Soft soil geological survey equipment and survey method

Abstract

The present invention belongs to the field of geological exploration technology, specifically a kind of soft soil geological exploration equipment and exploration method thereof, comprising: a shell, the shell comprises an upper shell and a lower shell, the upper shell is hollow inside, a plurality of water inlet and outlet holes are evenly opened on the upper shell, an upper retaining ring and a lower retaining ring are fixedly installed in the upper shell, and a plurality of sampling tubes are fixedly installed at the lower end of the lower shell; a counterweight block, the counterweight block is slidably installed in the upper shell, and the counterweight block is located between the upper retaining ring and the lower retaining ring; a motor, the motor is fixedly installed on the inner bottom surface of the upper shell, a motor protection cover is fixedly installed outside the motor, and the motor output shaft is located below the lower retaining ring; an impeller, the impeller is fixedly connected to the upper end of the motor output shaft, and the impeller is located below the lower retaining ring; the present invention has a simple structure and can avoid manual knocking on the sampling tube to cause the sampling tube to be twisted and deformed, thereby causing the sampling tube to be unable to be used normally, and also reduces the workload of manual operation.

Description

Technical Field

[0001] The invention belongs to the technical field of geological exploration, in particular to a soft soil geological exploration device and an exploration method thereof. Background Art

[0002] Geological exploration is a survey and research activity that uses various means and methods to investigate and detect geology, determine the appropriate bearing layer, determine the foundation type based on the bearing capacity of the bearing layer, and calculate the foundation parameters. In geological exploration activities, soft soil geological exploration is an important part of geological exploration.

[0003] In the research activities of soft soil geological exploration, sampling and exploration of river and stable lake sediments plays an indispensable role in river and lake pollution monitoring and water quality determination. When sampling and exploring river and stable lake sediments, surveyors often need to first sample the deep sediments in the river and stable lakes. However, the existing deep sediment sampling equipment often uses a tubular sampler to directly insert into the river and stable lake sediments, and then use a hammer to knock the tubular sampler to insert the sampler into the deep sediment to obtain the deep sediment. However, the existing tubular sampler is made of steel pipe with an inner diameter of less than 10 cm, and the tubular sampler is too long when sampling deep sediment. Therefore, when a hammer is used to strike the sampler, the sampler may be twisted or deformed, affecting the normal use and sampling of the sampler, and reducing the service life of the tubular sampler, thereby increasing the difficulty and cost of soft soil geological exploration. At the same time, using a hammer to strike the tubular sampler to insert the sampler into deep mud for sampling increases the demand for manpower, which increases the intensity of exploration work. Summary of the invention

[0004] In order to make up for the deficiencies of the prior art, solve the problem that the distortion and deformation of the sampler affect the normal use and sampling of the sampler, reduce the service life of the tube sampler, and further increase the difficulty and cost of soft soil geological exploration, and at the same time, the use of a hammer to hit the tube sampler so that the sampler is inserted into deep mud for sampling increases the demand for manpower, thereby increasing the intensity of exploration work, the present invention proposes a soft soil geological exploration equipment and exploration method.

[0005] The technical solution adopted by the present invention to solve the technical problem is: the present invention discloses a soft soil geological survey equipment, comprising:

[0006] The shell comprises an upper shell and a lower shell. The upper shell is hollow inside and is evenly provided with a plurality of water inlet and outlet holes. An upper retaining ring and a lower retaining ring are fixedly installed in the upper shell. The upper shell and the lower shell are sealed and connected by bolts. A plurality of sampling tubes are fixedly installed at the lower end of the lower shell.

[0007] A counterweight block, the counterweight block is slidably mounted in the upper housing, and the counterweight block is located between the upper retaining ring and the lower retaining ring;

[0008] A motor, wherein the motor is fixedly mounted on the inner bottom surface of the upper housing, a motor protection cover is fixedly mounted on the outside of the motor, the motor output shaft is located below the lower retaining ring, the motor output shaft passes through the outside of the motor protection cover, and the motor output shaft is rotatably sealed and connected to the motor protection cover;

[0009] An impeller, the impeller is fixedly connected to the upper end of the motor output shaft, the impeller is located below the lower retaining ring, and the impeller is used to absorb and discharge water;

