CN108756850B - Device and method for underwater positioning - Google Patents
Device and method for underwater positioning Download PDFInfo
- Publication number
- CN108756850B CN108756850B CN201810500347.0A CN201810500347A CN108756850B CN 108756850 B CN108756850 B CN 108756850B CN 201810500347 A CN201810500347 A CN 201810500347A CN 108756850 B CN108756850 B CN 108756850B
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- guide sleeve
- connecting rope
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- positioning
- centering
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- 238000000034 method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 89
- 239000000725 suspension Substances 0.000 claims abstract description 47
- 239000012530 fluid Substances 0.000 claims abstract description 39
- 238000005553 drilling Methods 0.000 description 18
- 230000004308 accommodation Effects 0.000 description 4
- 238000007665 sagging Methods 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/001—Survey of boreholes or wells for underwater installation
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Underground Or Underwater Handling Of Building Materials (AREA)
Abstract
The invention discloses a device and a positioning method for underwater positioning, wherein the positioning device comprises a water platform, a guide sleeve, a fluid containing part, a suspension piece, a connecting rope, a centering part and a position measuring mechanism, wherein the guide sleeve is movably arranged on the water platform, the top end of the fluid containing part is provided with an opening, the opening surrounds the guide sleeve, the suspension piece is suspended on fluid in the fluid containing part, one end of the connecting rope is connected to the position of the suspension piece above the opening, the other end of the connecting rope is connected with the centering part, the centering part is used for enabling the other end of the connecting rope to tend to or be positioned in the center of the guide sleeve, the centering part is positioned in the guide sleeve, and the position measuring mechanism is used for measuring the position of one end of the connecting rope connected with the suspension piece. The positioning device disclosed by the invention is simple in structure and high in positioning precision, can be used for rapidly measuring the deviation value and the deviation direction of the guide sleeve, and solves the problems of high difficulty and inaccuracy in deep water positioning in the prior art.
Description
Technical Field
The invention relates to the technical field of hydraulic engineering, in particular to a device and a method for underwater positioning, and especially relates to the technical field of positioning for deep water drilling.
Background
With the increasingly strict requirements of the country on ecological environment protection, a plurality of built hydropower stations, especially partial high-dam power stations, have extremely deep water in the reservoir (more than 60 m), the water temperature of the bottom reservoir is always at a low value, and the water environment of a downstream river reach is influenced after the low-temperature water leaks, so that the negative influence is caused on the propagation of aquatic organisms. Thus, engineering measures are required to raise the drain temperature. One such treatment measure is to provide a suspended water-proof curtain in the reservoir, for example, the patent with publication number CN104389297B discloses a device and method for increasing the layered low-temperature water in a large reservoir, and the low-temperature water in the lower part of the reservoir is blocked, so that the surface layer height Wen Kushui is discharged through a dam or a power generation water intake. The engineering measure needs to form a watertight curtain wall in the reservoir, and the curtain wall maintains a stable state in water, so that the bottom deepwater ground anchor and the surface buoyancy system are required to bear the water thrust force borne by the curtain. The deep water ground anchor construction needs to arrange anchor rods at the bottom of a reservoir or at a reservoir bank bedrock position, and the anchor rod positions need to be accurately constructed according to the design arrangement anchor hole positions, so that the problem of accurate positioning of deep water drilling is solved. In addition, the engineering such as reinforcing grouting of the toe board of the partially built face rockfill dam also has the problem of underwater positioning of grouting holes.
The existing deep water drilling positioning generally adopts a water surface lofting mode, drill hole coordinates are led into the water bottom through a lifting rope, or a diver is adopted to submerge the underwater lofting mode, or a inclinometer is adopted to measure the deflection degree of a guide sleeve, and the underwater hole position is reversely calculated. The above various positioning methods have the following problems:
1) A hanging rope mode: the lifting rope cannot keep the plumb state under the influence of water flow in the water in the reservoir, and the positioning deviation of drilling holes is large.
2) Setting out the submarine of the diver: after the reservoir water exceeds a certain depth (generally 60 m), the diver cannot dive or has great difficulty in diving, and the effective working time is short.
3) The inclinometer measures the inclination angle mode of the guide tube: poor precision, inaccurate deflection direction and long time consumption.
