A monitoring device for groundwater level in underground engineering construction

Abstract

The utility model relates to the field of groundwater level monitoring technology, and in particular to a groundwater level monitoring device in underground engineering construction, including a pipeline deep underground, a plurality of water inlet holes are opened at the bottom end of the pipeline, a circular installation shell capable of vertical movement is installed in the middle of the pipeline, the bottom end of the pipeline is concave, and a float is installed in the concave part. The advantages of the utility model are: by setting a pipeline, a plurality of water inlet holes are opened on the outer wall of the bottom end, and when used, holes are drilled in the ground in advance, and the pipeline is inserted therein, so that groundwater enters the interior of the pipeline along the water inlet holes, and the float provides buoyancy to the circular installation shell, so that the circular installation shell floats above the water surface, and at the same time, the fixing box is docked with the mounting seat, and the laser ranging sensor sends a laser to the baffle to measure the distance between the two, and then through the change of the distance between the two, the continuous monitoring of the groundwater level is realized, and the overall structure is simple, which is convenient for popularization and use.

Description

Technical Field

[0001] The utility model relates to the technical field of underground water level monitoring, in particular to an underground water level monitoring device in underground engineering construction. Background Art

[0002] With the rapid development of urban transportation infrastructure in my country, subway station construction monitoring has become particularly important. The underground water level of the subway station foundation pit is one of the important indicators for subway station construction monitoring. It will not only cause deformation of the foundation pit retaining structure but also cause the bottom of the pit to bulge. It is an important factor affecting the subway station foundation pit construction accidents. Therefore, the underground water level must be monitored in real time during construction.

[0003] The existing monitoring of groundwater level basically adopts the principle of water conductivity, and the water level meter is placed in the precipitation well for monitoring. However, this monitoring method has the problems of complex operation, inaccurate results, and discontinuous monitoring results. Therefore, it is necessary to provide a groundwater level monitoring device in underground engineering construction to solve the above problems and monitor the groundwater level quickly and in real time. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a monitoring device for groundwater level in underground engineering construction, which effectively solves the shortcomings of the prior art.

[0005] In order to achieve the above-mentioned purpose, an embodiment of the utility model on one hand provides a groundwater level monitoring device during underground engineering construction, comprising a pipeline deep underground, a plurality of water inlet holes being opened at the bottom end of the pipeline, a circular mounting shell capable of vertical movement being installed in the middle of the pipeline, the bottom end of the circular mounting shell being concave, and a float being installed in the concave part, a baffle being installed on the top surface of the circular mounting shell, a mounting seat being installed at the top of the pipeline, a fixing box matching with the mounting seat being installed on the top of the mounting seat, a laser ranging sensor being installed on the top wall of the fixing box, and a plurality of ventilation holes being opened on both sides of the outer circular surface of the fixing box.

[0006] Preferably, any of the above schemes is that the outer wall of the pipe near the water inlet is sleeved with a filter screen, and the bottom end of the pipe is sleeved with a conical cover, and a plurality of fixed thorns are installed at the edge of the conical cover, and the plurality of fixed thorns are bent upward to penetrate the filter screen and penetrate into the interior of the pipe. The conical cover in this scheme is butt-connected to the bottom end of the pipe, and at the same time, a plurality of fixed thorns are bent upward, and the tips directly pierce the filter screen and the pipe, so that the conical cover is stably installed at the bottom end of the pipe and the filter screen is limited at the same time. When the pipe is installed inside the drilled hole, the filter screen is prevented from moving upward along the outer wall of the pipe, and the filter screen filters the groundwater to prevent the silt contained in the groundwater from clogging the water inlet, and the conical cover prevents the silt from directly entering the interior of the pipe.

[0007] Preferably, any of the above schemes is that the outer circular surface of the circular mounting shell is provided with a plurality of ventilation grooves for air circulation. By using this scheme, after the pipeline is installed in place, the circular mounting shell can be directly placed into the interior of the pipeline. The plurality of ventilation grooves facilitate the circulation of air between the upper and lower positions of the circular mounting shell, so that the circular mounting shell can quickly fall along the interior of the pipeline and enter the bottom position of the pipeline. At the same time, the float provides sufficient buoyancy for the circular mounting shell, so that the circular mounting shell floats above the surface of the groundwater.

