Proximity detection systems gap analysis for underground coal mining machines

Stage 2

The risk of collision between mining equipment and personnel in underground coal mines remains a critical safety concern due to restricted visibility and confined working conditions. To mitigate these risks, the mining industry has adopted Proximity Detection Systems (PDS) as an additional layer of protection. This project stage aimed to evaluate the current state of PDS technology, assess the gap between industry requirements and system capabilities, and provide recommendations to improve adoption and performance.

Through qualitative research, including interviews with mining personnel, the study examined factors such as system reliability, acceptance, training, integration, and legislative considerations. Key findings indicate that while PDS enhances safety, issues such as false alarms, system reliability, complacency, and training gaps hinder full adoption. Additionally, a lack of clear ownership and accountability between stakeholders affects implementation effectiveness.

This research provides a comprehensive gap analysis to assist the industry in selecting and refining PDS solutions suited to underground mining conditions. The findings and recommendations outlined in this report aim to inform future advancements in proximity detection technology, regulatory compliance, and best practices for safe mining operations.

Stage 1

One of the major hazards in an underground coal mine is the interaction between mining equipment and humans. This is the result of limited vision around underground equipment and the confined space within which the equipment operates. To address this hazard, various proximity detection systems have been developed.

This project stage evaluated different proximity detection systems available for use in underground coal mines. The scope of the project was to focus on interactions between the workforce with Continuous Miners, Shuttle Cars and LHDs. A testing programme was undertaken at an underground coal mine, which allowed testing without production interruptions.

During a two day workshop a suite of nine scenarios were developed. The scenarios represent the most common processes encountered in underground coal mines. The proximity detection systems were subjected to the developed scenarios and their performance was documented.

The detection zones of the different proximity detection systems were determined under normal operation, in the vicinity of an underground substation, detection pads at different heights, and multiple detection pads in zones.

The testing results provide a documented comparison of the different proximity detection system's performance, when subjected to the same set of scenarios. This will assist the underground coal mines to make a selection of the proximity detection system most suitable for their conditions.