Therefore, the existing deep water drilling positioning mode has the problem of poor positioning accuracy, and the stress uniformity of the curtain is directly affected by overlarge positioning deviation of the anchor rod holes, so that the curtain is possibly invalid in the running process. The error of underwater drilling is not allowed to be too large in other underwater construction projects.
Disclosure of Invention
The invention provides a device and a positioning method for underwater positioning, which solve the problems of difficult and inaccurate positioning of the existing deep water drilling. The specific technical scheme is as follows.
The utility model provides a device for locating under water, its includes water platform, guide sleeve, fluid accommodation part, suspension, connecting rope, centering part and position determination mechanism, the guide sleeve movably sets up on the water platform, the guide sleeve for but the free swing of water platform, the top of guide sleeve is located the surface of water top and is provided with the fluid accommodation part, the top of fluid accommodation part has the uncovered and the uncovered sets up around the guide sleeve, fluid has in the fluid accommodation part, the suspension is in on the fluid just the suspension spanes the opening at guide sleeve top, the one end of connecting rope is connected the suspension is located the position of opening top, the other end of connecting rope with centering part is connected, centering part is used for making the other end of connecting rope tends to or is located the center of guide sleeve, centering part is located in the guide sleeve and be close to the bottom of guide sleeve, the bottom of guide sleeve is located under water, position determination mechanism is used for measuring the position that the connecting rope links to each other with the suspension.
Further, the centering component is a spherical hanging hammer, and the difference between the inner diameter of the guide sleeve and the outer diameter of the spherical hanging hammer is less than or equal to 4mm. Or the centering component is clamped in the guide sleeve, the connecting rope is connected to the center of the centering component, and the center of the centering component coincides with the axis of the guide sleeve.
Further, a transparent windshield is arranged on the fluid containing component, and the opening, the opening at the top end of the guide sleeve and the suspension piece are all positioned in the inner cavity of the windshield.
Further, the distance between the bottom end of the guide sleeve and the underwater ground surface is not more than 1.5 meters.
Further, two support shafts perpendicular to the axis of the guide sleeve are arranged on the outer surface of the guide sleeve, the two support shafts are symmetrical relative to the axis of the guide sleeve, and the two support shafts are movably placed on the water platform. Preferably, the position of the support shaft is adjustable in the direction of the guide sleeve axis.
Further, the fluid is preferably water.
Further, the position measuring mechanism is a total station, and the total station is arranged on the shore.
Based on the same inventive concept, the invention also relates to a positioning method for underwater positioning, which adopts the device for underwater positioning and mainly comprises the following steps:
1) The guide sleeve is movably arranged on the water platform, so that the top end of the guide sleeve is positioned above the water surface, the bottom end of the guide sleeve is positioned under water, and the guide sleeve is in a hanging state and can swing freely relative to the water platform;
2) The guide sleeve tends to be vertical along with the swing of the guide sleeve, and when the offset of a connecting rope positioned at the top of the guide sleeve from the center of the guide sleeve is smaller than the set offset, the position of one end, connected with the suspension piece, of the connecting rope is measured by using the position measuring mechanism;
3) Judging whether the measured position of the position measuring mechanism belongs to a pre-designed position or not;
4) If the position measured by the position measuring mechanism deviates from the pre-designed position, the position of the water platform is adjusted, and the step 2) is carried out; if the position measuring mechanism measures that the position belongs to the pre-designed position, the position of the water platform is fixed, and the positioning of the underwater position is completed.
Further, the step 1) further includes a step of placing the centering component: the centering component is a spherical hanging hammer, one end of the connecting rope is connected to the position, above the opening, of the suspension piece, the other end of the connecting rope is connected with the spherical hanging hammer, the spherical hanging hammer is placed into the guide sleeve, the spherical hanging hammer is located in the guide sleeve and is close to the bottom end of the guide sleeve, and the connecting rope is in a tightening state.
Further, the step 1) further includes a step of placing the centering component: the centering component is clamped in the guide sleeve and is placed into water along with the guide sleeve, one end of the connecting rope is connected to the position, above the opening, of the suspension piece, the other end of the connecting rope is connected with the centering component, the centering component is positioned in the guide sleeve and is close to the bottom end of the guide sleeve, and the connecting rope is in a tightening state.