[0010] Preferably, the diameter of the inlet and outlet holes located on the inner wall of the upper shell is much larger than the diameter of the inlet and outlet holes located on the outer wall of the upper shell;

[0011] Preferably, a waterproof protective cover is fixedly installed in the upper shell, the waterproof protective cover is located outside the motor protective cover, the waterproof protective cover and the motor protective cover do not contact each other, and a cavity is formed between the waterproof protective cover and the motor protective cover;

[0012] Preferably, a heat dissipation fin is fixedly installed between the motor protection cover and the waterproof protection cover;

[0013] Preferably, the waterproof protective cover is arranged in an arc shape, the waterproof protective cover is fixedly connected to the inner wall of the upper shell body at one end away from the output shaft, the place where the waterproof protective cover is fixedly connected to the inner wall of the upper shell body is located below the inlet and outlet holes, and the outlet of the inlet and outlet holes points obliquely upward;

[0014] Preferably, the sampling tube is formed by splicing two semicircular tubes, the upper end of the semicircular tube is provided with a thread, and the upper end of the semicircular tube is tightly connected to the lower shell body through the thread;

[0015] Preferably, an outer sleeve is slidably mounted on the outside of the sampling tube, a spherical film is fixedly mounted on the lower end of the outer sleeve, and the lower end of the sampling tube is blade-shaped;

[0016] Preferably, a rubber layer is provided between the outer sleeve and the sampling tube;

[0017] Preferably, a plurality of L-shaped through holes are evenly opened in the wall of the sampling tube, an L-shaped push rod is sealingly and slidably installed in the L-shaped through hole, the L-shaped push rod is made of a soft plastic rod, one end of the L-shaped push rod close to the sampling tube is tapered, the upper end of the sampling tube is connected to a water pipe through a thread, the other end of the water pipe is connected to the top of the waterproof protective cover, the L-shaped through hole and the water pipe are connected to each other, and a solenoid valve controlled by a controller is provided in the water pipe;

[0018] A soft soil geological survey method, the survey method is applicable to any one of the survey equipments described above; the survey method comprises the following steps:

[0019] S1. When geological survey of the bottom mud of a calm lake is required, the survey equipment is first inserted vertically downward into the surface mud below the calm lake;

[0020] S2. Start the motor through the external controller to drive the impeller to start working. The impeller rotates forward to absorb the external water flow into the upper shell, and drives the external water flow to move upward, pushing the counterweight block to move upward. After that, the motor is controlled to reverse, thereby driving the impeller to reverse and discharge the water flow in the upper shell, so that the counterweight block moves downward, impacting the survey equipment, so that the survey equipment is further inserted downward into the deep bottom mud, thereby completing the sampling of the deep bottom mud to complete the geological survey;

[0021] S3. After the sampling is completed, the exploration equipment is pulled upwards to be taken out from the deep sediment, and then the sampling tube tightly connected to the lower shell spiral is taken out from the lower shell, and then the deep sediment after sampling is collected and classified to complete the geological survey.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The soft soil geological survey equipment and the survey method described in the present invention are provided with a motor, an impeller, and a counterweight block, and the motor is started to rotate forwardly through an external controller to drive the impeller to rotate forwardly, thereby absorbing the water flow in the calm lake and driving the water flow upward to push the counterweight block upward. After that, the controller controls the motor to reverse and drive the impeller to reverse to discharge the water flow, thereby causing the counterweight block to move downward, thereby achieving the knocking of the sampler, prompting the sampler to move downward and insert into the deep mud for sampling, thereby avoiding the twisting and deformation of the sampling tube when the deep mud sampling is performed by human power through the hammer to knock the sampler, thereby affecting the sampling of the sampler, making the soft soil geological survey more difficult and costly, and also reducing the work intensity of the surveyors during the geological survey.

