CN112212827A - Large-deformation settlement observation device for deep water area of dam - Google Patents
Large-deformation settlement observation device for deep water area of dam Download PDFInfo
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- CN112212827A CN112212827A CN202011341952.1A CN202011341952A CN112212827A CN 112212827 A CN112212827 A CN 112212827A CN 202011341952 A CN202011341952 A CN 202011341952A CN 112212827 A CN112212827 A CN 112212827A
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- pipe
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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Abstract
The invention discloses a large deformation settlement observation device for a deep water area of a dam, which comprises a reference point platform and a plurality of concrete measuring piers, wherein a liquid storage tank is arranged on the reference point platform, a first osmometer is arranged at the lower part of the liquid storage tank, an installation plate and a sealing box are arranged above the concrete measuring piers, a partition plate is vertically arranged in the middle of the sealing box and divides the inner space of the sealing box into an installation chamber and a liquid storage chamber, a second osmometer is arranged in the installation chamber, the pressure inlet end of the second osmometer penetrates through the partition plate and then is communicated with the liquid storage chamber, an emptying branch pipe is arranged at the top of the liquid storage chamber, infusion branch pipes are arranged at the lower part of the liquid storage chamber, an infusion main pipe is arranged above the sealing box, the end part of each infusion branch pipe is communicated with an infusion main pipe, the end part of the infusion main pipe is communicated with the. The invention has convenient operation and high measurement precision, can realize automatic measurement and has obvious economic value and social value.
Description
Technical Field
The invention relates to the technical field of settlement monitoring, in particular to a large deformation settlement observation device for a deep water area of a dam.
Background
Since the 20 th century, dam-crossing events of reservoirs occur in succession in a plurality of countries, disastrous disasters and huge economic losses are brought to related countries, people pay high attention to dam safety monitoring, and the importance of reservoir dam safety monitoring work is remarkable along with the further promotion of the standard management of hydraulic engineering. The main projects of dam safety monitoring include deformation monitoring, seepage monitoring, stress strain monitoring, temperature monitoring, dam surrounding environment monitoring and the like, the deformation monitoring can visually reflect the operation state of the dam, the abnormal state of a plurality of dams occurs, the abnormal state is reflected through the abnormal deformation monitoring value at first, and the abnormal state is influenced by the geological condition and the historical condition of dam construction, a plurality of dam foundations are directly built on soft soil and a rock foundation covering layer, so that the problems of non-uniformity of settlement deformation and prominent large deformation disease occur after the dam water storage operation, the deformation monitoring project is listed as a first-choice monitoring project of dam safety monitoring, and particularly the large deformation settlement monitoring in a deep water area of the dam becomes one of important safety monitoring and evaluation indexes of the dam. At present, dam settlement monitoring usually adopts several modes such as a settlement rod, a water pipe type settlement gauge, a hydraulic type settlement gauge or an electromagnetic type settlement gauge, but the problems of inconvenient operation, incapability of meeting the requirement of measurement precision or incapability of realizing automatic measurement and the like exist, so that the measurement efficiency is low, and the method cannot be widely applied to settlement safety monitoring of dams. Therefore, the development of the observation device for the large deformation settlement in the deep water area of the dam, which is convenient to operate, high in measurement accuracy and capable of realizing automatic measurement, is objectively needed.
Disclosure of Invention
The invention aims to provide the observation device for the large deformation settlement of the deep water area of the dam, which is convenient to operate, high in measurement accuracy and capable of realizing automatic measurement.
The invention aims to realize the purpose, and the device comprises a reference point platform and a plurality of concrete measuring piers, wherein the reference point platform is arranged on a bank slope on one side of a dam foundation of a dam, the concrete measuring piers are cast on the dam foundation of the dam, a liquid storage tank is arranged on the reference point platform, a liquid inlet pipe is arranged at the top of the liquid storage tank, a first osmometer is arranged at the lower part of the liquid storage tank, and a cable of the first osmometer is communicated with a measuring platform of the dam.
