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. A-DSHQ24D 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. A-DSHQ24D also 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.

Simple Introduction:

1. A-DSHQ24D
seismic water detector is our newly developed real 24 digits equipment worked
in WINXP system.

2. A-DSHQ24D is a leading seismograph having many features:
multi-functions, high accuracy, high speed, high reliability, good
human-machine interface function and expansibility. It can use hammer, electric
spark or explosion as inspiring source, the prospecting depth ranges from
several meters to thousands of meters. It can use time delay function to gain
more deep seismic information, and the applied methods are: reflection,
refraction, surface wave exploration, pile testing, earth pulse measurement,
high density earthquake imaging, tremor survey and shearing wave testing etc.

3. A-DSHQ24D is widely used in the engineering geological prospecting of water conservancy, electric power,
railway, bridge, city building and traffic etc., also resource survey in oil,
coalfield, uranium ore and underground etc.

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.

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¡æ;