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📘 RFC‑052: RSADI‑Coal — Industry Extension to RSADI Core#

A Resonance Structural Awareness Dimensional Interface for Underground Coal Mines

Internet‑Draft                                             Triadic Frameworks
Intended status: Standards Track                               January 2026
Expires: TBD
 
          RFC‑052: RSADI‑Coal — Coal Industry Extension
                    draft-rsadi-coal-00

Abstract#

This document defines RSADI‑Coal, a coal‑industry‑specific extension to the Resonance Structural Awareness Dimensional Interface (RSADI).
RSADI‑Coal specifies additional data fields, behaviors, and safety semantics required to apply RSADI in underground coal mining environments, including:

  • methane and CO sensing
  • roof and floor strata characterization
  • pillar load and roof convergence
  • equipment vibration signatures
  • collapse vectors and ignition risk
  • resonance‑aware evacuation routing

RSADI‑Coal builds on the RSADI Core data model and transport bindings without altering core invariants.

Status of This Memo#

Standard Internet‑Draft boilerplate (work in progress, subject to change, not yet a standard).

Table of Contents#

  1. Introduction
  2. Terminology
  3. Relationship to RSADI Core
  4. Coal‑Specific Data Extensions
  5. RSADI‑Coal Message Semantics
  6. Evacuation and Clarity Gradient Semantics
  7. Node Roles and Mesh Behavior in Coal Mines
  8. Security Considerations
  9. Safety Considerations
  10. Privacy Considerations
  11. IANA Considerations
  12. References
  13. Acknowledgments

1. Introduction#

Explains:

  • why underground coal mines are a natural RSADI domain
  • how resonance, clarity, drift, and structural stress map to coal mining hazards
  • the need for standardized coal‑specific extensions so vendors, operators, and regulators can interoperate safely

States that RSADI‑Coal is normative for any RSADI deployment in coal mines.

2. Terminology#

Defines coal‑specific terms:

  • Seam
  • Pillar
  • Roof Strata / Floor Strata
  • Convergence
  • Refuge Chamber
  • Belt Entry
  • Return / Intake Airway
  • Ignition Risk
  • Collapse Vector

Also references RSADI Core terms (clarity, drift, zone, node, mesh).

3. Relationship to RSADI Core#

Clarifies:

  • RSADI‑Coal extends RSADI Core objects via extensions.coal blocks
  • RSADI‑Coal does not change core field meanings or ranges
  • RSADI‑Coal is compatible with all RSADI Core transports (HTTP/JSON, MQTT, etc.)

References the core schemas and shows how coal schemas plug in.

4. Coal‑Specific Data Extensions#

Normatively binds the previously defined schemas:

  • CoalZoneExtension
  • CoalFieldSampleExtension
  • CoalNodeDescriptorExtension
  • CoalAlertExtension
  • CoalEvacRouteExtension

Each subsection:

  • names the JSON Schema
  • describes when it MUST / SHOULD be used
  • explains field semantics (e.g., methane_ppm, roof_convergence_mm, pillar_load_kpa)

Example:

RSADI‑Coal deployments MUST populate extensions.coal.methane_ppm on any field sample taken in gassy seams.

5. RSADI‑Coal Message Semantics#

Defines how coal extensions affect interpretation:

  • how methane_ppm and co_ppm influence composite risk
  • how roof_convergence_mm and pillar_load_kpa influence stress_hint
  • how equipment_vibration_signature interacts with resonance coupling detection
  • how collapse_vector is computed and propagated in alerts

Specifies thresholds and recommended mappings (informative, not prescriptive).

6. Evacuation and Clarity Gradient Semantics#

Defines:

  • how clarity gradients are computed in coal mines (gas + stress + ventilation + dust)
  • how CoalEvacRouteExtension annotates routes with refuge chambers, hazard zones, and ventilation paths
  • how wall‑mounted and wearable nodes should interpret evacuate, no‑entry, and refuge states

Normative statements for:

  • route suggestion behavior under rapidly degrading clarity
  • fallback to refuge when all routes exceed risk thresholds

7. Node Roles and Mesh Behavior in Coal Mines#

Defines coal‑specific node roles:

  • wall-mounted
  • wearable
  • equipment-mounted
  • refuge-chamber

Specifies:

  • expected capabilities per role (sensing, comms, power)
  • mesh behavior in partial collapse scenarios
  • minimum behavior for intrinsically safe nodes

8. Security Considerations#

Covers:

  • integrity of safety‑critical data (alerts, routes, gas readings)
  • mesh poisoning and spoofed nodes
  • authentication and authorization for control room systems
  • secure firmware update requirements for coal nodes

9. Safety Considerations#

Focuses on:

  • avoiding over‑reliance on RSADI‑Coal (must complement, not replace, existing safety systems)
  • fail‑safe behavior on data loss or mesh partition
  • conservative defaults when clarity or gas data is missing
  • human‑factors considerations for miners using wearable nodes

10. Privacy Considerations#

Discusses:

  • handling of miner location and movement data
  • retention of historical exposure and evacuation traces
  • anonymization for analytics vs. incident investigation

11. IANA Considerations#

If needed:

  • registers an RSADI‑Coal media type (e.g., application/rsadi-coal+json)
  • registers a URN namespace for coal zones (e.g., urn:rtt:zone:coal:...)

12. References#

  • Normative: RSADI Core RFC, JSON Schema, HTTP, UUID, ISO‑8601
  • Informative: Coal safety standards, MSHA guidance, TriadicFrameworks coal doc

13. Acknowledgments#

Credits contributors, miners, engineers, and reviewers.

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