CN114705256A - Hydrogeology surveys water flow measuring device - Google Patents
Hydrogeology surveys water flow measuring device Download PDFInfo
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- CN114705256A CN114705256A CN202210631777.2A CN202210631777A CN114705256A CN 114705256 A CN114705256 A CN 114705256A CN 202210631777 A CN202210631777 A CN 202210631777A CN 114705256 A CN114705256 A CN 114705256A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
- G01F1/28—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by drag-force, e.g. vane type or impact flowmeter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention relates to the technical field of hydrogeological survey, in particular to a hydrogeological survey water flow measuring device, which comprises a measuring cylinder, wherein the inner wall of the measuring cylinder is rotatably provided with a rotating shaft, the outer wall of the rotating shaft is provided with blades which are distributed in an annular shape at equal intervals, the outer wall of the rotating shaft is provided with a signal gear, the outer wall of the measuring cylinder is provided with a hanging ring, the hanging ring is connected with a steel wire rope, the position of the inner wall of the measuring cylinder, which is close to one side of the signal gear, is provided with a rotating speed sensor, and one end of the rotating speed sensor is provided with a signal wire, and the hydrogeological survey water flow measuring device also comprises: the mounting mechanism is arranged on the outer wall of the measuring cylinder, and the mounting mechanism is connected with a counterweight mechanism through a traction rope; a forward flow mechanism. The invention can keep the direction of the opening of the measuring cylinder consistent with the water flow direction under the action of the downstream mechanism, effectively ensure the accuracy of detection, and can prevent the measuring cylinder from floating up and down by sinking the counterweight mechanism to the water bottom and keeping the steel wire rope and the traction rope tight.
Description
Technical Field
The invention relates to the technical field of hydrogeological surveying, in particular to a hydrogeological surveying water flow measuring device.
Background
Hydrogeological survey refers to hydrogeological research work performed to ascertain hydrogeological conditions in an area, and aims to understand the causes, distribution and laws of motion of groundwater and surface water. The method provides a basis for reasonably exploiting and utilizing water resources and correctly designing and constructing foundations and piling projects, and the flow velocity of a water body to be surveyed is often required to be measured in the hydrogeological surveying process.
At present, current water flow measuring device still has certain weak point, in the use, lack the limiting displacement to the device, make the device can take place to shift under the rivers effect, lead to measuring result inaccurate, and measuring device's measuring port also is difficult to guarantee and rivers direction keep unanimous, also can lead to detecting structure inaccurate, also there is direct water flow measuring device who is fixed in the bottom with the device, but the measurement has certain limitation, can only the discharge of fixed measurement certain position department, therefore, need to design a hydrogeology survey water flow measuring device and solve above-mentioned problem urgently.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a hydrogeological survey water flow measuring device.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a hydrogeological survey water flow measuring device, includes a measuring section of thick bamboo, the inner wall of a measuring section of thick bamboo rotates and is provided with the pivot, and the outer wall of pivot is provided with the equidistance and is the blade that the annular distributes, the outer wall of pivot is provided with signal gear, the outer wall of a measuring section of thick bamboo is provided with rings, and is connected with wire rope on the rings, the inner wall of a measuring section of thick bamboo is close to the position department on one side of the signal gear and is provided with speed sensor, and speed sensor's one end is provided with the signal line, the signal line is around connecing in wire rope's the outside, still includes:
the mounting mechanism is arranged on the outer wall of the measuring cylinder and is connected with a counterweight mechanism through a traction rope;
and the downstream mechanisms are arranged on two sides of the measuring cylinder and used for keeping the direction of the cylinder opening of the measuring cylinder consistent with the water flow direction.
As a still further scheme of the invention: the installation mechanism is including setting up in the screw thread section of thick bamboo of measuring a section of thick bamboo outer wall, and the screw thread is provided with the double-screw bolt in the screw thread section of thick bamboo, the tip of double-screw bolt is provided with the disc, and the outer wall of disc has cup jointed and has rotated the seat, disc and the gap department of rotating between the seat are provided with the ball, the one end of haulage rope with rotate and be connected between the seat.
As a still further scheme of the invention: the counter weight mechanism includes the balancing weight, the outer wall of balancing weight is provided with the mount, and rotates in the mount and be provided with the dwang, and the outer wall of dwang is provided with the roller, the other end of haulage rope cup joints in the outside of roller, the tip of dwang is provided with the rocker, and the outer wall of rocker runs through and is provided with the rocker, the outer wall of balancing weight seted up with rocker matched with spacing groove.
