CN104406568A - Device and method for monitoring settlement of ground surface in deep water area - Google Patents
Device and method for monitoring settlement of ground surface in deep water area Download PDFInfo
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- CN104406568A CN104406568A CN201410664466.1A CN201410664466A CN104406568A CN 104406568 A CN104406568 A CN 104406568A CN 201410664466 A CN201410664466 A CN 201410664466A CN 104406568 A CN104406568 A CN 104406568A
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- silicon pressure
- pressure sensor
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- fluid
- tube
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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
Abstract
The invention provides a device and a method for monitoring the settlement of a ground surface in a deep water area. The device is characterized in that a liquid storage tank of a silicon pressure type settlement instrument is fixedly arranged on a settlement plate, a silicon pressure sensor is fixedly arranged on a benchmark pile, the liquid storage tank and the pressure sensor are flexibly connected with each other to form a closed self-balancing system placed in a foundation soil layer; then, the change of an elevation difference is converted through testing the change of pressure of liquid in a system, and further, the settlement quantity of the ground surface is obtained. The device has the advantages of simple structure, high convenience for operation, strong adaptability, high measurement precision and the like, and real-time automatic monitoring can be realized, so that the labor cost is greatly reduced, and the working efficiency is improved, therefore the application value is wide.
Description
Technical field
The present invention relates to soil body settlement monitoring technology field, particularly a kind of profundal zone surface subsidence monitoring device and method.
Background technology
In embankment, foundation treatment engineering, need surface subsidence monitoring be carried out, to understand the compression deformation situation of ground in construction process, guarantee construction safety.To paddle at present surface subsidence monitoring mainly sedimentation plate method in embanking project, be laid in ground top layer by sedimentation plate, when ground generation sedimentation, will the decline of sedimentation plate elevation be caused, manually surveyed the observation reading to realize subsidence value by spirit-leveling instrument.But the method exists use limitation and shortcomings: 1) profundal zone fill is comparatively far away apart from water front, conventional measurement of the level, without relatively stable construction of platform, tests difficulty, and is subject to the impact of the factors such as measuring staff is long, stormy waves is larger, and measuring accuracy cannot ensure; 2) sedimentation plate is laid in levee body, and measuring staff must surface, very large to construction interference, and very easily destroys by construction machinery, protects very difficult; 3) sedimentation plate damage accident takes place frequently, and repair very difficult even cannot in-situ immobilization, therefore, cannot ensure the continuity of data, monitoring security control cannot realize especially; 4) instrumental resolution is lower, and manually can only survey and read, and accuracy of observation is poor, inefficiency, and labour intensity is large.
Summary of the invention
For solving the problems that prior art exists in profundal zone use, protection of instrumentation and data acquisition etc., technical scheme provided by the invention is:
A kind of profundal zone surface subsidence monitoring device, comprise reference stake, silicon pressure type sedimentometer, sedimentation plate, fixation kit, it is characterized in that: described silicon pressure type sedimentometer includes fluid reservoir, silicon pressure sensor, described fluid reservoir is fixed on sedimentation plate by fixation kit, described silicon pressure sensor is fixed on reference stake by fixation kit, adopt between fluid reservoir and silicon pressure sensor and flexibly connect, form airtight self-balancing system, be positioned in foundation soil.
Described silicon pressure type sedimentometer also includes snorkel, fluid-through tube, transmission cable, and be communicated with snorkel and fluid-through tube between fluid reservoir and silicon pressure sensor, described snorkel and fluid-through tube all adopt flexible material, and external application flexible rubber hose is protected; Transmission cable one end is connected with silicon pressure sensor, and the other end is connected with external data collecting device.
Described reference stake comprises steel pipe and anchor head, and anchor head is fixed in bottom steel pipe, is placed in the firm soil layer of ground along boring; Described sedimentation plate comprises settlement plate, spring leaf, and spring leaf to be evenly fixed on settlement plate and to be overhangingly placed on ground top layer; Described fixation kit comprises bearing, ring flange; Described steel pipe top is fixed in below described bearing, affixed with silicon pressure sensor above described bearing; Described fluid reservoir and described ring flange affixed, described ring flange is fixed in described settlement plate bottom.