A plurality of screw rods are uniformly distributed on the edge of each concrete measuring pier, an embedded plate is arranged at the lower end of each screw rod and is poured inside the concrete measuring pier, a mounting plate is arranged above the concrete measuring pier, the mounting plate is fixedly connected with the screw rods through nuts after penetrating through the screw rods, a seal box is arranged on the mounting plate, a partition plate is vertically arranged in the middle of the seal box and divides the inner space of the seal box into a mounting chamber and a liquid storage chamber, a second osmometer is arranged in the mounting chamber, a cable of the second osmometer penetrates through the top of the mounting chamber and is connected with a measuring platform of the dam, the cable is fixedly connected with the top of the mounting chamber in a sealing way, a pressure inlet end of the second osmometer penetrates through the partition plate and is communicated with the liquid storage chamber, the second osmometer is fixedly connected with the partition plate in a sealing way, an evacuation branch pipe is arranged at the top of the liquid storage chamber, an evacuation valve is arranged, the top of seal box is provided with the infusion house steward, and the tip of every infusion branch pipe all communicates with the infusion house steward, and the one end shutoff of infusion house steward, the other end and the lower part intercommunication of liquid reserve tank, infusion branch pipe and infusion house steward are the flexible tube.
Furthermore, the material of seal box is stainless steel.
Furthermore, a first flexible protection pipe is sleeved on the cable outside the installation chamber, and the lower end of the first flexible protection pipe is fixedly connected with the top of the installation chamber in a sealing mode.
Furthermore, a second flexible protection pipe is sleeved on the infusion main pipe, a third flexible protection pipe is sleeved on the infusion branch pipe, one end of the third flexible protection pipe is fixedly connected with the outer wall of the liquid storage chamber in a sealing mode, and the other end of the third flexible protection pipe is communicated with the second flexible protection pipe.
Further, a spiral plate is arranged in an annular space between the infusion main pipe and the second flexible protection pipe, the inner side of the spiral plate is fixedly connected with the outer wall of the infusion main pipe, and a gap is reserved between the outer side of the spiral plate and the inner wall of the second flexible protection pipe.
Further, all be provided with the clamp on the second flexible protection pipe of every seal box top, the bottom of clamp is passed through the telescopic link and is connected with the top of seal box.
Further, an emptying header pipe is arranged above the infusion header pipe, the upper end of each emptying branch pipe is communicated with the emptying header pipe, one end of the emptying header pipe is blocked, the other end of the emptying header pipe is connected with a liquid collecting box arranged on one side of the liquid storage box, the liquid collecting box and the liquid storage box are communicated through a return pipe, and a return valve is arranged on the return pipe.
Furthermore, a protective cover is arranged outside the first osmometer and fixed on the outer wall of the liquid storage tank, and heat-insulating materials are filled inside the installation chamber and inside the protective cover.
