Seismic Exploration & Subsurface Imaging
We acquire 2D/3D data with vibroseis and seismic explosive sources to build the subsurface velocity model and structural section; the same team measures and reports blast-induced vibration — single responsibility from survey to report.
One Discipline, Two Lines
Seismic data acquisition and vibration monitoring rest on the same physics. DTEX runs both lines with its own crew; the two services can be procured separately or together.
Line 01
The full chain from design to processed section, in 2D and 3D spreads.
Line 02
Measuring blast-induced vibration, checking limits and reporting.
Method & Analysis
Move your cursor over the panel — the geophone line’s response to the source comes alive as a representation. In a real project these traces are inverted into a velocity model and a structural section.
Design & Field Work
Preliminary Assessment
Change the charge weight and the distance to pre-assess the expected peak particle velocity (PPV) via scaled distance.
PPV = K · (R / √Q)−β
Scaled distance: — m/kg½
This calculation is for preliminary assessment. Site constants K and β are calibrated per project with trial-shot measurements.
Open the Full ToolInternational Framework
Seismic data is delivered in international recording and positioning formats; vibration records are assessed against the standard that suits the project geography, structure type and client specification.
USBM RI 8507
The U.S. Bureau of Mines’ frequency-dependent PPV limit curves; a common reference for residential structures.
OSMRE 30 CFR 816.67
Distance-based maximum allowable PPV and scaled-distance application rules.
DIN 4150-3
Short-term vibration thresholds by structure type and frequency band; the framework most often required in Europe.
BS 7385-2
Setting cosmetic-damage thresholds in buildings for non-continuous vibration.
ISO 4866
General principles of structural vibration measurement: sensor placement, recording and data processing.
AS 2187.2 / SN 640312a
Regionally accepted norms for blasting safety and vibration impact assessment.
SEG-Y rev2 / SEG-D
Recording and delivering raw and processed seismic data in internationally accepted formats.
SEG-P1 / UKOOA P1-90
Reporting source and receiver coordinates in the standard positioning format.
IAGC HSE Guidelines
The International Association of Geophysical Contractors’ field health, safety and environment practice guidelines.
Field Footage
Plays on hover, enlarges on click. All footage is from the DTEX archive.
The permit set depends on the source type (vibroseis / explosive) and the work area. After the site survey we hand you a project-specific permit list and a process timeline.
A structure inventory is prepared before work, site constants are determined with trial measurements, and source energy is designed against the limit of the selected standard. All records are reported.
If the client specification names a standard, we follow it; if not, we propose the international standard best suited to the structure type and geography and agree on it in writing.
An explosive source produces a broadband, high-energy signal in a single shot. That means stronger reflections from deep targets — and the ability to acquire data at points that steep, rough terrain keeps vibroseis trucks out of.
A vibroseis unit is a heavy vehicle; it needs roads, manageable slopes and load-bearing ground. In forest, on steep slopes, across farmland and along lines with restricted access, the source point can only be reached with a drilled hole and a buried charge. A buried charge also couples energy straight into the ground, so ground-roll noise is lower.
No. A seismic charge is used to generate a signal, not to break rock; it is usually small and fired in a hole buried a few metres deep. The aim is a controlled, repeatable wave — not fragmentation.
Because the charge is buried and small, its effect is limited; even so, a structure inventory is prepared for every line, charges are designed by the scaled-distance rule and monitored with vibration measurements. Where readings approach the limit, the charge is reduced or the source is switched to vibroseis.
Yes. On the same line, vibroseis can work the accessible stretches while explosive sources cover the sections that are hard to reach or need higher energy — a hybrid spread.
Yes. Blast-induced vibration monitoring, recording and reporting is available independently of seismic data acquisition.
