A geotechnical engineering investigation drilling water level measuring instrument

Abstract

The application provides a geotechnical engineering investigation drilling water level measuring instrument and relates to the technical field of engineering investigation. The geotechnical engineering investigation drilling water level measuring instrument comprises a moving support, a guiding mechanism and a warming mechanism connected with the guiding mechanism are arranged on the moving support, a measuring mechanism is arranged above the guiding mechanism, the guiding mechanism comprises a vertical guiding pipe penetrating through the upper surface of the moving support and internally provided with an installation groove, the warming mechanism comprises a warming water storage tank and a spiral water pipe connected with the warming water storage tank, and the measuring mechanism comprises a lifting assembly and a water level sensor connected with the lifting assembly; the spiral water pipe extends into the installation groove in the vertical guiding pipe, and the water level sensor moves up and down along the inner wall of the vertical guiding pipe. The application solves the problem that the existing water level detection equipment such as a water level sensor or a steel ruler water level gauge is easily affected by the environment and temperature in the drilling hole, thereby leading to inaccurate measurement data.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of engineering survey technology, in particular to a geotechnical engineering survey drilling water level measuring instrument. BACKGROUND

[0002] The engineering survey is the primary link of the basic construction, and the purpose is mainly to study and find out the geological and geographical environment characteristics of the engineering construction site. Good engineering survey, especially the early survey, can make a detailed argument for the construction site, and then can ensure the reasonable progress of the project, and ultimately promote the project to achieve the best economic, social and environmental benefits.

[0003] At present, when detecting the water level in the geotechnical engineering survey drilling, a water level sensor or a steel ruler water level gauge and other equipment are often used for direct measurement. This way will show that the measurement data is not accurate in actual application. Specifically, because the environment in the drilling is uncertain and complex, the water level sensor or the steel ruler water level gauge may not be able to move downward in a straight line, so that the water level sensor or the steel ruler water level gauge cannot normally descend to the final water level position, thereby causing inaccurate measurement structure. At the same time, under the action of the uncertain and complex environment in the drilling, the temperature change is large, that is, the temperature may be too low or the temperature difference is too large, which will affect the working performance and detection effect of the water level sensor, thereby also causing the measured data to be not accurate. SUMMARY

[0004] The purpose of the present application is to provide a geotechnical engineering survey drilling water level measuring instrument to solve the problem that the existing water level sensor or steel ruler water level gauge and other water level detection equipment is easily affected by the negative effects of the drilling environment and temperature, thereby causing inaccurate measurement data.

[0005] The present application is implemented by using the following technical solutions:

[0006] A geotechnical engineering survey drilling water level measuring instrument, comprising a moving support, a guide mechanism and a warming mechanism connected with the guide mechanism are arranged on the moving support, a measuring mechanism is arranged above the guide mechanism, wherein: the guide mechanism comprises a vertical guide pipe penetrating through the upper surface of the moving support and internally provided with an installation slot, the warming mechanism comprises a warming water storage tank and a spiral water pipe connected with the warming water storage tank, and the measuring mechanism comprises a lifting assembly and a water level sensor connected with the lifting assembly; the spiral water pipe extends into the installation slot inside the vertical guide pipe, and the water level sensor moves up and down along the inner wall of the vertical guide pipe.

[0007] In the measuring instrument, the position of the measuring instrument as a whole can be moved by moving the support, so that the measuring instrument can be quickly placed in the working position; the water level in the drill hole can be detected by the water level sensor in the measuring mechanism; the water level sensor can be vertically guided by the guide mechanism, that is, the water level sensor always moves upward or downward in the drill hole without position deviation, so that the water level sensor can smoothly reach the specified measurement position; the water to be measured in the guide mechanism can be indirectly heated by the heating mechanism, that is, the water temperature of the water to be measured contacted by the water level sensor is closer to the normal temperature of the water outside the drill hole, so that the influence of the excessively low water temperature or excessively large temperature difference in the drill hole on the detection effect can be effectively reduced. Therefore, compared with the traditional water level sensor and the steel ruler water level gauge and other water level detection equipment, the measuring instrument successfully improves the situation that the detection equipment is easily affected by the negative influence of the environment and temperature in the drill hole, so that the measurement data is more accurate.

