501 is fixed on the static pressure connecting rod 3 or the static pressure probe rod 4 through a clamping block.

[0043] The straight thread sleeve 501 needs to slide a certain distance to fully engage with the external thread sleeve 502, so that the static pressure connecting rod 3 and the static pressure probe rod 4 can move along their own axis, thereby causing the positions of the first monitoring component 6 and the second monitoring component 8 and the signal transmission component 7 to change, thereby affecting the accuracy of the monitoring results. At this time, the straight thread sleeve 501 is fixed to the static pressure connecting rod 3 and the static pressure probe rod 4 by a clamping block (not shown in the drawings) to limit the straight thread sleeve 501 from sliding on the static pressure connecting rod 3 and the static pressure probe rod 4.

[0044] In this embodiment, the card block is clamped between the straight thread sleeve 501 and the inner wall of the annular groove at the end of the static pressure connecting rod 3 (or the static pressure probe rod 4). Furthermore, the card block can be a structure with elastic deformation ability, such as a spring piece, etc. There are card grooves on the inner wall of the annular groove and the end of the straight thread sleeve 501 for the card block to be inserted, so as to prevent the card block from falling.

[0045] The first water-permeable structure 9 and the second water-permeable structure 12 have the same structure. The first water-permeable structure 9 includes a water inlet channel 901 arranged on the probe rod 2 in a direction perpendicular to the axis of the probe rod 2. The outer wall of the probe rod 2 is provided with a ring-shaped permeable stone 902, and the permeable stone 902 is fitted with the mouth of the water inlet channel 901 connecting to the outside of the probe rod 2.

[0046] The groundwater is filtered through the annular permeable stone 902 to remove impurities such as sludge, and finally enters the probe rod 2 and the static pressure probe rod 4 through the water inlet channel 901, thereby contacting the first pore water pressure sensor 602 and the second pore water pressure sensor 803, and then monitoring the groundwater pressure.

[0047] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any form. Any technical personnel in this field may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention.

[0048] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A novel groundwater pore pressure monitoring device, comprising a probe (1), characterized in that: The probe (1) is connected to an internally hollow probe rod (2), a first monitoring component (6) is arranged inside the probe rod (2), a plurality of internally hollow static pressure connecting rods (3) and a plurality of internally hollow static pressure probe rods (4) are alternately and detachably connected to one end of the probe rod (2) away from the probe (1), and the probe rod (2) is connected to one of the static pressure connecting rods (3), the number of the static pressure connecting rods (3) is one more than the number of the static pressure probe rods (4), each of the static pressure connecting rods (3) is arranged inside a signal transmission component (7), and each of the static pressure probe rods (4) is arranged inside a second monitoring component (8) ), and two adjacent second monitoring components (8) are connected via a signal transmission component (7), the first monitoring component (6) is connected to one of the second monitoring components (8) via the signal transmission component (7), the probe rod (2) is provided with a first water-permeable structure (9), a plurality of static pressure probe rods (4) are provided with a second water-permeable structure (12), and the first water-permeable structure (9) and the second water-permeable structure (12) are used to supply water flow into the probe rod (2) and the static pressure probe rod (4), respectively, and an automatic data acquisition device (10) for acquiring data is connected to the static pressure connecting rod (3) farthest from the probe rod (2).

2. A new groundwater pore pressure monitoring device according to claim 1, characterized in that: The first monitoring assembly (6) comprises a first aviation plug (601) fixedly arranged at the end of the probe rod (2), and the first aviation plug (601) is connected to a first pore water pressure sensor (602) via a signal line.

3. A new groundwater pore pressure monitoring device according to claim 2, characterized in that: The signal transmission component (7) comprises a first movable aviation socket (701) movably connected to one end inside the static pressure connecting rod (3) and a second aviation plug (702) fixedly connected to the other end inside the static pressure connecting rod (3); the first movable aviation socket (701) and the second aviation plug (702) are commonly connected to a first spring signal line (703) located inside the static pressure connecting rod (3); and the first aviation plug (601) is plugged into and matched with the corresponding first movable aviation socket (701).

4. A new groundwater pore pressure monitoring device according to claim 3, characterized in that: The second monitoring assembly (8) comprises a second movable aviation socket (801) movably connected to one end of the static pressure probe rod (4) and a third aviation plug (802) fixedly connected to the other end of the static pressure connecting rod (3), wherein the third aviation plug (802) is used for plugging and matching with the corresponding first movable aviation socket (701), and the second movable aviation socket (801) is used for plugging and matching with the corresponding second aviation plug (702), and the bottom of the third aviation plug (802) is connected to a second pore water pressure sensor (803) via a signal line, and the second pore water pressure sensor (803) and the second movable aviation socket (801) are commonly connected to a second spring signal line (804) located inside the static pressure probe rod (4).

5. A new groundwater pore pressure monitoring device according to claim 4, characterized in that: The first active aviation socket (701) and the second active aviation socket (801) have the same structure, the first aviation plug (601), the second aviation plug (702) and the third aviation plug (802) have the same structure, and the first aviation plug (601), the second aviation plug (702) and the third aviation plug (802) are all provided with waterproof adhesive strips.

6. A new groundwater pore pressure monitoring device according to claim 1, characterized in that: The probe rod (2) and one of the static pressure connecting rods (3) are provided with a first connecting structure (5) at opposite ends thereof, and each static pressure connecting rod (3) and the end of the corresponding static pressure probe rod (4) are provided with a second connecting structure (11), the first connecting structure (5) and the second connecting structure (11) having the same structure, the first connecting structure (5) comprising a straight thread sleeve (501) and an external thread sleeve (502), the straight thread sleeve (501) being slidably sleeved on the end of the static pressure connecting rod (3), and the straight thread sleeve (501) slidingly slides along the axial direction of the static pressure connecting rod (3), and the external thread sleeve (502) is provided at the end of the probe rod (2).

7. A new groundwater pore pressure monitoring device according to claim 6, characterized in that: After the straight thread sleeve (501) is threadedly sleeved with the external thread sleeve (502), the straight thread sleeve (501) is fixed on the static pressure connecting rod (3) or the static pressure probe rod (4) via a clamping block.

8. A new groundwater pore pressure monitoring device according to claim 1, characterized in that: The first water-permeable structure (9) and the second water-permeable structure (12) have the same structure. The first water-permeable structure (9) comprises a water inlet channel (901) arranged on the probe rod (2) in a direction perpendicular to the axis of the probe rod (2). The outer wall of the probe rod (2) is provided with a ring-shaped permeable stone (902), and the permeable stone (902) fits with the opening of the water inlet channel (901) that is connected to the outside of the probe rod (2).

Images