CN208309659U - A kind of soil layer excavation face pawl nail type activity sedimentometer - Google Patents

A kind of soil layer excavation face pawl nail type activity sedimentometer Download PDF

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Publication number
CN208309659U
CN208309659U CN201820893358.5U CN201820893358U CN208309659U CN 208309659 U CN208309659 U CN 208309659U CN 201820893358 U CN201820893358 U CN 201820893358U CN 208309659 U CN208309659 U CN 208309659U
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CN
China
Prior art keywords
plug
soil layer
rod
bar
sedimentation
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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CN201820893358.5U
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Chinese (zh)
Inventor
李桂林
吕鹏飞
郭金婷
古茜倩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Guodian Dadu River Dagangshan Hydropower Development Co Ltd
Guodian Dadu River Hydropower Development Co Ltd
Original Assignee
China Guodian Dadu River Dagangshan Hydropower Development Co Ltd
Guodian Dadu River Hydropower Development Co Ltd
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Application filed by China Guodian Dadu River Dagangshan Hydropower Development Co Ltd, Guodian Dadu River Hydropower Development Co Ltd filed Critical China Guodian Dadu River Dagangshan Hydropower Development Co Ltd
Priority to CN201820893358.5U priority Critical patent/CN208309659U/en
Application granted granted Critical
Publication of CN208309659U publication Critical patent/CN208309659U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model belongs to optic foundation settlement detector, disclose a kind of soil layer excavation face pawl nail type activity sedimentometer, including casing and sedimentation bar, the casing is driven into soil layer excavation face and measures the sedimentation bar from casing interpolation underground layer and at the top of casing to sedimentation bar situation of movement with measuring device achievees the effect that monitoring settles;Sedimentation bar insertion end is equipped with plug, is equipped with the plug pin that can be pierced by plug in the plug, is equipped in sedimentation bar and connect with plug pin and plug pin is pushed to be pierced by or the control-rod of retraction plug.The utility model structure is simple, can quickly be positioned by the openable pawl pin structure being equipped with, to reach preferable retention effect, to improve measurement accuracy.

Description

A kind of soil layer excavation face pawl nail type activity sedimentometer
Technical field
The utility model belongs to settlement of foundation monitoring technology field, and in particular to a kind of soil layer excavation face pawl nail type activity is heavy Instrument drops.
Background technique
Ground can all generate sedimentation under building load effect, if settlement of foundation, especially relative settlement, beyond building Object allowed band is built, gently then influences the normal use of building, it is heavy then house crack inclination, roadbed settlement, dykes and dams is caused to collapse Deng.In order to understand sedimentation and sedimentation variation tendency of the ground under building load effect in time, to take in advance effectively Measure, prevents the generation of accident, and many engineerings require setting settlement observation.It, be into if engineering is built on soft soil foundation Settlement of foundation is eliminated in row ground preloading, settlement observation must be also carried out in reinforcing process, to analyze the reinforcing of ground in time Degree, it is determined whether reach design requirement and unloaded again.Some field tests, such as static load test pile, Loading Test of Composite Foundation Deng, it is also desirable to settlement observation result is obtained, could determine bearing capacity according to p-s curve.It can be accumulated experience money by settlement observation Material, inverse foundation deformation parameter provide foundation for engineering calculation from now on.
Many engineerings only require the sedimentation that certain is put more than earth's surface of observation ground surface settlement or building, these sedimentation systems Referred to as surface settlement.And in order to accurately grasp deformation characteristic and adjacent building of each soil layer of ground under upper load effect Influence of the load to each soil layer of ground, it is sometimes desirable to which soil body deep layer (layering) sedimentation is observed.Wherein, for deep punctuate into Row measurement needs to use sedimentometer, and deep punctuate level is drilled on a predetermined position using drilling machine, is placed in hole with small heavy The measuring staff for dropping disk is drawn ground with casing protection, is observed on the ground with level, the reachable ± 1.0mm of measurement accuracy.But Existing measuring staff end is in order to reduce the resistance in insertion soil layer, to be set as pyramidal structure, but because using pneumatic hammer or Measuring staff is driven into soil layer by other tools, then will lead to its adhesive force between soil layer inner wall and reduce, so that occurring centainly When the sedimentation of scale, measuring staff is not moved, then generates measurement error.