[0008] Further, the guide mechanism further comprises a second fixed plate fixed on the upper surface of the moving support, the second fixed plate is penetrated by a horizontally arranged screw rod, a moving block is threadedly arranged on the outer surface of the screw rod, one end of two adjusting push rods is symmetrically connected to the two side surfaces of the moving block, the other end of the two adjusting push rods is respectively connected to a moving clamping plate, the two moving clamping plates are slidingly installed on the upper surface of the moving support, and the adjacent two ends of the two moving clamping plates are provided with symmetrically arranged arc-shaped clamping plates, and the two arc-shaped clamping plates form clamping on the vertical guide pipe.

[0009] Further, the vertical guide pipe comprises a plurality of detachably connected limiting guide pipes, an installation groove is formed in the inside of each of the plurality of limiting guide pipes, a spiral water pipe is embedded on the inner wall of each installation groove, and the two ends of each spiral water pipe are respectively connected to a quick connector I.

[0010] Further, an outer threaded pipe is formed at the bottom of each of the plurality of limiting guide pipes, and an inner threaded groove is formed at the top of each of the plurality of limiting guide pipes, and the inner threaded groove is matched with the outer threaded pipe.

[0011] Further, a reverse U-shaped support is installed on the upper surface of the moving support, and a heating mechanism is installed on one side of the outer wall of the reverse U-shaped support; the heating mechanism further comprises a water pump, the water inlet of the water pump is connected to the heating water tank through a water inlet pipe I, the water outlet of the water pump is connected to one end of a water guide pipe, the other end of the water guide pipe is provided with a quick connector II, and the quick connector II is connected to the quick connector I connected to one end of the spiral water pipe.

[0012] Further, the other side outer wall of the inverted U-shaped support is provided with a water changing mechanism, the water changing mechanism comprises a drainage pump, one end of a second water inlet pipe is connected with the water inlet of the drainage pump, the other end of the second water inlet pipe is provided with a quick connector three, the quick connector three is connected with the quick connector one connected with the other end of the spiral water pipe, and the water outlet of the drainage pump is connected with a drainage pipe.

[0013] Further, the upper wall of the inverted U-shaped support is provided with a measuring mechanism, the lifting assembly in the measuring mechanism comprises two third fixing plates, one outer side wall of one of the third fixing plates is provided with a servo motor, the output end of the servo motor is connected with a hollow winding shaft, the hollow winding shaft penetrates through the two third fixing plates in rotation, the outer surface of the hollow winding shaft is wound with a cable, and one end of the cable is electrically connected with a water level sensor after penetrating through the upper wall of the inverted U-shaped support.

[0014] Further, the outer side wall of the other third fixing plate is provided with a liquid crystal display screen, and the liquid crystal display screen is electrically connected with the other end of the cable.

[0015] Further, the cable above the water level sensor is sleeved with a circular disc, a plurality of ball bearings are embedded on the circumferential outer wall of the circular disc, and the plurality of ball bearings are in sliding contact with the inner wall of the vertical guide pipe.

[0016] Further, at least one end of each spiral water pipe is a hose.

[0017] The present application has the following beneficial effects:

[0018] The present application has the following beneficial effects:

[0019] In addition, by additionally arranging the water changing mechanism, the measured water in the bottom spiral water pipe can be pumped out in time after being cooled, so that the heated measured water in the upper spiral water pipe can be supplemented in time, thereby effectively reducing the temperature difference of the measured water in the upper and lower limiting guide pipes, and further reducing the influence of the water temperature difference on the measurement result of the water level sensor. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the first perspective view of the water level measuring instrument according to an embodiment of the present application;

[0021] Figure 2 is the second perspective view of the water level measuring instrument according to an embodiment of the present application;

[0022] Figure 3 is the front view of the water level measuring instrument according to an embodiment of the present application;

[0023] Figure 4 is the perspective view of the limiting guide pipe of the water level measuring instrument according to an embodiment of the present application;

[0024] Figure 5 is the top view of the limiting guide pipe of the water level measuring instrument according to an embodiment of the present application;

[0025] Figure 6 is the bottom view of the limiting guide pipe of the water level measuring instrument according to an embodiment of the present application;