[0024] 2. The soft soil geological exploration equipment and exploration method described in the present invention, by providing an outer sleeve, a spherical film, and a sampler with a blade-shaped lower end, when the exploration equipment is exploring and sampling deep sediment in a calm lake, the outer sleeve first squeezes the surface sediment and moves downward, so that the exploration equipment contacts the deep sediment, and the outer sleeve begins to slide upward under the squeeze of the deep sediment, so that the lower end of the blade-shaped sampler pierces the film and contacts the deep sediment, thereby completing the sampling of the deep sediment, avoiding the sample in the sampling tube containing surface sediment during the sampling process, thereby interfering with the sample, making the sampling result unusable, and requiring re-exploration, thereby reducing the exploration efficiency, increasing the exploration workload, and increasing the exploration cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 yes Figure 1 A partial enlarged view of the middle part;

[0028] Figure 3 yes Figure 1 A partial enlarged view of point B in the middle;

[0029] Figure 4 yes Figure 1 A partial enlarged view of point C in the middle;

[0030] In the figure: upper shell 11, lower shell 12, upper retaining ring 111, lower retaining ring 112, water inlet and outlet holes 113, sampling tube 2, rubber layer 21, L-shaped through hole 22, L-shaped push rod 23, counterweight 3, motor 4, motor protection cover 41, waterproof protection cover 42, heat dissipation fins 43, impeller 5, outer sleeve, film 61, water pipe 7. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] like Figures 1 to 4 As shown, the soft soil geological survey equipment of the present invention comprises:

[0033] The housing comprises an upper housing 11 and a lower housing 12. The upper housing 11 is hollow inside, and a plurality of water inlet and outlet holes 113 are evenly provided on the upper housing 11. An upper retaining ring 111 and a lower retaining ring 112 are fixedly installed in the upper housing 11. The upper housing 11 and the lower housing 12 are sealed and connected by bolts, and a plurality of sampling tubes 2 are fixedly installed at the lower end of the lower housing 12;

[0034] A counterweight block 3, wherein the counterweight block 3 is slidably mounted in the upper housing 11, and the counterweight block 3 is located between the upper retaining ring 111 and the lower retaining ring 112;

[0035] The motor 4 is fixedly mounted on the inner bottom surface of the upper housing 11, a motor protection cover 41 is fixedly mounted outside the motor 4, an output shaft of the motor 4 is located below the lower retaining ring 112, the output shaft of the motor 4 passes through the motor protection cover 41, and the output shaft of the motor 4 is rotatably sealed and connected to the motor protection cover 41;

[0036] An impeller 5, wherein the impeller 5 is fixedly connected to the upper end of the output shaft of the motor 4, the impeller 5 is located below the lower retaining ring 112, and the impeller 5 is used to absorb and discharge water;

[0037] During operation, when it is necessary to conduct sampling geological survey of the deep bottom mud under a calm lake, the survey equipment is first lowered vertically at the sampling survey point and inserted into the surface bottom mud under the calm lake. Then, the motor 4 is started through the external controller to make the motor 4 start to rotate forward, thereby driving the impeller 5 at the upper end of the output shaft of the motor 4 to rotate forward synchronously, so that the impeller 5 absorbs the external water flow into the upper shell 11, and drives the external water flow to move upward in the upper shell 11, impacting the counterweight 3, thereby pushing the counterweight 3 to move upward. When the counterweight 3 moves upward to the upper retaining ring 111, the motor 4 is continued to be controlled by the external controller to start reverse rotation, thereby driving the impeller 5 to start reverse rotation, and the water flow inside the upper shell 11 is discharged from the upper shell 11, so that the counterweight 3 pushed by the water flow to move upward to the upper retaining ring 111 starts It moves downward until the counterweight hits the lower retaining ring 112. At this time, the survey equipment moves downward as a whole under the impact force generated by the downward movement of the counterweight 3, and is further inserted into the deep bottom mud under the calm lake, thereby avoiding the survey equipment being twisted and deformed when the survey personnel manually use a hammer to hit the survey equipment so that the survey equipment can be inserted into the deep bottom mud, resulting in the survey equipment being unable to complete the sampling of the deep bottom mud, thereby affecting the progress of the geological survey, and also reducing the work intensity of the survey personnel during the geological survey. In addition, since a plurality of sampling tubes 2 are fixedly installed on the lower shell 12 at the same time, a plurality of sampling tubes 2 can sample a plurality of samples at the same survey point during a survey process, thereby further improving the accuracy of the sampling survey samples in the geological survey and reducing the error of the sampling samples.