As a still further scheme of the invention: the signal line is electrically connected with a controller, and the controller is electrically connected with a display.
As a still further scheme of the invention: one end of the measuring cylinder is provided with a mesh enclosure, and the mesh enclosure is conical in shape.
As a still further scheme of the invention: the other end of the measuring cylinder is rotatably provided with a baffle, and the end part of the baffle is provided with a pull rope.
As a still further scheme of the invention: the downstream mechanism comprises mounting cylinders arranged on the outer walls of the two sides of the measuring cylinder, inserting rods are inserted into the mounting cylinders, fastening bolts are arranged on the outer walls of the mounting cylinders and used for fixing the inserting rods, and downstream plates distributed at equal intervals are arranged on the outer walls of the inserting rods.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a hydrogeological survey water flow measuring device, a measuring cylinder can be placed in a water body to be measured through a steel wire rope, when the steel wire rope is not kept vertical to the water surface any more in the process of continuously lowering the steel wire rope, the steel wire rope indicates that a counterweight mechanism is already sunk to the water bottom at the moment, silt and stones at the water bottom can both play a role of blocking the counterweight mechanism, the counterweight mechanism is difficult to generate transverse displacement under the self gravity of the counterweight mechanism, the steel wire rope can be stopped to be lowered and pulled reversely at the moment, so that the steel wire rope on the measuring cylinder and a traction rope between an installation mechanism and the counterweight mechanism are both kept tight, the measuring cylinder can only rotate under the action of water flow and cannot float up and down along with the water flow under the action of the counterweight mechanism, and the length of the steel wire rope sunk into the water is the water depth position of the measuring cylinder, and can also make the nozzle orientation of a measuring cylinder keep unanimous with the rivers direction through following current mechanism's effect, effectively ensure the accuracy that detects, after rivers get into a measuring cylinder, can drive the blade and rotate, and then make the epaxial signal gear rotate of commentaries on classics, can detect the rotational speed of signal gear through speed sensor, and then reach the purpose that detects discharge, it is very convenient to use.
Drawings
FIG. 1 is a schematic cross-sectional view of a hydrogeological survey water flow measuring device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a mounting mechanism of a hydrogeological survey water flow measuring device according to an embodiment of the present invention;
FIG. 3 is a schematic side view of a hydrogeological survey water flow measuring device according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a counterweight mechanism of a hydrogeological survey water flow measuring device according to an embodiment of the present invention;
fig. 5 is a schematic view of a bottom view of a measuring cylinder of a hydrogeological survey water flow measuring device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a measuring cylinder of a hydrogeological survey water flow measuring device according to an embodiment of the invention.
In the figure: 1-measuring cylinder, 2-mesh enclosure, 3-blade, 4-rotating shaft, 5-signal gear, 6-steel wire rope, 7-signal line, 8-flying ring, 9-rotation speed sensor, 10-pulling rope, 11-baffle, 12-installation mechanism, 13-pulling rope, 14-balancing weight, 15-fixing frame, 16-stud, 17-disc, 18-rotation seat, 19-ball, 20-installation cylinder, 21-fastening bolt, 22-inserted rod, 23-concurrent plate, 24-counterweight mechanism, 25-threaded cylinder, 26-rotating rod, 27-roller, 28-rocking plate, 29-rocker, 30-limiting groove and 31-concurrent mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1, fig. 3 and fig. 5, a hydrogeological survey water flow measuring device provided for an embodiment of the present invention includes a measuring cylinder 1, a rotating shaft 4 is rotatably disposed on an inner wall of the measuring cylinder 1, blades 3 distributed in an annular shape at equal intervals are disposed on an outer wall of the rotating shaft 4, a signal gear 5 is disposed on an outer wall of the rotating shaft 4, a suspension ring 8 is disposed on an outer wall of the measuring cylinder 1, a steel wire rope 6 is connected to the suspension ring 8, a rotation speed sensor 9 is disposed at a position of the inner wall of the measuring cylinder 1, which is close to one side of the signal gear 5, and specific selection of the rotation speed sensor 9 is not limited, in this embodiment, preferably, the rotation speed sensor 9 is a magnetoelectric sensor, a signal line 7 is disposed at one end of the rotation speed sensor 9, and the signal line 7 is connected to an outer side of the steel wire rope 6, and further includes:
the mounting mechanism 12 is arranged on the outer wall of the measuring cylinder 1, and the counterweight mechanism 24 is connected to the mounting mechanism 12 through a traction rope 13;
and the downstream mechanism 31 is arranged on two sides of the measuring cylinder 1, and is used for keeping the direction of the cylinder opening of the measuring cylinder 1 consistent with the water flow direction.