Utility model content
For above-mentioned in the prior art because measuring staff end is that pyramidal structure causes its retention effect poor to generate measurement The problem of error, the utility model, which provides one kind, to increase adhesive force by release plug pin after insertion to improve measurement accuracy Pawl nail type activity sedimentometer.
The technology employed by the present utility model is a kind of soil layer excavation face pawl nail type activity sedimentometer, including casing With sedimentation bar, the casing is driven into soil layer excavation face and by the sedimentation bar from casing interpolation underground layer and at the top of casing Sedimentation bar situation of movement is measured with measuring device and achievees the effect that monitoring sedimentation;Sedimentation bar insertion end, which is equipped with, inserts Head, the plug is interior to be equipped with the plug pin that can be pierced by plug, is equipped in sedimentation bar and connect with plug pin and plug pin is pushed to be pierced by or contract Enter the control-rod of plug.Wherein, the present apparatus is a kind of settlement monitoring device that excavation face is arranged in, and the sedimentation bar is one Longer rod-like structure is driven into soil layer and is moved together with soil layer, and is carried out by measuring device to its situation of movement Measurement.The measuring device includes levelling rod and total station, by calculating its moving distance and angle offset, using total station into Row measurement.It is worth noting that specific measurement method and step are the prior arts, and the utility model does not carry out it Any restriction, preferable fixed effect can be reached by only optimizing to original measuring staff and casing structure, therefore not right Its measurement method and step are described in detail.The plug pin is to be capable of forming pawl by more root cuttings nail in oblique cutting underground layer Pin structure, to improve fixed effect.Meanwhile it and can avoid influencing inserting guaranteeing that it is taken in plug when insertion settles bar Enter process.
Further, the sedimentation bar is hollow tubular structure, and the control-rod reciprocatingly slides in sedimentation bar along axis;Control Bar processed is hinged close to plug one end and at least one plug pin;Plug pin is corresponded on plug equipped with location hole, when control-rod rises The plug pin is just contacted with location hole inside bottom surface far from hinged one end end when to top.Here control-rod is limited Fixed, control-rod can be moved back and forth along axis, and the plug pin for being hinged on control boom end can be carried out with the sliding of control-rod Rotation.When control-rod is in apical position, plug pin submerges positioning hole completely, but connects with location hole inside bottom surface Touching.Because plug pin end is wedge structure, that is to say, that the side of plug pin is contacted with location hole inside bottom surface, once control-rod When moving downward, plug pin is then made it to dropping out outside location hole and rotating by a slanting thrust, so that oblique insertion is native In layer, control-rod provides downward thrust to plug pin at this time, and support of the location hole inside bottom surface to plug pin one obliquely Power makes the thrust deflecting of control-rod towards outside by positioning hole side surface.And when control-rod moves upwards, then dragging is inserted Follow closely it is oblique extract inwardly, location hole inside upper surface then gives plug pin one downward barrier force at this time, can submerge positioning Kong Zhong.
Further, it is equipped with blocker ring on the inside of the casing insertion end, the sedimentation bar is from being arranged on the inside of blocker ring Flexi-ring is passed into soil layer.In the prior art, it can be blocked using packing material, and certain buffering effect is provided. But it is easy to cause the movement of measuring staff certain resistance because filling excessive filler, and the cleaning of filled material is more numb It is tired, and be easy to cause secondary pollution to its base.And the blocking ring structure that the utility model uses can not only reduce volume and reach To preferable barriering effect, while the flexi-ring being equipped with by inside carries out certain limit and sealing effect to it.
Further, it is equipped at least one dovetail groove along axis on the casing inner wall, is equipped on blocker ring lateral wall With the raised line of dovetail groove cooperation clamping.
Further, the location hole inside bottom surface is equipped with roller bearing, and the plug pin is contacted with roller bearing reduces frictional force.
Further, the casing inner wall is equipped with telescopic band on sedimentation bar surface, will stretch equipped at least one hook Band is covered to be limited on corresponding hook.Hook figure telescopic band cooperation described here can provide certain branch to sedimentation bar Effect is supportted, avoids it excessive to deflect because of the gap between casing inner wall.It can be according to specific use demand to stretching Contracting band carries out type selecting, to provide more appropriate elastic force.
