CN105005646A - Holographic method for analyzing stability safety of side slope - Google Patents
Holographic method for analyzing stability safety of side slope Download PDFInfo
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- CN105005646A CN105005646A CN201510381530.XA CN201510381530A CN105005646A CN 105005646 A CN105005646 A CN 105005646A CN 201510381530 A CN201510381530 A CN 201510381530A CN 105005646 A CN105005646 A CN 105005646A
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Abstract
The present invention discloses a holographic method for analyzing stability safety of a side slope, and data obtained by using the method is accurate and comprehensive. The holographic method for analyzing stability safety of a side slope comprises the steps of: (1) for a position whose slide-in point and slide-out point of a sliding surface of a side slope are given, calculating safety coefficients of all sliding surfaces under a designated sliding mechanism and/or a constraint condition; and (2) by using an optimization method, finding a sliding surface having a minimum safety coefficient among all the sliding surfaces that are under the designated sliding mechanism and/or constraint condition and that pass the slide-in point and the slide-out point.
Description
Technical field
The invention belongs to the side slope technical field of civil engineering work, Geotechnical Engineering, water conservancy and hydropower and traffic engineering, relate to a kind of stability of slope safety analysis holography method particularly, be mainly used in stability analysis and the Slope Treatment design of side slope.
Background technology
The stability and safety analytical approach of side slope has a lot, and main method is divided into limit equilibrium method and Strength Reduction of FEM two class.Limit equilibrium method is the safety coefficient first calculating given slipping plane, then finds most dangerous sliding surface by optimisation technique; Strength Reduction of FEM is by analyzing plasticity connected region determination most dangerous sliding surface.Method also prematurity in the determination of most dangerous sliding surface on the one hand, if the slope stability information spinner most dangerous sliding surface position finally obtained on the other hand and the minimum slip safety coefficient, information is more single.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, provides a kind of stability of slope safety analysis holography method, and its data obtained accurately, comprehensively.
Technical solution of the present invention is: this stability of slope safety analysis holography method, comprises the following steps:
(1) slipping into a little and skidding off position a little to given slope sliding face, calculates the safety coefficient of all slipping planes at the certain resolution interval under appointment sliding mechanism and/or restrictive condition;
(2) found by optimization method and specify by slipping into a little and skid off a little to meet in these 2 the slipping plane that in all slipping planes under sliding mechanism and/or restrictive condition, safety coefficient is minimum.
(3) provide to slip into point, skid off the safety factor of slope isogram that a position is coordinate axis in length and breadth.
The present invention is by calculating the safety coefficient of all slipping planes of specifying under sliding mechanism and/or restrictive condition, then found by optimization method and specify by slipping into a little and skid off a little to meet in these 2 the slipping plane that in all slipping planes under sliding mechanism and/or restrictive condition, safety coefficient is minimum, and provide to slip into the safety coefficient isogram that the position skidded off a little is coordinate in length and breadth.So the data obtained accurately, comprehensively.
Accompanying drawing explanation
Fig. 1 a shows the safety coefficient isoline implementing the side slope Circular Sliding mechanism that method according to the present invention obtains; Fig. 1 b shows minimum safety factor slipping plane circular arc.
Fig. 2 shows the process flow diagram according to stability of slope safety analysis holography method of the present invention.
Embodiment
As shown in Figure 2, this stability of slope safety analysis holography method, comprises the following steps:
(1) slipping into a little and skidding off position a little to given slope sliding face, calculates the safety coefficient of all slipping planes under appointment sliding mechanism and/or restrictive condition;
(2) found by optimization method and specify by slipping into a little and skid off a little to meet in these 2 the slipping plane that in all slipping planes under sliding mechanism and/or restrictive condition, safety coefficient is minimum.
The present invention is by calculating the safety coefficient of all slipping planes of specifying under sliding mechanism and/or restrictive condition, then found by optimization method and specify by slipping into a little and skid off a little to meet in these 2 the slipping plane that in all slipping planes under sliding mechanism and/or restrictive condition, safety coefficient is minimum, so the data obtained accurately, comprehensively.
In addition, as shown in Fig. 1 a, 1b, in described step (2), specify sliding mechanism to be Circular Sliding mechanism, slip into point, skid off point, slip circle sagitta determines a slipping plane, with slip circle sagitta for variable, calculate the safety coefficient of the slip circle of each slip circle sagitta according to appointed interval, then adopt one dimensional optimization method, calculate each minimal point slip circle, and find out the position of the minimum slipping plane of safety coefficient.
In addition, the data of the slip circle of all calculated safety coefficient are stored in database.
In addition, the method also comprises step (3) and slips into a little and skid off a position with side slope for coordinate in length and breadth, obtains the isogram of safety factor of slope.
In addition, to slip into a little and to skid off a position for optimized variable, optimize and obtain side slope and specify most dangerous sliding surface under sliding mechanism and/or restrictive condition and minimum safety factor.
In addition, slipping into a little and skidding off a position for each specified coordinate interval, calculates corresponding minimum safety factor and most dangerous sliding surface, to inquire about Slide variation rate with slip change in depth information.
Below illustrate in greater detail the present invention.
