CN103852806A - Method for forecasting landslide and side slope by using tunnel advance geology forecast technology - Google Patents
Method for forecasting landslide and side slope by using tunnel advance geology forecast technology Download PDFInfo
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- CN103852806A CN103852806A CN201410112645.4A CN201410112645A CN103852806A CN 103852806 A CN103852806 A CN 103852806A CN 201410112645 A CN201410112645 A CN 201410112645A CN 103852806 A CN103852806 A CN 103852806A
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Abstract
The invention discloses a method for forecasting landslide and side slope by using a tunnel advance geology forecast technology. The method is implemented by the following steps: I, establishing a reference point, and surveying and mapping a landslide mass; II, arranging testing pilot tunnels according to a pre-judged result; III, arranging an excitation source detector and a receiving source detector in the pilot tunnels; IV, testing; V, summarizing the results; VI, explaining the results and sorting; VII, constructing an exploratory hole for verifying and correcting the results, and constructing the exploratory hole for verifying according to a potential fracture obtained at a previous stage; VIII, correcting and completing a primary detection result, judging the safety of landslide and side slope, and making a final conclusion. The method has the advantages of easiness in learning and using, convenience in operation, stable results and relatively accurate forecast of the geological hazards of landslide and side slope.
Description
Technical field
The present invention relates to one utilizes tunnel geology tomography advanced prediction (TRT) technology to survey method sliding, side slope Potential failure surface.
Background technology
China is vast in territory, geographical environment, complex geologic conditions, and natural variation is strong, and various geologic hazards frequently occur, and have become one of multiple country of geologic hazard in the world, wherein with cunning, slope geological typical case the most.Exist area sliding, side slope harm to account for the more than 25% of national total area, the economic loss causing because of cunning, side slope is every year more than 15,000,000,000 yuan.Sliding, slope geological harm object is extensive, control expense costliness, life and property safety that part is sliding, side slope has badly influenced people.Reach more than 1,000 in china railway big-and-middle-sized cunning, the side slope distributing along the line and locate, transport 44 times every year on average suspends traffic.Part is sliding, side slope is huge, and length and width are continuous hundreds of meters and are even gone up km, and it is millions of to tens million of cubic meters that volume reaches.
At present, research work and patent about cunning, slope geological have, as a kind of device and method of monitoring Sliding Plane displacement deformation of people's inventions such as Hou Yuefeng, the Sliding Plane mechanics parameter computing method based on on-the-spot direct shear test of people's inventions such as Shen Qiang, the measurement Sliding Plane position of people's inventions such as Meng Xiangyue and method and the device etc. of slippage.But the maturation method for the forecast of cunning, side slope not yet occurs, on traditional cunning, the basis of side slope prediction work majority based on engineering geological survey, rely on slip-stick artist, expert's subjective experience to forecast sliding, side slope, there are following problems:
(1) traditional cunning, the work of side slope prediction are not the competent work of common engineering technical personnel, need to be completed by experience very abundant old slip-stick artist or expert.But veteran slip-stick artist and expert are little, and China has a large amount of cunnings, side slope, this is an outstanding contradiction, seriously restricts the carrying out of China's cunning, side slope forecast work.
(2) paradox of forecast result is remarkable.Traditional cunning, work of side slope prediction is that the experience based on expert is carried out, and different experts' knowledge experience difference, for same cunning, side slope, likely draw diametrically opposite conclusion, and this feature is very obvious.
(3) poor reliability of forecast result.Due to earth history, rock, soil layer situation sliding, side slope geologic body the inside are complicated and changeable, and have obvious regional Characteristics.For cannot see impalpable formation information, by virtue of experience judged by expert completely, reliability and the accuracy of forecast result are had a greatly reduced quality, and are inevitably subject to the subjective random impact of expert simultaneously.
In view of the above problems, the present invention fully uses for reference the successful Application of TRT technology in advanced geology for tunnel construction forecast, proposition utilizes TRT technology to forecast that method sliding, side slope disaster solves the defect of traditional forecast work, has obvious advantage sliding, in slope geological forecast work.
Summary of the invention
The object of this invention is to provide a kind of method that tunnel geological forecast technology is slided, side slope is forecast of utilizing, to overcome the defect of existing cunning, slope geological forecasting procedure, realize be easy to learn and use, cunning, slope geological forecasting procedure that easy to operate, result is stable, relatively accurate.