The working principle of the invention is as follows: when a predesigned drilling position needs to be found (positioned) under deep water, the water platform is moved to the approximate area of the drilling position, the guide sleeve is in a hanging state and has a tendency of keeping natural sagging, when the water platform is in a natural sagging (vertical state), one end of the connecting rope connecting centering component is positioned in the center of the guide sleeve (or tends to the center of the guide sleeve), one end of the connecting rope connecting suspension piece is positioned in the center of the guide sleeve (or tends to the center of the guide sleeve) because the connecting rope in the guide sleeve cannot bear lateral (horizontal) force, the connecting rope projects the coordinates of the bottom end of the guide sleeve onto the water surface, at the moment, the position of one end of the connecting rope connected with the suspension piece, which is measured by the position measuring mechanism, can obtain position information corresponding to the deep water, and if the position deviates from the predesigned position, the position of the water platform is measured again after the position is adjusted until the predesigned drilling position is found. The position measuring mechanism does not need to wait until the end of the connecting rope, which is connected to the suspension, is completely positioned at the center of the guide sleeve when measuring the position of the end of the connecting rope, and can measure the position of the connecting rope by the position measuring mechanism as long as the deviation between the connecting rope and the center of the guide sleeve is within a set error range (the smaller the deviation is, the smaller the included angle between the guide sleeve and the vertical direction is).
The invention has the following beneficial effects.
1. The guide sleeve can create a still water condition for the connecting rope, so that the influence of water flow on the connecting rope is avoided, and the positioning accuracy is improved; meanwhile, the size of the underwater drilling hole can be limited within the diameter range of the guide sleeve, and the guide sleeve can be used for guiding the anchor rod system into the drilling hole after the drilling hole is completed.
2. The wind shield is arranged above the fluid containing part, so that the suspension part is in a closed state, is less influenced by external factors such as wind and waves, and can be quickly and stably measured and positioned.
3. The positioning device provided by the invention has a simple structure, can be assembled by using the conventional components, has high positioning precision, can rapidly measure the deviation value and the deviation direction of the guide sleeve, and solves the problems of high difficulty and inaccuracy in deep water positioning in the prior art.
Drawings
Fig. 1 is a schematic view of a positioning device according to the present invention.
FIG. 2 is a schematic view of the top end portion of the guide sleeve of the positioning device of the present invention;
FIG. 3 is a schematic view of a modification of the fluid containing member of the positioning device of the present invention;
fig. 4 is a schematic view of the guide sleeve of the positioning device of the present invention in an inclined state.
In the figure: the water platform 1, the guide sleeve 2, the fluid containing component 3, the opening 31, the inner turnup 32, the suspension 4, the connecting rope 5, the centering component 6, the windshield 7 and the supporting shaft 8.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
Referring to fig. 1-4, a device for underwater positioning comprises a water platform 1, a guiding sleeve 2, a fluid containing part 3, a suspension 4, a connecting rope 5, a centering part 6 and a total station (not shown), wherein the guiding sleeve 2 is movably arranged on the water platform 1, the guiding sleeve 2 can freely swing relative to the water platform 1, the top end of the guiding sleeve 2 is positioned above the water surface and is provided with the fluid containing part 3, the top end of the fluid containing part 3 is provided with an opening 31 and the opening 31 is arranged around the guiding sleeve 2, the fluid containing part 3 is internally provided with fluid, the suspension 4 is suspended on the fluid and the suspension 4 spans the opening at the top end of the guiding sleeve 2, one end of the connecting rope 5 is connected to a position above the opening of the suspension 4, the other end of the connecting rope 5 is connected with the centering part 6, the centering part 6 is used for enabling the other end of the connecting rope 5 to be positioned at or tend to be positioned at the center of the guiding sleeve 2, the guiding sleeve 6 is positioned in the position close to the bottom end of the guiding sleeve 2 and is positioned at the bottom end of the guiding sleeve 2 and is connected with the total station 4 at the position of the suspension 4.
The guide sleeve 2 is a straight pipe, and the distance between the bottom end of the guide sleeve and the underwater ground surface (bottom of a reservoir) is not more than 1.5 meters; preferably, the distance is 1 meter, the closer the bottom end of the guide sleeve 2 is to the underwater ground surface, the more accurate the positioning is, but too small a distance easily causes the guide sleeve 2 to touch the underwater ground surface (the bottom of the reservoir) so that the position under the deep water cannot be positioned.
