Hydrogeological surveying device

Abstract

The application relates to the technical field of address surveying equipment, and particularly discloses a hydrogeological surveying device which comprises a unwinding mechanism, a suspension rope and a sampling mechanism, the sampling mechanism comprises a connecting plate, a sampling ring cylinder and a control assembly, a detection space is formed in the inner side of the sampling ring cylinder, the connecting plate is fixedly connected with one end of the sampling ring cylinder, a liquid sensor is fixedly arranged in the detection space, the unwinding mechanism is connected with the connecting plate through the suspension rope, a collecting cavity is arranged on the sampling ring cylinder, and a scale is arranged on the suspension rope; a first air pressure hole and a second air pressure hole which penetrate through the thickness of the connecting plate are arranged on the connecting plate, the first air pressure hole is communicated with the detection space, a sampling hole is arranged at the end of the sampling ring cylinder which is far away from the connecting plate, the second air pressure hole and the sampling hole are both communicated with the collecting cavity, and the control assembly is used for simultaneously opening or closing the sampling hole and the second air pressure hole. The application has high accuracy in measuring the water level height of a surveying well.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of geological exploration equipment, and in particular to a hydrogeological exploration device. BACKGROUND

[0002] Hydrogeological exploration, also known as hydrogeological surveying, refers to hydrogeological investigation and research work for identifying the hydrogeological conditions of an area. It aims to understand the causes, distribution, and movement rules of groundwater and surface water. It provides a basis for rational exploitation and utilization of water resources, correct design and construction of foundation and piling engineering, and identification of underground water burial conditions and erosion, determination of possible changes and impacts of underground water during construction and use of buildings, and provision of prevention and control recommendations.

[0003] In hydrogeological exploration work, it is necessary to use drilling or exploration pits (exploration wells) to expose underground water levels. For underground water with multiple levels, multiple length exploration pit casings are often arranged in parallel to form multi-point hole exploration, with each exploration pit casing corresponding to a water layer, so that personnel can subsequently insert the exploration device into the exploration water level. Underground water may change due to artificial factors, as well as climate and river diversion, and other natural factors, so exploration personnel will regularly conduct exploration of the water level.

[0004] A hydrogeological multi-layer underground water level exploration device is disclosed in Chinese patent document CN221549794U, which includes a shell and a handle. The handle is fixed to the top of the shell. A monitoring assembly is arranged inside the shell. A detachable extraction assembly is arranged outside the monitoring assembly. The monitoring assembly includes a liquid level sensing probe. The extraction assembly includes a connecting sleeve and a mounting sleeve in the shape of a cylinder. The liquid level sensing probe is located in the connecting sleeve. A rotating shaft is arranged in the shell. A scale rope is fixedly wound around the rotating shaft. One end of the scale rope is fixedly connected to a connecting plate. The connecting plate and the connecting sleeve are fixedly connected. A support sleeve is arranged below the shell. The scale rope passes through the support sleeve. A micro electric telescopic rod is fixedly arranged on the outer wall of the support sleeve. The first end of the micro electric telescopic rod penetrates the support sleeve. The first end of the micro electric telescopic rod is fixedly arranged with a push plate. When the liquid level sensing probe contacts the underground water, the micro electric telescopic rod is started and pushes the push plate. The push plate tightly abuts against the scale rope. At this time, the part of the scale rope between the connecting plate and the support sleeve is relatively fixed. The worker can know the water level of the underground water by checking the scale of the clamped part on the current scale rope. A cavity is formed in the connecting sleeve. A relief hole is formed in the inner side of the connecting sleeve. A one-way valve is arranged at the relief hole. Water can enter the cavity of the connecting sleeve through the relief hole.

[0005] According to the scheme and the description of the accompanying drawings, when the bottom end of the connecting sleeve is in contact with the water surface with the one-way valve closed, the space inside the connecting sleeve of the liquid level sensing probe is a relatively closed space, and under the action of air pressure, the water flow entering the inside of the connecting sleeve needs to overcome the resistance of the opening one-way valve. In actual operation, the density of water, the density of air at the bottom of the well, and the friction force borne by the valve core of the one-way valve are all factors that affect when the water actually enters the inside of the connecting sleeve. Therefore, when the liquid level sensing probe actually contacts the water, the relative positional relationship between the external water level and the connecting sleeve also has great uncertainty, thereby affecting the accuracy of the water level measurement. SUMMARY

[0006] The present application provides a kind of hydrogeology survey device, to solve the problem of low water level measurement accuracy in the related art.

