CN110455235A - Dam dam crest core-wall horizontal displacement monitoring device and method - Google Patents
Dam dam crest core-wall horizontal displacement monitoring device and method Download PDFInfo
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- CN110455235A CN110455235A CN201910764566.4A CN201910764566A CN110455235A CN 110455235 A CN110455235 A CN 110455235A CN 201910764566 A CN201910764566 A CN 201910764566A CN 110455235 A CN110455235 A CN 110455235A
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000012806 monitoring device Methods 0.000 title claims abstract description 19
- 238000013507 mapping Methods 0.000 claims abstract description 86
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 79
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 239000008397 galvanized steel Substances 0.000 claims description 3
- 239000002689 soil Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 244000098338 Triticum aestivum Species 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/06—Earth-fill dams; Rock-fill dams
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses dam dam crest core-wall horizontal displacement monitoring device and methods, including be fixedly connected with dam crest core-wall observation pier, forced centering base, the mapping pedestal to match with forced centering base, the observation pier cope level is lower than crest elevation, the forced centering base is fixedly mounted on observation pier top surface, the mapping pedestal is detachably connected on above forced centering base, surveys and draws connection mapping component on pedestal；It further include for covering the protection cap at the top of observation pier, when protection cap is placed at the top of observation pier, protection cap cope level is identical as dam facing elevation.The purpose of the present invention is to provide dam dam crest core-wall horizontal displacement monitoring device and methods, accuracy of observation is influenced by vehicle collision to solve the problems, such as that the observation pier of dam dam crest in the prior art influences dam crest vehicle pass-through and observation pier is easy, and realizes the purpose for avoiding that observation pier interferes dam crest vehicle normal pass and accuracy of observation is not influenced by passing vehicle.
Description
Technical field
The present invention relates to dam safety monitoring fields, and in particular to dam dam crest core-wall horizontal displacement monitoring device and side
Method.
Background technique
In recent years, China has built up more including the large-scale hydroelectric projects such as waxy common wheat power station, long sill may power station
A gravelly soil core wall rockfill dam belongs to such dam type in two river mouth power stations, the double Jiangkou power stations built at present.For such
Dam, safety monitoring project are of crucial importance.
In the prior art, for gravelly soil core wall rockfill dam, dam crest core-wall horizontal displacement observation is mixed using traditional
Solidifying soil observation pier (such as Fig. 1).This observation pier base dimensions are generally 1.0m*1.0m, the high 1.2m of pier.Since such structure is observed
Pier is higher than dam facing 1.2m or more, and volume is larger, and being built at the top of dam crest core-wall will affect dam crest vehicle pass-through, and in vehicle
It is also easy to be collided during current, so that reliable dam deformation can not be measured accurately.In addition, the structure observation pier is built in
At the top of the big axis of dam, it is overall beautiful also to influence dam crest.
Summary of the invention
The purpose of the present invention is to provide dam dam crest core-wall horizontal displacement monitoring device and methods, to solve the prior art
The observation pier of middle dam dam crest influences dam crest vehicle pass-through and observation pier is easy the problem of being influenced accuracy of observation by vehicle collision,
Realize the purpose for avoiding that observation pier interferes dam crest vehicle normal pass and accuracy of observation is not influenced by passing vehicle.
The present invention is achieved through the following technical solutions:
Dam dam crest core-wall horizontal displacement monitoring device, including be fixedly connected with dam crest core-wall observation pier, forced centering
Pedestal, the mapping pedestal to match with forced centering base, the observation pier cope level are lower than crest elevation, the pressure pair
Middle pedestal is fixedly mounted on observation pier top surface, and the mapping pedestal is detachably connected on above forced centering base, surveys and draws pedestal
Component is surveyed and drawn in upper connection；It further include when protection cap is placed at the top of observation pier, being protected for covering the protection cap at the top of observation pier
Tops elevation is identical as dam facing elevation.