Realize foregoing invention object technical scheme, implement by following steps:
The first, set up reference point, mapping sliding mass; Set up coordinate system, survey and draw, draw the slope shape of each section of sliding mass, the slip-crack surface that anticipation sliding mass is possible;
The second, according to anticipation result, arrange test pilot tunnel; Pilot tunnel trend moves towards parallel with sliding mass as far as possible, and pilot tunnel quantity meets the requirement of measuring accuracy and result reliability, can cover whole cunning, side slope as far as possible, thereby realize, overall understanding is sliding, the object of side slope internal information;
The 3rd, in pilot tunnel, lay excitaton source, reception sources wave detector; Lay completely, survey crew is measured each point coordinate;
The 4th, test; Operating personnel, by far module, set up base station, connect computer, and whether check system normally works, and carries out data acquisition;
The 5th, achievement gathers; The result of collection is gathered, set up three-dimensional geological model according to coordinate;
The 6th, achievement decipher and arrangement; Make an explanation and evaluate by the three-dimensional geological model of setting up and result, judging potential slip-crack surface, the security of analysis of slope;
The 7th, construction exploratory hole carries out result verification and correction; According to the Potential failure surface obtaining previous stage, construction exploratory hole is verified;
The 8th, preliminary result of detection to be corrected and perfect, judgement is sliding, side slope safety, makes final conclusion.
That described pilot tunnel is built in is sliding, in side slope geologic body, sliding, side slope trend that plane trend is parallel to, cross sectional shape is the shape of a hoof, size meets tester's turnover.
Within the scope of pilot tunnel end 2m, lay excitaton source, lay reception sources wave detector outward apart from excitaton source 10-20m scope, excitaton source, reception sources wave detector quantity are determined by testing apparatus.
Described construction exploratory hole verifies it is to arrange some exploratory holes sliding, in side slope geologic body, sample analysis Rock And Soil information, and contrast with PRELIMINARY RESULTS, revise and improve PRELIMINARY RESULTS.
Beneficial effect of the present invention:
(1) TRT equipment operating is simple, easy to learn and easy to use, easily left-hand seat; Utilize that TRT technology is slided, slope geological forecast, lower comparatively speaking to engineering staff's requirement, common professional person all can operate through training, has reduced cunning, the slope geological forecast degree of dependence for experienced expert.
(2) utilize that TRT technology is slided, slope geological forecast, conclusion is reliable and stable.Different personnel, the conclusion that detecting devices draws are roughly the same, there will not be diametrically opposite conclusion.Meanwhile, effectively get rid of individual subjective random, result of detection is relatively more accurate.
Brief description of the drawings
Fig. 1 is that the present invention is slided, side slope is forecast overall sectional view.
Fig. 2 is that the present invention tests pilot tunnel reception sources, excitaton source is arranged sectional drawing.
Fig. 3 is that the present invention tests pilot tunnel reception sources, excitaton source vertical view.
Fig. 4 is that the present invention tests pilot tunnel reception sources, excitaton source side view.
Fig. 5 is implementation step process flow diagram of the present invention.
In figure, number: 1. sliding, side slope geologic body, 2. Potential failure surface, 3. pilot tunnel, 4. exploratory hole, 5. reception sources wave detector, 6. excitaton source, 7. slide bed .8. investigative range, 9. virtual face.
Embodiment
The technical solution adopted for the present invention to solve the technical problems and principle are:
In the sliding mass that has its source in sliding, slope geological occurs, have Potential failure surface, successful predicting is sliding, the generation key of slope geological is accurately to survey position and the feature of Potential failure surface in sliding, side slope body, and verifies.Described Potential failure surface is generally weak broken band, is usually located at different medium interface location, and the reflection coefficient of Potential failure surface upper and lower medium there are differences.The difference of described reflection coefficient can adopt TRT technology, utilizes sliding, the pilot tunnel of arteface on side slope body, measures and provide result of detection by TRT equipment; Described result of detection carries out decipher by slip-stick artist, provides the position of Potential failure surface, and judgement, analysis draw the material structure and character of Potential failure surface.The checking work of described forecast result adopts exploration means by slip-stick artist, construction exploratory hole, and sample analysis carries out, and the result of preliminary detection is revised and confirmed, provides final result, makes the whether conclusion of landing of sliding, side slope.Referring to Fig. 5.
