Hydrodynamic landslide multi-information multi-source fusion early warning method
Technical Field
The invention relates to the fields of hydroelectric engineering safety and landslide disaster prevention and control, in particular to a hydrodynamic landslide multi-information multi-source fusion early warning method.
Background
With the construction of hydropower engineering in China, particularly the formation of a large high dam reservoir, the reservoir area is often developed with potential unstable landslides and toppling deformation bodies, hydrodynamic landslides are typical ones, and the influence of the hydrodynamic force on the landslides is large. In order to prevent landslide and other geological disasters from occurring on a landslide, monitoring, early warning and forecasting are usually adopted to early warn possible accidents so as to take necessary emergency measures to perform disaster-approaching early warning and disaster prevention and reduction. Landslide early warning is generally based on surface and deep deformation, stress, groundwater level and other monitoring data forecast and issue early warning information. However, the hydrodynamic landslide is a complex dynamic system, and the landslide deformation processes of different terrain and geological structures and different hydrodynamic conditions have great difference, so that the early warning is difficult to be performed by adopting a single index and a unified criterion.
Disclosure of Invention
The invention aims to provide a hydrodynamic landslide multi-information multi-source fusion early warning method aiming at the defects in the prior art, which is a landslide monitoring and early warning forecasting technology capable of forming multi-information multi-source fusion by uniformly considering internal and external factors influencing landslide formation according to a large amount of actual landslide multi-source long-sequence monitoring data and combining analysis results such as geological conditions, engineering comparison methods, numerical calculation and the like, establishing and researching a geological disaster early warning model and a judgment basis.
The invention is realized by the following technical scheme: the invention relates to a hydrodynamic landslide multiple information multi-source fusion early warning method which comprises a landslide early warning system structure, early warning classification, early warning criterion research, multi-source early warning information fusion, early warning grade judgment and early warning signal release;
the landslide early warning system structure comprises multiple information multi-source early warning system establishment, early warning characteristic point and model parameter selection, model establishment data processing and multiple early warning index characteristic value calculation;
the early warning grade comprises a landslide early warning grade and early warning signal division;
the early warning criterion research selects early warning indexes from the aspects of engineering analogy, safety monitoring, numerical calculation and database patrol investigation, and performs threshold calculation on the early warning indexes according to specifications and relevant documents;
the multi-source early warning information fusion carries out information fusion processing through various early warning criterion information in the aspects of engineering analogy, safety monitoring, numerical calculation and inspection in a patrol warehouse to obtain the hydrodynamic landslide state and early warning information;
and judging the early warning grade and issuing the early warning signal according to the multiple-fused early warning information and issuing the corresponding early warning signal.
Furthermore, the early warning classification comprises landslide early warning grade and early warning signal division, and the stability early warning of the rock slope engineering is divided into 3 grades, namely safety, basic safety and danger, according to the design specification of the slope of hydropower engineering (DL/T5353-one 2006); very safe, basic safe, dangerous and very dangerous 5 grades can also be classified; signs such as green, blue, orange, yellow, red, etc. may also be used to indicate different degrees.
Furthermore, the multi-information multi-source early warning system of the landslide early warning system structure is established from the aspects of engineering analogy, safety monitoring, numerical calculation and database patrol investigation according to the monitoring data of the hydrodynamic landslide.
Further, safety monitoring in the establishment of the multi-information multi-source landslide early warning system comprises the action of deformation, stress and hydrodynamic force; deformation in the safety monitoring comprises surface displacement monitoring and deep displacement monitoring; the stress in the safety monitoring comprises anchor rod stress and an anchor cable dynamometer; the hydrodynamic effects in the safety monitoring include reservoir level variation and rainfall monitoring.
Further, the database patrol investigation in the establishment of the multi-information multi-source early warning system comprises crack distribution development, bank collapse in near water, upper deformation and monitoring equipment damage.
Further, deformation early warning indexes of safety monitoring in the early warning criterion research comprise total deformation, deformation rate, deformation acceleration rate and deformation rate angle; stress early warning indexes of safety monitoring in the early warning criterion research comprise anchor cable stress change rate and anchoring force change rate; the hydrodynamic force early warning indexes for safety monitoring in the early warning criterion research comprise total reservoir water level falling amplitude, daily rainfall, rainfall duration and monthly rainfall.