[0007] The hydrogeology survey device of the present application comprises a pay-off mechanism, a suspension rope and a sampling mechanism. The sampling mechanism comprises a connecting plate and a sampling ring cylinder. A detection space is formed inside the sampling ring cylinder. The connecting plate and one end of the sampling ring cylinder are fixedly connected. A liquid sensor is fixedly connected to the connecting plate and inside the detection space. The pay-off mechanism is connected to the connecting plate through the suspension rope. A collection cavity is formed in the sampling ring cylinder. A scale is provided on the suspension rope. The suspension rope and the sampling ring cylinder are connected to opposite sides of the connecting plate. First and second air pressure holes are formed in the connecting plate and pass through the thickness of the plate. The first air pressure hole is in communication with the detection space. A sampling hole is formed in the end of the sampling ring cylinder away from the connecting plate. The second air pressure hole and the sampling hole are both in communication with the collection cavity. The sampling mechanism further comprises a control assembly for controlling the opening and closing of the sampling hole and the second air pressure hole.

[0008] The effect is that the pay-off mechanism is on the ground. The sampling mechanism is connected to the pay-off mechanism through the suspension rope and is lowered into the exploration well. The suspension rope is located at the top end of the sampling ring cylinder. When the bottom end of the sampling ring cylinder is in contact with the water surface, the bottom of the detection space is closed by water. However, due to the presence of the first air pressure hole, the air pressure inside the detection space and outside the sampling ring cylinder can be kept consistent. Therefore, when the liquid sensor is in contact with the water surface, the water level inside the detection space is basically consistent with the actual water level in the exploration well. The detection result at this time has high accuracy. The opening of the sampling hole depends on whether the liquid sensor is in contact with the water surface. When the liquid sensor detects contact with the water, the bottom end of the sampling ring cylinder is already below the water surface. At this time, the sampling hole is opened to allow water to enter the collection cavity, which can reduce the probability of floating objects on the water surface entering the collection cavity.

[0009] Preferably, the second air pressure hole and the sampling hole are coaxial, the control assembly comprises a controller and a control slide rod, the control slide rod and the sampling ring cylinder slide relative to each other, the sliding direction is parallel to the axis of the sampling hole, the control slide rod is fixedly connected with a sampling piston and an air pressure piston, the air pressure piston is used for blocking the second air pressure hole, the sampling piston is used for blocking the sampling hole, and the controller is used for driving the control slide rod to move.

[0010] The effect is that the movement of the control slide rod drives the sampling piston and the air pressure piston to move synchronously, and the sampling hole and the second air pressure hole can be synchronously opened and closed.

[0011] Preferably, a plurality of auxiliary measuring cylinders are fixedly connected to the outer wall of the sampling ring cylinder, the length direction of the auxiliary measuring cylinder is parallel to the axis of the sampling ring cylinder, one end of the auxiliary measuring cylinder close to the connecting plate is open, an auxiliary hole is arranged on the side wall of the sampling ring cylinder, the auxiliary hole is in communication with the bottom of the auxiliary measuring cylinder, an auxiliary plate is fixedly connected to the control slide rod, the auxiliary plate is in contact with the inner wall of the collecting cavity, and the auxiliary plate blocks the auxiliary hole when the sampling hole is blocked by the sampling piston.

[0012] The effect is that the water level in the auxiliary measuring cylinder can be kept consistent with the water level in the external space in the process that the water enters the collecting cavity, and the internal space of each auxiliary measuring cylinder is isolated after the sampling hole is closed. When the water level in the sampling ring cylinder on the ground is inconsistent with the water level in the auxiliary measuring cylinder, the water amount difference in each auxiliary measuring cylinder is compared, and the posture of the sampling ring cylinder in the well is reproduced by adjusting the posture of the sampling ring cylinder according to the water level in the sampling ring cylinder, so that the real liquid level data is calculated.

[0013] Preferably, the controller comprises a pneumatic hose and a power cylinder, the power cylinder is fixedly arranged on the side, away from the sampling ring cylinder, of the connecting plate, the power cylinder is in communication with the second air pressure hole, the air pressure piston is located in the power cylinder and in contact with the inner wall of the power cylinder when the second air pressure hole is in an open state, the pneumatic hose is in communication with the end of the power cylinder, away from the connecting plate, a gas flow hole is arranged on the cylinder wall of the power cylinder, and the air pressure piston can block the second air pressure hole and the gas flow hole at the same time.