The concrete measuring pier is arranged at the appointed position of the dam foundation of the dam, the mounting plate is fixed through the screw and the nut, the sealing box is arranged on the mounting plate, the second osmometer is arranged in the sealing box in a sealing mode, the second osmometer is not influenced by underwater filling and overwater filling, interference and damage caused by construction are avoided, the outlet end and the pressure inlet end of the second osmometer are separated through the partition plate, liquid at the pressure inlet end is prevented from contacting with a cable at the outlet end, and the use safety performance of the second osmometer is improved. In the using process of the invention, the pressure measuring liquid is injected into the liquid storage tank through the liquid inlet pipe, the pressure measuring liquid is respectively conveyed to each infusion branch pipe through the infusion main pipe and then enters each liquid storage chamber through the infusion branch pipes, in the process, the air in each pipeline can be collected into the liquid storage chamber, the emptying valve is opened finally, the air is discharged from the emptying branch pipe at the top of the liquid storage chamber, the emptying valve is closed after the air is emptied, when the measuring point is settled, the second osmometer in the sealed box is lowered to change the elevation between the second osmometer and the liquid storage box, and the measured hydraulic pressure change value is transmitted to the measuring platform of the dam through the second osmometer, the measured pressure is transmitted to the measuring platform of the dam through the first osmometer, and finally the high difference value is calculated through conversion and is compared with the result measured last time, so that the settlement value of the measuring point can be calculated. The invention has convenient operation and high measurement precision, can realize automatic measurement and has obvious economic value and social value.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of node A in FIG. 1;
in the figure: 1-datum point platform, 2-concrete pier, 3-bank slope, 4-liquid storage tank, 5-liquid inlet pipe, 6-first osmometer, 7-screw rod, 8-embedded plate, 9-mounting plate, 10-seal box, 11-partition plate, 12-mounting chamber, 13-liquid storage chamber, 14-second osmometer, 15-cable, 16-liquid conveying branch pipe, 17-liquid conveying main pipe, 18-first flexible protection pipe, 19-second flexible protection pipe, 20-third flexible protection pipe, 21-spiral plate, 22-hoop, 23-telescopic rod, 24-emptying main pipe, 25-liquid storage tank, 26-return pipe, 27-return valve, 28-protective cover, 29-heat-insulating material and 30-emptying branch pipe.
Detailed Description
The present invention is further described with reference to the drawings, but the present invention is not limited thereto in any way, and any modification or improvement based on the present invention is within the protection scope of the present invention.
As shown in fig. 1-2, the invention comprises a reference point platform 1 and a plurality of concrete measuring piers 2, wherein the reference point platform 1 is arranged on a bank slope 3 on one side of a dam foundation of a dam, the concrete measuring piers 2 are cast on the dam foundation of the dam, a liquid storage tank 4 is installed on the reference point platform 1, a liquid inlet pipe 5 is arranged at the top of the liquid storage tank 4, a first osmometer 6 is arranged at the lower part of the liquid storage tank 4, the first osmometer 6 is an existing instrument and can be directly selected and used in the market, one end of the first osmometer 6 is connected with a cable 15, the other end of the first osmometer 6 is a pressure inlet end, the pressure inlet end is in contact with pressure measuring liquid to measure the pressure of the pressure measuring liquid, and the cable 15 of the first osmometer 6 is communicated with a measuring platform of the dam.
A plurality of screw rods 7 are uniformly distributed on the edge of each concrete measuring pier 2, a pre-embedded plate 8 is arranged at the lower end of each screw rod 7, the pre-embedded plate 8 is poured inside the concrete measuring pier 2, an installation plate 9 is arranged above the concrete measuring pier 2, the installation plate 9 is penetrated on the screw rods 7 and then is fastened and connected through nuts, a seal box 10 is arranged on the installation plate 9, a partition plate 11 is vertically arranged in the middle of the seal box 10, the partition plate 11 divides the inner space of the seal box 10 into an installation chamber 12 and a liquid storage chamber 13, a second osmometer 14 is arranged in the installation chamber 12, the second osmometer 14 and the first osmometer 6 are of the same specification, a cable 15 of the second osmometer 14 penetrates through the top of the installation chamber 12 and then is connected with a measuring platform of the dam, the cable 15 is fixedly connected with the top of the installation chamber 12 in a sealing manner, the pressure inlet end of the second osmometer 14 penetrates through the partition plate 11 and then is communicated, the second osmometer 14 is fixedly connected with the partition plate 11 in a sealing mode, an emptying branch pipe 30 is arranged at the top of the liquid storage chamber 13, an emptying valve is arranged on the emptying branch pipe 30, a liquid conveying branch pipe 16 is arranged at the lower portion of the liquid storage chamber 13, a liquid conveying main pipe 17 is arranged above the sealing box 10, the end portion of each liquid conveying branch pipe 16 is communicated with the liquid conveying main pipe 17, one end of the liquid conveying main pipe 17 is plugged, the other end of each liquid conveying branch pipe 16 is communicated with the lower portion of the liquid storage tank 4, and the liquid conveying branch pipes 16 and.
