CN102607488A - Device and method for monitoring displacement deformation of sliding surface of landslip - Google Patents
Device and method for monitoring displacement deformation of sliding surface of landslip Download PDFInfo
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- CN102607488A CN102607488A CN2012100428655A CN201210042865A CN102607488A CN 102607488 A CN102607488 A CN 102607488A CN 2012100428655 A CN2012100428655 A CN 2012100428655A CN 201210042865 A CN201210042865 A CN 201210042865A CN 102607488 A CN102607488 A CN 102607488A
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Abstract
The invention discloses a device and a method for monitoring displacement deformation of a sliding surface of a landslip. The device comprises a slope measuring pipe positioned under the ground and more than one obliquity angle sensor positioned inside the slope measuring pipe; and the device also comprises a large-deformation measurement system which corresponds to each obliquity angle sensor one by one; the large-deformation measurement system comprises a steel wire rope, a pulley, a coding sensor and a counter weight, wherein one end of the steel wire rope and the corresponding obliquity angle sensor are positioned at the same depth measuring position; the steel wire rope is wound around the pulley on a bracket; the other end of the steel wire rope is connected with the counter weight; and the coding sensor is fixed at the center of the pulley. Aiming at the defects of the conventional landslip drilling for measuring the slope displacement, the invention provides automatic monitoring equipment which is relatively low in construction cost and can monitor and describe the whole process of the sliding surface of the landslip from deformation to destabilization, and the measurement requirement can be met due to the measurement accuracy.
Description
Technical field
The present invention relates to geologic hazard monitoring and disaster and forecast the field in advance, particularly a kind of device and method of monitoring landslide slipping plane displacement deformation.
Background technology
Existing landslide deviational survey instrument, measuring accuracy is very high, also can realize automatic monitoring; But because the restriction of measuring principle, the range that makes tiltmeter measure is very limited, and slipping plane produces under the situation of big change in displacement on the landslide; Can not continue to measure; The sensor of tiltmeter is to be laid in the boring of measurement, and this sensing device is to be connected through data line with data collector, when slipping plane is frustrated disconnected deviational survey pipe; Can not continue to measure, therefore the monitoring for the long-term wide range of side slope has irremediable shortcoming.
Therefore a kind of can the monitoring described the landslide slipping plane from being deformed to the automatic monitoring equipment of the whole process of unstability, for the monitoring of landslide depth and research show particularly important.
Summary of the invention
The technical matters that the present invention will solve; Propose a kind of device and method of monitoring landslide slipping plane displacement deformation exactly, solve prior art and can't detect the landslide slipping plane and produce big change in displacement and frustrate the problem that also can't continue to measure when breaking the deviational survey pipe when slipping plane.
In order to solve the problems of the technologies described above; The present invention provides a kind of device of monitoring landslide slipping plane displacement deformation; Comprise being positioned at the underground deviational survey pipe more than one obliquity sensor inner that said device also comprises and each obliquity sensor large-deformation measuring system one to one with being positioned at the deviational survey pipe; Said large-deformation measuring system comprises wire rope, pulley, code sensor and weight; Wherein, an end of said wire rope and pairing obliquity sensor are positioned at same depth measurement position, and said wire rope is walked around the pulley that is positioned on the support, and its other end connects said weight; Said code sensor is fixed on the center of said pulley.
Preferably, said apparatus also has following characteristics:
Said device also comprises the data acquisition emitter, and the data line that is connected with said obliquity sensor all connects said data acquisition emitter with the data line that is connected with said code sensor, said data line.
Preferably, said apparatus also has following characteristics:
Said large-deformation measuring system also comprises the sensor protection workpiece, and said sensor protection workpiece comprises and is positioned at protection tube on the ground and the ring flange that is used for fixing said protection tube, is positioned at the said protection tube of steel wire penetrating on the ground, walks around said pulley again.
Preferably, said apparatus also has following characteristics:
It is outside that said wire rope is positioned at said deviational survey pipe.
Preferably, said apparatus also has following characteristics:
Said protection tube diameter is 159mm, and length is 3m; The diameter of said wire rope is 1mm, is with protective sleeve.