Further, the sedimentation bar, which is connected with to have mercy on separate plug one end inner wall, settles turning for rod axis rotation Handle, the turning handle are threadedly coupled with control-rod, and the turning handle is recessed inwardly to form card slot far from control-rod one end end face, the card Slot inner wall is internal spline or polygon prism type structure, is rotated by using drive turning handle in tool insertion card slot so that control-rod is along axis Line moves back and forth.Here the regulative mode of control-rod is defined because when in plug pin oblique cutting underground layer, resistance compared with Greatly, it if needing biggish thrust by linear pushing, while being also possible to because causing control-rod to generate using biggish thrust Deformation or damage.Therefore the turning handle structure by being equipped with controls control-rod or more in such a way that lever principle is connected through a screw thread Mobile, lifting principle is identical as flypress.Turning handle is being rotated by the tool with spline head or polygon forming head, wherein The polygon prism generally uses hexagon slot structure, but is not limited to hexagonal structure, and the effect of grafting transmission can be achieved.
Further, the sedimentation bar is being connected through a screw thread top cover far from one side end of plug.The cross of the top cover Section is T-type structure, and making sedimentation bar can be avoided the direct contact impact of pneumatic hammer by increase contact area causes to settle bar production Raw deformation.
Further, the control-rod is being equipped with tapered joint head close to plug one end, and the tapered joint head is equipped with Ear mount, the plug pin are hinged in ear mount.
The application method of the utility model: drilling in excavation face first, and carries out a borehole cleaning, is then inserted into casing Kong Zhong, then secondary pile hole cleaning is carried out, and the mud cleans of casing inner wall are clean, so that being kept in dovetail groove clean.By blocker ring It is inserted into casing, and is equipped with stopper in corresponding position and blocker ring is fixed on casing bottom surface.Sedimentation bar is penetrated from flexi-ring It in soil layer, and is driven into soil layer using pneumatic hammer, settles bar top at this time and be fixed with top cover, top is directly hammered using pneumatic hammer Bar.Telescopic band is covered on hook.Then it is fixed with tool by bar is settled, reuses tool rotation turning handle and make control-rod by institute There is plug pin to be pushed outwardly, when turning handle turns to bottommost, top cover is screwed in into sedimentation boom end and then tool is begun to use to supervise It surveys.It is worth noting that, wherein the stopper includes various ways, such as bolt-type or bolt, in remaining casing Wall is vertically fixedly connected, and is arranged in fixed position to prevent blocker ring from dropping out upwards.
The utility model has the following beneficial effects:
The utility model structure is simple, can quickly be positioned by the openable pawl pin structure being equipped with, to reach To preferable retention effect, to improve measurement accuracy.Meanwhile it and can be kept away guaranteeing that it is taken in plug when insertion settles bar Exempt to influence insertion process.The promotion plug pin movement that the liftable control-rod that is equipped with can be stable in sedimentation bar, and by setting Torque required for some turning handles are reduced using lever principle, while generation when can be avoided control-rod by biggish impact force Deformation.
Detailed description of the invention
Fig. 1 is that the axis two of the part-structure of the utility model surveys split type structure schematic diagram;
Fig. 2 is that the plug pin of the utility model drops out the schematic diagram of the section structure of location hole;
The schematic diagram of the section structure when Fig. 3 is in the utility model plug pin income plug.
In figure: 1- casing, 2- sedimentation bar, 3- plug, 4- plug pin, 5- control-rod, 6- location hole, 7- blocker ring, 8- flexi-ring, 9- dovetail groove, 10- raised line, 11- roller bearing, 12- hook, 13- telescopic band, 14- card slot, 15- top cover, 16- turning handle, 17- ear mount.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is further elaborated the utility model.
Embodiment 1:
As shown in Figure 1, a kind of soil layer excavation face pawl nail type activity sedimentometer of the present embodiment, including casing 1 and sedimentation bar 2, the casing 1 is driven into soil layer excavation face and uses from 1 interpolation underground layer of casing and at the top of casing 1 the sedimentation bar 2 Measuring device, which measures sedimentation 2 situation of movement of bar, achievees the effect that monitoring sedimentation;The sedimentation bar 2 is inserted into end equipped with slotting First 3, the plug 3 is interior to be equipped with the plug pin 4 that can be pierced by plug 3, is equipped in sedimentation bar 2 and connect with plug pin 4 and plug pin 4 is pushed to wear Out or the control-rod 5 of retraction plug 3.