[0026] Figure 7 is the installation structure diagram of the screw and the moving clamp plate of the water level measuring instrument according to an embodiment of the present application;

[0027] Figure 8 is the structure diagram of the spiral water pipe of the water level measuring instrument according to an embodiment of the present application;

[0028] Figure 9 is the connection structure diagram of the moving clamp plate and the sliding block of the water level measuring instrument according to an embodiment of the present application;

[0029] Figure 10 is the internal structure diagram of the warming water storage tank of the water level measuring instrument according to an embodiment of the present application;

[0030] Figure 11 is the connection structure diagram of the circular wheel disc and the ball of the water level measuring instrument according to an embodiment of the present application;

[0031] In the figure: 1, mobile support; 2, limit guide pipe; 3, installation groove; 4, spiral water pipe; 5, quick connector one; 6, inverted U-shaped support; 7, warming water storage tank; 8, water pump; 9, heating rod; 10, temperature sensor; 11, water inlet pipe one; 12, water guide pipe; 13, quick connector two; 14, water level sensor; 15, cable; 16, liquid crystal display; 17, drainage pump; 18, water inlet pipe two; 19, quick connector three; 20, drain pipe; 21, fixed plate one; 22, winding roller; 23, fixed plate two; 24, screw rod; 25, moving block; 26, adjusting push rod; 27, moving clamp plate; 28, arc-shaped clamp plate; 29, sliding block; 30, limit sliding slot; 31, external thread pipe; 32, internal thread groove; 33, circular wheel disc; 34, ball; 35, fixed plate three; 36, servo motor; 37, hollow winding shaft. DETAILED DESCRIPTION

[0032] To clearly illustrate the scheme in the present application, further description will be made in combination with the drawings (it is particularly stated that the orientation words such as "upper", "lower", "left", "right", "front", "back" and the like appearing in the present embodiment are indicative definitions for the convenience of description and understanding, and do not represent the limitation of the technical scheme of the present application):

[0033] Please refer to Figures 1 to 11 The present embodiment provides a kind of geotechnical engineering survey drilling water level measuring instrument, including mobile support 1, the mobile support 1 is equipped with guide mechanism and the warming mechanism, water changing mechanism connected with guide mechanism, the upper portion of guide mechanism is equipped with measuring mechanism, specifically:

[0034] For mobile support 1:

[0035] As Figures 1 to 3 Indicated, mobile support 1 includes support plate, four corners on the lower surface of support plate are fixedly connected with support leg respectively, and the bottom end of support leg is installed with pulley;The upper surface of mobile support 1 is fixedly installed with inverted U-shaped support 6, the outer wall on both sides of inverted U-shaped support 6 is fixedly installed with warming mechanism and water changing mechanism respectively, the upper wall of inverted U-shaped support 6 is installed with measuring mechanism, and the upper wall of inverted U-shaped support 6 is equipped with guide mechanism below.Based on the above structure, the position of mobile support 1 can be moved at will, so that the measuring instrument can quickly reach working position.

[0036] As Figure 7 And Figure 9As shown, the center of the mobile support 1 is provided with a circular through hole, and a limiting sliding groove 30 is formed on the upper surface of the mobile support 1 on the left and right sides of the through hole; two fixed plates two 23 distributed in front and back are fixedly installed on the upper surface of the mobile support 1 on the rear side of the through hole, and the fixed plates two 23 are rotatably penetrated by the horizontally arranged T-shaped screw rod 24; the outer surface of the screw rod 24 is threadedly sleeved with a moving block 25, and the left and right two sides of the moving block 25 are symmetrically connected to one end of two adjusting push rods 26; the other end of the two adjusting push rods 26 is respectively rotatably connected to a moving clamp plate 27, and the adjacent two ends of the two moving clamp plates 27 are provided with symmetrically arranged arc-shaped clamp plates 28; the lower surfaces of the two moving clamp plates 27 are fixedly connected with sliding blocks 29, and the two sliding blocks 29 are respectively slidably connected in the corresponding limiting sliding grooves 30. Based on the above structure, by rotating the screw rod 24, the moving block 25 on the screw rod 24 can be driven to move forward and backward, so that the two adjusting push rods 26 can respectively drive the corresponding moving clamp plates 27 to move left and right, so that the two arc-shaped clamp plates 28 can be opened and closed; wherein the sliding can guide and limit the moving clamp plate 27, so that the moving clamp plate 27 can only move linearly in the left and right directions.