In order to solve the problems of the technologies described above, the present invention provides a kind of method of monitoring landslide slipping plane displacement deformation, comprising:
Installation steps: the landslide punching that will monitor the deviational survey pipe is installed, more than one obliquity sensor is installed in that said deviational survey pipe is inner, and is installed and the more than one one to one large-deformation measuring of each obliquity sensor system; Said large-deformation measuring system comprises wire rope, pulley, code sensor and weight; When said large-deformation measuring system is installed; One end and the pairing obliquity sensor of said wire rope are installed in same depth measurement position; Said wire rope is walked around the pulley that is positioned on the support; The other end at said wire rope connects said weight, and said code sensor is fixed on the center of said pulley;
Monitoring step: the primary data of gathering obliquity sensor and code sensor; When the slipping plane displacement deformation of landslide, the data of gathering obliquity sensor and code sensor are according to the change in displacement value monitoring slipping plane displacement deformation situation of the measurement point that obtains.
Preferably, said method also has following characteristics:
In said installation steps, the data line that also will be connected with said obliquity sensor all is connected to the data acquisition emitter with the data line that is connected with said code sensor;
In said monitoring step, gather the data of obliquity sensor and code sensor through said data acquisition emitter.
Preferably, said method also has following characteristics:
In said installation steps, also comprise and use fixedly protection tube of ring flange, and will be positioned at the said protection tube of steel wire penetrating on the ground, walk around said pulley again.
Preferably, said method also has following characteristics:
In said installation steps, it is outside that said wire rope is arranged on said deviational survey pipe.
Preferably, said method also has following characteristics:
Said protection tube diameter is 159mm, and length is 3m; The diameter of said wire rope is 1mm, is with protective sleeve.
The present invention is directed to the deficiency of existing landslide drillhole inclination survey side displacement, provide a kind of cost cheap relatively, can monitor and describe the landslide slipping plane from being deformed to the automatic monitoring equipment of the whole process of unstability, and measuring accuracy can satisfy measurement requirement.
Description of drawings
Fig. 1 is the monitoring landslide slipping plane displacement deformation Unit Installation synoptic diagram of the embodiment of the invention;
Fig. 2 is little distortion obliquity sensor instrumentation plan in the early stage of the embodiment of the invention;
Fig. 3 is the after-deformation measuring system instrumentation plan of the embodiment of the invention.
Embodiment
Hereinafter will combine accompanying drawing that embodiments of the invention are elaborated.Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.
Basic thought of the present invention is to adopt the mode of obliquity sensor and large-deformation measuring systems incorporate, the slipping plane distortion of monitoring landslide.When the little distortion in landslide; Because the obliquity sensor precision is high; Be main mainly with the obliquity sensor testing result; When the landslide produces large deformation even frustrate disconnected deviational survey pipe, can be main just with the large-deformation measuring measuring results, so just can monitor description and come down slipping plane from being deformed to the whole process of unstability.
As shown in Figure 1; When needs monitoring gliding mass 8 slides on basement rock 9; When obtaining slipping plane 7 displacement deformation data; Can adopt the device of the monitoring landslide slipping plane displacement deformation of the embodiment of the invention, comprise being positioned at the underground deviational survey pipe 1 more than one obliquity sensor 2 (present embodiment be three) inner, also comprise and each obliquity sensor 2 large-deformation measuring system one to one with being positioned at deviational survey pipe 1; Said large-deformation measuring system comprises wire rope 3, pulley 4, code sensor 5 and weight 6; Wherein, an end of said wire rope 3 and pairing obliquity sensor 2 are positioned at same depth measurement position, and said wire rope 3 is walked around the pulley 4 that is positioned on the support, and its other end connects said weight 6; Said code sensor 5 is fixed on the center of said pulley 4.
In addition; In order to gather and data communication; The device of the embodiment of the invention also can comprise data acquisition emitter (not shown); And the data line that is connected with said obliquity sensor all connects said data acquisition emitter with the data line (not shown) that is connected with said code sensor, said data line.