Described settlement plate is provided with bolt hole, by bolt and described ring flange affixed, described fluid reservoir adopts screw thread to be fixed on ring flange; Described bearing bottom and described steel pipe top adopt screw thread affixed, and described holder top and silicon pressure sensor adopt screw thread affixed; Described anchor head adopts screw thread to be fixed in bottom steel pipe, and described steel pipe can merogenesis, and adjacent segments steel pipe adopts screw thread affixed.
Described ring flange and described bearing are provided with hanger system protection wire rope, described protection rope capacity is determined to ground surface distance according to bearing, and is slightly less than snorkel and fluid-through tube length, is used for protection snorkel, fluid-through tube not stress when burying underground.
Suspension ring system lifting wire rope is provided with above described settlement plate.
Described spring leaf uniform welding is at described settlement plate periphery.
Described snorkel is individual plastic pipe, and described fluid-through tube is double joint plastic tube.
When ground generation sedimentation, the distance caused between sedimentation plate and bearing is changed, namely the distance between silicon pressure sensor and fluid reservoir changes, the change of fluid pressure in fluid-through tube is measured by silicon pressure sensor, and then converse the change of difference of elevation between silicon pressure sensor and fluid reservoir, again compared with initial difference of elevation, the settling amount on ground top layer can be conversed.
The affixed mode of each assembly of profundal zone of the present invention surface subsidence monitoring device be not limited to above-mentioned screw thread affixed, weld affixed, other affixed modes can also be adopted.
A using method for profundal zone as above surface subsidence monitoring device, comprises the following steps:
A preset position coordinates is aimed in drilling platform aperture by (), fixing anchor line starts boring, is drilled into predetermined soil layer, at the bottom of peace and quiet hole;
(b) by reference stake assembly from bottom upwards successively affixed limit, limit put into boring, until reference stake top arrive drilling platform aperture;
C the silicon pressure sensor of silicon pressure type sedimentometer is fixed on reference stake by fixation kit by (), fluid reservoir is fixed on sedimentation plate by fixation kit, slowly transfer along boring after whole device connects, until anchor head arrives the steady soil of foot of hole bottom reference stake; After inspection apparatus signal is intact, transmission cable is made in order tie up and draw boring, sedimentation plate is steadily positioned over ground top layer;
D () connects transmission cable by external data collecting device, test obtains the original pressure difference P between described silicon pressure sensor and fluid reservoir
0, by formula H
0=P
0/ (ρ g) converses the initial difference of elevation H between silicon pressure sensor and fluid reservoir
0; In this formula, ρ represents the fluid density in fluid-through tube; G represents acceleration of gravity, value 9.8N/kg;
E () after a time, along with the generation of settlement of foundation, the relative distance between silicon pressure sensor and fluid reservoir changes, and again records the pressure differential P between silicon pressure sensor and fluid reservoir
i, and by formula H
i=P
i/ (ρ g) converses the difference of elevation H between silicon pressure sensor and fluid reservoir
i; In this formula, ρ represents the fluid density in fluid-through tube; G represents acceleration of gravity, value 9.8N/kg;
F () uses H
i-H
0the changing value Δ H of difference of elevation between the silicon pressure sensor obtained and fluid reservoir
ibe the settling amount on ground top layer during this period of time.
The invention has the beneficial effects as follows:
Profundal zone of the present invention surface subsidence monitoring device and method, by silicon pressure sensor by silicon pressure type sedimentometer between fluid reservoir and silicon pressure sensor the change of relative distance be converted into the change of difference of elevation, and then obtain ground surface settlement amount; Adopt between fluid reservoir and silicon pressure sensor and flexibly connect; do not affect by soil layer lateral deformation; and a whole set of monitoring device is all positioned at soil layer boring; transmission cable is only had to draw boring; reduce the interference of instrument to construction, be easy to protection, and not by external environment influence such as tide, stormy waves, construction machineries; improve testing reliability, the operating mode that prior art cannot use can be suitable for.This device has that structure is simple, easy to operate, adaptable, measuring accuracy advantages of higher.In addition, by data acquisition module, also can realize real-time automatic monitoring, greatly reduce cost of labor, there is the advantages such as work efficiency is high, good stability.The present invention effectively overcomes the shortcomings existed in prior art, is applicable to the foundation treatment engineering of various complex working condition, is with a wide range of applications.