The concrete measuring pier 2 is arranged at the appointed position of the dam foundation of the dam, the mounting plate 9 is fixed through the screw 7 and the nut, the sealing box 10 is arranged on the mounting plate 9, the second osmometer 14 is arranged in the sealing box 10 in a sealing mode, the second osmometer 14 is not influenced by underwater filling and water filling, interference and damage caused by construction are avoided, the outlet end and the inlet end of the second osmometer 14 are separated through the partition plate 11, liquid at the inlet end is prevented from contacting with the cable 15 at the outlet end, and the use safety performance of the second osmometer 14 is improved. In the using process of the invention, pressure measuring liquid is injected into a liquid storage tank 4 through a liquid inlet pipe 5, the pressure measuring liquid is respectively conveyed into each liquid conveying branch pipe 16 through a liquid conveying main pipe 17 and then enters each liquid storage chamber 13 through the liquid conveying branch pipes 16, in the process, air in each pipeline can be collected into the liquid storage chamber 13, finally, an emptying valve is opened, the air is discharged from an emptying branch pipe 30 at the top of the liquid storage chamber 13, the emptying valve is closed after the air is emptied, when a measuring point is settled, a second osmometer 14 in a sealed box 10 descends along with the air, so that the elevation change between the second osmometer 14 and the liquid storage tank 4 is caused, at the moment, the measured hydraulic pressure change value is transmitted to a measuring platform of a dam through the second osmometer 14, the measured pressure is transmitted to the measuring platform of the dam through a first osmometer 6, finally, the height difference value is calculated through conversion and compared with the result measured last time, the sedimentation value of the measuring point can be calculated.
The seal box 10 is made of stainless steel, the seal box 10 is located in water for a long time, and the stainless steel can prevent rusting and corrosion and prolong the service life.
The cover is equipped with first flexible protection pipe 18 on the outside cable 15 of installation room 12, and the sealed fixed connection in top of the lower extreme of first flexible protection pipe 18 and installation room 12, and first flexible protection pipe 18 has the guard action to cable 15, separates cable 15 and water, improves the security performance.
The main infusion pipe 17 is sleeved with a second flexible protection pipe 19, the branch infusion pipe 16 is sleeved with a third flexible protection pipe 20, one end of the third flexible protection pipe 20 is fixedly connected with the outer wall of the liquid storage chamber 13 in a sealing way, the other end of the third flexible protection pipe is communicated with the second flexible protection pipe 19, the second flexible protection pipe 19 and the third flexible protection pipe 20 can respectively play a role in protecting the main infusion pipe 17 and the branch infusion pipe 16, the main infusion pipe 17 and the branch infusion pipe 16 are separated from water, the main infusion pipe 17 and the branch infusion pipe 16 are prevented from being corroded by water, the service life of the main infusion pipe 17 and the branch infusion pipe 16 is prolonged, the main infusion pipe can be prevented from being influenced by underwater filling and water filling, and,
the annular space between the main infusion pipe 17 and the second flexible protection pipe 19 is internally provided with a spiral plate 21, the inner side of the spiral plate 21 is fixedly connected with the outer wall of the main infusion pipe 17, a gap is reserved between the outer side of the spiral plate 21 and the inner wall of the second flexible protection pipe 19, friction can be avoided between the main infusion pipe 17 and the second flexible protection pipe 19 through the arrangement of the spiral plate 21, and the main infusion pipe 17 is prevented from being broken due to friction.
All be provided with clamp 22 on the flexible protection tube 19 of second above every seal box 10, the bottom of clamp 22 is passed through telescopic link 23 and is connected with the top of seal box 10, fixes the flexible protection tube 19 of second in the top of seal box 10 through telescopic link 23 and clamp 22 for flexible protection tube 19 of second can only reciprocate, and can not swing at will along with rivers.