Embodiment 2:
As shown in Figures 2 and 3, the present embodiment is improved on the basis of above-described embodiment 1, and the sedimentation bar 2 is Hollow tubular structure, the control-rod 5 reciprocatingly slide in sedimentation bar 2 along axis;Control-rod 5 is close to 3 one end of plug and at least One plug pin 4 is hinged;Plug pin 4 is corresponded on plug 3 equipped with location hole 6, the plug pin 4 is remote when control-rod 5 rises to top It is just contacted with 6 inside bottom surface of location hole from hinged one end end.Sedimentation bar 2 is passing through screw thread far from 3 one side end of plug It is connected with top cover 15.The cross section of the top cover 15 is T-type structure, by increasing contact area sedimentation bar 2 can be avoided The direct contact impact of pneumatic hammer causes to settle the generation deformation of bar 2.The control-rod 5 is being equipped with tapered joint head close to 3 one end of plug, The tapered joint head is equipped with ear mount 17, and the plug pin 4 is hinged in ear mount 17.
And blocker ring 7 is equipped on the inside of 1 insertion end of casing, the sedimentation bar 2 is worn from the flexi-ring 8 that 7 inside of blocker ring is arranged in It crosses and enters in soil layer.In the prior art, it can be blocked using packing material, and certain buffering effect is provided.But because It fills excessive filler to be easy to cause the movement of measuring staff certain resistance, and the cleaning of filled material is more troublesome, and It is easy to cause secondary pollution to its base.
Control-rod 5 can be moved back and forth along axis, and the plug pin 4 for being hinged on 5 end of control-rod can be with control-rod 5 Sliding is rotated.When control-rod 5 is in apical position, plug pin 4 is submerged completely in location hole 6, but in location hole 6 Side following table face contact.Because 4 end of plug pin is wedge structure, that is to say, that the side of plug pin 4 connects with 6 inside bottom surface of location hole Touching, when control-rod 5 moves downward, plug pin 4 is then made it to dropping out outside location hole 6 and turn by a slanting thrust It is dynamic, so that control-rod 5 provides downward thrust to plug pin 4 at this time, and 6 inside bottom surface of location hole is given in oblique insertion soil layer The support force of plug pin 4 one obliquely makes the thrust deflecting of control-rod 5 towards outside by 6 inner surface of location hole.And when control When bar 5 processed moves upwards, then drag that plug pin 4 is oblique to be extracted inwardly, at this time 6 inside upper surface of location hole then give plug pin 4 one to Under barrier force, can submerge in location hole 6.
Two dovetail grooves 9 are equipped with along axisymmetrical on 1 inner wall of casing, is equipped on 7 lateral wall of blocker ring and matches with dovetail groove 9 Close the raised line 10 of clamping.
6 inside bottom surface of location hole is equipped with roller bearing 11, and the plug pin 4 is contacted with roller bearing 11 reduces frictional force.The shield 1 inner wall of cylinder is equipped with multiple hooks 12, is divided into two layers, and every layer sets about central angles such as axis there are three hook 12, is in same On horizontal plane.During installation, first sedimentation bar 2 is inserted into soil layer, then reuses the pull rod of rod-like structure a kind of for telescopic band 13 trigger, as shown in Fig. 2, then pulling obliquely falls in it on hook 12, being rotated further by pull rod makes its telescopic band 13 and drag hook It is detached from and is socketed with hook 12.