To slip into a little and to skid off a position for coordinate in length and breadth, slip into a bit (slip into skid off point coordinate to) that skid off within the scope of point coordinate possible arbitrarily, optimize and obtain given sliding mechanism and (or) restrictive condition (as Circular Sliding mechanism, the slip degree of depth is greater than a certain value) all slip circles in the minimum slip circle of safety coefficient, and with certain coordinate resolution traversal institute a little, thus can obtain givenly slipping into the side slope the minimum slip safety coefficient data skidding off a position, and obtain the safety coefficient smallest point in these data.Data can draw to slip into and skid off the slope sliding safety coefficient isogram that a position is coordinate in length and breadth accordingly.With above-mentioned minimum safety factor point for starting point, to slip into, to skid off a position for optimized variable, most dangerous sliding surface position and minimum safety factor slip circle accurately can be found.
More specifically, first, slipping into a little and skidding off a position given slope sliding face, calculates the safety coefficient of the arbitrary slip surface of given sliding mechanism and/or restrictive condition, adopts optimization method to find out and slips into by given the most dangerous sliding surface skidded off a little.For Circular Sliding mechanism, slip into, skid off a position+slip circle sagitta and uniquely determine a slipping plane.Take sagitta as variable, obtain the safety coefficient of the slip circle of each sagitta according to certain intervals, then adopt one dimensional optimization method, obtain each minimal point slip circle, and find out most dangerous sliding surface position, the slip circle data of all calculated safety coefficient, all stored in database, are convenient to stability of slope design inquiry.
Secondly, with given coordinate interval, obtain all possible slipping into and skid off a little right minimum safety factor and most dangerous sliding surface position, and drawing isoline figure.According to safety coefficient isogram and calculation result data file, can inquire about to slip into arbitrarily skidding off a corresponding buckling safety factor and slip circle information.
3rd, with most dangerous sliding surface in above-mentioned result of calculation for optimizing starting point, adopt optimization method to find out slipping plane and the safety coefficient thereof of minimum safety factor.
The above; it is only preferred embodiment of the present invention; not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong to the protection domain of technical solution of the present invention.
Claims (6)
1. a stability of slope safety analysis holography method, is characterized in that: comprise the following steps:
(1) slipping into a little and skidding off position a little to given slope sliding face, calculates the safety coefficient of all slipping planes under appointment sliding mechanism and/or restrictive condition;
(2) found by optimization method and specify by slipping into a little and skid off a little to meet in these 2 the slipping plane that in all slipping planes under sliding mechanism and/or restrictive condition, safety coefficient is minimum.
2. stability of slope safety analysis holography method according to claim 1, it is characterized in that: in described step (2), specify sliding mechanism to be Circular Sliding mechanism, slip into point, skid off point, slip circle sagitta determines a slipping plane, with slip circle sagitta for variable, the safety coefficient of the slip circle of each slip circle sagitta is calculated according to appointed interval, adopt one dimensional optimization method again, calculate each minimal point slip circle, and find out the position of the minimum slipping plane of safety coefficient.
3. stability of slope safety analysis holography method according to claim 2, is characterized in that: the data of the slip circle of all calculated safety coefficient are stored in database.
4. stability of slope safety analysis holography method according to claim 3, is characterized in that: the method also comprises step (3) and slips into a little and skid off a position with side slope for coordinate in length and breadth, obtains the isogram of safety factor of slope.
5. stability of slope safety analysis holography method according to claim 3, is characterized in that: to slip into a little and to skid off a position for optimized variable, optimizes to obtain side slope and specify most dangerous sliding surface under sliding mechanism and/or restrictive condition and minimum safety factor.
6. stability of slope safety analysis holography method according to claim 5, it is characterized in that: slipping into a little and skidding off a position for each specified coordinate interval, calculate corresponding minimum safety factor and most dangerous sliding surface, to inquire about Slide variation rate with slip change in depth information.
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| CN201510381530.XA CN105005646B (en) | 2015-07-02 | 2015-07-02 | A kind of stability of slope safety analysis holography method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105279381A (en) * | 2015-11-09 | 2016-01-27 | 华能澜沧江水电股份有限公司 | Method for evaluating influence of earthquake on stability and safety of side slope |
| CN105653793A (en) * | 2015-12-29 | 2016-06-08 | 山东海量信息技术研究院 | Random verification method and apparatus |
| CN105804073A (en) * | 2016-03-29 | 2016-07-27 | 青岛理工大学 | Design method for multi-layer side slope anchor rod support length |
| CN108316320A (en) * | 2018-01-31 | 2018-07-24 | 青岛理工大学 | Unstable slope reinforcement design method |
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| CN103077270A (en) * | 2012-12-31 | 2013-05-01 | 河海大学 | Method for determining highest risk surface of side slope |
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| CN103077270A (en) * | 2012-12-31 | 2013-05-01 | 河海大学 | Method for determining highest risk surface of side slope |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105279381A (en) * | 2015-11-09 | 2016-01-27 | 华能澜沧江水电股份有限公司 | Method for evaluating influence of earthquake on stability and safety of side slope |
| CN105279381B (en) * | 2015-11-09 | 2019-03-15 | 华能澜沧江水电股份有限公司 | A method of assessment earthquake Slope Stability safety effects |
| CN105653793A (en) * | 2015-12-29 | 2016-06-08 | 山东海量信息技术研究院 | Random verification method and apparatus |
| CN105653793B (en) * | 2015-12-29 | 2019-03-05 | 山东海量信息技术研究院 | A kind of method and device of accidental validation |
| CN105804073A (en) * | 2016-03-29 | 2016-07-27 | 青岛理工大学 | Design method for multi-layer side slope anchor rod support length |
| CN108316320A (en) * | 2018-01-31 | 2018-07-24 | 青岛理工大学 | Unstable slope reinforcement design method |
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| CN105005646B (en) | 2018-08-10 |
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