Groundwatch PH

Integrated Applications

Void and Cavity Detection

This service helps reduce collapse and excavation risk by prioritizing zones that require direct validation before construction decisions.

Definition

What this method is

Void and cavity detection combines suitable geophysical methods to screen areas where subsurface emptiness, dissolution, or low-density zones may be present.

This service helps reduce collapse and excavation risk by prioritizing zones that require direct validation before construction decisions.

How It Works

From field measurement to interpreted model

  1. 1The team defines known incidents, ground context, and the target risk area.
  2. 2Appropriate methods such as microgravity, resistivity, and GPR are selected based on site condition and depth objective.
  3. 3Integrated interpretation ranks potential cavity risk zones and recommends direct follow-up checks.

When to Use

Best-fit conditions for this method

  • Subsidence and sinkhole-risk screening
  • Pre-construction checks in karst-prone or variable ground
  • Investigation of unexplained settlement, cracking, or localized collapse risk

What It Can Help Identify

Subsurface features and signals

  • Potential low-density anomalies
  • Zones that may indicate cavity or void risk
  • Priority points for direct verification

Deliverables

What you receive

  • Void-risk interpretation map
  • Integrated anomaly ranking
  • Validation recommendations

Typical Outputs

What the data looks like

  • Potential cavity-risk zones
  • Method sections and anomaly overlays
  • Priority validation plan

Applications

Common applications in the Philippines

Infrastructure corridor and facility risk screening

Urban and industrial subsidence concern investigations

Karst-related development planning support

Method Limitations

What this method cannot do alone

  • Geophysical results indicate potential risk and do not confirm cavity presence on their own.
  • Direct investigation is required for confirmation before design-critical actions.

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

Can geophysics prove a void exists?

Geophysics can identify potential void-risk anomalies, but confirmation requires direct investigation such as drilling, probing, or excavation checks.

Which methods are commonly used for cavity-risk screening?

Programs may combine microgravity, resistivity, and GPR depending on site access, depth target, and expected ground conditions.

Get in touch

Screen for potential void risk

Share known incidents and target areas for planning.

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