CN114108709A - Method for monitoring erosion of arsenic sandstone slope - Google Patents
Method for monitoring erosion of arsenic sandstone slope Download PDFInfo
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- CN114108709A CN114108709A CN202111187822.1A CN202111187822A CN114108709A CN 114108709 A CN114108709 A CN 114108709A CN 202111187822 A CN202111187822 A CN 202111187822A CN 114108709 A CN114108709 A CN 114108709A
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- anchor rod
- slope
- erosion
- sandstone
- arsenic
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention discloses a method for monitoring erosion of a sandstone side slope, which is based on a set of sandstone side slope erosion monitoring device, and the device comprises: the system comprises an FBG sensor, a first anchor rod, a second anchor rod and a baffle, wherein the baffle connected with the second anchor rod collects eroded crushed rocks to drive the second anchor rod to generate displacement change, and the FBG sensor monitors the displacement change; the demodulation analysis module receives the optical parameter change signal of the FBG sensor; the remote transmission module is used for remotely transmitting the signal data of the demodulation module to the computer; the computer displays and processes the signal value in real time and gives out early warning judgment. The monitoring method can automatically monitor the erosion change of the sandstone side slope in real time, and has the advantages of high reliability, high testing precision, good stability and the like.
Description
Technical Field
The invention relates to the field of side slope erosion monitoring, in particular to a method for monitoring side slope erosion of arsenic sandstone.
Background
The sandstone is a loose rock stratum, in particular to a rock interbedded layer consisting of thick-layer sandstone, sand shale and argillaceous sandstone in the ancient epoch (about 2.5 hundred million years) and the middle epoch, Jurassic epoch and chalky epoch, is mainly distributed in the region bordering on Shanxi Mongolia in the yellow river basin, and has the characteristics of forming mud when meeting water and forming sand when meeting wind. Based on the characteristics, the arsenic sandstone is very easy to be corroded, and serious water and soil loss is caused. According to statistics, the soil erosion modulus of arsenic sandstone areas is about 3-4 ten thousand t/(km · a), wherein the average amount of silt entering the yellow river is about 2 hundred million t for many years, and the coarse silt deposited in river channels downstream of the yellow river is about 1 hundred million t, which accounts for 25% of the average amount of silt deposited in the downstream of the yellow river per year.
At present, the method for monitoring the erosion amount of the side slope of the sandstone is single, manual measurement is mostly used, the monitoring continuity is poor, and all-weather measurement cannot be achieved.
Disclosure of Invention
Aiming at the technical problem of the erosion monitoring of the sandstone side slope, the invention provides the erosion monitoring method of the sandstone side slope, which can realize the real-time online monitoring function, can realize the real-time automatic online monitoring function, reduce the dependence of manual monitoring and improve the monitoring precision.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a method for monitoring erosion of a sandstone side slope is based on a set of sandstone side slope erosion monitoring device, and the device comprises: the first anchor rod is perpendicular to the slope surface of the sandstone side slope and inserted into the sandstone side slope, and the upper end of the first anchor rod is provided with a first overhanging section overhanging to the sandstone side slope;
the second anchor rod is perpendicular to the slope surface of the arsenic sand slope, inserted on the arsenic sand slope and positioned at the downstream of the first anchor rod, and the upper end of the second anchor rod is provided with a second external extension section extending outwards from the arsenic sand slope;
the telescopic sleeve is connected between the first anchor rod and the second anchor rod, one end of the telescopic sleeve is connected with the first extending section through a first connecting piece, and the other end of the telescopic sleeve is connected with the second extending section through a second connecting piece;
the FBG sensor is arranged in the telescopic sleeve, one end of the FBG sensor is arranged on the first connecting piece, and the other end of the FBG sensor is arranged on the second connecting piece;
the displacement detection equipment is in signal connection with the FBG sensor through a communication optical fiber;
the baffle is connected to the second extending section at the top end of the second anchor rod and used for collecting eroded rocks sliding down the slope surface of the arsenic sandstone slope;
a baffle plate positioned at the upper end of a second anchor rod at the downstream of the first anchor rod collects the eroded and slipped crushed rock in a certain range, the second anchor rod generates displacement under the action of the gravity of the crushed rock, and the FBG sensor monitors the displacement change of the second anchor rod, so that the erosion amount of the side slope is obtained; the demodulation analysis module reads the change signal and transmits the change signal to the computer, and the computer displays and stores the change signal data in real time, judges according to the set early warning value and gives a warning in time.