[0014] The effect is that the air pressure piston in the power cylinder is controlled to move in the form of air pressure power, the whole control slide rod is driven to move, and finally the opening and closing control of the second air pressure hole and the sampling hole is realized.

[0015] Preferably, the unwinding mechanism comprises a rack, a winding drum, a driving gear and a driving motor, the rack is located on the ground, the winding drum is rotationally arranged on the rack, the suspension rope is wound on the winding drum, one end of the suspension rope is fixedly connected with the winding drum, the driving gear is coaxially fixedly connected with one end of the winding drum, the driving motor is connected with the rack, an output gear is connected with the output shaft of the driving motor, and the output gear is engaged with the driving gear.

[0016] Preferably, the unwinding mechanism further comprises an adjusting assembly, the pneumatic hose and the suspension rope are fixedly connected, the side wall of the pneumatic hose and the side wall of the suspension rope are in contact and the extension trajectories of the two are consistent, the diameter of the suspension rope is greater than the outer diameter of the pneumatic hose, a control cavity is arranged in the winding drum, one end of the pneumatic hose away from the power drum is communicated with the control cavity, and the adjusting assembly is used for changing the air pressure in the control cavity.

[0017] Preferably, the adjusting assembly comprises an adjusting piston, the adjusting piston is located in the control cavity and is in sliding connection with the winding drum, the sliding direction is the axial direction of the winding drum, and the communication position of the pneumatic hose and the control cavity is always located on one side of the adjusting piston.

[0018] Preferably, the adjusting assembly further comprises an adjusting motor and an adjusting screw, the adjusting screw is rotationally connected with the winding drum in a coaxial mode, the adjusting piston is threadedly connected with the adjusting screw in a coaxial mode, and the output shaft of the adjusting motor is connected with the adjusting screw in a coaxial mode.

[0019] The effect is that when the adjusting screw and the winding drum rotate at the same speed, the adjusting piston also rotates at the same speed, that is, the position of the adjusting piston relative to the winding drum does not change, and the air pressure in the control cavity does not change. When the adjusting screw and the winding drum have a relative speed, the adjusting piston can move relative to the winding drum under the action of the threaded transmission, so that the control cavity generates positive pressure or negative pressure, and the air pressure control function is achieved.

[0020] Preferably, the unwinding mechanism further comprises a fixed guide rail, the fixed guide rail is laid on the ground, the length direction of the fixed guide rail is parallel to the axis of the winding drum, a matching block is arranged on the rack, a motorized wheel is rotationally connected with the matching block, the motorized wheel is in rolling abutment with the fixed guide rail, a stopper is arranged on the matching block, and the stopper is used for relatively fixing the rack and the fixed guide rail.

[0021] The effect is that since the suspension rope extends along the axial direction of the winding drum when being wound on the winding drum, the winding drum has the ability to move axially when winding the suspension rope out or into the winding drum, so that the winding position of the suspension rope relative to the wellhead of the exploration well has high stability.

[0022] Preferably, the stopper comprises a stop screw and a stop rack block, the stop screw and the matching block are threadedly connected, the length direction of the stop screw is perpendicular to the length direction of the fixed guide rail, the stop rack block is rotationally connected to one end of the stop screw facing the fixed guide rail, the fixed guide rail is fixedly connected with a matching rack along the length direction of the fixed guide rail, and the stop rack block and the matching rack are selectively engaged.

[0023] The effect is that the stop screw can drive the stop rack block to ascend or descend when rotating, and when the stop rack block descends to engage the sawtooth of the stop rack block with the sawtooth of the matching rack, the matching block and the rack cannot move relative to the fixed guide rail any more, and the unwinding position of the suspension rope is also kept stable.

[0024] By adopting the above technical scheme, the present application has the following beneficial effects:

[0025] The liquid sensor is sensitive in time, the auxiliary measuring tube provides an auxiliary reference for correction of detection data, and the measured water level data has high accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the unwinding mechanism of the hydrogeological surveying device in the embodiment of the present application.

[0027] Figure 2 is a schematic diagram of the structure of the unwinding mechanism in the embodiment of the present application.

[0028] Figure 3 is a schematic diagram of the structure of the sampling mechanism when the sampling hole and the second air pressure hole are not plugged in the embodiment of the present application.