Described pilot tunnel, is built in sliding, side slope geologic body, sliding, side slope trend that plane trend is parallel to, and cross sectional shape is the shape of a hoof, size meets tester's turnover.
Described TRT technology, equipment adopts TRT series specialized equipment (as TRT6000); Within the scope of pilot tunnel end 2m, lay excitaton source, lay reception sources wave detector outward apart from excitaton source 10-20m scope, excitaton source, reception sources wave detector quantity determine (diagram is respectively 6,10) by testing apparatus; Described achievement decipher is undertaken by expert engineer, sets up three-dimensional geological model, judges Potential failure surface, and initial analysis is sliding, the security of side slope.
The investigation and prospecting of described Qualify Phase, by slip-stick artist, sliding, arrange some exploratory holes in side slope geologic body, sample analysis Rock And Soil information, and contrasting with PRELIMINARY RESULTS, revises and improves PRELIMINARY RESULTS, evaluates stability sliding, side slope, makes final conclusion.
Below in conjunction with accompanying drawing, the invention will be further described:
With reference to Fig. 1, in the sliding mass that has its source in sliding, slope geological occurs, there is Potential failure surface 2, successful predicting is sliding, the generation key of slope geological is accurately to survey position, the feature of Potential failure surface 2 in sliding, side slope body, and verifies.Described Potential failure surface 2 is generally weak broken band, is usually located at different medium interface location, and the reflection coefficient of Potential failure surface 2 upper and lower mediums there are differences.The difference of described reflection coefficient can adopt TRT technology, utilizes sliding, the pilot tunnel 3 of arteface on side slope body, measures and provide result of detection by TRT equipment; Described result of detection carries out decipher by slip-stick artist, provides the position of Potential failure surface 2, and judgement, analysis draw the material structure and character of Potential failure surface 2.The checking work of described forecast result adopts exploration means by slip-stick artist, construction exploratory hole 4, and sample analysis carries out, and the result of preliminary detection is revised and confirmed, provides final result, makes the whether conclusion of landing of sliding, side slope.
Described pilot tunnel 3, is built in sliding, side slope geologic body 1, sliding, side slope trend that plane trend is parallel to, and cross sectional shape is the shape of a hoof, size meets tester's turnover.
With reference to Fig. 2, Fig. 3 and Fig. 4, described TRT technology, equipment adopts TRT series specialized equipment (as TRT6000); Within the scope of pilot tunnel 3 end 2m, lay excitaton source 6, lay reception sources wave detector 5 outward apart from excitaton source 10-20m scope, excitaton source 6, reception sources wave detector 5 quantity determine (diagram is respectively 6,10) by testing apparatus; Described achievement decipher is undertaken by expert engineer, sets up three-dimensional geological model, judges Potential failure surface 2, and initial analysis is sliding, the security of side slope.
The investigation and prospecting of described Qualify Phase, by slip-stick artist sliding, arrange some exploratory holes 4, sample analysis Rock And Soil information in side slope geologic body 1, and contrast with PRELIMINARY RESULTS, revise and improve PRELIMINARY RESULTS, evaluate stability sliding, side slope, make final conclusion.
Utilize TRT technology to forecast cunning, slope geological, implement by following steps:
The first, set up reference point, mapping sliding mass.Organizational project Shi Jinhang reconnaissance trip, collects useful information, and anticipation sliding mass Potential failure surface 2, sets up coordinate system, surveys and draws.
The second, arrange test pilot tunnel 3.To according to the result of estimating, arrange test pilot tunnel 3 by veteran slip-stick artist.The trend of pilot tunnel 3 moves towards parallel with sliding mass as far as possible, and the quantity of pilot tunnel 3 meets the demands, and can cover whole cunning, side slope as far as possible, thereby realize, overall understanding is sliding, the object of side slope internal information.
The 3rd, pilot tunnel 3, excitaton source 6, reception sources wave detector 5 conceptual designs, lay completely, and survey crew is measured each point coordinate.