The outer surface of the guide sleeve 2 is provided with two support shafts 8 perpendicular to the axis of the guide sleeve, the two support shafts 8 are symmetrical relative to the axis of the guide sleeve, the two support shafts 8 are movably placed on the water platform 1, so that the guide sleeve 2 can swing freely relative to the water platform 1, and the guide sleeve 2 naturally tends to be in a vertical state due to the fact that the weight of the underwater part of the guide sleeve 2 is large. Preferably, the position of the support shaft 9 can be adjusted along the direction of the axis of the guide sleeve, so that the length of the underwater part of the guide sleeve 2 can be conveniently adjusted to adapt to the positioning of water areas with different depths. It should be noted that the guide sleeve 2 may be disposed on the water platform 1 in other manners, as long as the guide sleeve 2 can only swing with respect to the water platform 1.
The fluid accommodating part 3 is used for accommodating fluid, preferably water, the fluid accommodating part 3 is provided with a transparent windshield 7, the opening at the top end of the guide sleeve 2 and the suspension piece 4 are all positioned in the inner cavity of the windshield 7, and the windshield 7 can be made of transparent acrylic; the suspension 4 is drawn by the connecting rope 5 to drift freely over the fluid. The shape of the fluid containing member 3 is not limited as long as its opening 31 is provided around the guide sleeve 2, such as: the fluid containing member 3 is an annular barrel with an inner rim 32, the inner rim 32 resting on top of the guide sleeve 2 to secure the fluid containing member 3 (see fig. 3). However, it will be appreciated by those skilled in the art that the fluid containment element 3 may be secured to the guide sleeve 2 by other conventional means of securing, such as welding. The suspension 4 does not touch the side wall of the fluid containing member 3 when it drifts on the fluid, the suspension 4 is preferably of transparent material, such as: transparent acrylic material. The suspension member 4 can be cylindrical, the cylindrical suspension member 4 surrounds the top end of the guide sleeve 2, and one end of the connecting rope 5 is connected to the suspension member 4 above the opening; or the suspension member 4 comprises two or more floating bodies and connecting pieces for connecting all the floating bodies, all the floating bodies are distributed around the top end of the guide sleeve 2, the connecting pieces are positioned above the top end opening of the guide sleeve 2, and one end of the connecting rope 5 is connected with the connecting pieces.
The centering component 6 is a spherical hanging hammer, the difference between the inner diameter of the guide sleeve 2 and the outer diameter of the spherical hanging hammer is less than or equal to 4mm, and the spherical hanging hammer straightens the connecting rope 5. Optionally, the shape of the centering component 6 is not limited, and the centering component 6 is clamped in the guide sleeve, for example: the connecting rope 5 is connected to the center of the centering member 6 by two or more clamping parts which are abutted against the inner wall of the guide sleeve 2, and the center of the centering member 6 coincides with the axis of the guide sleeve 2. The centering member 6 serves to ensure that the connecting cord 5 connected to the centering member 6 is at or towards the axis of the guide sleeve 2. Therefore, when the guide sleeve 2 is in a vertical state, one end of the connecting rope 5 connected with the suspension piece 4 is also positioned or tends to be positioned at the axle center of the guide sleeve 2, and the position corresponding to the bottom end of the deep-water lower guide sleeve 2 can be accurately obtained by measuring the position of the end of the connecting rope 5 connected with the suspension piece 4.
The working principle of the invention is as follows: when a predesigned drilling position needs to be found (positioned) under deep water, the water platform is moved to the approximate area of the drilling position, the guide sleeve 2 is in a hanging state and has a tendency to keep natural sagging, when the water platform is in a natural sagging (vertical state), one end of the connecting rope 5 connected with the centering component 6 is positioned at the center of the guide sleeve 2 (or tends to be positioned at the center of the guide sleeve), one end of the connecting rope 5 connected with the suspension piece 4 is also positioned at the center of the guide sleeve 2 (or tends to be positioned at the center of the guide sleeve) because the connecting rope 5 positioned in the guide sleeve 2 does not bear lateral (horizontal direction), at the moment, the position of one end of the connecting rope connected with the suspension piece, which is measured by the total station, can obtain position information corresponding to the deep water, and if the position deviates from the predesigned position, the position of the water platform is adjusted and then is measured again until the predesigned drilling position is found. When the total station measures the position of the end of the connecting rope connected to the suspension member, it is not necessary to wait until the end of the connecting rope connected to the suspension member is completely located at the center of the guide sleeve, and the position of the connecting rope can be measured by the total station as long as the deviation L between the centers of the connecting rope 5 and the guide sleeve 2 is within a set error range (the smaller the deviation is the smaller the included angle between the guide sleeve and the vertical direction is).