Accompanying drawing illustrates:
Fig. 1 is using state structural representation of the present invention.
In figure: 1-reference stake; 11-steel pipe; 12-anchor head; 2-silicon pressure type sedimentometer; 21-fluid reservoir; 22-silicon pressure sensor; 23-snorkel; 24-fluid-through tube; 25-transmission cable; 3-sedimentation plate; 31-settlement plate; 32-spring leaf; 33-suspension ring; 34-lifts wire rope; 4-fixation kit; 41-bearing; 42-ring flange; 43-bolt; 44-hanger; 45-protects wire rope; 5-holes;
Embodiment:
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.
As shown in Figure 1, the invention provides a kind of profundal zone surface subsidence monitoring device, comprise reference stake 1, silicon pressure type sedimentometer 2, sedimentation plate 3, fixation kit 4, described silicon pressure type sedimentometer 2 comprises fluid reservoir 21, snorkel 23, fluid-through tube 24, silicon pressure sensor 22, transmission cable 25, snorkel 23 and fluid-through tube 24 is communicated with between fluid reservoir 21 and silicon pressure sensor 22, transmission cable 25 one end is connected with silicon pressure sensor 22, and the other end is connected with external data collecting device; Described reference stake 1 comprises steel pipe 11 and anchor head 12, and anchor head 12 is fixed in bottom steel pipe 11, is placed in the firm soil layer of ground along boring; Described sedimentation plate 3 comprises settlement plate 31, spring leaf 32, and spring leaf 32 to be evenly fixed on settlement plate 31 and to be overhangingly placed on ground top layer; Described fixation kit 4 comprises bearing 41, ring flange 42; ; Described settlement plate 31 is provided with bolt hole, and affixed by bolt 43 and ring flange 42, fluid reservoir 21 adopts screw thread to be fixed on ring flange 42.Bearing 41 bottom and steel pipe 11 top adopt screw thread affixed, and bearing 41 top and silicon pressure sensor 22 adopt screw thread affixed.Anchor head 12 adopts screw thread to be fixed in bottom steel pipe 11, and steel pipe 11 can merogenesis, and adjacent segments steel pipe 11 adopts screw thread affixed.Ring flange 42 and bearing 41 being provided with hanger 44 is protection wire rope 45, and protection wire rope 45 length is determined according to bearing 41 to ground surface distance, and is slightly less than snorkel 23, fluid-through tube 24 length, is used for protection snorkel, fluid-through tube not stress when burying underground.It is lifting wire rope 34 that settlement plate 31 is provided with suspension ring 33 above.Snorkel 23 is individual plastic pipe, and fluid-through tube 24 is double joint plastic tube, and external application flexible rubber hose is protected.
When ground generation sedimentation, by the distance change caused between sedimentation plate 3 and bearing 41, that is cause the distance between silicon pressure sensor 22 and fluid reservoir 21 to change, the change of fluid pressure in fluid-through tube 24 is measured by silicon pressure sensor 22, and then converse the change of difference of elevation between silicon pressure sensor 22 and fluid reservoir 21, again compared with initial difference of elevation, the settling amount on ground top layer can be conversed.