[0029] Figure 4 is a schematic diagram of the sampling mechanism when the second air pressure hole and the sampling hole are closed in the embodiment of the present application.

[0030] Figure 5 is a schematic diagram of the connection structure of the suspension rope and the pneumatic hose in the embodiment of the present application.

[0031] Figure 6 is a schematic diagram of the operation principle of the adjusting assembly in the embodiment of the present application.

[0032] Figure 7 is Figure 2 is a local enlarged view of part A in FIG.

[0033] REFERENCE NUMERALS:

[0034] 1, fixed guide rail; 11, matching rack; 2, unwinding mechanism; 21, rack; 211, matching block; 212, motorized wheel; 22, stopper; 221, stop screw; 222, stop rack block; 23, winding drum; 231, control cavity; 24, drive gear; 25, drive motor; 251, output gear; 26, support gear; 27, support roller; 3, adjustment assembly; 31, adjustment motor; 32, adjustment screw; 33, adjustment piston; 331, rubber layer; 4, suspension rope; 41, mounting flange; 42, fixed collar; 5, sampling mechanism; 51, connecting plate; 511, first air pressure hole; 512, second air pressure hole; 52, sampling ring cylinder; 521, detection space; 522, collection cavity; 523, sampling hole; 524, auxiliary hole; 53, auxiliary burette; 54, liquid sensor; 6, control assembly; 61, control slide; 611, auxiliary plate; 62, sampling piston; 63, air pressure piston; 64, controller; 641, pneumatic hose; 642, extension hose; 643, power cylinder; 6431, air flow hole. DETAILED DESCRIPTION

[0035] The following describes Figures 1 to 7 a hydrogeological survey device.

[0036] The embodiment discloses a hydrogeological survey device, as shown in Figure 1 , Figure 2 and Figure 3 , unwinding mechanism 2, suspension rope 4 and sampling mechanism 5, unwinding mechanism 2 is located on the ground at the wellhead of the survey well, which connects the sampling mechanism 5 through the suspension rope 4 and makes the sampling mechanism 5 enter the survey well to monitor the water level and collect water samples.

[0037] As shown in Figure 1 and Figure 2As shown, the unwinding mechanism 2 comprises a rack 21, a winding drum 23, a driving gear 24 and a driving motor 25. The rack 21 is located on the ground, the winding drum 23 is rotatably arranged on the rack 21, and the rotating axis is horizontal. The suspension rope 4 is wound on the winding drum 23, and one end of the suspension rope 4 is fixedly connected with the winding drum 23. When the winding drum 23 rotates, the other end of the suspension rope 4 can be wound on or off the winding drum 23. The driving gear 24 is coaxially fixedly connected with one end of the winding drum 23. The driving motor 25 is connected with the rack 21. An output gear 251 is coaxially fixedly connected with the output shaft of the driving motor 25. The output gear 251 is engaged with the driving gear 24. The engagement point of the output gear 251 and the driving gear 24 is located above the driving gear 24. Two supporting gears 26 are rotatably arranged on the rack 21 and below the driving gear 24. The two supporting gears 26 are simultaneously engaged with the driving gear 24, and also provide certain gravity support for the driving gear 24, so as to improve the balance of the driving gear 24 during rotation. Two supporting rollers 27 are rotatably connected with the rack 21 and below the winding drum 23. The wheel surfaces of the two supporting rollers 27 are simultaneously in rolling abutment with the side wall of the winding drum 23, and also provide gravity support for the winding drum 23.

[0038] As shown in Figure 3 The sampling mechanism 5 comprises a connecting plate 51 and a sampling ring cylinder 52. The sampling ring cylinder 52 is a hollow cylinder. A detection space 521 is formed on the inner side of the sampling ring cylinder 52. A collection cavity 522 is formed in the wall of the sampling ring cylinder 52. The connecting plate 51 is fixedly connected with one end of the sampling ring cylinder 52. The plate surface of the connecting plate 51 is perpendicular to the axis of the sampling ring cylinder 52. One end of the suspension rope 4 is fixedly connected with a mounting flange 41. The mounting flange 41 is coaxially connected with the side of the connecting plate 51 away from the sampling ring cylinder 52 by bolts. The suspension rope 4 is provided with a scale. The connecting plate 51 and the sampling ring cylinder 52 are put into the exploration well. The lowering depth of the sampling ring cylinder 52 is determined by the unwinding length of the suspension rope 4 relative to the rack 21 or the ground.