[0008] Preferably, any of the above schemes is that the middle part of the mounting seat is tilted upward and sleeved on the top of the pipe, and two adjusting bolts are installed at the edge of the bottom end of the mounting seat, and the bottom ends of multiple adjusting bolts are installed with supporting pads. By rotating multiple adjusting bolts, the mounting seat can be placed horizontally. When the fixing box is installed in place, the laser ranging sensor can be vertically downward toward the baffle, and then used to measure the distance between the two. In the later stage, the groundwater level is monitored by the change in the distance between the two.

[0009] Preferably, any of the above schemes is that an air guide box is installed on the outer circular surface of the fixed box near the vent hole, and the openings of the two air guide boxes are facing. By using this scheme, it is convenient to block the positions of multiple vent holes. At the same time, the openings of the two air guide boxes face downward, thereby preventing external rainwater from entering the interior of the fixed box while ensuring air circulation.

[0010] Preferably, in any of the above schemes, an exhaust fan is installed inside the fixed box near an air guide box, and the exhaust fan faces the laser ranging sensor. This scheme facilitates the operation of the exhaust fan to drive external air into the interior of the fixed box, thereby facilitating the removal of water vapor inside the fixed box and preventing water vapor inside the pipe from rising and accumulating inside the fixed box.

[0011] The utility model has the following advantages:

[0012] 1. The monitoring device for groundwater level in underground engineering construction is provided with a plurality of water inlet holes on the outer wall at the bottom by setting up a pipeline. When in use, a hole is drilled in the ground in advance and the pipeline is inserted therein, so that groundwater enters the interior of the pipeline along the water inlet holes. The circular mounting shell of the float position provides buoyancy so that the circular mounting shell floats on the water surface. At the same time, the fixing box is docked with the mounting seat, and the laser ranging sensor sends a laser to the baffle to measure the distance between the two. Then, through the change of the distance between the two, continuous monitoring of the groundwater level is realized. In addition, the overall structure is simple and convenient for popularization and use.

[0013] 2. The groundwater level monitoring device during the construction of the underground project is equipped with a pipe, a conical cover and a filter. The conical cover is installed at the bottom of the pipe, and the filter is wrapped around the outer wall of multiple water inlet holes. When the pipe enters the borehole, the conical cover prevents mud and sand from entering the inside of the pipe, while the filter blocks the mud and sand to prevent the mud and sand from clogging multiple water inlet holes, thereby ensuring that groundwater enters the inside of the pipe.

[0014] 3. The groundwater level monitoring device during the construction of the underground project is provided with a fixed box, the outer circumferential surface of which is provided with a plurality of air inlet holes, and an exhaust fan is installed inside the fixed box. When the exhaust fan is powered on, external air is driven into the interior of the fixed box, so that the water vapor inside the fixed box can be taken out. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the cutaway structure of the utility model as a whole;

[0017] Figure 3 It is a schematic diagram of the explosion structure of the pipeline and the conical cover of the utility model;

[0018] Figure 4 This is a schematic diagram of the mounting seat structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the cutaway structure of the fixing box of the utility model;

[0020] Figure 6 It is a schematic diagram of the circular installation shell structure of the utility model.

[0021] In the figure: 1-pipe, 2-support pad, 3-adjusting bolt, 4-fixing box, 5-air guide box, 6-mounting seat, 7-filter, 8-conical cover, 9-laser ranging sensor, 10-exhaust fan, 11-vent, 12-baffle, 13-float, 14-circular mounting shell, 15-water inlet, 16-vent groove. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0023] like Figures 1 to 6As shown, a device for monitoring groundwater level in underground engineering construction comprises a pipe 1 deep underground, a plurality of water inlet holes 15 are provided at the bottom end of the pipe 1, a circular mounting shell 14 capable of vertical movement is installed in the middle of the pipe 1, the bottom end of the circular mounting shell 14 is concave, and a float 13 is installed at the concave part, a baffle 12 is installed on the top surface of the circular mounting shell 14, a mounting seat 6 is installed at the top end of the pipe 1, a fixing box 4 matched with the mounting seat 6 is installed on the top of the mounting seat 6, a laser ranging sensor 9 is installed on the top wall of the fixing box 4, and a plurality of ventilation holes 11 are provided on both sides of the outer circumferential surface of the fixing box 4.

