Research of seismic influence on buildings and structures of Satka town while exploding explosive works on the Karagayskiy career in constrained conditions

The analysis of methods for determining the permissible speed of seismic vibrations of the soil at the base of the protected objects of Satka town. The maximum permissible values of the rate of vibration of the soil were determined for the buildings and structures of the industrial site of the Karagaiskiy quarry of the mining enterprise PJSC “Kombinat “Magnezit” (buildings of the administrative household plant, underground steel water pipeline, pump station), as well as for residential and industrial buildings. Approximating functions are constructed and empirical correlation equations are obtained for the mining and geological conditions of the Karagaiskiy quarry, confirming the equation of M.A. Sadovskiy. Actual seismicity coefficients and seismic wave attenuation indices were determined based on instrumental measurements of the speed of seismic vibrations of soil at positive and negative rock temperatures from 2004 to 2019 for the geological conditions of the Karagaiskiy open pit in order to refine and evaluate the seismic safety of residential and industrial buildings, structures and natural infrastructure facilities of Satka town, Chelyabinsk region. Design decisions on the seismic safety of guarded facilities during blasting operations in cramped conditions during mining of the north-western section of the Karagaiskiy quarry were confirmed and the parameters of drilling and blasting operations ensuring the seismic safety of guarded facilities were clarified.

Keywords: blasting operations, cramped conditions, parameters of drilling and blasting operations, seismic safety, guarded objects, seismic effect of an explosion, seismic wave, speed of seismic vibrations of the soil, reduced distance, seismicity coefficient, attenuation index of seismic waves, shock air wave.

For citation:

Menshikov P.V., Taranzhin S.S., Flyagin A.S. Research of seismic influence on buildings and structures of Satka town while exploding explosive works on the Karagayskiy career in constrained conditions. MIAB. Mining Inf. Anal. Bull. 2020;(3-1):383-398. [In Russ]. DOI: 10.25018/0236-1493-2020-31-0-383-398.

Acknowledgements:

the Research was carried out within the framework of the State task # 07500581-19-00, topic # 0405-2019-0005 (2019-2021), as well as with additional involvement of contractual funds.

About authors:

Menshikov P.V.¹, junior researcher lab. rock breaking, e-mail: menshikovpv@mail.ru,
Taranzhin S.S.¹, junior research lab. rock breaking, e-mail: semen-vip@yandex.ru,
Flyagin A.S.¹, junior research lab. rock breaking, e-mail: flyagingdr@mail.ru,
¹ The Institute of Mining of the Ural branch of the Russian Academy of Sciences, 620075, Ekaterinburg, Russia.

 

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