Preferably, the first anchor rod and the second anchor rod are identical in structure and respectively comprise an anchor rod body and a pointed head arranged at the bottom of the anchor rod body.
Preferably, the telescopic sleeve comprises an outer pipe and an inner pipe which are sleeved with each other, the inner pipe is arranged in the outer pipe, and the two pipes can slide relatively to each other to stretch.
Preferably, the displacement detection device comprises a demodulation and analysis module, a remote transmission module and a computer, and the displacement signal detected by the FBG sensor is sent to the computer through the demodulation and analysis module and the remote transmission module in sequence.
Preferably, the device further comprises a power supply module for supplying power to the demodulation and analysis module and the remote transmission module.
Preferably, the power supply module is a photovoltaic power supply module.
In conclusion, the method for monitoring the erosion of the arsenic sandstone slope has the following effects:
1. the method has the advantages that the FBG sensors are arranged, and the erosion monitoring of the sandstone side slope is carried out by observing the change condition of the optical parameters (wavelength, phase and the like) of the FBG sensors caused by the movement of the lower anchor rod, so that the erosion of the sandstone side slope can be automatically monitored in real time, and the monitoring efficiency and safety are improved;
2. the on-site demodulation analysis module is connected with the wireless transmission module, can be used for on-site monitoring configuration on a human-computer interaction interface through a computer, displays and stores data in real time, is beneficial to workers to finish monitoring work in different places, and improves the working efficiency.
Drawings
FIG. 1 is a functional block diagram of an apparatus for monitoring erosion of a sandstone slope according to the present invention;
FIG. 2 is a schematic structural diagram of a sandstone slope erosion monitoring device according to the present invention;
fig. 3 is a layout diagram of the arsenic sandstone slope erosion monitoring device of the invention.
In the figure: 1. the system comprises an FBG sensor, 2, a demodulation analysis module, 3, a photovoltaic module, 4, a remote transmission module, 5, a computer, 6 and an alternating current power supply; 11-1, a first anchor rod, 11-2, a second anchor rod, 12, a telescopic sleeve, 13, a communication optical fiber, 14-1, a first connecting piece, 14-2, a second connecting piece, 15, a pointed cone, 16 and a baffle plate.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the following describes the technical solutions in the embodiments of the present invention clearly and completely with reference to the drawings in the embodiments of the present invention:
a method for monitoring erosion of a arsenopyrite side slope is based on a set of device for monitoring erosion of the arsenopyrite side slope, and comprises a first anchor rod 11-1, wherein the first anchor rod is inserted into the arsenopyrite side slope and is vertical to the slope surface of the arsenopyrite side slope, and the upper end of the first anchor rod 11-1 is provided with a first overhanging section overhanging the arsenopyrite side slope;
the second anchor rod 11-2 is perpendicular to the slope surface of the arsenic sand slope, inserted on the arsenic sand slope and positioned at the downstream of the first anchor rod 11-1, and the upper end of the second anchor rod 11-2 is provided with a second external extension section extending out of the arsenic sand slope;
the telescopic sleeve 12 is connected between the first anchor rod and the second anchor rod, one end of the telescopic sleeve 12 is connected with the first extending section through a first connecting piece 14-1, and the other end of the telescopic sleeve is connected with the second extending section through a second connecting piece 14-2;
the FBG sensor 1 is arranged in the telescopic sleeve, one end of the FBG sensor 1 is arranged on the first connecting piece 14-1, and the other end of the FBG sensor 1 is arranged on the second connecting piece 14-2;
the displacement detection equipment is in signal connection with the FBG sensor through a communication optical fiber;
the baffle 16 is connected to the second extending section at the top end of the second anchor rod and used for collecting eroded rocks sliding down the slope surface of the arsenic sandstone slope;
a baffle plate positioned at the upper end of a second anchor rod at the downstream of the first anchor rod collects the eroded and slipped crushed rock in a certain range, the second anchor rod generates displacement under the action of the gravity of the crushed rock, and the FBG sensor monitors the displacement change of the second anchor rod, so that the erosion amount of the side slope is obtained; the demodulation analysis module reads the change signal and transmits the change signal to the computer, and the computer displays and stores the change signal data in real time, judges according to the set early warning value and gives a warning in time.