In the prior art, the observation pier of gravelly soil core wall rockfill dam is built at the top of dam crest core-wall that will affect dam crest vehicle logical
Row, and be also easy to be collided during vehicle pass-through, it is this this hair so that reliable dam deformation can not be measured accurately
Bright proposition dam dam crest core-wall horizontal displacement monitoring device, this Shen different higher than the setting of dam facing 1.2m from traditional observation pier
Though please in observation pier be still fixedly connected with dam crest core-wall, its cope level be lower than crest elevation, be the top of observation pier
Face is located at the lower section of dam crest, and forced centering base is fixedly mounted on observation pier top surface.Mapping pedestal is detachably connected on pressure pair
Above middle pedestal, mapping pedestal is used for the mapping component for the side of being connected thereto.When mapping pedestal, mapping component are not installed on forcing
When on centering pedestal, the application can cover the top of observation pier by protection cap, at this point, protection cap cope level and dam facing
Elevation is identical, that is, the top surface of protection cap is flushed with dam facing.The present invention is in routine use, by mapping pedestal, mapping component
It is removed from forced centering base, covers observation pier using protection cap, at this time since the top surface of protection cap is flushed with dam facing,
Dam crest is whole, continuous plane, interferes vehicle etc. in the passage of dam crest without any observation pier stretched out upwards, more will not
There is the phenomenon that observation pier is influenced accuracy of observation by vehicle collision.When carrying out the horizontal displacement of dam crest core-wall, only it need to open or move
Protection cap is walked, mapping pedestal is fixedly connected on forced centering base, then mapping component is fixedly connected on mapping pedestal,
Leveling mapping component, can carry out normally observing operation in core-wall displacement process.Therefore, the present apparatus is solved in gravelly soil
The problem of passage of dam crest present in the top horizontal displacement observation of core wall dam core-wall is disturbed, can be widely applied in such dam,
And it can also be promoted the use of in the observation of other types of dam top.
Further, the mapping component includes the A component being detachably connected, B component, the B component and mapping pedestal
Match, can be mounted on mapping pedestal, the A component is detachably connected on the top of B component, is arranged on the A component
For installing the prism card slot of mapping prism head；When the B component is mounted on mapping pedestal, the top surface of the A component
It is N higher than dam facing, wherein N >=1.2m.In the present solution, since A component is detachably connected on the top of B component, when height foot
When enough, B component can be used only and connect surveying instrument, be specifically such as directly connected to GPS antenna instrument of surveying and mapping i.e. in B component top
Can, it can also be attached by adapter by being connected between screw thread.And when B component height is inadequate, by A component
It is connected to the top of B component, then instrument of surveying and mapping is installed on A component, height can be increased, greatly improve the use of the application
Flexibility.Prism card slot is used to install the prism head of mapping, and a prism card preferably can also directly be arranged on B component
Slot, or prism head is installed by way of the adapter of connecting band prism card slot.In addition, split type A component, B component,
The length that mapping component can be reduced is readily transported carrying, reduces the risk that deformation etc. is damaged in transportational process.
First level instrument is set on the mapping pedestal, the second level meter is set on the A component.
The A component, B component are the coaxial body of rod, and the bottom end of A component and the top of B component are connected through a screw thread；It is described
The connector base that the bottom end setting of B component matches with mapping pedestal；The connector base detachably connects with mapping pedestal
It connects.B component top is preferably provided with external screw thread, is used not only for connecting with A component, additionally it is possible to for logical with instrument of surveying and mapping etc.
It is connected with the Fast Installation of equipment.
Fixing lug boss on the A component, second level meter are arranged on the boss.It is second horizontal by boss
Instrument provides reliable and stable installation station.
Groove is arranged in the observation pier top surface, and forced centering base is arranged in groove；It further include being buckled in groove top to turn
Angle steel at angle, the side of the angle steel, which is embedded, to be embedded in recess sidewall, the other side in observation pier top surface.Protection cap is for covering
The open end of the groove so that forced centering base has special and sufficient installation space, while by the setting of angle steel, making
It obtains when dismantling or installing mapping pedestal, recess sidewall will not be caused to collide with, further raising is to the guarantor at the top of observation pier
Shield ability avoids impaired the case where influencing accuracy of observation at the top of observation pier.
