Water level monitoring device for geological engineering

Abstract

The invention relates to the technical field of water level measurement, in particular to a water level monitoring device for geological engineering, which comprises an outer cylinder, a sensor, a support mechanism and a trigger unit, a conical tip is arranged at the lower end of the outer cylinder; the sensor is installed in the outer cylinder, so that the internal structure of the sensor is prevented from being damaged by upward resistance of water flow when the sensor enters water. The supporting mechanism comprises a plurality of supporting units distributed in the circumferential direction of the outer barrel. When the supporting mechanism is in the first state, the multiple supporting units are of a conical structure on the periphery of the outer cylinder to reduce the water entry resistance, the conical tip at the lower end of the outer cylinder can be inserted into the water bottom, then the outer cylinder and the sensor in the outer cylinder are both in the vertical state, and the accuracy of the detection result is improved. After the outer cylinder is inserted into the water bottom, the supporting mechanism is switched to the second state, the multiple supporting units are unfolded to be in a plane shape and abut against the water bottom face, the outer cylinder can be further stably supported, and the influence of disturbance of sludge at the water bottom near the outer cylinder on the measurement result can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of water level measurement, and in particular to a water level monitoring device for geological engineering. Background Art

[0002] In geological engineering, by monitoring and recording the groundwater level, it is possible to analyze the impact of water level changes on engineering projects, groundwater resources and soil environment, which is of great significance for ensuring engineering safety and predicting geological disasters. Commonly used water level measurement devices include static water level gauges, float water level gauges, conductivity water level sensors, pressure water level sensors, sonic water level gauges, laser water level measurement devices, etc. Among them, the pressure water level sensor measures the liquid level by measuring the static pressure of the liquid. The higher the liquid level, the greater the pressure generated by the liquid. When in use, in order to ensure the accuracy of the measurement data, the sensor needs to be installed in the housing and fixed to the bottom of the liquid with a bracket so that the bottom of the sensor measures the water pressure and reduces the impact of water flow on the measurement. However, when the sensor is put into the water, the resistance of the water flow will affect the sensing diaphragm in the sensor. When the sensor reaches the bottom of the water, the silt, sediment or water plants at the bottom of the water will also affect the bottom measurement area of ​​the sensor, affecting the detection accuracy. Summary of the invention

[0003] The invention provides a water level monitoring device for geological engineering, so as to solve the problem that the existing sensor is easily affected by the environment during use, which is not conducive to the measurement accuracy.

[0004] A water level monitoring device for geological engineering of the present invention adopts the following technical solution: A water level monitoring device for geological engineering, comprising an outer cylinder, a sensor, a support mechanism and a trigger unit; the outer cylinder is arranged vertically and has a conical tip at the lower end; a plurality of tilting rods are rotatably mounted on the outer cylinder; the sensor is installed in the outer cylinder, and the upper end is connected to a wire extending out of the outer cylinder, and the lower end is suspended and connected to the outside of the outer cylinder; the support mechanism comprises a plurality of support units distributed around the outer cylinder, each support unit comprises a counterweight rod and a support plate made of flexible material, one side of the support plate in the circumferential direction of the outer cylinder is connected to the counterweight rod of the same support unit, and the other side is connected to the counterweight rod of the adjacent support unit; one end of the counterweight rod It is hinged to the outer wall of the outer cylinder; the supporting mechanism has a first state and a second state. In the first state, the other end of the counterweight rod of each supporting unit is connected to a tilting rod through a first pull rope, and the end of the counterweight rod connected to the first pull rope is located above the end hinged to the outer cylinder, so that the multiple supporting units are retracted to form a cone with a large upper end and a small lower end; in the second state, the first pull rope is separated from the tilting rod, and the multiple supporting units are opened to form a plane; the supporting mechanism is in the first state during the process of the outer cylinder entering the water, and the trigger unit switches the supporting mechanism to the second state when the conical tip of the outer cylinder penetrates into the bottom of the water.

