Experimental Study on the Measurement of Water Bottom Vibration Induced by Underwater Drilling Blasting

Table 1

Basic performance indicators.

Input channel		Sensitivity	28 ± 10% V/m·s^−1	A/D resolution	16 bits
Frequency range	5–500 Hz (±3 db)	Scale range	0.005–0.35 m/s	Sampling frequency	2 k–8 kHz
Trigger pattern	On threshold	Trigger level	0.05 V–2 V	Signal sections	10
Power supply	Rechargeable lithium batteries	Battery life	24 hours	Time per section	5 s–20 s
Overall dimensions	Ф93 mm × 340 mm	Working temperature	−20°C–80°C	Negative delay time	−100 ms
Shell material	Duralumin (surface hardening)	Total weight	3 kg (excluding positioning block)	Water depth	⩽50 m