An emptying header pipe 24 is arranged above the infusion header pipe 17, the upper end of each emptying branch pipe 30 is communicated with the emptying header pipe 24, one end of the emptying header pipe 24 is blocked, the other end of the emptying header pipe 24 is connected with a liquid collecting tank 25 arranged on one side of the liquid storage tank 4, the liquid collecting tank 25 is communicated with the liquid storage tank 4 through a return pipe 26, the return pipe 26 is provided with a return valve 27, in the actual observation process, the pressure measuring liquid can be pure water or other available liquids, before the pressure measuring liquid is put into use formally, the pressure measuring liquid is required to be introduced into the infusion header pipe 17, the infusion branch pipes 16 and the liquid storage chamber 13 through the liquid storage tank 4, so that air or bubbles in the pressure measuring liquid are emptied, particularly, when the discharged pressure measuring liquid does not contain any more bubbles, in the process, a lot of pressure measuring liquid can be discharged, in order to avoid the waste of the pressure measuring liquid, the pressure measuring liquid containing the bubbles is discharged into the, the pressure measuring liquid is returned to the liquid storage tank 4 for continuous use.
The outside of the first osmometer 6 is provided with a protective cover 28, the protective cover 28 is fixed on the outer wall of the liquid storage tank 4, the inside of the mounting chamber 12 and the inside of the protective cover 28 are filled with heat-insulating materials 29, because the osmometer can expand with heat and contract with cold along with the change of ambient temperature, the instrument can generate strain along with the change of temperature, the observed value of the instrument also changes along with the change of temperature, in order to reduce the influence of ambient temperature on the instrument, the heat-insulating materials 29 which are not easy to corrode, such as asbestos, are used for being densely filled in the mounting chamber 12 and the protective cover 28, the temperature of the instrument is relatively constant or the temperature change rate of the instrument is reduced, and the measurement error of the osmo.
Claims (8)
1. The utility model provides a big deformation of dam deep water district subsides observation device which characterized in that: the device comprises a datum point platform (1) and a plurality of concrete measuring piers (2), wherein the datum point platform (1) is arranged on a bank slope (3) on one side of a dam foundation of a dam, the concrete measuring piers (2) are poured on the dam foundation of the dam, a liquid storage tank (4) is mounted on the datum point platform (1), a liquid inlet pipe (5) is arranged at the top of the liquid storage tank (4), a first osmometer (6) is arranged at the lower part of the liquid storage tank (4), and a cable (15) of the first osmometer (6) is communicated with a measuring platform of the dam;
a plurality of screw rods (7) are uniformly distributed on the edge of each concrete measuring pier (2), an embedded plate (8) is arranged at the lower end of each screw rod (7), the embedded plate (8) is poured inside the concrete measuring pier (2), a mounting plate (9) is arranged above the concrete measuring pier (2), the mounting plate (9) penetrates through the screw rods (7) and is fixedly connected with the screw rods through nuts, a sealing box (10) is arranged on the mounting plate (9), a partition plate (11) is vertically arranged in the middle of the sealing box (10), the partition plate (11) divides the inner space of the sealing box (10) into a mounting chamber (12) and a liquid storage chamber (13), a second osmometer (14) is arranged in the mounting chamber (12), a cable (15) of the second osmometer (14) penetrates through the top of the mounting chamber (12) and is connected with a measuring platform of a large dam, and the cable (15) is fixedly connected with the top of the mounting chamber (12) in a sealing manner, the pressure inlet end of the second osmometer (14) penetrates through the partition plate (11) and then is communicated with the liquid storage chamber (13), the second osmometer (14) is fixedly connected with the partition plate (11) in a sealing mode, the top of the liquid storage chamber (13) is provided with an emptying branch pipe (30), the emptying branch pipe (30) is provided with an emptying valve, the lower portion of the liquid storage chamber (13) is provided with a liquid conveying branch pipe (16), a liquid conveying main pipe (17) is arranged above the sealing box (10), the end portion of each liquid conveying branch pipe (16) is communicated with the liquid conveying main pipe (17), one end of the liquid conveying main pipe (17) is blocked, the other end of the liquid conveying main pipe is communicated with the lower portion of the liquid storage box (4), and the liquid conveying branch pipes (16) and the liquid conveying main pipe.