[0039] As shown in Figure 3 and Figure 4As shown, the liquid sensor 54 is fixedly connected to the connecting plate 51 and in the detection space 521, the sampling ring cylinder 52 is provided with a sampling hole 523 at the end away from the connecting plate 51, the connecting plate 51 is provided with a first air pressure hole 511 and a second air pressure hole 512 penetrating the thickness of the plate, the first air pressure hole 511 is in communication with the detection space 521, the second air pressure hole 512 and the sampling hole 523 are both in communication with the collection cavity 522, and the second air pressure hole 512 and the sampling hole 523 are coaxial, the collection cavity 522 is used to collect the water sample in the exploration well. When the bottom end of the sampling ring cylinder 52 contacts the water surface, the bottom of the detection space 521 is closed by the water, but due to the existence of the first air pressure hole 511, the air pressure inside the detection space 521 and the space outside the sampling ring cylinder 52 can be kept consistent, so that when the liquid sensor 54 contacts the water surface, the water level inside the detection space 521 is basically consistent with the actual water level in the exploration well, at this time the liquid sensor 54 sends a signal to the control station on the ground to drive the motor 25 to stop running, and at the same time the reading on the suspension rope 4 is read to obtain the water level depth data. The sampling mechanism 5 further comprises a control assembly 6 for controlling the sampling hole 523 and the second air pressure hole 512 to be opened or closed at the same time, before the liquid sensor 54 contacts the water surface, the sampling hole 523 and the second air pressure hole 512 should be in the closed state. The liquid sensor 54 is electrically connected to the control station on the ground through an additional long signal line, and the wiring port is located on the connecting plate 51 (not shown in the figure).

[0040] As Figure 3 and Figure 4As shown, the control assembly 6 comprises a controller 64 and a control slide rod 61, the control slide rod 61 and the sampling ring cylinder 52 slide relative to each other in a direction parallel to the axis of the sampling hole 523, the control slide rod 61 is fixedly connected with a sampling piston 62 and an air pressure piston 63, the air pressure piston 63 is used for blocking the second air pressure hole 512, the sampling piston 62 is used for blocking the sampling hole 523, the opening and closing states of the sampling hole 523 and the second air pressure hole 512 are synchronous, and the controller 64 is used for driving the control slide rod 61 to move. The controller 64 comprises a pneumatic hose 641 and a power cylinder 643, the power cylinder 643 is fixedly arranged on the side of the connecting plate 51 away from the sampling ring cylinder 52, the number of the power cylinder 643 is consistent with the number of the second air pressure hole 512 and they are one-to-one corresponding, and the power cylinder 643 and the second air pressure hole 512 are in communication. The pneumatic hose 641 is made of rubber, one end of the pneumatic hose 641 is fixedly connected to the mounting flange 41, the other end of the pneumatic hose 641 extends to the ground and is connected to a gas source, the connecting plate 51 is provided with an extension hose 642, one end of the extension hose 642 is fixedly connected to the power cylinder 643 away from the connecting plate 51, and the other end of the pneumatic hose 641 is also in communication when the mounting flange 41 and the connecting plate 51 are fixed, that is, the pneumatic hose 641 is in communication with the inner cavity of the power cylinder 643 through the extension hose 642. The cylinder wall of the power cylinder 643 is provided with an airflow hole 6431, when the second air pressure hole 512 is in an open state, the air pressure piston 63 is located in the power cylinder 643 and is in contact with the inner wall of the power cylinder 643, and at this time, the airflow hole 6431 can be in communication with the second air pressure hole 512, that is, the space of the collection cavity 522 is in communication with the outside environment through the second air pressure hole 512, the inner cavity of the power cylinder 643 and the airflow hole 6431 to maintain pressure balance. The pneumatic hose 641 applies positive pressure to the inner cavity of the power cylinder 643, which can make the air pressure piston 63 move towards the second air pressure hole 512, the air pressure piston 63 blocks the second air pressure hole 512 at the same time, and at this time, the sampling piston 62 also blocks the sampling hole 523, and the collection cavity 522 becomes a sealed space.