[0005] Optionally, the tilting rod includes a horizontal rod and a vertical rod, one end of the horizontal rod is fixedly connected to the upper end of the vertical rod, and the middle section of the horizontal rod is hinged to the outer tube around a horizontal axis, and an elastic member is arranged between the other end of the horizontal rod and the outer tube, and the elastic member causes the vertical rod at the other end of the horizontal rod to remain vertical; in the first state of the support mechanism, the first pull rope is sleeved on the vertical rod; the trigger unit includes a counterweight ring and a second pull rope, the counterweight ring is located above the horizontal rod and is connected to the wire through the second pull rope, and when the conical tip of the outer tube penetrates into the bottom of the water, the wire relaxes, allowing the counterweight ring to move downward to press the horizontal rod away from one end of the vertical rod, thereby causing the horizontal rod to drive the vertical rod to rotate upward, so that the first pull rope is disengaged from the vertical rod.

[0006] Optionally, a support ring is provided above the outer cylinder, and the support ring is connected to the outer cylinder through a plurality of pillars; when the support mechanism is in the first state, the counterweight ring is located at the lower side of the support ring and abuts against the lower side of the support ring under the tension of the second pull rope.

[0007] Optionally, the sensor and the outer cylinder slide up and down in cooperation; a magnetic ring is fixed to the outer peripheral wall of the lower end of the sensor, and the magnetic ring is installed on the outer cylinder for sliding up and down, and a through hole is opened on the magnetic ring to allow water to flow through; a synchronization ring is installed on the outer wall of the outer cylinder for sliding up and down, and the synchronization ring and the magnetic ring can be magnetically attracted to each other, and then the sensor is driven to move up and down through the magnetic ring; the counterweight rods of multiple support units are all hinged to the synchronization ring.

[0008] Optionally, a vertical groove is provided at the upper end of the outer cylinder, the upper end of the vertical groove passes through the upper end surface of the outer cylinder, and the end away from the axis of the outer cylinder passes through the outer circumferential surface of the outer cylinder; the vertical rod is clamped in the vertical groove and kept vertical under the action of the elastic member.

[0009] Optionally, the outer cylinder includes a lower cylinder, an upper cylinder, a rotating ring and a water inlet pipe, the upper cylinder is located above the lower cylinder and is coaxial with the lower cylinder, and is fixedly connected to the lower cylinder by a connecting rod; the rotating ring is rotatably installed between the upper cylinder and the lower cylinder and is coaxial with the upper cylinder, the water inlet pipe is located outside the outer cylinder and is installed on the rotating ring and connects the inside and outside of the outer cylinder.

[0010] Optionally, a conical tip is arranged at the lower end of the lower tube, and the interior is hollow and connected to the interior of the lower tube, an end cover is arranged at the upper end of the upper tube, the middle section of the cross bar is hinged to the end cover of the upper tube, the elastic member is located on the lower side of the cross bar and connected to the end cover of the upper tube; the upper end of the sensor passes through the end cover of the upper tube and is connected to the wire, and the sensor and the end cover of the upper tube are slidingly sealed.

[0011] Optionally, the support plate is in a wave shape extending in the radial direction of the outer cylinder.

[0012] Optionally, filter holes are provided on the support plate.

[0013] Optionally, a plurality of guide blocks are provided in the outer cylinder, and the plurality of guide blocks are spaced apart around the circumference of the outer cylinder to support the sensor without affecting the water flow to the bottom of the sensor.

[0014] The beneficial effects of the present invention are as follows: in the first state, the support mechanism of the geological engineering water level monitoring device of the present invention forms a conical structure on the outer periphery of the outer cylinder, which can not only reduce the influence of water flow disturbance on the sensor in the outer cylinder, but also reduce the water entry resistance, and the sensor is arranged in the outer cylinder to avoid the damage to the internal structure of the sensor by the upward resistance of the water flow during the sensor entering the water. The conical tip at the lower end of the outer cylinder can penetrate into the bottom of the water, so that the outer cylinder and the sensor in the outer cylinder are both in a vertical state, so as to improve the accuracy of the detection result. After the outer cylinder penetrates into the bottom of the water, the support mechanism switches to the second state, and the multiple support units are opened in a plane and supported on the bottom of the water, which can not only further stably support the outer cylinder, but also reduce the influence of the silt disturbance on the bottom of the water near the outer cylinder on the measurement result.

