Rockburst grade predicting method based on information vector machine
An information vector machine and prediction method technology, applied in the field of underground engineering, can solve problems such as poor prediction results of rockburst geological disasters
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[0054] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0055] see figure 1 Shown, implementation process of the present invention comprises the following steps:
[0056] Step 1. Select the rockburst evaluation index and classification standard;
[0057] Referring to the research results on rockburst influencing factors, evaluation indicators and empirical criteria, according to the cause and characteristics of rockburst, the maximum shear stress σ of the surrounding rock of the cave wall is considered θ, Uniaxial compressive strength σ c , Uniaxial tensile strength σ t and rock elastic energy index W et and other main factors affecting rockburst, the selected stress coefficient σ θ / σ c , brittleness coefficient σ c / σ t , and elastic energy index W et As an evaluation index to determine whether rockburst occurs or not and the intensity level. where σ...
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