Effect of ground control mesh on dust sampling and explosion mitigation.

Area of Science:

• Occupational safety and health
• Mining engineering
• Dust explosion research

Background:

• Ground control mesh is increasingly used in coal mines to manage roof and rib spall.
• This mesh creates additional surfaces that can accumulate rock and coal dust.
• Accumulated float coal dust, if not inerted, can increase dust explosion propagation potential.

Purpose of the Study:

• To assess the impact of ground control mesh on rock and float coal dust distribution in coal mines.
• To quantify potential dust accumulation on mesh surfaces.
• To develop methods for collecting representative dust samples from meshed areas.

Main Methods:

• Conducted an assessment of dust distribution in meshed coal mine entries.
• Estimated the additional coal and rock dust accumulation on ground control mesh.
• Developed and tested new methods for collecting dust samples from meshed surfaces.

Main Results:

• Ground control mesh can lead to increased accumulation of coal and rock dust.
• Existing dust sampling methods may be compromised by the presence of mesh.
• New sampling techniques were developed to address mesh interference.

Conclusions:

• Ground control mesh use necessitates evaluation of dust accumulation and explosion risk.
• Accurate dust sampling in meshed environments requires adapted methodologies.
• Further research is needed to ensure safety in mines utilizing ground control mesh.