[0024] A filter screen 7 is sleeved and connected to the outer wall of the pipe 1 near the water inlet hole 15, and a conical cover 8 is sleeved and connected to the bottom end of the pipe 1. A plurality of fixed thorns are installed at the edge of the conical cover 8. The plurality of fixed thorns are bent upward to penetrate the filter screen 7 and penetrate into the interior of the pipe 1. As an optional technical solution of the utility model, the conical cover 8 is butt-connected to the bottom end of the pipe 1, and at the same time, a plurality of fixed thorns are bent upward, and the tips directly penetrate the filter screen 7 and the pipe 1, so that the conical cover 8 is stably installed at the bottom end of the pipe 1, and at the same time, the filter screen 7 is limited. When the pipe 1 is installed inside the drilled hole, the filter screen 7 is prevented from moving upward along the outer wall of the pipe 1, and the filter screen 7 filters the groundwater to prevent the silt contained in the groundwater from clogging the water inlet hole 15. The conical cover 8 prevents the silt from directly entering the interior of the pipe 1.

[0025] The outer circumferential surface of the circular mounting shell 14 is provided with a plurality of ventilation grooves 16 for air circulation, which is an optional technical solution of the utility model. This makes it convenient to directly put the circular mounting shell 14 into the interior of the pipeline 1 after the pipeline 1 is installed in place. The plurality of ventilation grooves 16 facilitate the circulation of air in the upper and lower positions of the circular mounting shell 14, so that the circular mounting shell 14 can fall quickly along the interior of the pipeline 1 and enter the bottom position of the pipeline 1. At the same time, the float 13 provides sufficient buoyancy for the circular mounting shell 14, so that the circular mounting shell 14 floats above the surface of the groundwater.

[0026] The middle part of the mounting seat 6 is tilted upward and is sleeved on the top of the pipe 1. Two adjusting bolts 3 are installed at the edge of the bottom end of the mounting seat 6. The bottom ends of multiple adjusting bolts 3 are installed with supporting pads 2. As an optional technical solution of the utility model, multiple adjusting bolts 3 are rotated in this way to facilitate the horizontal placement of the mounting seat 6. When the fixing box 4 is installed in place, the laser ranging sensor 9 can be vertically downward toward the baffle 12, and then used to measure the distance between the two. In the later stage, the groundwater level is monitored by the change in the distance between the two.

[0027] An air guide box 5 is installed on the outer circular surface of the fixed box 4 near the vent hole 11. The openings of the two air guide boxes 5 are facing in an optional technical solution of the present invention, which makes it easy to block the positions of multiple vent holes 11. At the same time, the openings of the two air guide boxes 5 face downward, thereby preventing external rainwater from entering the interior of the fixed box 4 while ensuring air circulation.

[0028] An exhaust fan 10 is installed inside the fixed box 4 near an air guide box 5, and the exhaust fan 10 faces the laser ranging sensor 9. As an optional technical solution of the utility model, it is convenient to power on the exhaust fan 10 to drive external air into the interior of the fixed box 4, so as to bring out the water vapor inside the fixed box 4 and prevent the water vapor inside the pipeline 1 from rising and accumulating inside the fixed box 4.

[0029] The monitoring device for groundwater level in underground engineering construction requires the following steps when used:

[0030] 1) When in use, use a drilling machine to construct vertical holes on the ground;

[0031] 2) Install the conical cover 8 and the filter screen 7 at the bottom end of the pipe 1 and fix them by a plurality of fixing thorns;

[0032] 3) Install the pipe inside the drilled hole, and then install the mounting base 6 on the top of the pipe 1;

[0033] 4) Rotate the six adjusting bolts 3 and use the three supporting pads 2 to stably support the mounting base 6 so that the mounting base 6 remains relatively horizontal;

[0034] 5) Install the fixing box 4 on the top of the mounting seat 6 to complete the installation of the device.