[0038] As an embodiment of the present invention, the diameter of the water inlet and outlet hole 113 located on the inner wall of the upper shell 11 is much larger than the diameter of the water inlet and outlet hole 113 located on the outer wall of the upper shell 11;

[0039] During operation, when the impeller 5 rotates forwardly under the drive of the motor 4, the impeller 5 sucks the external water flow into the upper shell 11, and when the impeller 5 rotates reversely under the drive of the motor 4, the impeller 5 discharges the water flow in the upper shell 11 to the outside, since the aperture of the inlet and outlet holes 113 located on the outer wall of the upper shell 11 is much larger than the aperture of the inlet and outlet holes 113 located on the inner wall of the upper shell 11, when the impeller 5 discharges the water flow in the upper shell 11, due to the narrow tube effect, the water flow in the upper shell 11 is discharged faster at this time, thereby accelerating the acceleration of the counterweight block 3 to descend, thereby increasing the kinetic energy of the counterweight block 3 to impact downward, and then simultaneously increasing the potential energy of the exploration equipment to be inserted downward, thereby making it easier for the exploration equipment to be inserted downward into the deep bottom mud, thereby improving the sampling and exploration efficiency of the exploration equipment for the deep bottom mud.

[0040] As an embodiment of the present invention, a waterproof protective cover 42 is fixedly installed in the upper shell 11, and the waterproof protective cover 42 is located outside the motor protective cover 41. The waterproof protective cover 42 and the motor protective cover 41 do not contact each other, and a cavity is formed between the waterproof protective cover 42 and the motor protective cover 41.

[0041] During operation, when the impeller 5 rotates forward under the drive of the motor 4, the impeller 5 sucks the external water flow into the upper shell 11, and when the impeller 5 rotates reversely under the drive of the motor 4, the impeller 5 discharges the water flow in the upper shell 11 to the outside, there is a continuous water flow in the upper shell 11. Since a waterproof protective cover 42 is provided on the outside of the motor protective cover 41, the water flow in the upper shell 11 will be further blocked by the waterproof protective cover 42, thereby further preventing the water flow in the upper shell 11 from seeping into the motor protective cover 41, causing the motor 4 to malfunction when encountering water, resulting in the survey equipment being unable to work normally or causing an accident.

[0042] As an embodiment of the present invention, a heat dissipation fin 43 is fixedly installed between the motor protection cover 41 and the waterproof protection cover 42;

[0043] During operation, since the motor 4 continues to work during the downward insertion of the survey equipment, the motor 4 continuously generates heat during the continuous operation. Since a heat dissipation fin 43 is installed between the motor protection cover 41 and the waterproof protection cover 42, the heat generated during the continuous operation of the motor 4 is transferred to the waterproof protection cover 42 through the heat dissipation fin 43, and the heat is conducted through the water flow in the upper shell 11, thereby ensuring that the motor 4 always works at a suitable working temperature, avoiding damage to the motor 4 due to excessive temperature in a short time, which in turn causes the survey equipment to be unable to be inserted downward into the deep bottom mud for sampling and surveying. At the same time, since the heat dissipation fin 43 transfers the heat on the motor 4 to the waterproof protection cover 42, the heat dissipation fin 43 itself has a relatively high heat, thereby evaporating the water flow that penetrates into the cavity between the waterproof protection cover 42 and the motor protection cover 41, thereby further avoiding the water flow in the upper shell 11 from penetrating into the motor 4, causing damage to the motor 4, thereby affecting the normal use of the survey equipment, resulting in the survey equipment being unable to perform sampling and surveying work normally.

[0044] As an embodiment of the present invention, the waterproof protective cover 42 is arranged in an arc shape, and the waterproof protective cover 42 is fixedly connected to the inner wall of the upper shell 11 at one end away from the output shaft, and the place where the waterproof protective cover 42 is fixedly connected to the inner wall of the upper shell 11 is located below the inlet and outlet holes 113, and the outlet of the inlet and outlet holes 113 points obliquely upward;