2. The large deformation settlement observation device for the deep water area of the dam as claimed in claim 1 wherein the material of the seal box (10) is stainless steel.
3. The device for observing the large deformation and sedimentation in the deep water area of the dam as claimed in claim 1, wherein a first flexible protection pipe (18) is sleeved on the cable (15) outside the installation chamber (12), and the lower end of the first flexible protection pipe (18) is fixedly connected with the top of the installation chamber (12) in a sealing manner.
4. The device for observing the large deformation and sedimentation in the deep water area of the dam as claimed in claim 1, wherein a second flexible protection tube (19) is sleeved on the main infusion tube (17), a third flexible protection tube (20) is sleeved on the branch infusion tube (16), one end of the third flexible protection tube (20) is fixedly connected with the outer wall of the liquid storage chamber (13) in a sealing manner, and the other end of the third flexible protection tube is communicated with the second flexible protection tube (19).
5. The device for observing the large deformation and sedimentation in the deep water area of the dam according to claim 4, wherein a spiral plate (21) is arranged in an annular space between the main liquid conveying pipe (17) and the second flexible protection pipe (19), the inner side of the spiral plate (21) is fixedly connected with the outer wall of the main liquid conveying pipe (17), and a gap is reserved between the outer side of the spiral plate (21) and the inner wall of the second flexible protection pipe (19).
6. The observation device for large deformation and settlement in the deep water area of the dam is characterized in that a clamp (22) is arranged on the second flexible protection pipe (19) above each seal box (10), and the bottom of the clamp (22) is connected with the top of the seal box (10) through a telescopic rod (23).
7. The device for observing the large deformation settlement in the deep water area of the dam according to claim 1, wherein an emptying header pipe (24) is arranged above the liquid conveying header pipe (17), the upper end of each emptying branch pipe (30) is communicated with the emptying header pipe (24), one end of the emptying header pipe (24) is blocked, the other end of the emptying header pipe is connected with a liquid collecting tank (25) arranged on one side of the liquid storage tank (4), the liquid collecting tank (25) is communicated with the liquid storage tank (4) through a return pipe (26), and the return pipe (26) is provided with a return valve (27).
8. The device for observing the large deformation and settlement of the deep water area of the dam as claimed in claim 1, wherein a protective cover (28) is arranged outside the first osmometer (6), the protective cover (28) is fixed on the outer wall of the liquid storage tank (4), and the heat insulation material (29) is filled in the installation chamber (12) and the protective cover (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011341952.1A CN112212827A (en) | 2020-11-24 | 2020-11-24 | Large-deformation settlement observation device for deep water area of dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011341952.1A CN112212827A (en) | 2020-11-24 | 2020-11-24 | Large-deformation settlement observation device for deep water area of dam |
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| Publication Number | Publication Date |
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| CN112212827A true CN112212827A (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011341952.1A Pending CN112212827A (en) | 2020-11-24 | 2020-11-24 | Large-deformation settlement observation device for deep water area of dam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091696A (en) * | 2021-03-18 | 2021-07-09 | 中交四航局第五工程有限公司 | System and method for removing accumulated gas in liquid measurement pipeline |
-
2020
- 2020-11-24 CN CN202011341952.1A patent/CN112212827A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091696A (en) * | 2021-03-18 | 2021-07-09 | 中交四航局第五工程有限公司 | System and method for removing accumulated gas in liquid measurement pipeline |
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