The protection cap is made by galvanized steel plain sheet, and protection cap side is arranged waterproof apron, and setting mentions at the top of protection cap
Hand.It is removed by handle convenient for lifting protection cap.
Dam dam crest core-wall horizontal displacement monitoring method, comprising the following steps:
(a) make observation pier cope level lower than crest elevation, forced centering base is fixedly mounted on observation pier top surface, uses
Protection cap covers observation pier, so that protection cap cope level is identical as dam facing elevation, it is current that dam crest carries out normal traffic；
(b) when carrying out the horizontal displacement of dam crest core-wall, protection cap is opened, mapping pedestal is fixedly connected on forced centering base
On seat；
(c) mapping component is fixedly connected on mapping pedestal, leveling mapping component is seen in core-wall displacement process
It surveys.
Preferably, the specific connection method of component is surveyed and drawn in the step (c) are as follows: by the connector base of B component bottom ends
It is fixed on mapping pedestal, then A component is connected on B component by screw thread, then the survey with prism head is installed on A component
Draw instrument.
Preferably, in the step (c) leveling mapping component method are as follows: the foot screw of adjustment mapping pedestal, by the
One level meter determines that mapping pedestal is horizontal；Check whether A component is horizontal by the second level meter later: if A component level, starting
It moves horizontally core-wall and is observed；If A component is not horizontal, after correction to level, then starts to move horizontally core-wall and be seen
It surveys.
Height of the A component top away from dam facing should at least 1.2m to meet the requirement of existing specifications of surveys guarantee measurement essence
Degree.
Compared with prior art, the present invention having the following advantages and benefits:
1, dam dam crest core-wall horizontal displacement monitoring device and method of the present invention by mapping pedestal, is surveyed in routine use
It draws component to remove from forced centering base, covers observation pier using protection cap, at this time since the top surface of protection cap and dam facing are neat
It is flat, therefore dam crest is whole, continuous plane, interferes vehicle etc. in the logical of dam crest without any observation pier stretched out upwards
Row, is more not in the phenomenon that observation pier is influenced accuracy of observation by vehicle collision.
2, dam dam crest core-wall horizontal displacement monitoring device and method of the present invention, when carrying out the horizontal displacement of dam crest core-wall,
Protection cap only need to be opened or be removed, mapping pedestal is fixedly connected on forced centering base, then mapping component is fixedly connected
On mapping pedestal, leveling mapping component can carry out normally observing operation in core-wall displacement process.Therefore the application solution
The problem of dam crest present in gravelly soil core wall dam core-wall top horizontal displacement observation of having determined passage is disturbed, in such dam
It can be widely applied, and can also be promoted the use of in the observation of other types of dam top.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the prior art；
Fig. 2 is the elevation of observation pier in the specific embodiment of the invention；
Fig. 3 is the partial enlarged view in Fig. 2 at C；
Fig. 4 is the structural schematic diagram that pedestal is surveyed and drawn in the specific embodiment of the invention；
Fig. 5 is the side view of B component in the specific embodiment of the invention；
Fig. 6 is the structural schematic diagram of A component in the specific embodiment of the invention；
Fig. 7 is the schematic diagram that representative section is monitored in the specific embodiment of the invention.
