Abstract
The analysis of the values of the permissible speed of seismic vibrations and the calculation of the limiting values of short-term vibration at the base of the protected objects of Ust-Katav town and the settlement of Maliy Berdyash are carried out. Instrumental measurements of the speed of seismic vibrations of soil and pressure at the front of an air shock wave (air blast) during a large-scale blast in a quarry of building stone (dolomites) of «Ust-Katavskiy Granite Quarry» LLC (UKGK) were carried out in order to determine and evaluate safe seismic and shock air the impact of blasting on residential buildings in the settlement of Maliy Berdyash and the building of a special comprehensive boarding school in the Ust-Katavskiy urban district of the Chelyabinsk region. The conditions for blasting that provide seismic safety of protected objects are determined.
Highlights
The quarry of building stone of UKGK LLC is located in the north of UstKatav town and Maliy Berdyash settlement
In order to ensure the seismic safety of the protected objects from large-scale blasts, in 2019 instrumental measurements of the actual maximum speed of seismic vibrations of soil and pressure were carried out at the air-blast front near the four-story special boarding school of the UstKatavskiy urban district of the Chelyabinsk region (Stroiteley str., D. 5, Ust-Katav town) and one-story barracks-type residential buildings (Tsentralnaya St., 2 and Berezovaya St., 1, Maliy Berdyash settlement) during a large-scale blast at a construction site of stone Ltd
Blasting work carried out on April 23, 2019 in the quarry of building stone of UKGK LLC was performed by Promvzryv LLC organization with the provision of seismic safety and the safety of impact air large-scale blasts. They do not adversely affect protected objects located in the immediate vicinity of the blasting zone: a special general boarding school of the Ust-Katavskiy urban district of the Chelyabinsk region (5 Stroiteley St., Ust-Katav town) and barracks-type residential buildings (2 Tsentralnaya St. and 1 Berezovaya St., Maliy Berdyash settlement)
Summary
The quarry of building stone (dolomites) of UKGK LLC is located in the north of UstKatav town and Maliy Berdyash settlement. 5, Ust-Katav town) and one-story barracks-type residential buildings (Tsentralnaya St., 2 and Berezovaya St., 1, Maliy Berdyash settlement) during a large-scale blast at a construction site of stone (dolomite) Ltd. The limiting value of short-term vibration was 3.25 cm / s for the building of a boarding school; 2.88 and 3.46 cm / s for residential buildings of the barracks type in the Maliy Berdyash settlement, which are located in the immediate vicinity of the blasting zone in the southern and southeastern sections of the building stone quarry (dolomites) of UKGK LLC.
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