Further, in the early warning criterion research, numerical calculation early warning is carried out to calculate a safety coefficient according to a landslide structure, a slope strength parameter and a selected numerical model; in the early warning criterion research, a landslide database is established by engineering analogy according to a landslide rock mass structure, a landslide inclination angle, a failure mode and an induction factor, and judgment is carried out according to landslide similarity; the early warning indexes of the inspection in the early warning criterion research combine crack distribution development, bank collapse in near water, upper deformation and monitoring equipment damage into macroscopic comprehensive information.
The method and the system scientifically perform hydrodynamic landslide monitoring and early warning, have clear thought and strong adaptability, and enable the hydrodynamic landslide monitoring and early warning to be more reasonable, scientific and safe.
Drawings
To more clearly illustrate the embodiments of the present study or the design of the warning scheme for monitoring data, the following description briefly describes the embodiments or the design of the warning scheme.
Fig. 1 is a schematic diagram of an early warning structure of a hydrodynamic landslide multi-information multi-source fusion early warning method according to the invention.
Fig. 2 is a design and construction diagram of an early warning index system of the hydrodynamic landslide multi-information multi-source fusion early warning method.
Detailed Description
The following description of specific embodiments of the present invention is provided in order to better understand the present invention with reference to the accompanying drawings.
Examples
In this embodiment, fig. 1 is a schematic diagram of an early warning structure of a hydrodynamic landslide multiple information multi-source fusion early warning method, which includes a landslide early warning system structure, early warning classification, early warning criterion research, multi-source early warning information fusion, early warning grade judgment, and early warning signal release.
The landslide early warning system structure comprises multiple information multi-source early warning system establishment, early warning characteristic point and model parameter selection, model establishment data processing and multiple early warning index characteristic value calculation.
The multi-information multi-source early warning system is established from the aspects of engineering analogy, safety monitoring, numerical calculation and inspection of a patrol database according to the monitoring data of the hydrodynamic landslide. The safety monitoring in the establishment of the multi-information multi-source landslide early warning system comprises the actions of deformation, stress and hydrodynamic force; deformation in the safety monitoring comprises surface displacement monitoring and deep displacement monitoring; the stress in the safety monitoring comprises anchor rod stress and an anchor cable dynamometer; the hydrodynamic effects in the safety monitoring include reservoir level variation and rainfall monitoring.
The early warning classification comprises landslide early warning grade and early warning signal division, and the stability early warning of the rock slope engineering is divided into 3 grades, namely safety, basic safety and danger, according to the design specification of the slope of hydropower and water conservancy engineering (DL/T5353-; very safe, basic safe, dangerous and very dangerous 5 grades can also be classified; signs such as green, blue, orange, yellow, red, etc. may also be used to indicate different degrees.
Watch (A)
Landslide safety monitoring and early warning standard
The early warning criterion research selects early warning indexes from the aspects of engineering analogy, safety monitoring, numerical calculation and database patrol investigation, and performs threshold value calculation on the early warning indexes on the basis of landslide monitoring data and geological conditions. Deformation early warning indexes of safety monitoring in the early warning criterion research comprise total deformation, deformation rate, deformation acceleration rate and deformation rate angle; stress early warning indexes of safety monitoring in the early warning criterion research comprise anchor cable stress change rate and anchoring force change rate; the hydrodynamic force early warning indexes for safety monitoring in the early warning criterion research comprise total reservoir water level falling amplitude, daily rainfall, rainfall duration and monthly rainfall.
In the early warning criterion research, numerical calculation early warning is carried out to calculate a safety coefficient according to a landslide structure, a slope strength parameter and a selected numerical model; in the early warning criterion research, a landslide database is established by engineering analogy according to a landslide rock mass structure, a landslide inclination angle, a failure mode and an induction factor, and judgment is carried out according to landslide similarity; the early warning indexes of the inspection in the early warning criterion research combine crack distribution development, bank collapse in near water, upper deformation and monitoring equipment damage into macroscopic comprehensive information.
And performing information fusion processing on the multiple early warning information fusion through multiple early warning criterion information in the aspects of engineering analogy, safety monitoring, numerical calculation and database patrol, and obtaining the hydrodynamic landslide state and early warning information.
And the early warning grade judgment and the early warning information release are used for judging and releasing corresponding early warning signals according to the multiple fused early warning information.
FIG. 2 is a design and construction diagram of an early warning index system of the hydrodynamic landslide multi-information multi-source fusion early warning method. Starting from the aspects of engineering analogy, safety monitoring, numerical calculation and database patrol exploration, the early warning information of multiple parameters is fused based on the early warning criterion and the early warning level standard of each index, and the early warning level and the early warning signal of the hydrodynamic landslide are comprehensively judged.
Finally, it should be noted that: the above examples are intended only to illustrate the technical process of the invention and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.