Label and corresponding parts title in attached drawing:
1- forced centering base, 2- survey and draw pedestal, 3- observation pier, 4- protection cap, 5-A component, 6-B component, 7- prism card
Slot, 8- first level instrument, the second level meter of 9-, 10- connector base, 11- boss, 12- groove, 13- dam crest, 14- core-wall,
15- angle steel.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1:
Dam dam crest core-wall horizontal displacement monitoring device as shown in Figure 2, including the observation being fixedly connected with dam crest core-wall
Pier 3, forced centering base 1, the mapping pedestal 2 to match with forced centering base 1,3 cope level of observation pier are lower than dam
Crest level, the forced centering base 1 are fixedly mounted on 3 top surface of observation pier, and the mapping pedestal 2 is detachably connected on pressure pair
Middle 1 top of pedestal, surveys and draws connection mapping component on pedestal 2；It further include the protection cap 4 for covering 3 top of observation pier, protection cap
4 when being placed on 3 top of observation pier, and 4 cope level of protection cap is identical as dam facing elevation.
In the present embodiment, mapping pedestal 2 is to come card GDF322 pedestal, remaining equivalent existing mapping pedestal is also applicable；
Observation pier foundation is contacted with dam crest core-wall by reinforcing bar, and dedicated forced centering base, pedestal cope level are installed in observation pier top surface
Lower than crest elevation 50mm.
Embodiment 2:
Dam dam crest core-wall horizontal displacement monitoring device as shown in Figures 2 to 7, on the basis of embodiment 1, the survey
Drawing component includes the A component 5 being detachably connected, B component 6, and the B component 6 matches with mapping pedestal 2, can be mounted on survey
It draws on pedestal 2, the A component 5 is detachably connected on the top of B component 6, is arranged on the A component 5 for installing mapping rib
The prism card slot 7 of camera lens；When the B component 6 is mounted on mapping pedestal 2, the top surface of the A component 5 is 1.2m higher than dam facing.
First level instrument 8 is set on the mapping pedestal 2, second level meter 9 is set on the A component 5.3 top surface of observation pier is set
Groove 12 is set, forced centering base 1 is arranged in groove 12；It further include the angle steel 15 being buckled at 12 top corner of groove, it is described
The side of angle steel 15, which is embedded, to be embedded in 12 side wall of groove, the other side in 3 top surface of observation pier.The protection cap 4 is by galvanized steel plain sheet system
It forms, 4 side of protection cap is arranged waterproof apron, the 4 hinged handle in top of protection cap.
Wherein, first level instrument 8, the second level meter 9 are air-bubble level；And first level instrument 8 is in the present embodiment
Come what card GDF322 pedestal carried.
Preferably, the A component 5, B component 6 are the coaxial body of rod, and the bottom end of A component 5 and the top of B component 6 pass through spiral shell
Line connection；The connector base 10 that the bottom end setting of the B component 6 matches with mapping pedestal 2；The connector base 10 with
Mapping pedestal 2 is detachably connected.Fixing lug boss 11 on the A component 5, second level meter 9 are arranged on the boss 11.
In the present embodiment, since A component is detachably connected on the top of B component, when height is enough, B component can be used only
Surveying instrument is connected, is specifically such as directly connected to GPS antenna instrument of surveying and mapping in B component top, it can be by between screw thread
Connection, can also be attached by adapter.And when B component height is inadequate, A component is connected to the top of B component, then
Instrument of surveying and mapping is installed on A component, height can be increased, greatly improve the using flexible of the application.Prism card slot is used for
The prism head of mapping is installed, a prism card slot preferably can also be directly set on B component, or pass through connecting band prism
The mode of the adapter of card slot installs prism head.
In the present embodiment, A component, B component are formed a whole with screwed connection, it is desirable that come card in leveling after assembling
When the level(l)ing bubble of GDF322 pedestal, the level(l)ing bubble on A component is also placed in the middle, it is ensured that A, B rod piece are in a vertical state.Wherein A
Top prism card slot and existing instrument of surveying and mapping prism head are general when component designs, and rod piece screw thread is also general with instrument available, to test
Rod piece sag is demonstrate,proved, in A component away from the level(l)ing bubble for installing the second level meter at the 400mm of top；The connector base of B feature bottom
With come card GDF322 pedestal or existing similar mapping product is general, be general with the instrument of surveying and mappings such as GPS antenna at the top of connecting rod
Screw thread.A component, B component materials select white steel to be process.