The measuring cylinder 1 can be placed in a water body to be measured through the steel wire rope 6, in the process of continuously lowering the steel wire rope 6, when the steel wire rope 6 is not vertical to the water surface any more, the counter weight mechanism 24 is shown to be sunk to the water bottom at the moment, silt and stones at the water bottom can play a role of blocking the counter weight mechanism 24, and the counter weight mechanism 24 is difficult to generate transverse displacement under the self gravity of the counter weight mechanism 24, at the moment, the steel wire rope 6 can be stopped to be lowered and the steel wire rope 6 can be pulled reversely, so that the steel wire rope 6 on the measuring cylinder 1 and the traction rope 13 between the installation mechanism 12 and the counter weight mechanism 24 are kept tight, the measuring cylinder 1 can only rotate under the action of water flow under the action of the counter weight mechanism 24 and cannot float up and down along with the water flow, the length of the steel wire rope 6 sunk into the water, namely the water depth position of the measuring cylinder 1 is realized, and the cylinder mouth orientation of the measuring cylinder 1 can be kept consistent with the water flow direction under the action of the downstream mechanism 31, effectively ensure the accuracy that detects, after rivers got into measuring section of thick bamboo 1, can drive blade 3 and rotate, and then make the signal gear 5 in the pivot 4 rotate, can detect the rotational speed of signal gear 5 through speed sensor 9, and then reach the purpose that detects discharge, it is very convenient to use.
As an embodiment of the present invention, please refer to fig. 2, the mounting mechanism 12 includes a threaded cylinder 25 disposed on an outer wall of the measuring cylinder 1, a stud 16 is disposed in the threaded cylinder 25 through a thread, a disc 17 is disposed at an end of the stud 16, a rotating seat 18 is sleeved on an outer wall of the disc 17, a ball 19 is disposed at a gap between the disc 17 and the rotating seat 18, one end of the pull rope 13 is connected to the rotating seat 18, the stud 16 can be rotatably mounted in the threaded cylinder 25 to serve as a counterweight mechanism 24, and the stud 16 can be rotatably taken out from the threaded cylinder 25, so that the counterweight mechanism 24 is separated from the measuring cylinder 1, which is convenient to store, and meanwhile, the rotating seat 18 at one end of the pull rope 13 can be rotated outside the disc 17, which can prevent the pull rope 13 from being twisted and knotted, and has a better use effect.
As an embodiment of the present invention, please refer to fig. 1, fig. 3 and fig. 4, the counterweight mechanism 24 includes a counterweight block 14, a fixing frame 15 is disposed on an outer wall of the counterweight block 14, a rotating rod 26 is rotatably disposed in the fixing frame 15, a roller 27 is disposed on an outer wall of the rotating rod 26, the other end of the pulling rope 13 is wound on an outer side of the roller 27, a rocking plate 28 is disposed at an end portion of the rotating rod 26, a rocker 29 is disposed on an outer wall of the rocking plate 28 in a penetrating manner, a limiting groove 30 matched with the rocker 29 is disposed on an outer wall of the counterweight block 14, before the device is placed in water for detection, the rocking plate 28 drives the rocking plate 28 to rotate by rocking the rocker 29 according to a water depth of a measurement position, so that the pulling rope 13 can be wound on the roller 27, a distance between the measurement cylinder 1 and the counterweight block 14 can be conveniently adjusted, so that the measurement cylinder 1 can be flexibly disposed at a position to be measured, in the actual detection process, constantly transfer the in-process at wire rope 6, when wire rope 6 no longer keeps perpendicular with the surface of water, show that balancing weight 14 has sunk to the bottom this moment, can pull up wire rope 6 this moment, make wire rope 6 and haulage rope 13 all keep tight, and make wire rope 6 and surface of water keep relative vertically state, balancing weight 14 this moment is located the bottom, haulage rope 13 between balancing weight 14 and the measuring cylinder 1 keeps tight again, thereby it unreels length and measures the submarine distance of a section of thick bamboo 1 promptly to show haulage rope 13, wire rope submerges the length in the aquatic and measures the depth of water promptly, excellent in use effect.
As an embodiment of the invention, the signal wire 7 is electrically connected with a controller, the controller is electrically connected with a display, and data measured by the rotating speed sensor 9 can be transmitted to the controller through the signal wire 7 and converted into water flow, and the water flow is displayed on the display, so that the use is very convenient.