[0037] For the guide mechanism:

[0038] As shown in Figures 1 to 3 , the guide mechanism includes a vertical guide pipe penetrating the upper surface of the mobile support 1 through the through hole, and the vertical guide pipe is clamped by the two arc-shaped clamp plates 28; the vertical guide pipe includes two limiting guide pipes 2 connected by threads; the outer surfaces of the two limiting guide pipes 2 are each provided with a vertical scale (not shown in the figure); the outer wall of the limiting guide pipe 2 is made of heat insulation material. Based on the above structure, by adjusting the number of limiting guide pipes 2, the length of the vertical guide pipe can be correspondingly adjusted, so that the measuring instrument can be flexibly applied to water level measurement requirements of different depths; the operator can observe the scale on the limiting guide pipe 2 to quickly measure the actual hole (i.e. into the drill hole) length of the vertical guide pipe; the heat insulation material can reduce the heat loss in the limiting guide pipe 2.

[0039] As shown in Figure 5 and Figure 6 , the bottom of each of the two limiting guide pipes 2 is fixedly connected with an external threaded pipe 31, and the top of each of the two limiting guide pipes 2 is provided with an internal threaded groove 32, and the internal threaded groove 32 is matched with the external threaded pipe 31. Based on the above structure, the two limiting guide pipes 2 can be spliced together by the threaded connection relationship between the external threaded pipe 31 and the internal threaded groove 32 to form a vertical guide pipe, and the splicing order is not limited.

[0040] As shown in Figures 4 to 6 , and Figure 8As shown, the inside of each of the two limiting guide pipes 2 is provided with an annular mounting groove 3, the inner wall of each mounting groove 3 is embedded with a spiral water pipe 4, the upper and lower ends of each spiral water pipe 4 penetrate the mounting groove 3 and are respectively connected to a quick connector I 5, and the upper and lower adjacent two quick connector I 5 are connected through threads. At least one end of each spiral water pipe 4 is a hose. Based on the above structure, when the two limiting guide pipes 2 are spliced, the upper and lower adjacent two quick connector I 5 need to be screwed first, and then the two limiting guide pipes 2 are rotated to successfully connect the outer threaded pipe 31 at the bottom of the upper limiting guide pipe 2 to the inner threaded groove 32 at the top of the lower limiting guide pipe 2. Since at least one end of each spiral water pipe 4 is a hose, the spiral water pipe 4 can rotate to a certain extent with the rotation of the limiting guide pipe 2, so as not to affect the splicing process.

[0041] For the warming mechanism:

[0042] As shown in Figures 1 to 3 , the warming mechanism includes a warming water tank 7, which is fixedly installed on the left outer wall of the inverted U-shaped support 6; the outer wall of the inverted U-shaped support 6 below the warming water tank 7 is fixedly installed with a water pump 8, and the water inlet of the water pump 8 is connected with the warming water tank 7 through a water inlet pipe I 11; the water outlet of the water pump 8 is connected with one end of a water guide pipe 12, and the other end of the water guide pipe 12 is installed with a quick connector II 13, which is connected with the quick connector I 5 connected to the upper end of the spiral water pipe 4 in the upper limiting guide pipe 2. Based on the above structure, hot water or warm water can be formed in the warming water tank 7, which can enter the spiral water pipe 4 in the upper limiting guide pipe 2 through the water guide pipe 12 under the action of the water pump 8, and then flow into the spiral water pipe 4 in the lower limiting guide pipe 2, so as to realize heat transfer to the two limiting guide pipes 2, that is, to realize the indirect heating effect of the water to be measured in the vertical guide pipe.

[0043] As shown in Figure 10 , the inner wall of the warming water tank 7 is fixedly installed with a heating rod 9 and a temperature sensor 10; the outer wall of the warming water tank 7 is also fixedly installed with a display (not shown in the figure), which is electrically connected with the temperature sensor 10. Based on the above structure, the heating rod 9 can heat the water in the warming water tank 7, the temperature sensor 10 can detect the temperature of the water in the warming water tank 7 in real time to adjust the heating degree of the heating rod 9, and the display can display the temperature of the water in the warming water tank 7 to facilitate the operator to intuitively understand.