In the present invention, other than it can normally monitor the horizontal displacement of dam crest core-wall, additionally it is possible on forced centering base
Benchmark be measuring point, using precise leveling method monitoring dam crest core-wall vertical displacement, compared to the prior art
Middle needs are arranged for the monitoring mode of bench mark on the basis of the observation pier of 1.2m high, it is no longer necessary to separately installed level mark
Point, has saved cost.Preferably, which uses first order level(l)ing precision observation.
Preferably, as shown in fig. 7, the observation pier of dam crest two sides is due to originally smaller to the interference of vehicle pass-through, Ke Yishe
It is set to traditional structure, and is located at the observation pier at dam crest center, then application is the observation pier in the application.
In the present embodiment, forced centering base 1, which installs accuracy of alignment, should be less than 0.1mm, and horizontal tilt degree is not greater than 4 '.
Embodiment 3:
Dam dam crest core-wall horizontal displacement monitoring method, comprising the following steps:
(a) make 3 cope level of observation pier lower than crest elevation, forced centering base 1 is fixedly mounted on 3 top surface of observation pier,
Observation pier 3 is covered using protection cap 4, so that 4 cope level of protection cap is identical as dam facing elevation, it is logical that dam crest carries out normal traffic
Row；
(b) when carrying out the horizontal displacement of dam crest core-wall, protection cap 4 is opened, mapping pedestal 2 is fixedly connected on forced centering
On pedestal 1；
(c) connector base 10 of 6 bottom end of B component is fixed on mapping pedestal 2, then is connected A component 5 by screw thread
On B component 6, then the instrument of surveying and mapping with prism head is installed on A component 5；The foot screw of adjustment mapping pedestal 2, by the
One level meter 8 determines that mapping pedestal 2 is horizontal；Check whether A component 5 is horizontal by the second level meter 9 later: if 5 water of A component
It is flat, start to move horizontally core-wall and be observed；If A component 5 is not horizontal, after correction to level, then start to move horizontally core-wall
And it is observed.
In the present embodiment, observation pier and observation device are installed on core wall dam elevation of top surface hereinafter, both ensure that dam facing was smooth
Beauty does not interfere dam crest traffic yet.Dam facing observation pier part is replaced using movable observation device, by installing the second level meter
Ensure device sag.Device total height is to meet the requirement of existing specifications of surveys away from dam facing 1.2m, ensure that measurement accuracy.This
Method solves the problems, such as to answer extensively in such dam in gravelly soil core wall dam core-wall top horizontal displacement observation
With the observation of, other class dam tops can also refer to using.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (10)
1. dam dam crest core-wall horizontal displacement monitoring device, including be fixedly connected with dam crest core-wall observation pier (3), forced centering
Pedestal (1), the mapping pedestal (2) to match with forced centering base (1), which is characterized in that observation pier (3) cope level
Lower than crest elevation, the forced centering base (1) is fixedly mounted on observation pier (3) top surface, and the mapping pedestal (2) is detachable
It is connected to above forced centering base (1), connection mapping component in mapping pedestal (2)；It further include for covering observation pier (3) top
The protection cap (4) in portion, when protection cap (4) is placed at the top of observation pier (3), protection cap (4) cope level is identical as dam facing elevation.
2. dam dam crest core-wall horizontal displacement monitoring device according to claim 1, which is characterized in that the mapping component
Including A component (5), the B component (6) being detachably connected, the B component (6) matches with mapping pedestal (2), can be mounted on
It surveys and draws on pedestal (2), the A component (5) is detachably connected on the top of B component (6), is arranged on the A component (5) for pacifying
Fill the prism card slot (7) of mapping prism head；When the B component (6) is mounted in mapping pedestal (2), the A component (5)
Top surface it is N higher than dam facing, wherein N >=1.2m.
3. dam dam crest core-wall horizontal displacement monitoring device according to claim 2, which is characterized in that the mapping pedestal
(2) first level instrument (8) are set on, the second level meter (9) are set on the A component (5).