[0035] In summary, when the user uses it, by setting up the pipe 1, the outer wall of the bottom end of the pipe 1 is provided with a plurality of water inlet holes 15. When in use, a hole is drilled in the ground in advance, and the pipe 1 is inserted therein, and then the groundwater enters the inside of the pipe 1 along the water inlet hole 15, and the float 13 provides buoyancy to the circular mounting shell 14, so that the circular mounting shell 14 floats on the water surface, and at the same time the fixing box 4 is docked with the mounting seat 6, and the laser ranging sensor 9 sends a laser to the baffle 12 to measure the distance between the two, and then through the change of the distance between the two, the continuous monitoring of the groundwater level is realized, and the overall structure is simple, which is convenient for promotion and use, and then through the pipe 1. A conical cover 8 and a filter screen 7. The conical cover 8 is installed at the bottom end of the pipe 1. The filter screen 7 is coated on the outer wall of the multiple water inlet holes 15. When the pipe 1 enters the borehole, the conical cover 8 prevents the mud and sand from entering the inside of the pipe 1, while the filter screen 7 blocks the mud and sand to prevent the mud and sand from blocking the multiple water inlet holes 15, thereby ensuring that groundwater enters the inside of the pipe 1. Finally, a fixed box 4 is provided. The outer circumferential surface of the fixed box 4 is provided with multiple air inlet holes 11. At the same time, an exhaust fan 10 is installed inside the fixed box 4. When the exhaust fan 10 is powered on, the external air is driven into the inside of the fixed box 4, so that the water vapor inside the fixed box 4 can be taken out.

[0036] Although the 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 device for monitoring groundwater level during underground engineering construction, characterized in that: The invention comprises a pipe (1) extending underground, wherein a plurality of water inlet holes (15) are provided at the bottom end of the pipe (1), a circular mounting shell (14) capable of vertical movement is installed in the middle of the pipe (1), the bottom end of the circular mounting shell (14) is concave, and a float (13) is installed in the concave part, a baffle (12) is installed on the top surface of the circular mounting shell (14), a mounting seat (6) is installed at the top end of the pipe (1), a fixing box (4) matching with the mounting seat (6) is installed on the top of the mounting seat (6), a laser distance measuring sensor (9) is installed on the top wall of the fixing box (4), and a plurality of ventilation holes (11) are provided on both sides of the outer circumferential surface of the fixing box (4).

2. The device for monitoring groundwater level during underground engineering construction according to claim 1, characterized in that: The outer wall of the pipe (1) near the water inlet hole (15) is sleeve-connected with a filter screen (7), and the bottom end of the pipe (1) is sleeve-connected with a conical cover (8). A plurality of fixing spikes are installed at the edge of the conical cover (8), and the plurality of fixing spikes are bent upward to penetrate the filter screen (7) and penetrate into the interior of the pipe (1).

3. The device for monitoring groundwater level during underground engineering construction according to claim 2, characterized in that: The outer circumferential surface of the circular mounting shell (14) is provided with a plurality of ventilation grooves (16) for air circulation.

4. The device for monitoring groundwater level during underground engineering construction according to claim 3, characterized in that: The middle part of the mounting seat (6) is tilted upward and sleeved on the top of the pipe (1); two adjusting bolts (3) are installed at the edge of the bottom end of the mounting seat (6); and supporting pads (2) are installed at the bottom ends of the plurality of adjusting bolts (3).

5. The device for monitoring groundwater level during underground engineering construction according to claim 4, characterized in that: An air guide box (5) is installed on the outer circumferential surface of the fixing box (4) close to the vent hole (11), and the openings of the two air guide boxes (5) are facing in the direction of.

6. The device for monitoring groundwater level during underground engineering construction according to claim 5, characterized in that: An exhaust fan (10) is installed inside the fixing box (4) near an air guide box (5), and the exhaust fan (10) faces the laser distance measuring sensor (9).

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