CN114108709B - Method for monitoring erosion of sandstone slope - Google Patents
Method for monitoring erosion of sandstone slope Download PDFInfo
- Publication number
- CN114108709B CN114108709B CN202111187822.1A CN202111187822A CN114108709B CN 114108709 B CN114108709 B CN 114108709B CN 202111187822 A CN202111187822 A CN 202111187822A CN 114108709 B CN114108709 B CN 114108709B
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- anchor rod
- slope
- erosion
- sandstone
- monitoring
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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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- Engineering & Computer Science (AREA)
- 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 slope, which is based on a set of device for monitoring erosion of the sandstone slope, and the device comprises the following steps: the FBG sensor, the first anchor rod, the second anchor rod and the baffle, wherein the baffle connected with the second anchor rod collects eroded broken rock and drives 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; and displaying and processing the signal value in real time by the computer, and giving out early warning judgment. The monitoring method can automatically monitor the erosion change of the arsenicum 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 erosion monitoring of slopes, in particular to a method for monitoring erosion of a sandstone slope.
Background
The arsenic sandstone is a loose rock stratum, particularly a rock interbedded layer consisting of thick sandstone, sand shale and argillaceous sandstone of ancient and middle-life triamcinolone (about 2.5 hundred million years), dwarfism and chalky, and is mainly distributed in a Jinshan Mongolian bordering area of a yellow river basin, and has the characteristics of mud formation when meeting water and sand formation when meeting wind. Based on the characteristics, the sandstone is extremely easy to erode, and serious water and soil loss phenomenon is caused. The soil erosion modulus in the sandstone area is about 3-4 ten thousand t/(km.a), wherein the average sediment amount entering the yellow river is about 2 hundred million t for many years, the coarse sediment deposited on the river channel at the downstream of the yellow river is about 1 hundred million t, and the sediment amount of the coarse sediment deposited on the river channel at the downstream of the yellow river is 25% of the average annual sediment amount.
At present, the method for monitoring the erosion amount of the side slope of the sandstone is single, the monitoring is carried out by manpower, the monitoring continuity is poor, and all-weather measurement cannot be achieved.
Disclosure of Invention
Aiming at the technical problem of the monitoring of the erosion of the arsenic sandstone slope, the invention provides a monitoring method for the erosion of the arsenic sandstone slope, which can realize the real-time automatic on-line 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 slope is based on a set of device for monitoring erosion of the sandstone slope, and the device comprises the following steps: the first anchor rod is inserted into the arsenic sandstone slope surface perpendicular to the arsenic sandstone slope surface, and the upper end of the first anchor rod is provided with a first extending section extending outwards from the arsenic sandstone slope surface;
the second anchor rod is perpendicular to the slope surface of the arsenic sandstone slope, is inserted on the arsenic sandstone slope and is positioned at the downstream of the first anchor rod, and the upper end of the second anchor rod is provided with a second extending section which extends outwards from the arsenic sandstone 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 outer extension section through a first connecting piece, and the other end of the telescopic sleeve is connected with the second outer extension 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 plate is connected to the second extending section at the top end of the second anchor rod and is used for collecting erosion broken rock sliding on the slope surface of the arsenic sand slope;
the baffle plate at the upper end of the second anchor rod positioned at the downstream of the first anchor rod is used for collecting broken rock which erodes and falls in a certain range, the second anchor rod is displaced due to the gravity action of the broken rock, and the FBG sensor is used for monitoring 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 warning in time.
Preferably, the first anchor rod and the second anchor rod have the same structure and comprise an anchor rod body and a pointed part 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 relatively slide to realize telescopic operation.
Preferably, the displacement detection device comprises a demodulation analysis module, a remote transmission module and a computer, and the displacement signals detected by the FBG sensor are sequentially sent to the computer through the demodulation analysis module and the remote transmission module.
Preferably, the system further comprises a power supply module for supplying power to the demodulation analysis module and the remote transmission module.
Preferably, the power supply module is a photovoltaic power supply module.
In summary, the method for monitoring the erosion of the sandstone slope has the following effects:
1. the FBG sensor is arranged, and the erosion monitoring of the arsenicum slope is carried out by observing the change condition of the optical parameters (wavelength, phase and the like) of the FBG sensor caused by the movement of the lower anchor rod;
2. the field demodulation analysis module is connected with the wireless transmission module, can carry out field 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 working efficiency.
Drawings
FIG. 1 is a functional block diagram of a arsenic sandstone slope erosion monitoring device according to the present invention;
FIG. 2 is a schematic structural view of a device for monitoring erosion of a side slope of sandstone according to the present invention;
FIG. 3 is a diagram showing the arrangement of the erosion monitoring device for a sandstone slope according to the present invention.