Above-mentioned large-deformation measuring system also can comprise sensor protection workpiece (not shown); Said sensor protection workpiece comprises the ring flange that is positioned at protection tube on the ground and is used for fixing said protection tube; Be positioned at wire rope 3 on the ground and pass said protection tube, walk around said pulley 4 again.In addition, said sensor protection workpiece can also comprise the top carrier and protection loam cake (not shown) that is used to protect said code sensor 5.
When mounted, said wire rope 3 can be installed in said deviational survey pipe 1 outside.Preferred in addition, said protection tube diameter is 159mm, and length is 3m; The diameter of said wire rope is 1mm, is with protective sleeve, and said protective sleeve is that internal diameter is the car rolling line of 1mm.
Correspondingly, the method for the embodiment of the invention comprises: installation steps and monitoring step, wherein:
1, installation steps: the landslide punching that will monitor the deviational survey pipe is installed, and more than one obliquity sensor is installed in that said deviational survey pipe is inner, and is installed and the more than one one to one large-deformation measuring of each obliquity sensor system; When said large-deformation measuring system is installed; One end and the pairing obliquity sensor of said wire rope are installed in same depth measurement position; Said wire rope is walked around the pulley that is positioned on the support; The other end at said wire rope connects said weight, and code sensor is fixed on the center of said pulley;
2, monitoring step: the primary data of gathering obliquity sensor and code sensor; When the slipping plane displacement deformation of landslide, the data of gathering obliquity sensor and code sensor are according to the change in displacement value monitoring slipping plane displacement deformation situation of the measurement point that obtains.
In addition, when adopting the data acquisition emitter, in said installation steps, the data line that also will be connected with said obliquity sensor all is connected to the data acquisition emitter with the data line that is connected with said code sensor; In said monitoring step, gather the data of obliquity sensor and code sensor through said data acquisition emitter.
In addition, when the sensor protection workpiece is installed, also need use fixedly protection tube of ring flange, and will be positioned at the said protection tube of steel wire penetrating on the ground, walk around said pulley again.
As shown in Figure 2, in monitoring step, when the little distortion in early stage of landslide, owing to the precision reason, the large-deformation measuring system can't accurately hold the situation of distortion, mainly by obliquity sensor monitoring Landslide Deformation situation.But because the obliquity sensor range is limited; When the landslide slipping plane produces big change in displacement or frustrates when breaking the deviational survey pipe when slipping plane; Because can there be bigger range in the large-deformation measuring system; So can monitor the situation of change of slipping plane well, as shown in Figure 3, frustrate when the deviational survey pipe and also can obtain measurement data when disconnected.
Further specify the present invention with concrete applying examples of the present invention below.
Should use in the example, apparatus of the present invention comprise: some high-precision tilt angle sensors, Φ 70 deviational survey pipes, the obliquity sensor matched and fixed support identical with the high-precision tilt angle number of sensors, some 1mm wire rope that have protective sleeve, the code sensor identical with wire rope quantity, have identical pulley of taking turns the footpath and sensor protection workpiece, supporting weight, data acquisition emission instrument (being the data acquisition emitter) and 18W solar panel, 65AH12V accumulator and the moistureproof anti-thunder and lightning panel box of wire rope with supporting fixed support, the support of code sensor.The sensor protection workpiece comprises protection tube (diameter is 159mm, is called 159 pipes), bottom fixed flange and top carrier and the protection loam cake of 3m.