[0044] For the water changing mechanism:

[0045] As shown in Figures 1 to 3As shown, the water exchange mechanism includes a drain pump 17, which is fixedly mounted on the right outer wall of the inverted U-shaped bracket 6. The water inlet of the drain pump 17 is connected to one end of the second water inlet pipe 18, and the other end of the second water inlet pipe 18 is installed with a quick connector 3 19. The quick connector 3 19 is connected to the quick connector 1 5 connected to the lower end of the spiral water pipe 4 in the lower limiting guide pipe 2. The water outlet of the drain pump 17 is connected to the drain pipe 20. Based on the above structure, by starting the drain pump 17, the cooled water in the spiral water pipe 4 in the lower limiting guide pipe 2 can be pumped out to provide space for the entry of new hot or warm water, facilitating the timely downward replenishment of the heated water to be tested in the upper spiral water pipe 4, thereby effectively reducing the temperature difference of the water to be tested at different positions in the vertical guide pipe.

[0046] In addition, if Figures 1 to 3 As shown, in the heating mechanism and water exchange mechanism, a fixing plate 1 21 is fixedly mounted on both sides of the outer wall of the inverted U-shaped bracket 6. A winding roller 22 is fixedly connected to the front outer wall of the fixing plate 1 21. The water conduit 12 and the second water inlet pipe 18 are respectively wound and connected to the outer surface of the corresponding winding roller 22. Based on this structure, the water conduit 12 and the second water inlet pipe 18 can be properly stored.

[0047] For measurement agencies:

[0048] like Figures 1 to 3 As shown, the measuring mechanism includes a lifting assembly comprising two fixed plates 35, disposed left and right. The two fixed plates 35 are fixedly mounted on the upper wall of an inverted U-shaped bracket 6. A servo motor 36 is fixedly mounted on the outer wall of the right fixed plate 35. The output end of the servo motor 36 is fixedly connected to a hollow reel 37, which rotates through the two fixed plates 35. A cable 15 is wound around the outer surface of the hollow reel 37. One end of the cable 15 extends downward through the upper wall of the inverted U-shaped bracket 6 and is electrically connected to the water level sensor 14. An LCD screen 16 is mounted on the outer wall of the left fixed plate 35 and is electrically connected to the other end of the cable 15. Based on this structure, the rotation of the servo motor 36 can cause the water level sensor 14 to rise or fall via the cable 15, thereby causing the water level sensor 14 to reach a designated measurement position. The LCD screen 16 can display the water level data measured by the water level sensor 14 in real time.

[0049] like Figures 1 to 3 ,as well as Figure 11As shown, the cable 15 above the water level sensor 14 is sleeved with a circular disc 33, the outer wall of the circular disc 33 is embedded with a plurality of ball bearings 34, and the plurality of ball bearings 34 are in sliding contact with the inner wall of the vertical guide pipe. Based on the above structure, when the water level sensor 14 is lowered into the vertical guide pipe, the vertical guide pipe can guide the water level sensor 14, that is, the water level sensor 14 always moves upward or downward, and the position offset does not occur, so that the water level sensor 14 can smoothly reach the designated measurement position; through the sliding contact of the ball bearings 34 and the inner wall of the vertical guide pipe, the shaking amplitude of the water level sensor 14 can be effectively reduced, and the up-down movement of the water level sensor 14 is more stable.