[0045] During operation, since the end of the waterproof protective cover 42 away from the output shaft of the motor 4 is fixedly connected to the inner wall of the upper shell 11, and the waterproof protective cover 42 is arranged in an arc shape, when the impeller 5 sucks the external water flow into the upper shell 11, the external water flow flows upward under the guidance of the waterproof protective cover 42 and the attraction generated by the positive rotation of the impeller 5, thereby pushing the counterweight 3 to move upward. When the impeller 5 discharges the water flow outward, the water flow impact in the upper shell 11 can quickly reach the inlet and outlet holes 113, and then be discharged from the inlet and outlet holes 113, thereby flushing out the surface sediment sucked into the upper shell 11 during the suction process of the impeller 5, thereby avoiding the accumulation of surface sediment under the lake in the upper shell 11, causing the internal volume of the upper shell 11 to decrease, thereby causing the impeller 5 to be unable to suck in sufficient water flow into and out of the upper shell 11 to impact the counterweight 3, resulting in the counterweight 3 The upward impact stroke becomes shorter, and then the downward impact stroke of the counterweight 3 is also reduced synchronously, resulting in the counterweight 3. The kinetic energy generated downward is reduced, which reduces the distance the survey equipment is inserted downward, and it may even be unable to be inserted into the deep bottom mud. At the same time, since the outlet of the water inlet and outlet hole 113 points obliquely upward, the reaction force generated when the water in the upper shell 11 is discharged outward can also press the survey equipment downward into the deep bottom mud to a certain extent, making it easier to insert the survey equipment into the deep bottom mud.

[0046] As an embodiment of the present invention, the sampling tube 2 is formed by splicing two semicircular tubes, the upper end of the semicircular tube is provided with a thread, and the upper end of the semicircular tube is tightly connected to the lower shell 12 through the thread;

[0047] During operation, when the survey equipment moves downward under the impact of the downward potential energy of the counterweight 3 and is inserted into the deep bottom mud, at this time, since the sampling tube 2 is composed of two semicircular tubes, when the survey equipment completes the sampling survey and the survey equipment is pulled out upward, the threaded connection between the sampling tube 2 and the lower shell 12 can be directly unscrewed, and the sampling tube 2 can be directly opened to complete the collection of the survey sampling samples, thereby improving the collection rate of the survey sampling samples.

[0048] As an embodiment of the present invention, an outer sleeve 6 is fixedly installed outside the sampling tube 2, a spherical film 61 is fixedly installed at the lower end of the outer sleeve 6, and the lower end of the sampling tube 2 is in the shape of a blade;

[0049] During operation, when the exploration equipment is inserted downward into the bottom mud of a calm lake, since the sampling tube 2 is fixedly installed with an outer sleeve 6, and the lower end of the outer sleeve 6 is fixedly installed with a spherical film 61, when the sampling tube 2 moves downward synchronously with the exploration equipment under the impact of the downward potential energy of the counterweight 3, the spherical film 61 at the lower end of the outer sleeve 6 first contacts the surface mud and continues to move downward. When the exploration equipment contacts the deep mud, since the hardness of the deep mud is relatively harder than that of the surface mud, the outer sleeve 6 is blocked by the deep mud during the downward insertion process and cannot continue to move downward. At the same time, the exploration equipment continues to move downward under the operation of the counterweight 3, driving the sampling tube 2 to move downward continuously, so that the outer sleeve 6 and The sampling tubes 2 move relative to each other, so that the lower end of the sampling tube 2 contacts the film 61 at the lower end of the outer sleeve 6. At this time, since the lower end of the sampling tube 2 is in the shape of a blade, the lower end of the sampling tube 2 will directly pierce the film 61 at the lower end of the outer sleeve 6 and contact the deep bottom mud. After that, the sampling tube 2 continues to sample downward under the action of the downward impact potential energy of the counterweight block 3, and completes the sampling of the deep bottom mud, thereby avoiding the sampling tube 2 directly contacting the surface bottom mud during the movement toward the deep bottom mud, thereby sampling the surface bottom mud, resulting in different bottom mud compositions in the sampling tube 2, which in turn affects the geological survey sampling results and cannot accurately express the geological conditions at the survey point, requiring re-survey, resulting in slow survey efficiency and high survey costs.

