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TEST STUDY ON DAMAGE OF SURROUNDING ROCK FROM SMOOTH AND PRESPLIT BLASTING

Yuan Jia

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Abstract

To study the effect of smooth and presplit blasting on surrounding rocks in the tunnel excavation,the effect size of this two blasting methods on surrounding rocks was analyzed by using the technology of monitoring blasting vibration,spectrum analysis and ultrasonic measurement and analyzing data from the field test.The results indicated presplit blasting had vibration isolation effect,but damage of surrounding rocks by using it was more than using smooth blasting.The proposed test methods and detection projects are scientific and reliable,which can provide scientific foundation for confirming blasting methods and blasting parameters in actual blasting projects.

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What this paper is about

To study the effect of smooth and presplit blasting on surrounding rocks in the tunnel excavation,the effect size of this two blasting methods on surrounding rocks was analyzed by using the technology of monitoring blasting vibration,spectrum analysis and ultrasonic measurement and analyzing data from the field test.The results indicated presplit blasting had vibration isolation effect,but damage of surrounding rocks by using it was more than using smooth blasting.The proposed test methods and detection projects are scientific and reliable,which can provide scientific foundation for confirming blasting methods and blasting parameters in actual blasting projects.

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Available abstract

To study the effect of smooth and presplit blasting on surrounding rocks in the tunnel excavation,the effect size of this two blasting methods on surrounding rocks was analyzed by using the technology of monitoring blasting vibration,spectrum analysis and ultrasonic measurement and analyzing data from the field test.The results indicated presplit blasting had vibration isolation effect,but damage of surrounding rocks by using it was more than using smooth blasting.The proposed test methods and detection projects are scientific and reliable,which can provide scientific foundation for confirming blasting methods and blasting parameters in actual blasting projects.

Key concepts: Rock blasting, Excavation, Geotechnical engineering, Engineering, Drilling and blasting, Foundation (evidence), Mining engineering, Geology

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