According to the actual conditions of boring, select the measuring point of different depth, according to the measuring point mounted angle sensor and the steel cord ends measuring point of different depth; Obliquity sensor is fixed on the end (being in the inside of deviational survey pipe) of deviational survey pipe through the matched and fixed support, an end of the wire rope that is with protective sleeve is fixed on the outside of deviational survey pipe, steel cord ends installation position corresponding one by one (same depth measurement position) in the installation position of obliquity sensor and the hole; The deviational survey pipe is sunk to boring inside; The twice groove is arranged on the deviational survey pipe, and groove is 180 degree and distributes, and chooses wherein one groove main sliding direction (promptly measuring vergence direction) over against the landslide; This moment, the direction of measurement of obliquity sensor was the forward and reverse of main sliding direction of landslide and forward and reverse (being that the XY direction is at same surface level) that become 90 degree directions with main sliding direction; Deviational survey pipe standards length is 2m, 4m, by joint butt joint sinking deviational survey pipe, in the process of sinking deviational survey pipe; Guarantee that each deviational survey pipe groove is all the time over against the main sliding direction (deviational survey pipe interfacing part can guarantee that groove direction is constant all the time) that comes down; The cabling that in the process of immersed tube, will accomplish the data line of obliquity sensor and be with the wire rope of protective sleeve, after the inner laying of completion boring, backfill boring; Wire rope and data line are passed from sensor protection workpiece 159 pipe inside; This moment, code sensor was separately fixed on the pulley center of corresponding support, and the code sensor fixed support is fixed on the sensor protection workpiece, and the weight band of the other end of wire rope being walked around the quality that is fixed behind the pulley on the corresponding support respectively is tight; The weight that is connected with steel wire is near ground, and the data line of each sensor links to each other with data acquisition emission instrument through a bus.
After accomplishing construction and installation, carry out data acquisition first as initial value.
When the landslide produced little slippage along main sliding direction, the wire rope measuring point was owing to the reason of principle and precision can not in time accurately be held the situation of distortion, and therefore obliquity sensor plays a major role in the little distortion of side slope; Owing to adopt the high-precision tilt angle sensor, precision can reach 0.001 degree, and the angle that can accurately measure each some position obliquity sensor in the boring changes; The changing value of each Bit Shift can be measured according to the degree of depth of buried depth, the condition curve of boring can be depicted accurately according to initial value, because the high precision property of obliquity sensor; Its range is very limited, under the situation that produces big slippage, and the angle of inclination no to scale; The code sensor that this moment, wire rope connected begins to play a role, because wire rope and protective sleeve can slide relatively, when measuring point produces a certain amount of displacement; Wire rope can spur weight to the direction motion away from ground; The code sensor that drive is connected with pulley produces displacement data, again because weight near ground, the height of 159 pipes is 3m; Therefore the useful range on code sensor measurement landslide is 3m, and range can be described the process of side slope unstability fully.
When landslide generation sliding surface is frustrated, even frustrate when breaking the deviational survey pipe, frustrate the data line of the obliquity sensor below the disconnected position and probably frustrated disconnected; Therefore lose the effect of part obliquity sensor; Be laid in the wire rope measuring point of slipping plane below this moment, pulls wire rope generation displacement owing to frustrate, therefore can measure the displacement of frustrating accurately; Can confirm the position of sliding surface according to the degree of depth of the laying of measuring point; Confirm sliding surface, obliquity sensor and wire rope measuring point that sliding surface is above still can be described the above boring situation of sliding surface.
Therefore obliquity sensor cooperates the wire rope measuring point, the situation of the little distortion in early stage of not only can accurately describing to hole, and produce big displacement and frustrate under the disconnected situation and still can depict the boring situation at glide plane.
Detailed process in the face of construction further describes down:
Step 101 is played monitoring boring, confirms measuring point quantity and point position according to the prospecting by boring situation.
Step 102; Heavy deviational survey pipe and deviational survey pipe groove are over against main sliding direction; In heavy deviational survey pipe,, earlier obliquity sensor is fixedly connected with the obliquity sensor workpiece, it is being connected with the deviational survey pipe confirming mounted angle sensor on the good position in advance; On same position, connection wire rope measuring point is installed.
Step 103 is pursued joint sinking deviational survey pipe through web member and attachment screw, in the process of sinking; Float like underground water deviational survey pipe; Can be in the deviational survey pipe water-filling, the obliquity sensor degree of protection is that IP68 is right, still can normally use at the working environment of water, silt.
Step 104 in heavy deviational survey pipe, remains groove over against main sliding direction.
