LU501342B1 - Self-adaptive Inclinometer for Measuring Large Deep-seated Ground Deformation of Landslide - Google Patents

Self-adaptive Inclinometer for Measuring Large Deep-seated Ground Deformation of Landslide Download PDF

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Publication number
LU501342B1
LU501342B1 LU501342A LU501342A LU501342B1 LU 501342 B1 LU501342 B1 LU 501342B1 LU 501342 A LU501342 A LU 501342A LU 501342 A LU501342 A LU 501342A LU 501342 B1 LU501342 B1 LU 501342B1
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measuring tube
spatial
spiral
spiral measuring
landslide
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LU501342A
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German (de)
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Junwei Ma
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Univ China Geosciences Wuhan
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C7/00—Tracing profiles
    • G01C7/02—Tracing profiles of land surfaces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Multimedia (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)

Abstract

A self-adaptive inclinometer for measuring large deep-seated ground deformation of landslide. Spatial locators are installed in the spiral measuring tube, the spiral measuring tube is inserted into bedrock surface from a landslide body. The spiral measuring tube includes many integrally-formed pipe rings, adjacent pipe rings are tightened in the initial state, when the landslide body take place, the gap between the adjacent pipe rings becomes larger to stretch the length of the spiral measuring tube, spatial locators change positions according to the change of the length of the spiral measuring tube, and output spectral characteristics; spatial locators send the output spectral characteristics to the detection module through ultrasonic signals, the detection module receives ultrasonic signals of the spatial locators, and obtains the spatial coordinates of the spatial locators by analysing the ultrasonic signals. In addition, the invention also includes a self-adaptive monitoring method for large deep-seated ground deformation of landslide.

