About MINE GUARD • Project Mission & Scope
AI-Enabled Low-Cost Real-Time Mine Subsidence Monitoring, Prediction & Early Warning System for Indian Underground Coal Mines.
1. The Engineering Challenge in Indian Coal Mines
Underground coal extraction in India—both mechanized longwall mining and bord-and-pillar depillaring—induces significant subsurface strata movement. Uncontrolled roof sag, goaf falls, and surface subsidence troughs pose catastrophic hazards to underground miners and surface infrastructure (railway sidings, pipelines, roadways, and settlements).
The Critical Economic Barrier:
Existing subsurface strata monitoring stations imported from abroad cost between ₹1,50,000 and ₹4,50,000 per station. This high capital cost forces collieries to deploy sparse, isolated sensor clusters that fail to provide real-time spatial correlation across active panels.
2. The MINE GUARD Open-Architecture Solution
Engineered with multi-parametric sensors: BNO085 0.01° inclinometer, TI ADS1220 24-bit delta-sigma ADC for vibrating wire strain bridges, and sub-GHz LoRa (IN865 Band). Achieves a 30x cost reduction over commercial stations.
ESP32-S3 firmware maintains circular buffers (N=30) and on-device EWMA / Z-score filters. Automatically escalates telemetry transmission from 300s deep sleep down to 10s emergency burst upon detecting anomalous strata acceleration.
Drastically suppresses false alarms by requiring Pearson correlation agreement (r > +0.75) across adjacent sensor stations and multi-modal consistency between tilt slope, extensometer displacement, strain, and acoustic emissions.
Built directly around mandatory Coal Mines Regulations 2017 Regulation 112 (Strata Control and Monitoring Plan - SCAMP). Features digital shift handovers, immutable SHA-256 audit trails, and Form IV reporting.
3. Implementation Status & Engineering Truth Matrix
To maintain strict scientific credibility, MINE GUARD clearly distinguishes what is implemented in code from proposed future field work:
| Subsystem Capability | Engineering Status | Verification Method / Evidence |
|---|---|---|
| Next.js 16 Digital Platform (14 Operational Views) | IMPLEMENTED | 21 pre-rendered routes, Vitest suite (42 tests passing), Turbopack/Webpack production build. |
| Deterministic Strata Event Simulator (16 Nodes) | IMPLEMENTED | Mulberry32 PRNG seed engine with 8 realistic strata failure progression scenarios. |
| Hybrid Statistical Risk Engine & Anomaly Detection | IMPLEMENTED | Running MAD, robust Z-scores, EWMA rate-of-change, and Pearson cross-node correlation. |
| ESP32-S3 Firmware & Ingestion Pipeline | BENCH-TESTED | PlatformIO firmware with circular buffers, compact 20-byte serializer, verified via Postman collection. |
| Intrinsically Safe Ex 'i' Physical Colliery Deployment | PROPOSED | Designed under IS/IEC 60079-11; formal CIMFR Dhanbad / DGMS certification required prior to coal-face deployment. |