The monitoring method of what the present embodiment provided utilize profundal zone surface subsidence monitoring device, comprises the following steps:
A preset position coordinates is aimed in drilling platform aperture by (), fixing anchor line starts boring, is drilled into predetermined soil layer, at the bottom of peace and quiet hole;
B anchor head 12 is fixed in bottom steel pipe 11 and puts into boring 5 by (), then connected section by section by steel pipe 11, and limit fillet puts into boring 5 until final section steel pipe 11 top arrives drilling platform aperture;
C bearing 41 is threaded onto final section steel pipe 11 top by screw thread by (), silicon pressure sensor 22 is threadedly attached on bearing 41, one end of protection wire rope 45 is tied up on the hanger 44 of bearing 41, protection wire rope 45 is caught to continue slowly to transfer along boring 5 together with the snorkel 23 on silicon pressure sensor 22, fluid-through tube 24, until arrive drilling platform aperture; Fluid reservoir 21 is threadedly attached on ring flange 42, then being fixed on by bolt 43 is welded with on the settlement plate 31 of spring leaf 32, the other end of protection wire rope 45 is tied up on the hanger 44 of ring flange 42, then lifting wire rope 34 is tied up on the suspension ring 33 on settlement plate 31, lifting wire rope 34 is caught to continue slowly to transfer along boring 5, until anchor head 12 arrives bottom boring 5, after inspection apparatus signal is intact, transmission cable 25 is made in order tie up and draw boring 5, sedimentation plate 3 is steadily positioned over ground top layer;
D () connects transmission cable 25 by external data collecting device, test obtains the original pressure difference P between described silicon pressure sensor 22 and fluid reservoir 21
0, by formula H
0=P
0/ (ρ g) converses the initial difference of elevation H between silicon pressure sensor 22 and fluid reservoir 21
0; In this formula, ρ represents the fluid density in fluid-through tube; G represents acceleration of gravity, value 9.8N/kg;
E () after a time, along with the generation of settlement of foundation, the relative distance between silicon pressure sensor 22 and fluid reservoir 21 changes, and again records the pressure differential P between silicon pressure sensor 22 and fluid reservoir 21
i, and by formula H
i=P
i/ (ρ g) converses the difference of elevation H between silicon pressure sensor 22 and fluid reservoir 21
i; In this formula, ρ represents the fluid density in fluid-through tube; G represents acceleration of gravity, value 9.8N/kg;
F () uses H
i-H
0the changing value Δ H of difference of elevation between the silicon pressure sensor 22 obtained and fluid reservoir 21
ibe the settling amount on ground top layer during this period of time.
Invention has been described by reference to the accompanying drawings for above-described embodiment, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (9)
1. a profundal zone surface subsidence monitoring device, comprise reference stake (1), silicon pressure type sedimentometer (2), sedimentation plate (3), fixation kit (4), it is characterized in that: described silicon pressure type sedimentometer (2) includes fluid reservoir (21), silicon pressure sensor (22), described fluid reservoir (21) is connected on sedimentation plate (3) by fixation kit (4), described silicon pressure sensor (22) is connected on reference stake (1) by fixation kit (4), adopt between fluid reservoir (21) and silicon pressure sensor (22) and flexibly connect, form airtight self-balancing system, be positioned in foundation soil.
2. profundal zone according to claim 1 surface subsidence monitoring device, it is characterized in that: described silicon pressure type sedimentometer (2) also includes snorkel (23), fluid-through tube (24), transmission cable (25), snorkel (23) and fluid-through tube (24) is communicated with between fluid reservoir (21) and silicon pressure sensor (22), described snorkel (23) and fluid-through tube (24) all adopt flexible material, and external application flexible rubber hose is protected; Transmission cable (25) one end is connected with silicon pressure sensor (22), and the other end is connected with external data collecting device.
3. profundal zone according to claim 1 surface subsidence monitoring device, it is characterized in that: described reference stake (1) comprises steel pipe (11) and anchor head (12), anchor head (12) is fixed in steel pipe (11) bottom, is placed in the firm soil layer of ground along boring (5); Described sedimentation plate (3) comprises settlement plate (31), spring leaf (32), and it is upper and be overhangingly placed on ground top layer that spring leaf (32) is evenly fixed in settlement plate (31); Described fixation kit (4) comprises bearing (41), ring flange (42); Described bearing (41) below is fixed in described steel pipe (11) top, and described bearing (41) top is affixed with silicon pressure sensor (22); Described fluid reservoir (21) is affixed with described ring flange (42), and described ring flange (42) is fixed in described settlement plate (31) bottom.
