A large sinkhole has torn through a residential area in Centurion, leaving residents isolated and frustrated. This marks the second sinkhole to form on the same street within a year, with the first still unrepaired. The City of Toronto has reported 63 sinkholes across the metro, raising concerns about infrastructure stability.
To shed light on the issue, Nomvelo Mkhize, Manager for Infrastructure at the Council for Geoscience elaborated on the situation. Mkhize explained that sinkholes develop over long periods due to the dissolution of dolomite rock underground, often exacerbated by human activities such as leaking pipes or poor stormwater drainage. Unlike potholes, which are shallow and road-specific, sinkholes form deep cavities and can collapse suddenly.
Mkhize noted that while South Africa has mapped dolomite-rich areas—key for sinkhole formation—preventing them requires costly geological studies. Repair timelines vary based on size, location, and funding, but proper rehabilitation can permanently fix the issue. Residents can check historical sinkhole data through the Council for Geoscience, though proactive municipal risk management remains critical.
With frustration mounting over delayed repairs, calls for better infrastructure maintenance and dolomite risk mitigation grow louder. Authorities urge residents to report hazards promptly as the city works to address the escalating problem.