Description

DESCRIPTION 507942 Self-adaptive Inclinometer for Measuring Large Deep-seated Ground Deformation of Landslide
TECHNICAL FIELD The invention belongs to the field of landslide monitoring, and particularly relates to a self-adaptive inclinometer for measuring large deep-seated ground deformation of landslide.
BACKGROUND Landslides, as serious geological disasters in the global scope, are becoming more and more frequent with the increasing frequency of human engineering activities, causing more and more losses. In order to effectively prevent and control landslides, scholars and engineers at home and abroad have done a lot of experimental research on landslides and tried to predict them. The landslides deformation monitoring is not only an important basis for realizing the long-term and imminent landslides prediction, but also an important content and means of landslide monitoring.
At present, the landslides deformation monitoring methods are mainly surface GPS, TDR technology, embedded optical fiber and inclinometer. However, GPS may only measure the deformation of single point on the surface, but cannot measure local deformation below the ground; TDR technology, embedded optical fiber and other emerging material technologies have low measurement accuracy and reliability, and are easy to be cut off, inclinometer is widely accepted among the existing measurement methods and may truly measure the landslide deformation, but this measurement method is time-consuming and energy-consuming, as well as causes large random errors of measurement results due to different operators’ operation differences, and even can't measure data due to the large deformation of the inclinometer, so as to cannot monitor large deformation of landslides. Moreover, with the occurrence of large deformation of landslides, many detection systems are destroyed, thus losing their functions.
SUMMARY
In view of this, the embodiment of the present invention provides a self-adaptive 507942 inclinometer for measuring large deep-seated ground deformation of landslide, which is stable in system and can still be used normally in large deformation state.
The embodiment of the present invention provides a self-adaptive inclinometer for measuring large deep-seated ground deformation of landslide, which includes a spiral measuring tube, many spatial locators and a detection module, wherein many spatial locators are installed in the spiral measuring tube, and the spiral measuring tube is inserted into bedrock surface from a landslide body. The spiral measuring tube includes many integrally-formed pipe rings, adjacent pipe rings are tightened in the initial state, when the landslide body take place deformation, the gap between the adjacent pipe rings becomes larger to stretch the length of the spiral measuring tube, and furthermore, spatial locators change positions according to the change of the length of the spiral measuring tube, and output spectral characteristics; spatial locators send the output spectral characteristics to the detection module through ultrasonic signals, and the detection module receives ultrasonic signals of the spatial locators, as well as obtains the spatial coordinates of the spatial locators by analysing the ultrasonic signals; further, the spatial coordinates of spatial locators are analysed, so as to obtain the spatial sequence data of the spiral measuring tube, and then obtain the change of the spiral measuring tube, and furthermore obtain the landslides deformation.
Furthermore, the number of the spatial locators is positively related to the deformation measurement accuracy of the landslide body, the spatial locators are evenly distributed in the spiral measuring tube along the axial direction, and the spatial locators are electrically connected with the adjacent spatial locators through cables.
Furthermore, the spiral measuring tube is made of steel wire reinforced polyurethane.
Furthermore, the bottom end of the spiral measuring tube is fixed below 0.5 m in the bedrock surface.
Furthermore, spatial locators are connected with a power supply through cables, 507942 and the power supply supplies power to spatial locators.
Furthermore, the upper part of the spiral measuring tube is on the surface of the landslide body, the upper end of the spiral measuring tube is inserted into the joint bearing, the exposed part of the spiral measuring tube is fixed in the monitoring pier, and the monitoring pier provides the surface mark for the monitoring system; when the spiral measuring tube is stretched, the joint bearing drives the spiral measuring tube to rotate, which is convenient for the stretching of the spiral measuring tube.
Furthermore, the joint bearing comprises an inner ring, an outer ring, a cage and steel balls; the steel balls are arranged between the inner ring and the outer ring, the cage fixes the steel balls, and the spiral measuring tube is fixed in the inner ring; when the spiral measuring tube is subjected to axial tension, the spiral measuring tube drives the inner ring to move through friction, the inner ring drives the steel balls to move, and at the same time the movement of the steel balls accelerates the movement of the inner ring, thereby driving the spiral measuring tube to rotate.
Furthermore, the detection module is arranged at the stable position of the rear edge of the landslide body, and is connected with a communication module, the communication module is wirelessly connected with a data receiving terminal; according to the method, the communication module is a GPRS wireless transmission device, uses the short message of GSM mobile communication network and GPRS service to build a long-distance data transmission platform, and transmits the data in the detection module to the data receiving terminal; the data receiving terminal is a PC, a mobile phone or a workstation, and is used to store and manage the received data.