4. profundal zone according to claim 3 surface subsidence monitoring device, it is characterized in that: described settlement plate (31) is provided with bolt hole, by bolt and described ring flange (42) affixed, described fluid reservoir (21) adopt screw thread be fixed on ring flange (42); Described bearing (41) bottom and described steel pipe (11) top adopt screw thread affixed, and described bearing (41) top and silicon pressure sensor (22) adopt screw thread affixed; Described anchor head (12) adopts screw thread to be fixed in steel pipe (11) bottom, and described steel pipe (11) can merogenesis, and adjacent segments steel pipe (11) adopts screw thread affixed.
5. profundal zone according to claim 3 surface subsidence monitoring device; it is characterized in that: described ring flange (42) and described bearing (41) being provided with hanger (44) is protection wire rope (45); described protection wire rope (45) length is determined to ground surface distance according to bearing (41), and is slightly less than snorkel (23) and fluid-through tube (24) length.
6. profundal zone according to claim 3 surface subsidence monitoring device, is characterized in that: it is lifting wire rope (34) that described settlement plate (31) is provided with suspension ring (33) above.
7. profundal zone according to claim 3 surface subsidence monitoring device, is characterized in that: described spring leaf (32) uniform welding is at described settlement plate (31) periphery.
8. profundal zone according to claim 2 surface subsidence monitoring device, is characterized in that: described snorkel (23) is individual plastic pipe, and described fluid-through tube (24) is double joint plastic tube.
9. utilize according to claim 1 to 8 any one described in the monitoring method of profundal zone surface subsidence monitoring device, it is characterized in that the method comprises:
A preset position coordinates is aimed in drilling platform aperture by (), fixing anchor line starts boring, is drilled into predetermined soil layer, at the bottom of peace and quiet hole;
(b) by reference stake (1) assembly from bottom upwards successively affixed limit, limit put into boring (5), until reference stake (1) top arrive drilling platform aperture;
C the silicon pressure sensor (22) of silicon pressure type sedimentometer (2) is fixed on reference stake (1) by fixation kit (4) by (), fluid reservoir (21) is fixed on sedimentation plate (3) by fixation kit (4), slowly transfer along boring (5) after whole device connects, until reference stake (1) bottom anchor head (12) arrives the steady soil of boring (5) bottom; After inspection apparatus signal is intact, transmission cable (25) is made in order tie up and draw boring (5), sedimentation plate (3) is steadily positioned over ground top layer;
D () connects transmission cable (25) by external data collecting device, test obtains the original pressure difference P between described silicon pressure sensor (22) and fluid reservoir (21)
0, by formula H
0=P
0/ (ρ g) converses the initial difference of elevation H between silicon pressure sensor (22) and fluid reservoir (21)
0; In this formula, ρ represents the fluid density in fluid-through tube (24); G represents acceleration of gravity, value 9.8N/kg;
E () after a time, along with the generation of settlement of foundation, relative distance between silicon pressure sensor (22) and fluid reservoir (21) changes, and again records the pressure differential P between silicon pressure sensor (22) and fluid reservoir (21)
i, and by formula H
i=P
i/ (ρ g) converses the difference of elevation H between silicon pressure sensor (22) and fluid reservoir (21)
i; In this formula, ρ represents the fluid density in fluid-through tube (24); G represents acceleration of gravity, value 9.8N/kg;
F () uses H
i-H
0the changing value Δ H of difference of elevation between the silicon pressure sensor (22) obtained and fluid reservoir (21)
ibe the settling amount on ground top layer during this period of time.