[0050] Based on the above working structure and working principle, the working process of the embodiment can be as follows:

[0051] Firstly, the preparation work before measurement is performed: ①push the moving support 1, and move the water level measuring instrument to the working position; ②take out two limit guide pipes 2, connect the quick connector one 5 at the lower end of the lower limit guide pipe 2 with the quick connector three 19, and then splice the two (in other embodiments, a proper number of limit guide pipes 2 can be selected according to different drilling depths) limit guide pipes 2 to form a vertical guide pipe; when splicing the two limit guide pipes 2, first pass the lower limit guide pipe 2 through the upper surface of the moving support 1, then connect the adjacent two quick connector one 5 in the two limit guide pipes 2 together, and then rotate the upper limit guide pipe 2 so that the outer threaded pipe 31 at the bottom of the upper limit guide pipe 2 is successfully connected into the inner threaded groove 32 at the top of the lower limit guide pipe 2; ③through the through hole opened on the upper surface of the moving support 1, lower the vertical guide pipe into the drill hole until the lower end of the vertical guide pipe touches the bottom, and then fix the position of the vertical guide pipe; when fixing the position of the vertical guide pipe, first rotate the screw in a direction, so that the moving block 25 moves backward and drives the two adjusting push rods 26 to move, under the action of the two adjusting push rods 26, the two moving clamping plates 27 move close to each other, and then the two arc-shaped clamping plates 28 continuously move close to each other until the two arc-shaped clamping plates 28 can clampingly fix the vertical guide pipe; it should be noted that when lowering the vertical guide pipe, the water inlet pipe two 18 wound on the winding roller 22 should be loosened in time to prevent damage between the water inlet pipe two 18 and the quick connector three 19 due to pulling; ④connect the quick connector one 5 at the upper end of the upper limit guide pipe 2 with the quick connector two 13, and start the warming water tank 7 to heat the water therein.

[0052] Then, the work in the measurement is performed: ① start the water pump 8, the warm water in the warm water storage tank 7 is pumped into the spiral pipe 4 in the vertical guide pipe, under the heat transfer of the warm water, the water temperature of the water to be measured in the vertical guide pipe is increased; wherein, the water temperature can be observed through the display on the outer wall of the warm water storage tank 7; start the servo motor 36, the servo motor 36 works to drive the hollow winding shaft 37 to rotate, so that the cable 15 is loosened, and the water level sensor 14 is lowered; ③ after the water level sensor 14 is lowered into the vertical guide pipe, continue to loosen the cable 15, so that the water level sensor 14 moves down in the vertical guide pipe, until the water level sensor 14 touches the bottom, which represents that it has reached the water level measurement position, at this time, the water level data can be read through the liquid crystal display screen 16. During the downward movement of the water level sensor 14, the drain pump 17 can be started to pump the water in the spiral pipe 4 below the vertical guide pipe to the drain pipe 20 in time after cooling, so as to reduce the temperature difference of the water to be measured in the vertical guide pipe at different positions.

[0053] Finally, the arrangement work after the measurement is completed: ① reverse start the servo motor 36, the servo motor 36 works to drive the hollow winding shaft 37 to rotate, so that the cable 15 is tightened, and the water level sensor 14 is pulled up to reset; ② close the water pump 8, start or make the drain pump 17 work continuously, until the water in the two spiral pipes 4 is completely drained, and then close the drain pump 17; ③ reverse rotate the screw rod 24, so that the two arc-shaped clamping plates 28 move away from each other, thereby releasing the vertical guide pipe; ④ first rotate the upper limit guide pipe 2, after the two limit guide pipes 2 are separated, disconnect the two quick connectors one 5 adjacent to each other, and then take out the lower limit guide pipe 2; ⑤ push the moving bracket 1, and reset the measuring instrument.

[0054] As described above, compared with the traditional water level sensor 14 and the steel ruler water level gauge and other water level detection equipment, the water level measuring instrument described in the embodiment successfully improves the situation that the detection equipment is easily affected by the negative effects of the environment and temperature in the drilling hole, so that the measurement data is more accurate.

[0055] Of course, the above content is only the preferred embodiment of the present application, and cannot be considered as limiting the scope of the embodiments of the present application. The present application is also not limited to the above examples, and the equivalent changes and improvements made by those skilled in the art within the essential scope of the present application should be attributed to the patent coverage range of the present application.