A self-adaptive inclinometer for measuring large deep-seated ground deformation of landslide includes the following steps: (1) Reconnoitre the landslide body and confirm the key monitoring positions; (2) Drill a monitoring hole from the surface of the landslide body to the bedrock surface, and determine the length of the spiral measuring tube and the number of spatial locators according to the depth and measurement accuracy of the monitoring 507942 hole; (3) Install spatial locators in the spiral measuring tube, insert the spiral measuring tube into the monitoring hole, fix the bottom end of the spiral measuring tube below 0.5 m in the bedrock surface, backfill the rock-soil mass excavated from the monitoring hole into the monitoring hole, sleeve the joint bearing at the upper end of the spiral measuring tube, and build a monitoring pier between the joint bearing and the ground surface; (4) When the landslide occurs, the spiral measuring tube is stretched, and the joint bearing drives the spiral measuring tube to rotate, with the stretching of the spiral measuring tube, the positions of spatial locators change, spectrum characteristics are output, and spatial locators send the output spectrum characteristics to the detection module through ultrasonic signals; the detection module receives the ultrasonic signals of spatial locators, obtains the spatial coordinates of spatial locators by analysing the ultrasonic signals, and obtains the spatial sequence data of the spiral measuring tube by analysing the spatial coordinates of spatial locators, so as to obtain the deformation of the spiral measuring tube and further obtain the deformation of landslide body; (5) The detection module transmits all the data in step (4) to the data receiving terminal through the communication module, and the data receiving terminal stores and manages the received data.
Compared with the prior art, the invention has the following beneficial effects:
1. The invention provides a stable and safe underground space by the steel wire reinforced polyurethane spiral sounding pipe, which can adapt to the large deformation of landslides, protect internal monitoring instruments while coordinating deformation with surrounding rock-soil mass, provide power supply, and realize long-term and full-process tracking monitoring of deep large deformation of landslides.
2. The invention determines the spatial attitude of the spiral measuring tube by receiving different ultrasonic waves emitted by spatial locators on the ground,
indirectly obtains the spatial change data of the deformation of rock-soil mass in the 507942 deep part of landslides, and breaks through the limitation of the conventional landslides deformation monitoring means.
3. The materials in the invention are all made by mature technologies, with simple structure and reasonable design.
4. The monitoring system of the invention may realize the monitoring of large deformation of landslides, and solve the problem that the traditional inclinometer monitoring method fails due to the destruction of inclinometer; in addition, the monitoring results are beneficial to clarify and judge the development trends of different stages of landslides deformation, as well as enrich and verify the existing landslides prediction methods.
BRIEF DESCRIPTION OF THE FIGURES FIG. 1 shows a diagrammatic sketch of a self-adaptive monitoring system for large deep-seated ground deformation of landslides of the present invention.
FIG. 2 shows a sectional view of the stretching state of the spiral measuring tube in FIG. 1.
FIG. 3 is an enlarged view of the monitoring pier and joint bearing in FIG. 1.
FIG. 4 is a schematic diagram of a self-adaptive monitoring system for large deep-seated ground deformation of landslides of the present invention.
DESCRIPTION OF THE INVENTION In order to make the objective, technical scheme and advantages of the present invention clearer, the embodiments of the present invention will be further described below with reference to the accompanying drawings.
Referring to FIG. 1 and FIG. 2, the embodiment of the present invention provides a self-adaptive monitoring system for large deep-seated ground deformation of landslides, which comprises a spiral measuring tube 1, many spatial locators 2 and a detection module 3, wherein many spatial locators 2 are installed in the spiral measuring tube 1, and the spiral measuring tube 1 is inserted into bedrock surface 12 from a landslide body 13. The bottom end of the spiral measuring tube 1 is fixed in the bedrock surface 12, and the detection module 3 is arranged at the stable position of the rear edge of the landslide body 13, as well as connected with the 7501342 communication module 4; the communication module is wirelessly connected with a data receiving terminal (not shown in the figure). In one embodiment, spatial locators 2 are connected with a power supply 7 through cables 6, and the power supply 7 supplies power to spatial locators 2.
Referring to FIG.2, the number of spatial locators 2 is positively related to the deformation measurement accuracy of landslide body 13. The spatial locators 2 are evenly distributed in the spiral measuring tube 1 along the axial direction, and electrically connected with the adjacent spatial locators 2 through cables 6.
The spiral measuring tube 1 includes several integrally-formed pipe rings 11, and is preferably made of steel wire reinforced polyurethane. The bottom end of the spiral measuring tube 1 is fixed below 0.5 m in the bedrock surface 12, while the upper part of the spiral measuring tube 1 is on the surface of the landslide body 13. The upper end of the spiral measuring tube 1 is inserted into the joint bearing 8, the exposed part of the spiral measuring tube 1 is fixed in the monitoring pier 9, and the monitoring pier 9 provides the ground mark for the monitoring system.
The joint bearing 8 comprises an inner ring 81, an outer ring 82, a cage 83 and steel balls 84; the steel balls 84 are arranged between the inner ring 81 and the outer ring 82, the cage 83 fixes the steel balls 84, and the spiral measuring tube 1 is fixed in the inner ring 81; when the spiral measuring tube 1 is subjected to axial tension, the spiral measuring tube 1 drives the inner ring 81 to move through friction, the inner ring 81 drives the steel balls 84 to move, and at the same time the movement of the steel balls 84 accelerates the movement of the inner ring 81, thereby driving the spiral measuring tube 1 to rotate.
The communication module is preferably a GPRS wireless transmission device, uses the short message of GSM mobile communication network and GPRS service to build a long-distance data transmission platform, and transmits the data in the detection module to the data receiving terminal; the data receiving terminal is a PC, a mobile phone or a workstation, and is used to store and manage the received data.