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| CN105606069A (en) * | 2016-03-01 | 2016-05-25 | 中国电建集团贵阳勘测设计研究院有限公司 | Flexible pipe standard mark structure |
| CN106049397A (en) * | 2016-07-08 | 2016-10-26 | 四川建筑职业技术学院 | Construction method for mounting layer-divided sinking apparatus in deep compressible soil layer |
| CN106480871A (en) * | 2016-11-28 | 2017-03-08 | 大连海大恒信土木工程技术有限公司 | A kind of automatization's settlement monitoring device and method being suitable for Yu Haiyang land reclamation construction usage |
| CN106592563A (en) * | 2017-01-09 | 2017-04-26 | 河海大学 | Device for monitoring foundation settlement and measuring method thereof |
| CN106948329A (en) * | 2017-03-28 | 2017-07-14 | 中国港湾工程有限责任公司 | The monitoring device and its installation method of reclaimation area deep sedimentation |
| CN109736285A (en) * | 2019-03-07 | 2019-05-10 | 中交第一航务工程勘察设计院有限公司 | A kind of long-range underwater settlement automatic monitoring system in coastal waters |
| CN110093912A (en) * | 2019-04-04 | 2019-08-06 | 中勘资源勘探科技股份有限公司 | A kind of surface subsidence deformation monitoring device and its construction method |
| CN110132230A (en) * | 2019-05-27 | 2019-08-16 | 杭州绿农环境工程有限公司 | A kind of pit is reclaimed with soil settling phase monitoring device |
| CN111912385A (en) * | 2020-07-25 | 2020-11-10 | 重庆六零七工程勘察设计有限公司 | Long-acting supervision system for settlement of house |
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| CN105606069A (en) * | 2016-03-01 | 2016-05-25 | 中国电建集团贵阳勘测设计研究院有限公司 | Flexible pipe standard mark structure |
| CN106049397A (en) * | 2016-07-08 | 2016-10-26 | 四川建筑职业技术学院 | Construction method for mounting layer-divided sinking apparatus in deep compressible soil layer |
| CN106480871A (en) * | 2016-11-28 | 2017-03-08 | 大连海大恒信土木工程技术有限公司 | A kind of automatization's settlement monitoring device and method being suitable for Yu Haiyang land reclamation construction usage |
| CN106480871B (en) * | 2016-11-28 | 2019-05-17 | 大连海大恒信土木工程技术有限公司 | A kind of automation settlement monitoring device and method being applicable in Yu Haiyang's land reclamation construction usage |
| CN106592563A (en) * | 2017-01-09 | 2017-04-26 | 河海大学 | Device for monitoring foundation settlement and measuring method thereof |
| CN106592563B (en) * | 2017-01-09 | 2018-08-14 | 河海大学 | A kind of device and its measurement method of monitoring settlement of foundation |
| CN106948329B (en) * | 2017-03-28 | 2022-12-06 | 中国港湾工程有限责任公司 | Device for monitoring deep settlement of sea reclamation area and installation method thereof |
| CN106948329A (en) * | 2017-03-28 | 2017-07-14 | 中国港湾工程有限责任公司 | The monitoring device and its installation method of reclaimation area deep sedimentation |
| CN109736285A (en) * | 2019-03-07 | 2019-05-10 | 中交第一航务工程勘察设计院有限公司 | A kind of long-range underwater settlement automatic monitoring system in coastal waters |
| CN109736285B (en) * | 2019-03-07 | 2024-01-23 | 中交第一航务工程勘察设计院有限公司 | Automatic monitoring system for offshore remote underwater foundation settlement |
| CN110093912A (en) * | 2019-04-04 | 2019-08-06 | 中勘资源勘探科技股份有限公司 | A kind of surface subsidence deformation monitoring device and its construction method |
| CN110132230A (en) * | 2019-05-27 | 2019-08-16 | 杭州绿农环境工程有限公司 | A kind of pit is reclaimed with soil settling phase monitoring device |
| CN110132230B (en) * | 2019-05-27 | 2021-07-30 | 浙江绿农生态环境有限公司 | Pit is reclaimed with earth state monitoring devices that subsides |
| CN111912385A (en) * | 2020-07-25 | 2020-11-10 | 重庆六零七工程勘察设计有限公司 | Long-acting supervision system for settlement of house |
| CN111912385B (en) * | 2020-07-25 | 2021-12-28 | 重庆六零七工程勘察设计有限公司 | Long-acting supervision system for settlement of house |
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