[0050] As an embodiment of the present invention, a rubber layer 21 is provided between the outer sleeve 6 and the sampling tube 2;

[0051] During operation, when the outer sleeve 6 moves downward in the surface mud, since a rubber layer 21 is provided between the outer sleeve 6 and the sampling tube 2, when the outer sleeve 6 moves downward in the surface mud, the friction between the sampling tube 2 and the outer sleeve 6 increases, so that when the outer sleeve 6 stops in the process of squeezing the surface mud downward due to the obstruction of the surface mud, the kinetic energy generated by the sampling tube 2 under the impact of the counterweight block 3 cannot overcome the friction between the outer sleeve 6 and the sampling tube 2, resulting in no relative sliding between the sampling tube 2 and the outer sleeve 6, so that the outer sleeve 6 continues to move downward under the kinetic energy generated by the downward impact of the counterweight block 3, thereby avoiding the blade of the sampling tube 2 from piercing the film 61 prematurely and sampling the surface mud, resulting in impurities in the sampled sample of the sampling tube 2, resulting in the sampled sample of the sampling tube 2 being unusable and requiring re-sampling, which increases the workload of the survey work and reduces the work efficiency of the survey work.

[0052] As an embodiment of the present invention, a plurality of L-shaped through holes 22 are evenly opened in the wall of the sampling tube 2, an L-shaped push rod 23 is sealed and slidably installed in the L-shaped through hole 22, the L-shaped push rod is made of a soft plastic rod, and one end of the L-shaped push rod 23 close to the sampling tube 2 is tapered, the upper end of the sampling tube 2 is connected to a water pipe 7 through a thread, the other end of the water pipe 7 is connected to the top of the waterproof protective cover 42, the L-shaped through hole 22 and the water pipe 7 are connected to each other, and a solenoid valve controlled by a controller is provided in the water pipe 7;

[0053] During operation, after the sampling tube 2 completes the sampling of the deep sediment, the solenoid valve inside the water pipe 7 is opened through the controller, so that the water flow in the upper shell 11 flows into the L-shaped through hole 22 along the waterproof protective cover 42 and the water pipe 7 during the discharge process, causing the L-shaped push rod 23 inside the L-shaped through hole 22 to be squeezed, so that the end of the L-shaped push rod 23 close to the inner wall of the sampling tube 2 extends out, and the deep sediment sample taken in the sampling tube 2 is cut off, thereby ensuring that the amount of deep sediment samples taken in the sampling tube 2 is consistent, making the geological exploration sampling results more accurate.

[0054] A soft soil geological survey method, the survey method is applicable to any one of the survey equipments described above; the survey method comprises the following steps:

[0055] S1. When geological survey of the bottom mud of a calm lake is required, the survey equipment is first inserted vertically downward into the surface mud below the calm lake;

[0056] S2, start the motor 4 through the external controller, drive the impeller 5 to start working, the impeller 5 rotates forward to absorb the external water flow into the upper shell 11, and drive the external water flow to move upward, pushing the counterweight 3 to move upward, then control the motor 4 to reverse, thereby driving the impeller 5 to start reversing, discharge the water flow in the upper shell 11, so that the counterweight 3 moves downward, impacts the survey equipment, and makes the survey equipment further inserted downward into the deep bottom mud, thereby completing the sampling of the deep bottom mud to complete the geological survey;

[0057] S3. When sampling is completed, the exploration equipment is pulled upwards to be taken out from the deep sediment, and then the sampling tube 2 tightly connected to the lower shell 12 by a spiral is taken out from the lower shell 12, and then the deep sediment after sampling is collected and classified to complete the geological survey.

[0058] The specific workflow is as follows:

[0059] During operation, when it is necessary to conduct sampling geological surveys on the deep sediments in the river channel and the deep sediments under the calm lake, the survey equipment is first lowered vertically at the sampling survey point and inserted into the surface sediments under the calm lake. Then, the motor 4 is started through the external controller to make the motor 4 start to rotate forward, thereby driving the impeller 5 at the upper end of the output shaft of the motor 4 to rotate forward synchronously, so that the impeller 5 absorbs the external water flow into the upper shell 11, and drives the external water flow to move upward in the upper shell 11, thereby pushing the counterweight block 3 to move upward, and then the motor 4 is controlled to start to rotate in the reverse direction through the external controller, thereby driving the impeller 5 to start to rotate in the reverse direction. , the water flow inside the upper shell 11 is discharged into the upper shell 11, so that the counterweight block 3 that is pushed upward by the water flow starts to move downward. At this time, the exploration equipment moves downward as a whole under the impact force generated by the downward movement of the counterweight block 3, and is further inserted into the deep bottom mud under the calm lake. When the impeller 5 is driven by the motor 4 to rotate forward or reverse, the impeller 5 sucks the external water flow into the upper shell 11, or discharges the water flow in the upper shell 11. Since the aperture of the inlet and outlet holes 113 on the outer wall of the upper shell 11 is much larger than the aperture of the inlet and outlet holes 113 on the inner wall of the upper shell 11, when the impeller 5 moves the upper shell 11 When the internal water flow is discharged, due to the narrow tube effect, the water flow in the upper shell 11 is discharged faster, thereby increasing the kinetic potential energy of the counterweight block 3 descending. When the impeller 5 is driven by the motor 4 to rotate forward and reverse, the impeller 5 continuously draws the external water flow from the outside into the upper shell 11 and discharges the water flow in the upper shell 11. At this time, there is continuous water flow in the upper shell 11. Since a waterproof protective cover 42 is provided on the outside of the motor protective cover 41, the water flow in the upper shell 11 will be further blocked by the waterproof protective cover 42. The motor 4 continues to work during the downward insertion of the survey equipment, so the motor 4 continuously generates heat during the continuous operation. Since a heat sink 43 is installed between the motor protection cover 41 and the waterproof protection cover 42, the heat generated during the continuous operation of the motor 4 is transferred to the waterproof protection cover 42 through the heat sink 43, and the heat is conducted through the water flow in the upper shell 11. At the same time, since the heat sink 43 transfers the heat from the motor 4 to the waterproof protection cover 42, the heat sink 43 itself has a high heat, thereby evaporating the water flow that penetrates into the space between the waterproof protection cover 42 and the motor protection cover 41. Since the end of the waterproof protection cover away from the output shaft of the motor 4 is fixedly connected to the inner wall of the upper shell 11, and the waterproof protection cover 42 is connected to the upper shell 11 The inner wall is fixedly connected below the water inlet and outlet hole 113, and the waterproof protective cover 42 is arranged in an arc shape. Therefore, when the impeller 5 sucks the external water flow into the upper shell 11, the external water flow flows upward under the guidance of the waterproof protective cover 42 and the attraction generated by the forward rotation of the impeller 5, thereby pushing the counterweight 3 to move upward. When the impeller 5 discharges the water flow outward, the external water flow also flows out through the water inlet and outlet hole 113 under the guidance of the waterproof protective cover 42.When the survey equipment moves downward under the impact of the potential energy of the counterweight 3 and is inserted into the deep bottom mud, at this time, since the sampling tube 2 is composed of two semicircular tubes, when the survey equipment completes the sampling survey and the survey equipment is pulled out upward, the threaded connection between the sampling tube 2 and the lower shell 12 can be directly unscrewed, and the sampling tube 2 can be directly opened to complete the collection of the survey sampling samples. When the survey equipment is inserted downward into the bottom mud of a calm lake, since the sampling tube 2 is fixedly installed with an outer sleeve 6, and the lower end of the outer sleeve 6 is fixed A spherical film 61 is installed, so when the sampling tube 2 moves downward synchronously with the exploration equipment under the impact of the downward potential energy of the counterweight block 3, the spherical film 61 at the lower end of the outer sleeve 6 first contacts the surface mud and continues to move downward. When the exploration equipment contacts the deep mud, the deep mud is relatively harder than the surface mud, so the outer sleeve 6 is squeezed and stops moving downward, and starts to slide upward in the opposite direction. At this time, the sampling tube 2 moves downward relatively and contacts the film 61 at the lower end of the outer sleeve 6. The lower end of the sampling tube 2 is in the shape of a blade, so the lower end of the sampling tube 2 directly pierces the film 61 at the lower end of the outer sleeve 6 and contacts the deep bottom mud. After that, the sampling tube 2 continues to sample downward under the action of the downward impact potential energy of the counterweight block 3, and completes the sampling of the deep bottom mud. When the outer sleeve 6 moves downward in the surface bottom mud, since a rubber layer 21 is provided between the outer sleeve 6 and the sampling tube 2, when the outer sleeve 6 moves downward in the surface bottom mud, the friction between the sampling tube 2 and the outer sleeve 6 increases, thereby ensuring the outer sleeve 6 The tube 6 will not slide upwards in the process of squeezing the surface sediment downwards. When the sampling tube 2 completes the sampling of the deep sediment, the solenoid valve inside the water pipe 7 is opened through the controller, so that the water flow in the upper shell 11 flows into the L-shaped through hole 22 along the waterproof protective cover 42 and the water pipe 7 during the discharge process, squeezing the L-shaped push rod 23 inside the L-shaped through hole 22, so that the end of the L-shaped push rod 23 close to the inner wall of the sampling tube 2 extends, and the deep sediment sample taken in the sampling tube 2 is cut off.