It is equipped with telescopic band 13 on sedimentation 2 surface of bar, 13 sets of telescopic band are limited on corresponding hook 12.Here institute State 12 figure telescopic band 13 of hook cooperation can to sedimentation bar 2 certain support effect be provided, avoid its because with 1 inner wall of casing it Between gap it is excessive to deflecting.Type selecting can be carried out to telescopic band 13 according to specific use demand, to provide more Suitable elastic force.Sedimentation bar 2, which is connected with to have mercy on separate 3 one end inner wall of plug, settles the turning handle 16 of 2 axis of bar rotation, described Turning handle 16 is threadedly coupled with control-rod 5, and the turning handle 16 is recessed inwardly to form card slot 14 far from 5 one end end face of control-rod, described 14 inner wall of card slot is internal spline, by using the drive rotation of turning handle 16 in tool insertion card slot 14 so that control-rod 5 is past along axis Multiple movement.Here the regulative mode of control-rod 5 is defined, because resistance is larger when in 4 oblique cutting underground layer of plug pin, If needing biggish thrust by linear pushing, while being also possible to because causing control-rod 5 to generate shape using biggish thrust Become or damages.Therefore 16 structure of turning handle by being equipped with controls on control-rod 5 in such a way that lever principle is connected through a screw thread Lower movement, lifting principle are identical as flypress.Turning handle 16 is being rotated by the tool with spline head or polygon forming head, Wherein the polygon prism generally uses hexagon slot structure, but is not limited to hexagonal structure, and grafting transmission can be achieved Effect.
The application method of the present embodiment: drilling in excavation face first, and carries out a borehole cleaning, is then inserted into casing 1 Kong Zhong, then secondary pile hole cleaning is carried out, and the mud cleans of 1 inner wall of casing are clean, so that being kept in dovetail groove 9 clean.It will stop Ring 7 is inserted into casing 1, and is equipped with stopper in corresponding position and blocker ring 7 is fixed on 1 bottom surface of casing.Will sedimentation bar 2 from soft Ring 8 penetrates in soil layer, and is driven into soil layer using pneumatic hammer, settles 2 top of bar at this time and is fixed with top cover 15, straight using pneumatic hammer Connect hammering mandril.By 13 sets of telescopic band on hook 12.Then bar 2 will be settled with tool to fix, reuse tool rotation turning handle 16 are pushed outwardly control-rod 5 by all plug pins 4, and when turning handle 16 turns to bottommost, top cover 15 is screwed in sedimentation 2 end of bar Portion then begins to use tool to be monitored.It is worth noting that, wherein the stopper includes various ways, such as bolt Formula or bolt, remaining 1 inner wall of casing are vertically fixedly connected, and are arranged in fixed position to prevent blocker ring 7 from dropping out upwards.
Embodiment 3:
The present embodiment is that restriction is optimized on the basis of above-described embodiment 1, and the control-rod 5 is equipped with convex block, It settles 2 inner wall of bar and is equipped with sliding slot, be engaged by clamping and slided by convex block and sliding slot, control-rod 5 is limited in sedimentation bar 2 Position sliding.The control-rod 5 is pierced by sedimentation bar 2 far from 3 one end of plug, is pierced by end at it and is equipped with ball bowl.It is separate in sedimentation bar 2 It is hinged with bull stick on 3 one end outer wall of plug, compression bar is hinged on the bull stick, the compression bar end is equipped with ball pin, the ball pin It is inserted into ball bowl.By rotate bull stick make compression bar pull or push lever 5 sedimentation bar 2 in move, thus reach by All plug pins 4 are released or the function of income.
The utility model is not limited to above-mentioned optional embodiment, anyone can obtain under the enlightenment of the utility model Other various forms of products, however, making any variation in its shape or structure, all the utility model rights that falls into are wanted The technical solution in confining spectrum is sought, is all fallen within the protection scope of the utility model.

Claims (9)

1. a kind of soil layer excavation face pawl nail type activity sedimentometer, including casing (1) and sedimentation bar (2), the casing (1) is driven into In soil layer excavation face and by the sedimentation bar (2) from casing (1) interpolation underground layer and at the top of casing (1) with measuring device to sinking Drop bar (2) situation of movement, which measures, achievees the effect that monitoring sedimentation;It is characterized by: sedimentation bar (2) insertion end is set Have plug (3), the plug pin (4) that can be pierced by plug (3) is equipped in the plug (3), is equipped with and plug pin (4) in sedimentation bar (2) It connects and plug pin (4) is pushed to be pierced by or the control-rod (5) of retraction plug (3).
2. a kind of soil layer excavation face pawl nail type activity sedimentometer according to claim 1, it is characterised in that: the sedimentation bar It (2) is hollow tubular structure, the control-rod (5) reciprocatingly slides in sedimentation bar (2) along axis;Control-rod (5) is close to plug (3) one end and at least one plug pin (4) are hinged;Plug pin (4) are corresponded on plug (3) equipped with location hole (6), when control-rod (5) The plug pin (4) just contacts with location hole (6) inside bottom surface far from hinged one end end when rising to top.