Preferably, the photovoltaic module 3 provides a direct current 24V power supply for the demodulation and analysis module 2 and the remote transmission module 4; the alternating current power supply 6 provides power for the computer 5;
preferably, the first anchor rod and the second anchor rod have the same structure and are formed by welding a phi 14 steel bar and a angle steel of 50 x 5, a connecting piece 15 and a baffle 16 are arranged at one end, the end part of the other end is in a taper shape, and the tip of a taper 16 faces outwards, so that the anchor rod is conveniently implanted into a rock body and kept stable, the FBG sensor 1 and the telescopic sleeve 12 are conveniently fixed, and eroded crushed rock can be collected;
preferably, the telescopic tube 12 is a piston type pipeline formed by 2 PVC pipes with diameters of 24 and 20, and the two ends of the pipeline are fixed at the connecting pieces 15 at the upper ends of the 2 anchor rods 11 through grooves, so as to protect the FBG sensor 1 and avoid affecting the monitoring effect.
The invention relates to a construction method of a arsenic sandstone side slope erosion monitoring device, which is characterized in that the arsenic sandstone side slope erosion monitoring devices are arranged on a monitored arsenic sandstone side slope object at certain intervals along the length direction of the arsenic sandstone side slope, and the arrangement flow of each arsenic sandstone side slope erosion monitoring device comprises the following steps:
s1: inserting a first anchor rod and a second anchor rod, wherein the implantation direction of the anchor rods is vertical to the direction of the slope surface;
s2: fixing slots at two ends of the telescopic sleeve at the connecting pieces at the upper ends of the 2 anchor rods;
s3: connecting the FBG sensor with the communication optical fiber, penetrating the FBG sensor into the telescopic sleeve, and fixing the FBG sensor at the connecting piece at the upper ends of the 2 anchor rods by using AB glue;
s4: connecting the communication optical fiber with a demodulation analysis module, and transmitting an optical signal to the demodulation analysis module to be converted into an electric signal;
s5: and the electric signal data of the demodulation and analysis module is transmitted to a computer through a wireless transmission module for real-time display and processing.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and all technical solutions that fall under the spirit of the present invention fall within the scope of the present invention. Any person skilled in the art should be able to substitute or change the technical solution of the present invention and its inventive concept within the technical scope of the present invention.
Claims (6)
1. A method for monitoring erosion of a sandstone side slope is characterized in that based on a set of sandstone side slope erosion monitoring device, the device comprises: the first anchor rod is perpendicular to the slope surface of the sandstone side slope and inserted into the sandstone side slope, and the upper end of the first anchor rod is provided with a first overhanging section overhanging to the sandstone side slope;
the second anchor rod is perpendicular to the slope surface of the arsenic sand slope, inserted on the arsenic sand slope and positioned at the downstream of the first anchor rod, and the upper end of the second anchor rod is provided with a second external extension section extending outwards from the arsenic sand slope;
the telescopic sleeve is connected between the first anchor rod and the second anchor rod, one end of the telescopic sleeve is connected with the first extending section through a first connecting piece, and the other end of the telescopic sleeve is connected with the second extending section through a second connecting piece;
the FBG sensor is arranged in the telescopic sleeve, one end of the FBG sensor is arranged on the first connecting piece, and the other end of the FBG sensor is arranged on the second connecting piece;
the displacement detection equipment is in signal connection with the FBG sensor through a communication optical fiber;
the baffle is connected to the second extending section at the top end of the second anchor rod and used for collecting eroded rocks sliding down the slope surface of the arsenic sandstone slope;
a baffle plate positioned at the upper end of a second anchor rod at the downstream of the first anchor rod collects the eroded and slipped crushed rock in a certain range, the second anchor rod generates displacement under the action of the gravity of the crushed rock, and the FBG sensor monitors the displacement change of the second anchor rod, so that the erosion amount of the side slope is obtained; the demodulation analysis module reads the change signal and transmits the change signal to the computer, and the computer displays and stores the change signal data in real time, judges according to the set early warning value and gives a warning in time.