Claims

1. A geotechnical engineering survey borehole water level measuring instrument, comprising a mobile bracket (1), characterized in that: The movable bracket (1) is provided with a guide mechanism and a heating mechanism connected to the guide mechanism, and a measuring mechanism is provided above the guide mechanism, wherein: The guide mechanism comprises a vertical guide tube penetrating the upper surface of the movable bracket (1) and having an installation groove (3) formed therein; the heating mechanism comprises a heating water storage tank (7) and a spiral water pipe (4) connected to the heating water storage tank (7); and the measuring mechanism comprises a lifting assembly and a water level sensor (14) connected to the lifting assembly; the spiral water pipe (4) extends into the installation groove (3) inside the vertical guide tube, and the water level sensor (14) moves up and down along the inner wall of the vertical guide tube; An inverted U-shaped bracket (6) is installed on the upper surface of the movable bracket (1), and a measuring mechanism is installed on the upper wall of the inverted U-shaped bracket (6). The lifting component in the measuring mechanism includes two fixed plates (35), and a servo motor (36) is installed on the outer wall of one of the fixed plates (35). The output end of the servo motor (36) is connected to a hollow reel (37). The hollow reel (37) rotates and passes through the two fixed plates (35). A cable (15) is wound around the outer surface of the hollow reel (37). One end of the cable (15) hangs down and passes through the upper wall of the inverted U-shaped bracket (6) and is electrically connected to a water level sensor (14). Of the two fixing plates three (35), a liquid crystal display screen (16) is mounted on the outer side wall of the other fixing plate three (35), and the liquid crystal display screen (16) is electrically connected to the other end of the cable (15); A circular wheel (33) is sleeved on the cable (15) above the water level sensor (14), and a plurality of balls (34) are embedded on the outer wall of the circular wheel (33), and the plurality of balls (34) are in sliding contact with the inner wall of the vertical guide tube; The vertical guide tube comprises a plurality of detachably connected limiting guide tubes (2), each of the plurality of limiting guide tubes (2) having an installation groove (3) formed therein, a spiral water pipe (4) being embedded on the inner wall of each installation groove (3), and both ends of each spiral water pipe (4) being respectively connected to a quick connector (5), and two upper and lower adjacent quick connectors (5) being connected to each other; A heating mechanism is installed on one side outer wall of the inverted U-shaped bracket (6); the heating mechanism also includes a water pump (8), the water inlet of the water pump (8) is connected to the heating water storage tank (7) through a water inlet pipe (11), the water outlet of the water pump (8) is connected to one end of a water guide pipe (12), and a quick connector (13) is installed at the other end of the water guide pipe (12), and the quick connector (13) is connected to a quick connector (5) connected to one end of the spiral water pipe (4).

2. The geotechnical engineering survey borehole water level measuring instrument according to claim 1, characterized in that: The guide mechanism further comprises a second fixing plate (23) fixed on the upper surface of the movable bracket (1), the second fixing plate (23) being rotated and penetrated by a horizontally arranged screw rod (24), a movable block (25) being sleeved on the threaded outer surface of the screw rod (24), two side surfaces of the movable block (25) being symmetrically rotated to connect one end of two adjusting push rods (26), the other ends of the two adjusting push rods (26) being respectively rotated to connect a movable clamping plate (27), the two movable clamping plates (27) being both slidably mounted on the upper surface of the movable bracket (1), symmetrical arc clamping plates (28) being provided at adjacent ends of the two movable clamping plates (27), and the two arc clamping plates (28) clamping the vertical guide tube.

3. The geotechnical engineering survey borehole water level measuring instrument according to claim 1, characterized in that: The bottoms of the plurality of position-limiting guide tubes (2) are each provided with an external threaded tube (31), and the tops of the plurality of position-limiting guide tubes (2) are each provided with an internal threaded groove (32), and the internal threaded groove (32) is adapted to the external threaded tube (31).

4. The geotechnical engineering survey borehole water level measuring instrument according to claim 1, characterized in that: A water changing mechanism is installed on the outer wall of the other side of the inverted U-shaped bracket (6), and the water changing mechanism includes a drainage pump (17). The water inlet of the drainage pump (17) is connected to one end of the second water inlet pipe (18). The other end of the second water inlet pipe (18) is installed with a quick connector (19). The quick connector (19) is connected to the quick connector (5) connected to the other end of the spiral water pipe (4). The water outlet of the drainage pump (17) is connected to the drainage pipe (20).

5. The geotechnical engineering investigation borehole water level measuring instrument according to claim 1, characterized in that: At least one end of each spiral water pipe (4) is divided into a soft tube.

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