3. a kind of soil layer excavation face pawl nail type activity sedimentometer according to claim 1 or 2, it is characterised in that: the shield Blocker ring (7) are equipped on the inside of cylinder (1) insertion end, sedimentation bar (2) passes through from the flexi-ring (8) being arranged on the inside of blocker ring (7) Into in soil layer.
4. a kind of soil layer excavation face pawl nail type activity sedimentometer according to claim 3, it is characterised in that: the casing (1) at least one dovetail groove (9) are equipped with along axis on inner wall, are equipped with to cooperate with dovetail groove (9) on blocker ring (7) lateral wall and block The raised line (10) connect.
5. a kind of soil layer excavation face pawl nail type activity sedimentometer according to claim 2, it is characterised in that: the location hole (6) inside bottom surface is equipped with roller bearing (11), and the plug pin (4) contacts with roller bearing (11) reduces frictional force.
6. a kind of soil layer excavation face pawl nail type activity sedimentometer according to claim 1 or 2, it is characterised in that: the shield Cylinder (1) inner wall is equipped at least one hook (12), is equipped with telescopic band (13) on sedimentation bar (2) surface, telescopic band (13) are covered It is limited on corresponding hook (12).
7. a kind of soil layer excavation face pawl nail type activity sedimentometer according to claim 1 or 2, it is characterised in that: described heavy Drop bar (2), which is connected with to have mercy on separate plug (3) one end inner wall, settles the turning handle (16) of bar (2) axis rotation, the turning handle (16) it is threadedly coupled with control-rod (5), the turning handle (16) is recessed inwardly to form card slot far from control-rod (5) one end end face (14), card slot (14) inner wall is internal spline or polygon prism type structure, by using band turn in tool insertion card slot (14) Handle (16) rotates so that control-rod (5) is moved back and forth along axis.
8. a kind of soil layer excavation face pawl nail type activity sedimentometer according to claim 1 or 2, it is characterised in that: described heavy Drop bar (2) is being connected through a screw thread top cover (15) far from (3) one side end of plug.
9. a kind of soil layer excavation face pawl nail type activity sedimentometer according to claim 7, it is characterised in that: the control-rod (5) it is being equipped with tapered joint head close to plug (3) one end, the tapered joint head is equipped with ear mount (17), plug pin (4) hinge It connects on ear mount (17).
CN201820893358.5U 2018-06-08 2018-06-08 A kind of soil layer excavation face pawl nail type activity sedimentometer Expired - Fee Related CN208309659U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112595299A (en) * 2020-12-10 2021-04-02 瑞昌市正元核地信息产业有限公司 Easily-installed measuring nail for monitoring
CN113432579A (en) * 2021-06-09 2021-09-24 中国建筑第七工程局有限公司 Device for monitoring foundation pit settlement and using method
CN114000489A (en) * 2021-11-16 2022-02-01 中建鸿腾建设集团有限公司 Device and method for monitoring ground settlement value after pressure reduction and precipitation
CN115248027A (en) * 2021-04-28 2022-10-28 深圳大学 Soil settlement optical fiber sensing monitoring device and settlement measuring method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112595299A (en) * 2020-12-10 2021-04-02 瑞昌市正元核地信息产业有限公司 Easily-installed measuring nail for monitoring
CN112595299B (en) * 2020-12-10 2022-09-02 杭州谱尼检测科技有限公司 Easily-installed measuring nail for monitoring
CN115248027A (en) * 2021-04-28 2022-10-28 深圳大学 Soil settlement optical fiber sensing monitoring device and settlement measuring method
CN115248027B (en) * 2021-04-28 2023-07-21 深圳大学 Optical fiber sensing monitoring device for soil settlement and settlement measuring method
CN113432579A (en) * 2021-06-09 2021-09-24 中国建筑第七工程局有限公司 Device for monitoring foundation pit settlement and using method
CN114000489A (en) * 2021-11-16 2022-02-01 中建鸿腾建设集团有限公司 Device and method for monitoring ground settlement value after pressure reduction and precipitation

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