The 4th, test.Operating personnel install reception sources wave detector 5 and far module, set up base station, connect computer, and whether check system normally works, and carries out data acquisition.
The 5th, achievement gathers.The result of collection is gathered, set up three-dimensional geological model according to coordinate.
The 6th, achievement decipher and arrangement, make an explanation and evaluate by the three-dimensional geological model of setting up and result,: the result of test mostly is the 3-D view that color is different, and on image, the concentrated scope region of loose point mostly is shatter belt, and adjacent area color is the more obvious region of sudden change relatively, the weak interphase in stratum, the darker region of color is more likely the region that water or silt collect, and judges thus potential slip-crack surface, the security of analysis of slope.
The 7th, construction exploratory hole 4 carries out result verification and correction.According to the Potential failure surface obtaining previous stage, construction exploratory hole is verified.
The 8th, preliminary result of detection to be corrected and perfect, judgement is sliding, side slope safety, makes final conclusion.
Content described in this instructions embodiment is only that inventive concept realized to enumerating of pattern; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also and conceive the equivalent technologies means that can expect according to the present invention in those skilled in the art.
Claims (4)
1. utilize the method that tunnel geological forecast technology is slided, side slope is forecast, implement by following steps:
The first, set up reference point, mapping sliding mass: set up coordinate system, survey and draw, draw the slope shape of each section of sliding mass, the slip-crack surface that anticipation sliding mass is possible;
Second, according to anticipation result, arrange test pilot tunnel: pilot tunnel trend moves towards parallel with sliding mass as far as possible, and pilot tunnel quantity meets the requirement of measuring accuracy and result reliability, can cover whole cunning, side slope, thereby realize, overall understanding is sliding, the object of side slope internal information as far as possible;
The 3rd, in pilot tunnel, lay excitaton source, reception sources wave detector; Lay completely, survey crew is measured each point coordinate;
The 4th, test: operating personnel, by far module, set up base station, connect computer, whether check system normally works, and carries out data acquisition;
The 5th, achievement gathers: the result of collection is gathered, set up three-dimensional geological model according to coordinate;
The 6th, achievement decipher and arrangement: make an explanation and evaluate by the three-dimensional geological model of setting up and result, judging potential slip-crack surface, the security of analysis of slope;
The 7th, construction exploratory hole carries out result verification and correction: according to the Potential failure surface obtaining previous stage, construction exploratory hole is verified;
The 8th, preliminary result of detection to be corrected and perfect, judgement is sliding, side slope safety, makes final conclusion.
2. according to claim 1ly utilize that tunnel geological forecast technology is slided, the method for side slope forecast, described pilot tunnel is built in cunning, side slope geologic body, sliding, side slope trend that plane trend is parallel to, cross sectional shape is the shape of a hoof, size meets tester's turnover.
3. according to claim 1ly utilize that tunnel geological forecast technology is slided, the method for side slope forecast, within the scope of pilot tunnel end 2m, lay excitaton source, lay reception sources wave detector outward apart from excitaton source 10-20m scope, excitaton source, reception sources wave detector quantity are determined by testing apparatus.
4. according to claim 1ly utilize that tunnel geological forecast technology is slided, the method for side slope forecast, described construction exploratory hole verifies it is to arrange some exploratory holes sliding, in side slope geologic body, sample analysis Rock And Soil information, and contrast with PRELIMINARY RESULTS, revise and improve PRELIMINARY RESULTS.
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| CN108414573A (en) * | 2018-01-11 | 2018-08-17 | 山东大学 | A kind of Stability Analysis Methods for Evaluating Landslide based on electrical method and numerical simulation |
| CN108877156A (en) * | 2018-09-06 | 2018-11-23 | 东北大学 | A kind of slope instability early warning system and method |
| CN112882125A (en) * | 2021-01-17 | 2021-06-01 | 北京市政路桥股份有限公司 | Tunnel-landslide mass comprehensive detection and stability analysis method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108877156A (en) * | 2018-09-06 | 2018-11-23 | 东北大学 | A kind of slope instability early warning system and method |
| CN112882125A (en) * | 2021-01-17 | 2021-06-01 | 北京市政路桥股份有限公司 | Tunnel-landslide mass comprehensive detection and stability analysis method |
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Application publication date: 20140611 |