[0015] Furthermore, the outer wall of the outer cylinder provides a certain margin for the upward and downward movement of the synchronization ring. After the outer cylinder is sunk into the water, if the mud on the bottom of the water is soft, the outer cylinder has a tendency to continue to move downward. The multiple support units that are opening will move upward relative to the outer cylinder under the push of the synchronization ring on the bottom of the water, until the multiple support units are fully opened to the plane that fits the bottom of the water, which prevents the outer cylinder from continuing to move downward and keeps the outer cylinder stable. During the upward movement of the synchronization ring relative to the outer cylinder, the sensor is driven to move upward synchronously through the suction force of the magnetic ring, so that the bottom of the sensor is flush with the plane formed by the multiple support units, that is, flush with the bottom of the water, and then the water level can be directly converted according to the measured water pressure, further improving the accuracy of the measurement.

[0016] Furthermore, a rotating ring is provided to enable the water inlet pipe to rotate freely. Under the action of water flow, the water inlet pipe can drive the rotating ring to rotate relative to the upper tube and the lower tube, so that the water inlet pipe is on the back water side of the outer tube, reducing the probability of impurities carried by the water flow entering the water inlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a water level monitoring device for geological engineering of the present invention; Figure 2 It is a front view of the overall structure of an embodiment of a water level monitoring device for geological engineering of the present invention; Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle; Figure 4 for Figure 2Schematic diagram of the cross section along the CC direction; Figure 5 for Figure 4 The enlarged schematic diagram of point B in the middle; Figure 6 It is a schematic diagram of a supporting mechanism in a second state in one embodiment of a geological engineering water level monitoring device of the present invention; Figure 7 It is a cross-sectional schematic diagram of a supporting mechanism in a second state in one embodiment of a geological engineering water level monitoring device of the present invention; Figure 8 It is a structural schematic diagram of a support unit in another embodiment of a geological engineering water level monitoring device of the present invention.

[0019] In the figure: 100, outer cylinder; 110, lower cylinder; 111, connecting rod; 120, upper cylinder; 130, rotating ring; 140, water inlet pipe; 150, support ring; 160, guide block; 170, synchronization ring; 180, tilting rod; 190, elastic member; 200, sensor; 210, wire; 220, magnetic ring; 300, supporting mechanism; 310, counterweight rod; 320, supporting plate; 330, first pull rope; 400, trigger unit; 410, counterweight ring; 420, second pull rope. DETAILED DESCRIPTION

[0020] 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.

[0021] An embodiment of a geological engineering water level monitoring device of the present invention is as follows Figures 1 to 7 As shown, it includes an outer cylinder 100 , a sensor 200 , a supporting mechanism 300 and a trigger unit 400 .

[0022] The outer cylinder 100 is vertically arranged and has a conical tip at the lower end; a plurality of tilting rods 180 are rotatably mounted on the outer cylinder 100 .

[0023] The sensor 200 is installed in the outer cylinder 100, and the upper end is connected to a wire 210 extending out of the outer cylinder 100, and the lower end is suspended and connected to the outside of the outer cylinder 100. The other end of the wire 210 is usually connected to a display (not shown in the figure), and the display and the sensor 200 are both prior arts. The sensor 200 converts the static pressure of the liquid into an electrical signal, and converts it into a standard electrical signal through temperature compensation and linear correction. The display converts the pressure signal measured by the sensor 200 into a digital signal that is easy to view.