[0041] As shown in Figure 1 , Figure 2 and Figure 5 , the pneumatic hose 641 is fixedly connected with the suspension rope 4, the side wall of the pneumatic hose 641 is attached to the side wall of the suspension rope 4 and their extension trajectories are consistent, that is, the pneumatic hose 641 moves around the surface of the winding cylinder 23 with the suspension rope 4, in order to reduce the extrusion deformation influence of the winding pressure on the shape of the pneumatic hose 641, the diameter of the suspension rope 4 is greater than the outer diameter of the pneumatic hose 641; the suspension rope 4 and the pneumatic hose 641 are bonded by glue, and a plurality of fixing loops 42 are sleeved on the suspension rope 4 Figure 1 , Figure 2The fixing sleeve 42 also sheaths the pneumatic hose 641 to keep the stability of the parallel fixed relationship of the two. In the embodiment, the suspension rope 4 is a hemp rope with a diameter of 2.5 cm, the outer diameter of the pneumatic hose 641 is 1.5 cm, the interval between two adjacent fixing sleeves 42 is 25-30 cm, and the fixing sleeve 42 is made of an electrician tape. The end of the pneumatic hose 641 away from the mounting flange 41 penetrates the driving gear 24 and is fixedly connected to the end face of the winding drum 23. The winding drum 23 is provided with a control cavity 231, and the pneumatic hose 641 and the control cavity 231 are in communication. The surveying device further comprises an adjusting assembly 3, which is used to change the air pressure in the control cavity 231, so as to control the pneumatic hose 641 to supply or exhaust air in the power cylinder 643.

[0042] As shown in Figure 2 and Figure 6 , the adjusting assembly 3 comprises an adjusting piston 33, an adjusting motor 31 and an adjusting screw 32. The adjusting piston 33 is located in the control cavity 231 and is in sliding connection with the winding drum 23 in the axial direction of the winding drum 23. The adjusting screw 32 is rotationally arranged on the rack 21 and is coaxially rotationally connected with the winding drum 23, and a bearing is arranged between the two, i.e. the rotational movements of the winding drum 23 and the adjusting screw 32 do not interfere with each other. The adjusting motor 31 is fixedly installed on the rack 21, and the output shaft of the adjusting motor 31 is coaxially connected with the adjusting screw 32. The adjusting piston 33 is coaxially screwed with the adjusting screw 32. When the adjusting screw 32 and the winding drum 23 rotate at the same speed, the adjusting piston 33 also rotates at the same speed, i.e. the position of the adjusting piston 33 relative to the winding drum 23 does not change, and the air pressure in the control cavity 231 does not change. When the adjusting screw 32 and the winding drum 23 have a relative speed, the adjusting piston 33 can move relative to the winding drum 23 under the action of the threaded transmission, so as to generate positive pressure or negative pressure in the control cavity 231, achieving the air pressure control function. In order to improve the sealing between the adjusting piston 33 and the inner wall of the winding drum 23, a rubber layer 331 is fixedly attached to the edge of the adjusting piston 33.

[0043] As shown in Figure 2 and Figure 7As shown, the suspension rope 4 in the embodiment only winds one layer on the winding drum 23, the outer diameter of the winding drum 23 is 47 cm, the total length is 2 m, and the maximum winding length of the suspension rope 4 is about 73 m. In order to keep the winding point of the suspension rope 4 in the process of rope releasing and winding always above the wellhead of the exploration well, the winding drum 23 needs to move relative to the ground, so the surveying device further comprises a fixed guide rail 1, the fixed guide rail 1 is laid on the ground, the length direction of the fixed guide rail 1 is parallel to the axis of the winding drum 23, the fixed guide rail 1 is a channel steel, and the number of the fixed guide rail 1 is two. The rack 21 is provided with a matching block 211, the matching block 211 is rotatably connected with a motor wheel 212, the motor wheel 212 and the fixed guide rail 1 rollingly abut, and when the sampling mechanism 5 is continuously released or pulled up, an operator can manually push the rack 21, so that the winding drum 23 can move in the axial direction. The matching block 211 is provided with a stopper 22, the stopper 22 is used to relatively fix the rack 21 and the fixed guide rail 1 when needed. The fixed guide rail 1 is fixedly connected with a matching rack 11, the matching rack 11 is welded and fixed on the groove bottom of the channel steel, and the length directions of the fixed guide rail 1 and the matching rack 11 are consistent. The stopper 22 comprises a stopper screw 221 and a stopper rack block 222, the stopper screw 221 and the matching block 211 are vertically screw-connected, the stopper rack block 222 is rotatably connected to one end of the stopper screw 221 facing the fixed guide rail 1 and is vertically slidably connected with the matching block 211, that is, when the stopper screw 221 rotates, the stopper rack block 222 can be driven to rise or fall; when the stopper rack block 222 falls to the position where the sawtooth of the stopper rack block 222 and the sawtooth of the matching rack 11 are engaged, the matching block 211 and the rack 21 cannot move relative to the fixed guide rail 1 any more, and at this time, the winding position of the suspension rope 4 can also be kept stable.