Step 105; The progressively past inner hole deposition that bores along with the deviational survey pipe; The installation of accomplishing each measuring point obliquity sensor and being with the protective sleeve steel cord ends; And the data line of deviational survey sensor is in the inner laying of deviational survey pipe, and the wire rope that is with protective sleeve is in the outside laying of deviational survey pipe, and record mark is known the measurement point position of every data lines and steel wire survey line.
Step 106, after completion boring is installed, backfill boring, filling concrete between deviational survey pipe and boring.
Step 107, with the data line of obliquity sensor, and 159 pipes of steel wire penetrating sensor protection workpiece, and through fixing 159 pipes of bottom fixed flange, the wire rope of each measuring point is walked around the pulley on the carrier of top and connected weight.
Step 108 with the data line of obliquity sensor and code sensor, is drawn in the lump with the data acquisition emitter and is connected.
Step 109, accumulator, the solar panel of connection data collection emitting device, test data.
Step 110 files test data as the primary data record of this boring monitoring.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a device of monitoring landslide slipping plane displacement deformation comprises being positioned at the underground deviational survey pipe more than one obliquity sensor inner with being positioned at the deviational survey pipe, it is characterized in that,
Said device also comprises and each obliquity sensor large-deformation measuring system one to one; Said large-deformation measuring system comprises wire rope, pulley, code sensor and weight; Wherein, an end of said wire rope and pairing obliquity sensor are positioned at same depth measurement position, and said wire rope is walked around the pulley that is positioned on the support, and its other end connects said weight; Said code sensor is fixed on the center of said pulley.
2. device as claimed in claim 1 is characterized in that,
Said device also comprises the data acquisition emitter, and the data line that is connected with said obliquity sensor all connects said data acquisition emitter with the data line that is connected with said code sensor, said data line.
3. according to claim 1 or claim 2 device is characterized in that,
Said large-deformation measuring system also comprises the sensor protection workpiece, and said sensor protection workpiece comprises and is positioned at protection tube on the ground and the ring flange that is used for fixing said protection tube, is positioned at the said protection tube of steel wire penetrating on the ground, walks around said pulley again.
4. according to claim 1 or claim 2 device is characterized in that,
It is outside that said wire rope is positioned at said deviational survey pipe.
5. device as claimed in claim 3 is characterized in that,
Said protection tube diameter is 159mm, and length is 3m; The diameter of said wire rope is 1mm, is with protective sleeve.
6. method of monitoring landslide slipping plane displacement deformation comprises:
Installation steps: the landslide punching that will monitor the deviational survey pipe is installed, more than one obliquity sensor is installed in that said deviational survey pipe is inner, and is installed and the more than one one to one large-deformation measuring of each obliquity sensor system; Said large-deformation measuring system comprises wire rope, pulley, code sensor and weight; When said large-deformation measuring system is installed; One end and the pairing obliquity sensor of said wire rope are installed in same depth measurement position; Said wire rope is walked around the pulley that is positioned on the support; The other end at said wire rope connects said weight, and said code sensor is fixed on the center of said pulley;
Monitoring step: the primary data of gathering obliquity sensor and code sensor; When the slipping plane displacement deformation of landslide, the data of gathering obliquity sensor and code sensor are according to the change in displacement value monitoring slipping plane displacement deformation situation of the measurement point that obtains.
7. like the said method of claim 6, it is characterized in that,
In said installation steps, the data line that also will be connected with said obliquity sensor all is connected to the data acquisition emitter with the data line that is connected with said code sensor;
In said monitoring step, gather the data of obliquity sensor and code sensor through said data acquisition emitter.
8. like claim 6 or 7 said methods, it is characterized in that,
In said installation steps, also comprise and use fixedly protection tube of ring flange, and will be positioned at the said protection tube of steel wire penetrating on the ground, walk around said pulley again.
9. like claim 6 or 7 said methods, it is characterized in that,
In said installation steps, it is outside that said wire rope is arranged on said deviational survey pipe.
10. like the said method of claim 8, it is characterized in that,
Said protection tube diameter is 159mm, and length is 3m; The diameter of said wire rope is 1mm, is with protective sleeve.
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