Introduction:
1. Seismic method used in underground water detection supplies comparation data in geological structure, stratum partition and lithology for hydrogeology. we can forecast the porosity of saturated sandstone containing water stratum through the study of speed reversion and reservoir bed structure, and also analyze water yield property of bedrock fracture.
2. It applies software processing procedures like reflection wave real amplitude recovery, vibration continuous time reduction, reflection wave bandwidth expansion and bright spot technology etc., then offers technical support of data processing for partition of stratum and water containing and space shape check.
3. Also it applies vertical wave reflection method and observation technology of 2D or 3D, to reflect complex change of geological phenomenon and wave field information of water containing stratum medium, from the aspects of dynamics and kinematics of seismic waves, then we can gain the formed character sign caused by the response to earthquake fluctuation from underground water containing stratum and bedrock fissure water yield zone.
Main Applications:
1. Refraction & reflection survey----- Bedrock layering and buried depth, hydraulic engineering advanced geological foundation investigation etc.
2. Surface wave investigation-------Overburden layer stratification survey, weathering zone investigation, underground cavities and disease geologic body prospecting, roadbed, road-dam, slop damage survey and so on.
3. Multi-wave high density seismic imaging------ Foundation and roadbed cavities prospecting, karst survey etc.
4. Field aseismic design survey-------- High-rise building and bridge vibration detection, basis investigation and safety estimation.
5. Civil engineering quality inspection------ Bridge piers and building piles detection etc.
6. City vibration and explosion safety estimation------Various explosion and vibration safety monitoring etc.
7. Shear wave measurement------Rock mass elasticity and mechanical parameters measurement etc.
Features:
1.Many seismic methods:surface wave,high density seismic imaging,pulse measurement,refraction and shear wave measurement,city vibration and explosion safety estimation,pile detection etc.
2.Worked in the system of Windows,it is felxible,use-friendly,strong functions and easy operation.
3.Large dynamic range and high technical parameters to satisfy city prospecting requirement and supply one more choice for field survey.
Main Parameters:
1. Simulation channels: 24 channels (1, 2, 3, 4, 6, 12, 24, 48 channels working modes optional)
2. Sampling rate: 10μs, 31.25μs, 62.5μs, 125μs, 250μs, 500μs, 1ms, 2 ms, 4 ms, 8 ms, 16 ms, 32 ms~400 ms some etc.
3. Sampling points: 512, 1024, 2048, 4096, 8192, 16384 etc, the longest record: 32768.
4. Preamplifier gains: each 6 channel as 1 group, 64 times (36dB), 16 times(24dB), 4 times(12dB) and 1 time optional;
5. A/D transformation: newest & super high speed Σ-Δ 24 bites A/D transformer.
6. Anti-alias filter: Auto tracking as sampling rate; -3dB(when at sampling rate 0.216 times), below to 120 dB; also matches all kinds of digital filter, critical frequency point(at -3dB) set manually upon the requirement;
7. Frequency response range: 0.1 to 4 KHz.
8. Noise: Less than 1 μV(in full frequency status)
9. Delay time: 0 to 9999 ms.
10. Amplitude inconsistence: superior to±0.02%
11. Phase consistence: Superior to ±0.01ms
12.Dynamic Range: superior to 144dB
13. Signal superposition reinforce: 32 bites
14. Operation system: WinXP
15. Data format: SEG-2, SEG-Y, CSP
16. Trigger: you can use hammering switch, explosion, and electric spark to trigger or break the cable and connect the trigger.
17. Clock: annual time clock, the time record by the file together with parameter is saved into the file.
18. Power: 12V±20% supplied by battery; whole power consumption: less than 4A (When working 48 channels, LCD super light, it is 5A).
19. Operation temperature: -10~+55℃;
20. Storage temperature: -20~+60℃, humidity: 90% RH.
PC and configuration: Industrial PC104 computer (933MHz) with 128M memory, hard-disk: no less than 40GB; Display: 1024*768 point super light TFT (color) LCD.
Input facility: the panel is equipped with film keyboard for field application, and also can connect PS/2 PC keyboard, mouse and tablet.
Interface: Double USB interface, PS/2 keyboard, mouse port, parallel port, network port etc.
Removable storage: U disk or matching mobile hard disk, USB mobile driven etc.
Processing software: Windows Operating System supports data sampling in various kinds of seismic working modes (sheared wave velocity test, surface wave exploration, pier foundation test, ground micro-tremor and explosion measurement, high density seismic imaging, shake measurement, shallow refraction or reflection survey etc).