[0044] As Figure 3As shown, the outer wall of the sampling ring cylinder 52 is fixedly connected with a plurality of auxiliary burettes 53, the length direction of the auxiliary burette 53 is parallel to the axis of the sampling ring cylinder 52, the upper end of the auxiliary burette 53 is open, the lower end is closed, the side wall of the sampling ring cylinder 52 is provided with an auxiliary hole 524, the auxiliary hole 524 is in communication with the bottom of the auxiliary burette 53 and the collection cavity 522, that is, the water in the collection cavity 522 can enter the auxiliary burette 53 through the auxiliary hole 524. One side of the control slide rod 61 is fixedly connected with an auxiliary plate 611, the auxiliary plate 611 is in contact with the inner wall of the collection cavity 522, when the sampling hole 523 is opened, the auxiliary hole 524 is also in an open state, when the sampling hole 523 is blocked by the sampling piston 62, the auxiliary plate 611 also closes the auxiliary hole 524. In the embodiment, the number of the auxiliary burette 53, the power cylinder 643 and the control slide rod 61 is four, and the four auxiliary burettes 53 are arranged in an array around the circumference of the sampling ring cylinder 52. During the process of water entering the collection cavity 522, the water level in the auxiliary burette 53 can be consistent with the water level of the external space. After the sampling hole 523 is closed, the internal space of each auxiliary burette 53 is isolated. If the axis of the sampling ring cylinder 52 cannot maintain a vertical state due to some internal reasons of the exploration well at this time, the water level in the sampling ring cylinder 52 extracted to the ground cannot show the true water level state, then the water quantity difference in each auxiliary burette 53 needs to be compared, and the attitude of the sampling ring cylinder 52 in the well is reproduced by adjusting the attitude of the sampling ring cylinder 52 according to the water level in the sampling ring cylinder 52, so as to calculate the true liquid level data.

[0045] The working process of the embodiment is as follows:

[0046] After the mounting flange 41 and the connecting plate 51 are installed by bolts, the pneumatic hose 641 and the extension hose 642 are also in communication, first, the control slide rod 61 is in a state of opening the sampling hole 523 and the second air pressure hole 512, and then the sampling ring cylinder 52 is lowered into the exploration well, and the frame 21 is continuously pushed to move at the same time. When the liquid sensor 54 sends a signal, the driving motor 25 stops running, the frame 21 is relatively fixed when passing through the stopper 22, and the reading on the suspension rope 4 is read. Subsequently, the adjusting motor 31 is started, the change of the air pressure in the winding drum 23 finally drives the control slide rod 61 to move to simultaneously close the sampling hole 523, the auxiliary hole 524 and the second air pressure hole 512, and then the output shaft of the driving motor 25 is reversed, and the sampling ring cylinder 52 is pulled up to the ground, and the water level data in the auxiliary burette 53 is combined to calculate the water level depth.

[0047] Although the embodiments of the present application have been shown and described above, it is to be understood that the above description of the embodiments and the accompanying drawings are exemplary and explanatory in nature and are intended to be within the scope of the present application, and the ordinary skill in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application; based on the embodiments of the present application, all other embodiments obtained by the ordinary skill in the art without creative labor are within the scope of protection of the present application.