In the figure: 1. the system comprises an FBG sensor, a demodulation analysis module, a photovoltaic module, a remote transmission module, a computer, an alternating current power supply and a remote transmission module, wherein the FBG sensor, the demodulation analysis module, the photovoltaic module, the remote transmission module, the computer and the alternating current power supply are arranged in sequence; 11-1, a first anchor rod, 11-2, a second anchor rod, 12, a telescopic tube, 13, communication optical fibers, 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 scheme and advantages of the present invention more clear, the technical scheme in the embodiment of the present invention is clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention:
the method for monitoring the erosion of the arsenic and sandstone side slope is based on a set of arsenic and sandstone side slope erosion monitoring device and comprises a first anchor rod 11-1, wherein the first anchor rod 11-1 is perpendicular to the slope surface of the arsenic and sandstone side slope and is inserted into the arsenic and sandstone side slope, and the upper end of the first anchor rod 11-1 is provided with a first overhanging section overhanging the arsenic and sandstone side slope;
the second anchor rod 11-2 is inserted on the arsenicum slope perpendicular to the arsenicum slope surface 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 outward extending section which extends out of the arsenicum slope surface;
a telescopic tube 12 connected between the first anchor rod and the second anchor rod, wherein one end of the telescopic tube 12 is connected with the first extension section through a first connecting piece 14-1, and the other end of the telescopic tube is connected with the second extension section through a second connecting piece 14-2;
the FBG sensor 1 is arranged in the telescopic tube, 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 plate 16 is connected to the second extending section at the top end of the second anchor rod and is used for collecting erosion broken rock sliding on the slope surface of the arsenic sand side slope;
the baffle plate at the upper end of the second anchor rod positioned at the downstream of the first anchor rod is used for collecting broken rock which erodes and falls in a certain range, the second anchor rod is displaced due to the gravity action of the broken rock, and the FBG sensor is used for monitoring 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 warning in time.
Preferably, the photovoltaic module 3 provides a direct current 24V power supply for the demodulation 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 50 multiplied by 5 angle steel, one end of the second anchor rod is provided with a second connecting piece and a baffle, the end part of the other end is in a pointed cone shape, the pointed end of the pointed cone 15 faces outwards, so that the anchor rod is conveniently implanted into a rock mass and kept stable, the FBG sensor 1 and the telescopic sleeve 12 are conveniently fixed, and erosion broken rock can be collected;
preferably, the telescopic tube 12 is a piston type pipeline formed by 2 PVC tube groups with diameters of 24 and 20 respectively, and two ends of the pipeline are fixed at the connecting piece of the upper ends of the 2 anchor rods in a slotted mode, so that the FBG sensor 1 is protected, and the monitoring effect is prevented from being influenced.
The invention relates to a construction method of a arsenic sandstone slope erosion monitoring device, which comprises the following steps of:
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;
s2: the two ends of the telescopic sleeve are slotted and fixed at the connecting pieces at the upper ends of the 2 anchor rods;
s3: the FBG sensor is connected with the communication optical fiber and penetrates into the telescopic sleeve, and the FBG sensor is fixed at the connecting piece of the upper ends of the 2 anchor rods by adopting AB glue;
s4: connecting the communication optical fiber with the demodulation analysis module, and transmitting an optical signal to the demodulation analysis module to be converted into an electric signal;
s5: and transmitting the signal data of the demodulation analysis module to a computer through the wireless transmission module for real-time display and processing.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and all technical solutions belonging to the concept of the present invention are within the scope of the present invention. Any person skilled in the art should, within the scope of the present disclosure, cover all equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof.
Claims (4)
1. The method for monitoring the erosion of the sandstone slope is characterized by comprising the following steps of: the first anchor rod is inserted into the arsenic sandstone slope surface perpendicular to the arsenic sandstone slope surface, and the upper end of the first anchor rod is provided with a first extending section extending outwards from the arsenic sandstone slope surface;
the second anchor rod is perpendicular to the slope surface of the arsenic sandstone slope, is inserted on the arsenic sandstone slope and is positioned at the downstream of the first anchor rod, and the upper end of the second anchor rod is provided with a second extending section which extends outwards from the arsenic sandstone 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 outer extension section through a first connecting piece, and the other end of the telescopic sleeve is connected with the second outer extension 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 plate is connected to the second extending section at the top end of the second anchor rod and is used for collecting erosion broken rock sliding on the slope surface of the arsenic sand slope;
the baffle plate at the upper end of the second anchor rod positioned at the downstream of the first anchor rod is used for collecting broken rock which erodes and falls in a certain range, the second anchor rod is displaced due to the gravity action of the broken rock, and the FBG sensor is used for monitoring 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 warning in time;
arranging a arsenic-sandstone slope erosion monitoring device on an object for monitoring the arsenic-sandstone slope at intervals along the length direction of the arsenic-sandstone slope;
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 transmitted to the computer through the demodulation analysis module and the remote transmission module;
the system also comprises a power supply module for supplying power to the demodulation analysis module and the remote transmission module.
2. The method for monitoring the erosion of a sandstone slope according to claim 1, wherein: the first anchor rod and the second anchor rod comprise an anchor rod body and pointed parts arranged at the bottom of the anchor rod body.
3. The method for monitoring the erosion of a sandstone slope according to claim 1, wherein: 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 realize telescopic operation.
4. The method for monitoring the erosion of a sandstone slope according to claim 1, wherein: 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN114108709A CN114108709A (en) | 2022-03-01 |
| CN114108709B true CN114108709B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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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 |
-
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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| CN114108709A (en) | 2022-03-01 |
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