Algorithm of Potentially Burst-Hazard Zones Dynamics Representation in Massif of Rocks by Results of Seismic-Acoustic Monitoring
- M. A. Guzev (IAM FEB RAS) | I. Yu. Rasskazov (IGD FEB RAS) | G. Sh. Tsitsiashvili (IAM FEB RAS)
- Document ID
- International Society for Rock Mechanics and Rock Engineering
- ISRM European Rock Mechanics Symposium - EUROCK 2017, 20-22 June, Ostrava, Czech Republic
- Publication Date
- Document Type
- Conference Paper
- 2017. Elsevier Ltd. Permission to distribute - International Society for Rock Mechanics and Rock Engineering
- A burst hazard zone, a connectivity component a non-directed graph, A burst hazard zone, A burst hazard zone, a connectivity component a non-directed graph, a connectivity component a non-directed graph
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The practical algorithm for determination of burst hazard zones using data from an automated system of mining pressure control is suggested. A procedure of an emergence prognosis is designed using the index of burst hazard, KUD, that characterizes the geo-mechanical state of rock stratum. A computer experiment is presented which illustrates the possibility of a suggested prognosis procedure.
The field development and underground mining works at difficult geological conditions and at great depths requires the effective methods and tools of prognosis and prevention of the manifestations of rock pressure, the most dangerous form of which are rock and rock-tectonic bursts. To predict the dangerous manifestations of rock pressure, multi-channel automated geo-mechanical monitoring systems are widely used in the global mining practice. In Russia, the geo-acoustic measuring complex ”Prognoz ADS” is installed on a number of burst hazard fields [1, 2]. It operates to measure and process the parameters of the geo-acoustic activity, which reflects changes in processes of deformation and redistribution of stresses in the rock massif under the influence of mining.
To identify the potentially bump hazardous areas in rock massif where the sites of destructive geodynamic phenomena are formed, we used / applied the cluster analysis methods. Algorithm of determination of potentially hazardous areas is based on graph theory. It uses a representation of observations in the form of a graph, whose nodes are the point sources of sound. We introduce edges in the graph, if the ”distances” between two points are smaller than some critical value. The graph connectivity components characterize the attribution of micro seismo-acoustic events to clusters. The initial data for the clusters construction is an array of coordinates of the point sources of sound. Thus, these data allow us to create a film that shows the dynamics of the development of hazard zones.
To implement this algorithm, the software was developed which traces the formation of the sites of destructive geodynamic events in rock massif according to seismo-acoustic monitoring. The software analyzes the information after a certain interval of time and identifies potentially dangerous areas. Graphical output of software is represented interactively as 3D images. The size and displacement of the zones found can be assessed. The proposed algorithm and software in conjunction with the automated system of geo-mechanical monitoring were tested in the mining industry in the Far Eastern Russia and has shown to be effective for the identification of potentially hazardous areas in the mountain range. A preliminary version of the algorithm is presented in .
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