[0060] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A soft soil geological survey equipment, It is characterized in that include: A shell, the shell comprising an upper shell (11) and a lower shell (12); the upper shell (11) is hollow inside, a plurality of water inlet and outlet holes (113) are evenly arranged on the upper shell (11), an upper retaining ring (111) and a lower retaining ring (112) are fixedly installed inside the upper shell (11), the upper shell (11) and the lower shell (12) are sealed and connected by bolts, and a plurality of sampling tubes (2) are fixedly installed at the lower end of the lower shell (12); A counterweight block (3), the counterweight block (3) being slidably mounted in the upper housing (11), the counterweight block (3) being located between the upper retaining ring (111) and the lower retaining ring (112); A motor (4), the motor (4) being fixedly mounted on the inner bottom surface of the upper housing (11), a motor protection cover (41) being fixedly mounted outside the motor (4), an output shaft of the motor (4) being located below the lower retaining ring (112), the output shaft of the motor (4) passing through the outside of the motor protection cover (41), and the output shaft of the motor (4) being rotationally sealedly connected to the motor protection cover (41); An impeller (5), the impeller (5) being fixedly connected to the upper end of the output shaft of the motor (4), the impeller (5) being located below the lower retaining ring (112), and the impeller (5) being used to absorb and discharge water; A waterproof protective cover (42) is fixedly installed in the upper shell (11); the waterproof protective cover (42) is located outside the motor protective cover (41); the waterproof protective cover (42) and the motor protective cover (41) are not in contact with each other; a cavity is formed between the waterproof protective cover (42) and the motor protective cover (41).

2. A soft soil geological survey equipment according to claim 1, Features: The diameter of the water inlet and outlet holes (113) located on the inner wall of the upper shell (11) is much larger than the diameter of the water inlet and outlet holes (113) located on the outer wall of the upper shell (11).

3. A soft soil geological survey equipment according to claim 1, Features: A heat dissipation fin (43) is fixedly mounted between the motor protection cover (41) and the waterproof protection cover (42).

4. The soft soil geological survey equipment according to claim 1, Features: The waterproof protective cover (42) is arranged in an arc shape. The waterproof protective cover (42) is fixedly connected to the inner wall of the upper shell (11) at one end away from the output shaft. The place where the waterproof protective cover (42) is fixedly connected to the inner wall of the upper shell (11) is located below the water inlet and outlet hole (113). The outlet of the water inlet and outlet hole (113) points obliquely upward.

5. The soft soil geological survey equipment according to claim 1, Features: The sampling tube (2) is formed by splicing two semicircular tubes, the upper end of the semicircular tube is provided with a thread, and the upper end of the semicircular tube is tightly connected to the lower shell (12) via the thread.

6. The soft soil geological survey equipment according to claim 1, Features: An outer sleeve (6) is slidably mounted on the outside of the sampling tube (2), a spherical film (61) is fixedly mounted on the lower end of the outer sleeve (6), and the lower end of the sampling tube (2) is in the shape of a blade.

7. A soft soil geological survey equipment according to claim 6, Features: A rubber layer (21) is provided between the outer sleeve (6) and the sampling tube (2).

8. The soft soil geological survey equipment according to claim 1, Features: A plurality of L-shaped through holes (22) are evenly arranged in the wall of the sampling tube (2), an L-shaped push rod (23) is sealed and slidably installed in the L-shaped through hole (22), the L-shaped push rod is made of a soft plastic rod, one end of the L-shaped push rod (23) close to the inside of the sampling tube (2) is tapered, the upper end of the sampling tube (2) is connected to a water pipe (7) through a thread, the other end of the water pipe (7) is connected to the top of the waterproof protective cover (42), the L-shaped through hole (22) and the water pipe (7) are connected to each other, and a solenoid valve controlled by a controller is arranged in the water pipe (7).

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