Claims

1. A hydrogeological survey device, comprising a unwinding mechanism, a suspension rope and a sampling mechanism, the sampling mechanism comprising a connecting plate and a sampling cylinder, a detection space being formed inside the sampling cylinder, the connecting plate and the sampling cylinder being fixedly connected at one end, a liquid sensor being fixedly connected on the connecting plate and in the detection space, the unwinding mechanism being connected with the connecting plate through the suspension rope, a collection cavity being formed on the sampling cylinder, a scale being arranged on the suspension rope. characterized in that The suspension rope and the sampling cylinder are respectively connected on opposite sides of the connecting plate, the connecting plate is provided with a first air pressure hole and a second air pressure hole penetrating through the thickness of the plate, the first air pressure hole is communicated with the detection space, a sampling hole is formed on the end of the sampling cylinder away from the connecting plate, the second air pressure hole and the sampling hole are both communicated with the collection cavity, the sampling mechanism further comprises a control assembly for controlling the sampling hole and the second air pressure hole to be opened or closed at the same time. The second air pressure hole and the sampling hole are coaxial, the control assembly comprises a controller and a control slide rod, the control slide rod slides relative to the sampling cylinder, the sliding direction is parallel to the axis of the sampling hole, a sampling piston and an air pressure piston are fixedly connected on the control slide rod, the air pressure piston is used for blocking the second air pressure hole, the sampling piston is used for blocking the sampling hole, and the controller is used for driving the control slide rod to move. A plurality of auxiliary measuring cylinders are fixedly connected on the outer wall of the sampling cylinder, the length direction of the auxiliary measuring cylinder is parallel to the axis of the sampling cylinder, and the end of the auxiliary measuring cylinder close to the connecting plate is open, an auxiliary hole is formed on the side wall of the sampling cylinder, the auxiliary hole is communicated with the bottom of the auxiliary measuring cylinder, an auxiliary plate is fixedly connected on the control slide rod, the auxiliary plate is in contact with the inner wall of the collection cavity, and the auxiliary plate blocks the auxiliary hole when the sampling hole is blocked by the sampling piston.

2. The hydrogeological surveying apparatus according to claim 1, wherein The controller comprises a pneumatic hose and a power cylinder, the power cylinder is fixedly arranged on the side of the connecting plate away from the sampling cylinder, the power cylinder is communicated with the second air pressure hole, the air pressure piston is located in the power cylinder and in contact with the inner wall of the power cylinder when the second air pressure hole is in an open state, the pneumatic hose is communicated with the power cylinder away from the connecting plate, an airflow hole is formed on the cylinder wall of the power cylinder, and the air pressure piston can block the second air pressure hole and the airflow hole at the same time.

3. A hydrogeological surveying device according to claim 2, c h a r a c t e r i z e d in that The unwinding mechanism comprises a rack, a winding drum, a drive gear and a drive motor, the rack is located on the ground, the winding drum is rotatably arranged on the rack, the suspension rope is wound on the winding drum, one end of the suspension rope is fixedly connected with the winding drum, the drive gear is coaxially fixedly connected on one end of the winding drum, the drive motor is connected on the rack, an output gear is connected on the output shaft of the drive motor, and the output gear is engaged with the drive gear.

4. The hydrogeological surveying apparatus according to claim 3, wherein Further comprising an adjusting assembly, the pneumatic hose and the suspension rope are fixedly connected, the side wall of the pneumatic hose and the side wall of the suspension rope are in contact and have consistent extension tracks, the diameter of the suspension rope is greater than the outer diameter of the pneumatic hose, a control cavity is formed in the winding drum, one end of the pneumatic hose away from the power cylinder is communicated with the control cavity, and the adjusting assembly is used for changing the air pressure in the control cavity.

5. A hydrogeological survey apparatus according to claim 4, wherein The adjusting assembly comprises an adjusting piston, which is located in a control cavity and is in sliding connection with the winding drum in the axial direction of the winding drum, and the communication position between the pneumatic hose and the control cavity is always located at one side of the adjusting piston.

6. A hydrogeological survey apparatus according to claim 5, wherein The adjusting assembly further comprises an adjusting motor and an adjusting screw, the adjusting screw is in coaxial rotating connection with the winding drum, the adjusting piston is in coaxial threaded connection with the adjusting screw, and the output shaft of the adjusting motor is in coaxial connection with the adjusting screw.

7. The hydrogeological surveying apparatus according to claim 3, wherein Further comprising a fixed guide rail, which is laid on the ground, the length direction of the fixed guide rail is parallel to the axis of the winding drum, a matching block is arranged on the frame, a motorized wheel is in rotating connection with the matching block, the motorized wheel is in rolling abutment with the fixed guide rail, a stopper is arranged on the matching block, and the stopper is used for relatively fixing the frame and the fixed guide rail.

8. The hydrogeological surveying apparatus according to claim 7, wherein The stopper comprises a stop screw and a stop rack block, the stop screw is in threaded connection with the matching block, the length direction of the stop screw is perpendicular to the length direction of the fixed guide rail, the stop rack block is in rotating connection with one end of the stop screw which is towards the fixed guide rail, a matching rack is fixedly connected on the fixed guide rail along the length direction of the fixed guide rail, and the stop rack block and the matching rack are selectively engaged.

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