As an embodiment of the present invention, please refer to fig. 1 and fig. 6, one end of the measuring cylinder 1 is provided with the mesh enclosure 2, and the mesh enclosure 2 is conical, when impurities act on the conical mesh enclosure 2, the impurities can flow away along the side surface of the mesh enclosure 2, thereby effectively preventing the impurities from entering the measuring cylinder 1 to affect the rotation of the blade 3, and the mesh enclosure 2 can calculate the influence value on the actual flow velocity under the condition of installing the mesh enclosure 2 with a laboratory before being set, so that in the actual measuring process, the measured value can be reversely pushed out of the actual flow velocity of the water body by combining the influence value.
As an embodiment of the present invention, please refer to fig. 1, a baffle 11 is rotatably disposed at the other end of the measuring cylinder 1, and a pull rope 10 is disposed at an end of the baffle 11, so that when a part of large impurities directly and positively acts on the mesh enclosure 2 to cause an abnormal detection data, the pull rope 10 can be pulled to rotate the baffle 11, so as to close one end of the measuring cylinder 1, and the impurities staying on the mesh enclosure 2 can be effectively impacted by a reverse impact force generated during closing, so that the use effect is better.
As an embodiment of the present invention, please refer to fig. 3 and 5, the downstream mechanism 31 includes a mounting cylinder 20 disposed on the outer wall of the two sides of the measuring cylinder 1, and an insertion rod 22 is inserted into the mounting cylinder 20, the outer wall of the mounting cylinder 20 is provided with a fastening bolt 21 for fixing the insertion rod 22, the outer wall of the insertion rod 22 is provided with downstream plates 23 distributed equidistantly, when water flow acts on the downstream plates 23, the purpose of correcting the position of the measuring cylinder 1 can be achieved, so that the measuring cylinder 1 can be aligned to the water flow direction, and after the fastening bolt 21 removes the restriction on the insertion rod 22, the insertion rod 22 can be directly taken down from the mounting cylinder 20, which is convenient to carry and has better use effect.
When the device is used, the measuring cylinder 1 can be placed in a water body to be measured through the steel wire rope 6, in the process of continuously lowering the steel wire rope 6, when the steel wire rope 6 is not vertical to the water surface any more, the counterweight mechanism 24 is sunk to the water bottom at the moment, the underwater silt and stones can both play a role in blocking the counterweight mechanism 24, the counterweight mechanism 24 is difficult to transversely displace under the self gravity of the counterweight mechanism 24, at the moment, the steel wire rope 6 can be stopped to be lowered and the steel wire rope 6 can be pulled reversely, so that the steel wire rope 6 on the measuring cylinder 1 and the traction rope 13 between the installation mechanism 12 and the counterweight mechanism 24 are both kept tight, the measuring cylinder 1 can only rotate under the action of water flow and cannot float up and down along with the water flow under the action of the counterweight mechanism 24, and the length of the steel wire rope 6 immersed in the water is the position of the measuring cylinder 1, and can also make the nozzle orientation of measuring section of thick bamboo 1 keep unanimous with the rivers direction through following current mechanism 31's effect, effectively ensure the accuracy that detects, after rivers get into measuring section of thick bamboo 1, can drive blade 3 and rotate, and then make the signal gear 5 on the pivot 4 rotate, can detect the rotational speed of signal gear 5 through speed sensor 9, and then reach the purpose that detects discharge, it is very convenient to use.
It should be noted that although the present specification describes embodiments, not every embodiment includes only a single technical solution, and such description of the specification is only for clarity, and those skilled in the art should take the specification as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides a hydrogeological survey water flow measuring device, includes a measuring section of thick bamboo, its characterized in that, the inner wall rotation of a measuring section of thick bamboo is provided with the pivot, and the outer wall of pivot is provided with the equidistance and is the blade that the annular distributes, the outer wall of pivot is provided with signal gear, the outer wall of a measuring section of thick bamboo is provided with rings, and is connected with wire rope on the rings, the inner wall of a measuring section of thick bamboo is close to the position department on one side of signal gear and is provided with speed sensor, and speed sensor's one end is provided with the signal line, the signal line is around connecing in wire rope's the outside, still includes:
the mounting mechanism is arranged on the outer wall of the measuring cylinder and is connected with a counterweight mechanism through a traction rope;
and the downstream mechanisms are arranged on two sides of the measuring cylinder and used for keeping the direction of the cylinder opening of the measuring cylinder consistent with the water flow direction.