[0024] The support mechanism 300 includes a plurality of support units distributed circumferentially around the outer cylinder 100, each support unit includes a counterweight rod 310 and a support plate 320 of a flexible material, specifically, the support plate 320 can be made of waterproof cloth, plastic, rubber, etc., and can be folded and folded. One side of the support plate 320 in the circumferential direction of the outer cylinder 100 is connected to the counterweight rod 310 of the same support unit, and the other side is connected to the counterweight rod 310 of the adjacent support unit. One end of the counterweight rod 310 is hinged to the outer peripheral wall of the outer cylinder 100; the support mechanism 300 has a first state and a second state. In the first state, the other end of the counterweight rod 310 of each support unit is connected to a tilting rod 180 through a first pull rope 330, and the end of the counterweight rod 310 connected to the first pull rope 330 is located above the end hinged to the outer cylinder 100, so that the multiple support units are retracted to form a cone with a large upper end and a small lower end; in the second state, the first pull rope 330 is detached from the tilting rod 180, and the multiple support units are opened to form a plane.

[0025] The support mechanism 300 is in the first state when the outer tube 100 enters the water, and the trigger unit 400 switches the support mechanism 300 to the second state when the conical tip of the outer tube 100 penetrates the bottom surface of the water.

[0026] In the first state, the support mechanism 300 forms a conical structure on the outer periphery of the outer cylinder 100, which can reduce the influence of water flow disturbance on the sensor 200 in the outer cylinder 100, and the sensor 200 is arranged in the outer cylinder 100 to avoid the damage to the internal structure of the sensor 200 caused by the upward resistance of the water flow during the process of the sensor 200 entering the water. The conical tip at the lower end of the outer cylinder 100 can penetrate into the bottom of the water, so that the outer cylinder 100 and the sensor 200 in the outer cylinder 100 are both in a vertical state to improve the accuracy of the detection result. After the outer cylinder 100 penetrates into the bottom of the water, the support mechanism 300 switches to the second state, and the multiple support units are opened in a plane and supported on the bottom of the water, which can not only further stably support the outer cylinder 100, but also reduce the influence of the mud disturbance on the bottom of the water near the outer cylinder 100 on the measurement result.

[0027] In this embodiment, the tilting rod 180 includes a horizontal rod and a vertical rod, one end of the horizontal rod is fixedly connected to the upper end of the vertical rod, and the middle section of the horizontal rod is hinged to the outer cylinder 100 around a horizontal axis. An elastic member 190 is arranged between the other end of the horizontal rod and the outer cylinder 100, and the elastic member 190 causes the vertical rod at the other end of the horizontal rod to remain vertical. In the first state of the support mechanism 300, the first pull rope 330 is sleeved on the vertical rod; the trigger unit 400 includes a weight ring 410 and a second pull rope 420, the weight ring 410 is located above the horizontal rod and connected to the wire 210 through the second pull rope 420, when the conical tip of the outer cylinder 100 penetrates the bottom of the water, the wire 210 relaxes, allowing the weight ring 410 to move downward to press the end of the horizontal rod away from the vertical rod, thereby causing the horizontal rod to drive the vertical rod to rotate upward, so that the first pull rope 330 is separated from the vertical rod. Specifically, a vertical groove is provided at the upper end of the outer cylinder 100, the upper end of the vertical groove passes through the upper end surface of the outer cylinder 100, and the end away from the axis of the outer cylinder 100 passes through the outer peripheral surface of the outer cylinder 100; the vertical rod is clamped in the vertical groove and kept vertical under the action of the elastic member 190. Preferably, in the first state of the support mechanism 300, the first pull rope 330 is in a horizontal state, or the end connected to the counterweight rod 310 is lower than the end sleeved on the vertical rod, thereby preventing the first pull rope 330 from driving the tilting rod 180 to rotate and then detaching from the vertical rod under the pulling of the counterweight rod 310.

[0028] In this embodiment, a support ring 150 is arranged above the outer cylinder 100, and the support ring 150 is connected to the outer cylinder 100 through a plurality of pillars; when the support mechanism 300 is in the first state, the counterweight ring 410 is located at the lower side of the support ring 150 and abuts against the lower side of the support ring 150 under the tension of the second pull rope 420, so that the wire 210 can provide an upward pulling force to the outer cylinder 100 through the second pull rope 420 and the counterweight ring 410, and the connection position between the wire 210 and the sensor 200 does not need to be over-tensioned to avoid loosening and damage of the connection.