In the initial state, the pipe rings 11 of the spiral measuring tube 1 are tightened 507942 with the adjacent pipe ring 11. When the landslide body 13 is displaced, the spiral measuring tube 1 bears axial tension and radial pressure, and the gap between the pipe ring 11 and the adjacent pipe ring 11 becomes larger to stretch the length of the spiral measuring tube 1. Th e joint bearing 8 drives the spiral measuring tube 1 to rotate, and is beneficial for stretching spiral measuring tube 1. Spatial locators 2 change positions according to the change of the length of the spiral measuring tube 1, and output spectral characteristics; spatial locators 2 send the output spectral characteristics to the detection module 3 through ultrasonic signals, and the detection module 3 receives ultrasonic signals of the spatial locators 2, as well as obtains the spatial coordinates of the spatial locators 2 by analysing the ultrasonic signals; further, the spatial coordinates of spatial locators 2 are analysed, so as to obtain the spatial sequence data of the spiral measuring tube 1, and then obtain the change of the spiral measuring tube 1, and furthermore obtain the landslides deformation of landslide body 13.
A self-adaptive inclinometer for measuring large deep-seated ground deformation of landslide includes the following steps: (1) Reconnoitre the landslide body 13 and confirm the key monitoring positions; (2) Drill a monitoring hole from the surface of the landslide body 13 to the bedrock surface 12, and determine the length of the spiral measuring tube 1 and the number of spatial locators according to the depth and measurement accuracy of the monitoring hole; (3) Install spatial locators? in the spiral measuring tube 1, insert the spiral measuring tube 1 into the monitoring hole, fix the bottom end of the spiral measuring tube 1 below 0.5 m in the bedrock surface 12, backfill the rock-soil mass excavated from the monitoring hole into the monitoring hole, sleeve the joint bearing 8 at the upper end of the spiral measuring tube 1, and build a monitoring pier 9 between the joint bearing 8 and the ground surface; (4) When the landslide occurs, the spiral measuring tube 1 is stretched, and the joint bearing 8 drives the spiral measuring tube 1 to rotate, with the stretching of the spiral measuring tube 1, the positions of spatial locators 2 change, spectrum characteristics are output, and spatial locators 2 send the output spectrum 507942 characteristics to the detection module 3 through ultrasonic signals; the detection module 3 receives the ultrasonic signals of spatial locators 2, obtains the spatial coordinates of spatial locators 2 by analysing the ultrasonic signals, and obtains the spatial sequence data of the spiral measuring tube 1 by analysing the spatial coordinates of spatial locators 2, so as to obtain the deformation of the spiral measuring tube 1 and further obtain the deformation of landslide body 13; (5) The detection module 3 transmits all the data in step (4) to the data receiving terminal through the communication module 4, and the data receiving terminal stores and manages the received data.
Referring to FIG. 4, the working principles of the spatial locator 2 and the detection module 3 are as follows: Spatial locators 2 transmit signals to the earth surface in the form of outward ultrasonic waves, and different spatial locators 2 have different spectral characteristics. Taking Pn as an example, the detection module 3 measures the linear distance, horizontal angle a and the vertical angle B of Pn with a certain underground spatial locator; a coordinate system is established with the detection module 3 as the coordinate origin, and the coordinate values of Y, Z and X of the space locator Pn may be converted by the relevant spatial coordinate calculation formula. Similarly, the spatial coordinates of other spatial locators 2 may be obtained, the spatial sequence data of the spiral measuring tube 1 may be obtained through data processing, and the attitude characteristics of the spiral measuring tube 1 can be obtained through certain filtering processing. When the deep deformation of the landslide increases, the spiral measuring tube 1 is stretched, and can be continuously monitored because of its redundant length.
The invention provides a stable and safe underground space by the steel wire reinforced polyurethane spiral sounding pipe, which can adapt to the large deformation of landslides, protect internal monitoring instruments while coordinating deformation with surrounding rock-soil mass, provide power supply, and realize long-term and full-process tracking monitoring of deep large deformation of 507942 landslides.
The invention determines the spatial attitude of the spiral measuring tube by receiving different ultrasonic waves emitted by spatial locators on the ground, indirectly obtains the spatial change data of the deformation of rock-soil mass in the deep part of landslides, and breaks through the limitation of the conventional landslides deformation monitoring means; the materials in the invention are all made by mature technologies, with simple structure and reasonable design; and the monitoring system of the invention may realize the monitoring of large deformation of landslides, and solve the problem that the traditional inclinometer monitoring method fails due to the destruction of inclinometer; in addition, the monitoring results are beneficial to clarify and judge the development trends of different stages of landslides deformation, as well as enrich and verify the existing landslides prediction methods.
In this paper, the related directional words such as front, back, up and down are defined by the positions of parts in the drawing and parts among each other, just to express the clarity and convenience of the technical scheme. It should be understood that the use of the locative words should not limit the scope of protection claimed in this application.
Without conflict, the embodiments described above and the features in the embodiments herein can be combined with each other.
What has been described above is only the preferred embodiment of the present invention, and it is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims (9)