4. dam dam crest core-wall horizontal displacement monitoring device according to claim 2, which is characterized in that the A component
(5), B component (6) is the coaxial body of rod, and the bottom end of A component (5) and the top of B component (6) are connected through a screw thread；The B component
(6) connector base (10) that bottom end setting matches with mapping pedestal (2)；The connector base (10) and mapping pedestal
(2) it is detachably connected.
5. dam dam crest core-wall horizontal displacement monitoring device according to claim 3, which is characterized in that the A component (5)
Upper fixing lug boss (11), second level meter (9) are arranged on the boss (11).
6. dam dam crest core-wall horizontal displacement monitoring device according to claim 1, which is characterized in that the observation pier
(3) top surface setting groove (12), forced centering base (1) setting is in groove (12)；It further include being buckled at the top of groove (12) to turn
Angle steel (15) at angle, the side of the angle steel (15) are embedded to be embedded in groove (12) side wall, the other side and push up in observation pier (3)
Face.
7. dam dam crest core-wall horizontal displacement monitoring device according to claim 1, which is characterized in that the protection cap
(4) it is made by galvanized steel plain sheet, protection cap (4) side is arranged waterproof apron, and handle is arranged at the top of protection cap (4).
8. dam dam crest core-wall horizontal displacement monitoring method, which comprises the following steps:
(a) make observation pier (3) cope level lower than crest elevation, forced centering base (1) is fixedly mounted on observation pier (3) top
Face covers observation pier (3) using protection cap (4), so that protection cap (4) cope level is identical as dam facing elevation, dam crest is carried out just
Normal traffic is current；
(b) it when carrying out the horizontal displacement of dam crest core-wall, opens protection cap (4), mapping pedestal (2) is fixedly connected on forced centering
On pedestal (1)；
(c) mapping component is fixedly connected in mapping pedestal (2), leveling mapping component is seen in core-wall displacement process
It surveys.
9. dam dam crest core-wall horizontal displacement monitoring method according to claim 8, which is characterized in that the step (c)
The specific connection method of middle mapping component are as follows: the connector base (10) of B component (6) bottom end is fixed in mapping pedestal (2),
A component (5) is connected on B component (6) by screw thread again, then the instrument of surveying and mapping with prism head is installed on A component (5).
10. dam dam crest core-wall horizontal displacement monitoring method according to claim 9, which is characterized in that the step (c)
The method of middle leveling mapping component are as follows: the foot screw of adjustment mapping pedestal (2) determines mapping pedestal by first level instrument (8)
(2) horizontal；Check whether A component (5) are horizontal by the second level meter (9) later: if A component (5) is horizontal, starting to move horizontally
Core-wall is simultaneously observed；If A component (5) is not horizontal, after correction to level, then starts to move horizontally core-wall and be observed.
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| CN201910764566.4A CN110455235A (en) | 2019-08-19 | 2019-08-19 | Dam dam crest core-wall horizontal displacement monitoring device and method |
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| US20030229997A1 (en) * | 2002-06-18 | 2003-12-18 | Albert Gamal | Modular laser system for level determination |
| EP1524495A1 (en) * | 2003-10-14 | 2005-04-20 | Kabushiki Kaisha Topcon | Laser irradiating system |
| CN203881339U (en) * | 2014-04-09 | 2014-10-15 | 天津大学 | Detachable monitoring pier |
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| CN206540552U (en) * | 2017-03-21 | 2017-10-03 | 中冶成都勘察研究总院有限公司 | A kind of concealed observation pier |
| CN207703220U (en) * | 2018-01-03 | 2018-08-07 | 西南交通大学 | A kind of base type centering rod measuring device component |
| CN210070889U (en) * | 2019-08-19 | 2020-02-14 | 中国电建集团成都勘测设计研究院有限公司 | Dam crest core wall horizontal displacement monitoring devices |
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