[0029] In this embodiment, the sensor 200 and the outer cylinder 100 slide up and down together; a magnetic ring 220 is fixed to the outer peripheral wall of the lower end of the sensor 200, and the magnetic ring 220 is slidably mounted on the outer cylinder 100, and a through hole for allowing water to flow through is opened on the magnetic ring 220; a synchronization ring 170 is slidably mounted on the outer wall of the outer cylinder 100, and the synchronization ring 170 is a metal material that can be magnetically attracted, and can be magnetically attracted to the magnetic ring 220, and then the sensor 200 is driven to move up and down synchronously through the magnetic ring 220; the counterweight rods 310 of the multiple support units are all hinged to the synchronization ring 170. The outer wall of the outer cylinder 100 provides a certain margin for the up and down movement of the synchronization ring 170, that is, a ring groove with a certain height in the vertical direction is opened on the outer wall of the outer cylinder 100, and the synchronization ring 170 is sleeved in the ring groove, and is located at the bottom of the ring groove under the gravity of the support mechanism 300 when the outer cylinder 100 enters the water. After the outer cylinder 100 is sunk into the water bottom, if the bottom mud is soft, the outer cylinder 100 tends to continue to move downward, and the multiple support units that are opening will move upward relative to the outer cylinder 100 under the push of the synchronization ring 170 at the bottom of the water, until the multiple support units are fully opened to the plane that fits the bottom surface of the water, preventing the outer cylinder 100 from moving downward further and keeping the outer cylinder 100 stable. During the upward movement of the synchronization ring 170 relative to the outer cylinder 100, the sensor 200 is driven to move upward synchronously through the suction force of the magnetic ring 220, so that the bottom of the sensor 200 is flush with the plane formed by the multiple support units, that is, flush with the bottom of the water, and the water level can be directly converted according to the measured water pressure.

[0030] In this embodiment, the outer cylinder 100 includes a lower cylinder 110, an upper cylinder 120, a rotating ring 130 and a water inlet pipe 140. The upper cylinder 120 is located above the lower cylinder 110 and is coaxial with the lower cylinder 110, and is fixedly connected to the lower cylinder 110 through a connecting rod 111. The rotating ring 130 is rotatably installed between the upper cylinder 120 and the lower cylinder 110 and is coaxial with the upper cylinder 120. The water inlet pipe 140 is located outside the outer cylinder 100 and is installed on the rotating ring 130 and communicates the inside and outside of the outer cylinder 100. Among them, the connecting rod 111 is located inside the outer cylinder 100, and crosses the rotating ring 130 to connect the upper cylinder 120 and the lower cylinder 110. The water inlet pipe 140 is configured to have a certain weight, and can drive the rotating ring 130 to rotate relative to the upper cylinder 120 and the lower cylinder 110 under the action of water flow, so that the water inlet pipe 140 is on the back side of the outer cylinder 100, reducing the probability of impurities carried by the water flow entering the water inlet pipe 140.

[0031] In this embodiment, the conical tip is arranged at the lower end of the lower tube 110, and the interior is hollow and connected to the interior of the lower tube 110, an end cover is arranged at the upper end of the upper tube 120, the middle section of the cross bar is hinged to the end cover of the upper tube 120, the elastic member 190 is located on the lower side of the cross bar and connected to the end cover of the upper tube 120; the upper end of the sensor 200 passes through the end cover of the upper tube 120 and is connected to the wire 210, and the sensor 200 and the end cover of the upper tube 120 are slidably sealed.

[0032] In this embodiment, the support plate 320 is in a wave shape extending along the radial direction of the outer cylinder 100, which can not only slow down the water flow toward the outer cylinder 100, but also increase the contact area with the bottom of the water when the bottom of the water is soft, thereby increasing the stability of the outer cylinder 100 standing upright. Figure 8 As shown, filter holes are provided on the support plate 320 to reduce the resistance when the support plate 320 rotates to a horizontal state and to isolate weeds at the bottom of the water.

[0033] In this embodiment, a plurality of guide blocks 160 are disposed in the outer cylinder 100 . The plurality of guide blocks 160 are spaced apart around the circumference of the outer cylinder 100 to support the sensor 200 without affecting the water flow to the bottom of the sensor 200 .