Based on the same inventive concept, the invention also relates to a positioning method for underwater positioning, which adopts the device for underwater positioning and mainly comprises the following steps:
1) The guide sleeve 2 is movably arranged on the water platform 1, so that the top end of the guide sleeve 2 is positioned above the water surface, the bottom end of the guide sleeve 2 is positioned under water, and the guide sleeve 2 is in a hanging state and can swing freely relative to the water platform 1;
2) As the swing of the guide sleeve 2 tends to be stable, the guide sleeve 2 tends to be in a vertical state, and when the offset L of the connecting rope 5 positioned at the top of the guide sleeve 2 from the center of the guide sleeve 2 is smaller than a set offset, the total station is used for measuring the position of one end of the connecting rope 5 connected with the suspension piece 4;
3) Judging whether the measured position of the total station belongs to a pre-designed position or not;
4) If the total station measures that the position deviates from the pre-designed position, the step 2) is carried out after the position of the water platform is adjusted; if the total station measures that the position belongs to the position designed in advance, the position of the water platform is fixed, and the positioning of the underwater position is completed. When the deviation between the measured position of the total station and the pre-designed position exceeds a set error range, the measured position of the total station is determined to deviate from the pre-designed position; and when the measured position of the total station is within a set error range from the pre-designed position, determining that the measured position of the total station belongs to the pre-designed position.
Further, the step 1) further includes a step of placing the centering component: the centering component is a spherical hanging hammer, one end of the connecting rope is connected to the position, above the opening, of the suspension piece, the other end of the connecting rope is connected with the spherical hanging hammer, the spherical hanging hammer is placed into the guide sleeve, the spherical hanging hammer is located in the guide sleeve and is close to the bottom end of the guide sleeve, and the connecting rope is in a tightening state.
Further, the step 1) further includes a step of placing the centering component: the centering component is clamped in the guide sleeve and is placed into water along with the guide sleeve, one end of the connecting rope is connected to the position, above the opening, of the suspension piece, the other end of the connecting rope is connected with the centering component, the centering component is positioned in the guide sleeve and is close to the bottom end of the guide sleeve, and the connecting rope is in a tightening state.
The embodiment relies on low-temperature water treatment engineering of a hydropower station. The low-temperature water treatment of a certain hydropower station adopts a water-proof curtain wall mode, and the main engineering comprises a shore-based cable tower, a water-proof curtain wall, an on-water buoyancy tank system, an underwater anchoring system and the like. Wherein the underwater anchoring system adopts a rock-based ground anchor. The ground anchor is designed to have tensile strength of 600KN, and the anchor rod body adopts high-strength screw steel. 45 anchor rod holes are arranged in total, the hole distance is 8m, and the maximum underwater depth is 120m. The hole making is implemented by adopting an acoustic wave drilling machine matched with a screw drilling tool, the inner diameter phi of the guide sleeve is 178mm, and the diameter phi of the anchor rod hole is 130mm. Because of considering the complex overall stress condition of the waterproof curtain cloth, the deviation of the hole positions of the anchor rods Kong Shiji is required to be not more than 20cm in order to ensure that the stress of the curtain cloth accords with the design as much as possible. The experimental acceptance of the embodiment proves that the deviation of the hole positions of the anchor rod holes is all within the design range, and the engineering requirements can be met.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The device for underwater positioning is characterized by comprising a water platform, a guide sleeve, a fluid containing part, a suspension piece, a connecting rope, a centering part and a position measuring mechanism, wherein the guide sleeve is movably arranged on the water platform, the guide sleeve swings freely relative to the water platform, the top end of the guide sleeve is positioned above the water surface and is provided with the fluid containing part, the top end of the fluid containing part is provided with an opening, the opening is arranged around the guide sleeve, the fluid containing part is internally provided with fluid, the suspension piece is suspended on the fluid, the suspension piece spans the opening at the top end of the guide sleeve, one end of the connecting rope is connected to a position above the opening, the other end of the connecting rope is connected with the centering part, the centering part is used for enabling the other end of the connecting rope to tend to or be positioned in the center of the guide sleeve, the centering part is positioned in the guide sleeve and is close to the bottom end of the guide sleeve, the bottom end of the guide sleeve is positioned under water, and the position measuring mechanism is used for measuring the position of the connecting rope;
the centering component is clamped in the guide sleeve, the connecting rope is connected to the center of the centering component, and the center of the centering component coincides with the axis of the guide sleeve; or the centering component is a spherical hanging hammer, and the difference between the inner diameter of the guide sleeve and the outer diameter of the spherical hanging hammer is less than or equal to 4mm;
the distance between the bottom end of the guide sleeve and the underwater ground surface is not more than 1.5 meters.