2. The method for monitoring erosion of arsenic sandstone side slopes of claim 1, wherein the method comprises the following steps: the first anchor rod and the second anchor rod are the same in structure and respectively comprise an anchor rod body and a sharp head part arranged at the bottom of the anchor rod body.
3. The method for monitoring erosion of arsenic sandstone side slopes of claim 1, wherein the method comprises the following steps: the telescopic tube comprises an outer tube and an inner tube which are mutually sleeved, the inner tube is arranged in the outer tube, and the two tubes can slide relatively to realize stretching.
4. The method for monitoring erosion of arsenic sandstone side slopes of claim 1, wherein the method comprises the following steps: the displacement detection equipment comprises a demodulation analysis module, a remote transmission module and a computer, wherein the displacement signals detected by the FBG sensor are sequentially sent to the computer through the demodulation analysis module and the remote transmission module.
5. The method for monitoring erosion of arsenic sandstone side slopes of claim 1, wherein the method comprises the following steps: the device also comprises a power supply module which is used for supplying power to the demodulation analysis module and the remote transmission module.
6. The method for monitoring erosion of arsenic sandstone side slopes of claim 5, wherein the method comprises the following steps: the power supply module is a photovoltaic power supply module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111187822.1A CN114108709B (en) | 2021-10-12 | 2021-10-12 | Method for monitoring erosion of sandstone slope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111187822.1A CN114108709B (en) | 2021-10-12 | 2021-10-12 | Method for monitoring erosion of sandstone slope |
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| CN114108709A true CN114108709A (en) | 2022-03-01 |
| CN114108709B CN114108709B (en) | 2023-08-22 |
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| CN202111187822.1A Active CN114108709B (en) | 2021-10-12 | 2021-10-12 | Method for monitoring erosion of sandstone slope |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111105600A (en) * | 2019-12-30 | 2020-05-05 | 中国公路工程咨询集团有限公司 | Cutting slope stability dynamic monitoring and early warning system and method based on rainfall condition |
| CN210482097U (en) * | 2019-05-30 | 2020-05-08 | 中铁二院工程集团有限责任公司 | High cantilever rockfall protective structure |
| CN111721227A (en) * | 2020-07-13 | 2020-09-29 | 大连大学 | Side slope anchor rod monitoring and early warning system based on LabVIEW and FBG strain sensor |
| CN212270977U (en) * | 2020-09-24 | 2021-01-01 | 招商局重庆交通科研设计院有限公司 | Active and passive net combined flexible protection device |
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2021
- 2021-10-12 CN CN202111187822.1A patent/CN114108709B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210482097U (en) * | 2019-05-30 | 2020-05-08 | 中铁二院工程集团有限责任公司 | High cantilever rockfall protective structure |
| CN111105600A (en) * | 2019-12-30 | 2020-05-05 | 中国公路工程咨询集团有限公司 | Cutting slope stability dynamic monitoring and early warning system and method based on rainfall condition |
| CN111721227A (en) * | 2020-07-13 | 2020-09-29 | 大连大学 | Side slope anchor rod monitoring and early warning system based on LabVIEW and FBG strain sensor |
| CN212270977U (en) * | 2020-09-24 | 2021-01-01 | 招商局重庆交通科研设计院有限公司 | Active and passive net combined flexible protection device |
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| CN114108709B (en) | 2023-08-22 |
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