[0034] When the water level monitoring device for geological engineering of the present invention is not in use, the second pull rope 420 can be tightened to make the counterweight ring 410 abut against the support ring 150, and the first pull rope 330 connects the tilting rod 180 and the counterweight rod 310, so that the support mechanism 300 is in the first state, saving storage space. When working, the tapered tip of the outer cylinder 100 is sent downward into the water by holding the wire 210, and the support mechanism 300 enters the water in the first state, and the second pull rope 420 is loosened, so that the counterweight ring 410 remains in contact with the support ring 150 under the pull of the second pull rope 420. In the first state of the support mechanism 300, a plurality of support plates 320 are surrounded to form a cone with a large upper end and a small lower end. Preferably, the cone can be coplanar with the tapered tip at the lower end of the outer cylinder 100 to further reduce the resistance to entering the water. The conductor 210 is slowly lowered. Under the action of the gravity of the outer cylinder 100 and the supporting mechanism 300, the outer cylinder 100 always moves down in a vertical state until the conical tip penetrates the bottom of the water. The conductor 210 continues to be lowered to relax the second pull rope 420, allowing the counterweight ring 410 to move downward under gravity to squeeze one end of the horizontal rod of the tilting rod 180 to move downward, so that the vertical rod at the other end of the horizontal rod rotates upward, and one end of the first pull rope 330 sleeved on the vertical rod is detached from the vertical rod. The counterweight rod 310 rotates around the synchronous ring 170 under its own gravity until it is flush with the bottom of the water and abuts against it, thereby making the support plates 320 of the multiple support units open into a plane and flush with the bottom of the water. After the outer cylinder 100 is sunk into the water bottom, if the bottom mud is soft, the outer cylinder 100 tends to continue to move downward, and the multiple support units that are being opened will move upward relative to the outer cylinder 100 under the push of the synchronization ring 170 at the bottom of the water, until the multiple support units are fully opened to the plane that fits the bottom surface of the water, preventing the outer cylinder 100 from moving downward further and keeping the outer cylinder 100 stable. During the upward movement of the synchronization ring 170 relative to the outer cylinder 100, the sensor 200 is driven to move upward synchronously through the suction force of the magnetic ring 220, so that the bottom of the sensor 200 is flush with the plane formed by the multiple support units, that is, flush with the bottom of the water.

[0035] Water flows into the outer cylinder 100 from the water inlet pipe 140 and flows to the bottom of the sensor 200. Since the water inlet pipe 140 connects the inside and outside of the outer cylinder 100 and the bottom of the sensor 200 is flush with the bottom of the water, the water pressure felt by the sensor 200 is the actual water pressure (P) of the water area. According to H=P / ρg (ρ is the density of water, g is the acceleration of gravity), the water level of the water area can be converted.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A water level monitoring device for geological engineering, characterized in that: It includes an outer tube, a sensor, a supporting mechanism and a trigger unit; The outer cylinder is arranged vertically and has a conical tip at the lower end; a plurality of tilting rods are rotatably mounted on the outer cylinder; The sensor is installed in the outer tube, and the upper end is connected to a wire extending out of the outer tube, and the lower end is suspended in the air and communicated with the outside of the outer tube; The support mechanism includes a plurality of support units distributed around the outer cylinder, each support unit includes a counterweight rod and a support plate of flexible material, one side of the support plate in the circumferential direction of the outer cylinder is connected to the counterweight rod of the same support unit, and the other side is connected to the counterweight rod of the adjacent support unit; one end of the counterweight rod is hinged to the outer peripheral wall of the outer cylinder; the support mechanism has a first state and a second state, in the first state, the other end of the counterweight rod of each support unit is connected to a tilting rod through a first pull rope, and the end of the counterweight rod connected to the first pull rope is located above the end hinged to the outer cylinder, so that the plurality of support units are retracted to each other to form a cone with a large upper end and a small lower end; in the second state, the first pull rope is separated from the tilting rod, and the plurality of support units are opened to form a plane; The support mechanism is in the first state when the outer tube enters the water, and the trigger unit switches the support mechanism to the second state when the conical tip of the outer tube penetrates into the bottom surface of the water.

