Groundwatch PH

Electromagnetic and GPR Surveys

3D GPR Survey

Use this method when projects need stronger area-wide visualization than standard 2D radar lines, especially in dense utility corridors.

Definition

What this method is

3D GPR survey is a grid-based radar method that produces depth slices to map shallow subsurface targets in plan view and depth context.

Use this method when projects need stronger area-wide visualization than standard 2D radar lines, especially in dense utility corridors.

How It Works

From field measurement to interpreted model

  1. 1A survey grid is planned using target depth, expected utility spacing, and site access constraints.
  2. 2High-density radar lines are collected with positioning control and field quality checks.
  3. 3Processing produces depth slices and interpreted target zones for engineering and excavation planning.

When to Use

Best-fit conditions for this method

  • Dense utility corridors and complex industrial footprints
  • Shallow anomaly screening that needs area-wide depth slices
  • Pre-excavation planning where 2D lines are not enough

What It Can Help Identify

Subsurface features and signals

  • Utility clustering and crossing patterns
  • Shallow anomaly continuity across mapped grids
  • Priority verification areas before excavation or coring

Deliverables

What you receive

  • Grid layout and acquisition summary
  • Depth-slice maps and interpreted overlays
  • Verification-priority recommendations

Typical Outputs

What the data looks like

  • Depth-slice maps
  • Target continuity plots
  • Annotated planning overlays

Applications

Common applications in the Philippines

Urban utility conflict screening

Industrial retrofit and expansion planning

Infrastructure investigations requiring depth-slice interpretation

Method Limitations

What this method cannot do alone

  • Highly conductive soil or reinforced surfaces can reduce penetration and clarity.
  • Depth estimates are interpretation outputs and should be validated where design-critical.
  • Grid density and positioning quality strongly influence interpretation confidence.

Geophysical results are interpreted models based on measured physical property contrasts. Results should be correlated with boreholes, test pits, drilling, geological mapping, laboratory data, or other direct investigation methods where required.

Related Services

Methods and applications that work together

FAQs

Frequently Asked Questions

When is 3D GPR better than 2D GPR lines?

3D GPR is better when projects need area-wide depth-slice interpretation, utility congestion mapping, and stronger target continuity context.

Does 3D GPR replace direct verification?

No. It improves interpretation and planning, but direct verification remains necessary for critical excavation decisions.

Get in touch

Request 3D GPR survey planning

Share your area extents and target depth range so we can define grid spacing and deliverables.

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