2. A device for underwater positioning as in claim 1 wherein the fluid containment element is provided with a transparent windshield and the opening, the opening at the top end of the guide sleeve and the suspension are all located in the interior cavity of the windshield.
3. A device for underwater positioning according to claim 1, characterized in that on the outer surface of the guiding sleeve there are provided two supporting shafts perpendicular to the guiding sleeve axis, two of which are symmetrical with respect to the guiding sleeve axis, two of which rest movably on the water platform.
4. A device for underwater positioning as claimed in claim 3, characterized in that the position of the support shaft is adjustable in the direction of the guide sleeve axis.
5. An apparatus for underwater positioning as in claim 1 wherein the fluid is water.
6. An apparatus for underwater positioning as in claim 1, wherein the position determining means is a total station, the total station being located on shore.
7. A positioning method for underwater positioning, which adopts the device for underwater positioning according to any one of the preceding claims 1 to 6, and mainly comprises the following steps:
1) The guide sleeve is movably arranged on the water platform, so that the top end of the guide sleeve is positioned above the water surface, the bottom end of the guide sleeve is positioned under water, and the guide sleeve is in a hanging state and can swing freely relative to the water platform;
2) The guide sleeve tends to be vertical along with the swing of the guide sleeve, and when the offset of a connecting rope positioned at the top of the guide sleeve from the center of the guide sleeve is smaller than the set offset, the position of one end, connected with the suspension piece, of the connecting rope is measured by using the position measuring mechanism;
3) Judging whether the measured position of the position measuring mechanism belongs to a pre-designed position or not;
4) If the position measured by the position measuring mechanism deviates from the pre-designed position, the position of the water platform is adjusted, and the step 2) is carried out; if the position measuring mechanism measures that the position belongs to the pre-designed position, the position of the water platform is fixed, and the positioning of the underwater position is completed.
8. A positioning method for underwater positioning according to claim 7, characterized in that said step 1) further comprises the step of placing centering members: the centering component is a spherical hanging hammer, one end of the connecting rope is connected to the position, above the opening, of the suspension piece, the other end of the connecting rope is connected with the spherical hanging hammer, the spherical hanging hammer is placed into the guide sleeve, the spherical hanging hammer is located in the guide sleeve and is close to the bottom end of the guide sleeve, and the connecting rope is in a tightening state.
9. A positioning method for underwater positioning according to claim 7, characterized in that said step 1) further comprises the step of placing centering members: the centering component is clamped in the guide sleeve and is placed into water along with the guide sleeve, one end of the connecting rope is connected to the position, above the opening, of the suspension piece, the other end of the connecting rope is connected with the centering component, the centering component is positioned in the guide sleeve and is close to the bottom end of the guide sleeve, and the connecting rope is in a tightening state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810500347.0A CN108756850B (en) | 2018-05-23 | 2018-05-23 | Device and method for underwater positioning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810500347.0A CN108756850B (en) | 2018-05-23 | 2018-05-23 | Device and method for underwater positioning |
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| CN108756850A CN108756850A (en) | 2018-11-06 |
| CN108756850B true CN108756850B (en) | 2023-10-31 |
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