2. A water level monitoring device for geological engineering according to claim 1, characterized in that: The tilting rod includes a horizontal rod and a vertical rod, one end of the horizontal rod is fixedly connected to the upper end of the vertical rod, and the middle section of the horizontal rod is hinged to the outer tube around a horizontal axis, and an elastic member is arranged between the other end of the horizontal rod and the outer tube, and the elastic member causes the vertical rod at the other end of the horizontal rod to remain vertical; in the first state of the supporting mechanism, the first pull rope is sleeved on the vertical rod; the trigger unit includes a counterweight ring and a second pull rope, the counterweight ring is located above the horizontal rod and is connected to the wire through the second pull rope, and when the conical tip of the outer tube penetrates into the bottom of the water, the wire relaxes, allowing the counterweight ring to move downward to press the horizontal rod away from one end of the vertical rod, thereby causing the horizontal rod to drive the vertical rod to rotate upward, so that the first pull rope is separated from the vertical rod.

3. A geological engineering water level monitoring device according to claim 2, characterized in that: A support ring is arranged above the outer cylinder and is connected to the outer cylinder through a plurality of pillars. When the support mechanism is in the first state, the counterweight ring is located at the lower side of the support ring and abuts against the lower side of the support ring under the tension of the second pull rope.

4. A geological engineering water level monitoring device according to claim 1, characterized in that: The sensor and the outer cylinder slide up and down in cooperation; a magnetic ring is fixed to the outer peripheral wall of the lower end of the sensor, and the magnetic ring is installed on the outer cylinder for sliding up and down, and a through hole is opened on the magnetic ring to allow water to flow through; a synchronous ring is installed on the outer wall of the outer cylinder for sliding up and down, and the synchronous ring and the magnetic ring can be magnetically attracted to each other, and then the sensor is driven to move up and down through the magnetic ring; the counterweight rods of multiple support units are hinged to the synchronous ring.

5. A geological engineering water level monitoring device according to claim 2, characterized in that: A vertical groove is provided at the upper end of the outer cylinder, the upper end of the vertical groove passes through the upper end surface of the outer cylinder, and the end away from the axis of the outer cylinder passes through the outer peripheral surface of the outer cylinder; the vertical rod is clamped in the vertical groove and kept vertical under the action of the elastic member.

6. A geological engineering water level monitoring device according to claim 1, characterized in that: The outer cylinder includes a lower cylinder, an upper cylinder, a rotating ring and a water inlet pipe. The upper cylinder is located above the lower cylinder and is coaxial with the lower cylinder, and is fixedly connected to the lower cylinder through a connecting rod; the rotating ring is rotatably installed between the upper cylinder and the lower cylinder and is coaxial with the upper cylinder. The water inlet pipe is located outside the outer cylinder and is installed on the rotating ring and connects the inside and outside of the outer cylinder.

7. A geological engineering water level monitoring device according to claim 6, characterized in that: The conical tip is arranged at the lower end of the lower tube, and the interior is hollow and communicated with the interior of the lower tube. An end cover is arranged at the upper end of the upper tube. The middle section of the cross bar is hinged to the end cover of the upper tube. The elastic member is located on the lower side of the cross bar and connected to the end cover of the upper tube. The upper end of the sensor passes through the end cover of the upper tube and is connected to the wire, and the sensor and the end cover of the upper tube are slidably sealed.

8. A geological engineering water level monitoring device according to claim 1, characterized in that: The supporting plate is in a wave shape extending along the radial direction of the outer cylinder.

9. A geological engineering water level monitoring device according to claim 1, characterized in that: The supporting plate is provided with filter holes.

10. A geological engineering water level monitoring device according to claim 1, characterized in that: A plurality of guide blocks are arranged in the outer cylinder, and the plurality of guide blocks are distributed at intervals around the circumference of the outer cylinder to support the sensor without affecting the water flow to the bottom of the sensor.

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