2. The hydrogeological survey water flow measuring device of claim 1, wherein the mounting mechanism comprises a threaded cylinder arranged on the outer wall of the measuring cylinder, a stud is arranged on the thread in the threaded cylinder, a disc is arranged at the end of the stud, a rotating seat is sleeved on the outer wall of the disc, a ball is arranged in a gap between the disc and the rotating seat, and one end of the traction rope is connected with the rotating seat.
3. The hydrogeological survey water flow measuring device of claim 2, characterized in that the counterweight mechanism comprises a counterweight, the outer wall of the counterweight is provided with a fixing frame, a rotating rod is arranged in the fixing frame in a rotating manner, the outer wall of the rotating rod is provided with a roller, the other end of the traction rope is wound on the outer side of the roller, the end of the rotating rod is provided with a rocking plate, the outer wall of the rocking plate is provided with a rocker in a penetrating manner, and the outer wall of the counterweight is provided with a limiting groove matched with the rocker.
4. The hydrogeological survey water flow measurement device of claim 1, wherein the signal line is electrically connected to a controller, and the controller is electrically connected to a display.
5. The water flow measuring device for hydrogeological surveying as defined in claim 1, wherein the measuring cylinder is provided at one end thereof with a mesh cap having a conical shape.
6. The hydrogeological survey water flow measuring device of claim 5, wherein the other end of the measuring cylinder is rotatably provided with a baffle, and the end of the baffle is provided with a pull rope.
7. The hydrogeological survey water flow measuring device of claim 1, wherein the downstream mechanism comprises a mounting cylinder arranged on the outer wall of each side of the measuring cylinder, a plug rod is inserted into the mounting cylinder, the outer wall of the mounting cylinder is provided with fastening bolts for fixing the plug rod, and the outer wall of the plug rod is provided with downstream plates distributed at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210631777.2A CN114705256A (en) | 2022-06-07 | 2022-06-07 | Hydrogeology surveys water flow measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210631777.2A CN114705256A (en) | 2022-06-07 | 2022-06-07 | Hydrogeology surveys water flow measuring device |
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| CN114705256A true CN114705256A (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210631777.2A Pending CN114705256A (en) | 2022-06-07 | 2022-06-07 | Hydrogeology surveys water flow measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117485482A (en) * | 2023-12-29 | 2024-02-02 | 山东省煤田地质局第三勘探队 | Detection equipment for geological hydrologic safety engineering by utilizing ultrasonic waves |
| CN118640872A (en) * | 2024-08-14 | 2024-09-13 | 山东省煤田地质局第三勘探队 | Hydraulic circular hydrologic survey device |
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| CN213398618U (en) * | 2020-11-30 | 2021-06-08 | 蔡继民 | Water conservancy flow velocity measuring instrument |
| CN213627363U (en) * | 2020-08-03 | 2021-07-06 | 甘肃居立苹果苗木繁育有限公司 | Steel wire fixer of anti-theft net |
| CN214583224U (en) * | 2021-03-12 | 2021-11-02 | 兰州天瑞测绘工程有限公司 | Be used for depth of water detection device for water conservancy measurement |
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| GB630473A (en) * | 1947-11-26 | 1949-10-13 | Robert Pearson Black | Improvements in and relating to flow meters |
| CN201059976Y (en) * | 2007-06-19 | 2008-05-14 | 拜存有 | Channel manual bridge type flow measuring vehicle |
| CN206223809U (en) * | 2016-11-18 | 2017-06-06 | 武汉科技大学 | A kind of water for detecting flow rate and direction is to mark |
| CN208476259U (en) * | 2018-05-25 | 2019-02-05 | 北京理工大学深圳研究院 | A kind of underground hydrological and image information detection device based on inertial navigation |
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| CN211402415U (en) * | 2020-04-07 | 2020-09-01 | 绥化学院 | Water grass-proof device of hydrographic cableway current meter |
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| CN214583224U (en) * | 2021-03-12 | 2021-11-02 | 兰州天瑞测绘工程有限公司 | Be used for depth of water detection device for water conservancy measurement |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117485482A (en) * | 2023-12-29 | 2024-02-02 | 山东省煤田地质局第三勘探队 | Detection equipment for geological hydrologic safety engineering by utilizing ultrasonic waves |
| CN117485482B (en) * | 2023-12-29 | 2024-03-22 | 山东省煤田地质局第三勘探队 | Detection equipment for geological hydrologic safety engineering by utilizing ultrasonic waves |
| CN118640872A (en) * | 2024-08-14 | 2024-09-13 | 山东省煤田地质局第三勘探队 | Hydraulic circular hydrologic survey device |
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Application publication date: 20220705 |