CLAIMS LU501342
1. Self-adaptive inclinometer for measuring large deep-seated ground deformation of landslide, characterized by including a spiral measuring tube, many spatial locators and a detection module, wherein many spatial locators are installed in the spiral measuring tube, and the spiral measuring tube is inserted into bedrock surface from a landslide body, the bottom end of the spiral measuring tube is fixed in the bedrock surface; the spiral measuring tube includes many integrally-formed pipe rings, adjacent pipe rings are tightened in the initial state, when the landslide body take place deformation, the gap between the adjacent pipe rings becomes larger to stretch the length of the spiral measuring tube, and furthermore, spatial locators change positions according to the change of the length of the spiral measuring tube, and output spectral characteristics, spatial locators send the output spectral characteristics to the detection module through ultrasonic signals, and the detection module receives ultrasonic signals of the spatial locators, as well as obtains the spatial coordinates of the spatial locators by analysing the ultrasonic signals; further, the spatial coordinates of spatial locators are analysed, so as to obtain the spatial sequence data of the spiral measuring tube, and then obtain the change of the spiral measuring tube, and furthermore obtain the landslides deformation.
2. Self-adaptive inclinometer for measuring large deep-seated ground deformation of landslide according to claim 1, characterized in that the number of the spatial locators is positively related to the deformation measurement accuracy of the landslide body, the spatial locators are evenly distributed in the spiral measuring tube along the axial direction, and the spatial locators are electrically connected with the adjacent spatial locators through cables.
3. Self-adaptive inclinometer for measuring large deep-seated ground deformation of landslide according to claim 1, characterized in that the spiral measuring tube is made of steel wire reinforced polyurethane.
4. Self-adaptive inclinometer for measuring large deep-seated ground deformation of landslide according to claim 1, characterized in that the bottom end of the spiral measuring tube is fixed below 0.5 m in the bedrock surface.
5. Self-adaptive inclinometer for measuring large deep-seated ground 507942 deformation of landslide according to claim 1, characterized in that spatial locators are connected with a power supply through cables, and the power supply supplies power to spatial locators.
6. Self-adaptive inclinometer for measuring large deep-seated ground deformation of landslide according to claim 1, characterized in that the upper part of the spiral measuring tube is on the surface of the landslide body, the upper end of the spiral measuring tube is inserted into the joint bearing, the exposed part of the spiral measuring tube is fixed in the monitoring pier, and the monitoring pier provides the surface mark for the monitoring system; when the spiral measuring tube is stretched, the joint bearing drives the spiral measuring tube to rotate, which is convenient for the stretching of the spiral measuring tube.
7. Self-adaptive inclinometer for measuring large deep-seated ground deformation of landslide according to claim 1, characterized in that the joint bearing comprises an inner ring, an outer ring, a cage and steel balls; the steel balls are arranged between the inner ring and the outer ring, the cage fixes the steel balls, and the spiral measuring tube is fixed in the inner ring; when the spiral measuring tube is subjected to axial tension, the spiral measuring tube drives the inner ring to move through friction, the inner ring drives the steel balls to move, and at the same time the movement of the steel balls accelerates the movement of the inner ring, thereby driving the spiral measuring tube to rotate.
8. Self-adaptive inclinometer for measuring large deep-seated ground deformation of landslide according to claim 1, characterized in that the detection module is arranged at the stable position of the rear edge of the landslide body, and is connected with a communication module, the communication module is wirelessly connected with a data receiving terminal, the communication module is a GPRS wireless transmission device, uses the short message of GSM mobile communication network and GPRS service to build a long-distance data transmission platform, and transmits the data in the detection module to the data receiving terminal; the data receiving terminal is a PC, a mobile phone or a workstation, and is used to store and 10501368 manage the received data.
9. Self-adaptive inclinometer for measuring large deep-seated ground deformation of landslide includes the following steps: (1) reconnoitre the landslide body and confirm the key monitoring positions; (2) drill a monitoring hole from the surface of the landslide body to the bedrock surface, and determine the length of the spiral measuring tube and the number of spatial locators according to the depth and measurement accuracy of the monitoring hole; (3) install spatial locators in the spiral measuring tube, insert the spiral measuring tube into the monitoring hole, fix the bottom end of the spiral measuring tube below
0.5 m in the bedrock surface, backfill the rock-soil mass excavated from the monitoring hole into the monitoring hole, sleeve the joint bearing at the upper end of the spiral measuring tube, and build a monitoring pier between the joint bearing and the ground surface; (4) when the landslide occurs, the spiral measuring tube is stretched, and the joint bearing drives the spiral measuring tube to rotate, with the stretching of the spiral measuring tube, the positions of spatial locators change, spectrum characteristics are output, and spatial locators send the output spectrum characteristics to the detection module through ultrasonic signals; the detection module receives the ultrasonic signals of spatial locators, obtains the spatial coordinates of spatial locators by analysing the ultrasonic signals, and obtains the spatial sequence data of the spiral measuring tube by analysing the spatial coordinates of spatial locators, so as to obtain the deformation of the spiral measuring tube and further obtain the deformation of landslide body; (5) the detection module transmits all the data in step (4) to the data receiving terminal through the communication module, and the data receiving terminal stores and manages the received data.
LU501342A 2022-01-27 2022-01-27 Self-adaptive Inclinometer for Measuring Large Deep-seated Ground Deformation of Landslide LU501342B1 (en)

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LU501342A LU501342B1 (en) 2022-01-27 2022-01-27 Self-adaptive Inclinometer for Measuring Large Deep-seated Ground Deformation of Landslide

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Application Number Priority Date Filing Date Title
LU501342A LU501342B1 (en) 2022-01-27 2022-01-27 Self-adaptive Inclinometer for Measuring Large Deep-seated Ground Deformation of Landslide

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LU501342B1 true LU501342B1 (en) 2022-08-10

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