General technical requirements for track‑type inspection instruments for coal mines
1Key Takeaways
This document applies to the manufacture and inspection of track-mounted inspection instruments for coal mines that are fixed on dedicated tracks using suspension, brackets, or seated mounting methods.
2Expert Interpretation
This article provides an in-depth analysis of the MT/T 1280—2025 standard for track-mounted inspection instruments used in coal mines, covering key aspects such as product classification, technical requirements, and testing methods, offering professional guidance for equipment selection and inspection.
Background and Technological Evolution of Standard Development
With the advancement of intelligent coal mine construction, the safety and reliability requirements for track-mounted inspection instruments, as key equipment to replace manual inspections, are increasing. The release of MT/T 1280—2025 fills the gap in general technical standards in this field. This standard, proposed by the China Coal Industry Association and drafted by organizations such as the National Mining Product Safety Marking Center Co., Ltd., will be implemented in 2025. It aims to standardize the design, manufacture, and inspection of inspection instruments to ensure safety in underground coal mine operations.
Standard Framework Comparison
| Dimensions | MT/T 1280—2025 | Relevant National/Industry Standards |
|---|---|---|
| Applicable Equipment | Rail-mounted Inspection Instrument for Coal Mines (Suspended/Supported/Sitting/Lying Type) | GB/T 3836 Series Explosion-proof Standards, MT 209 Communication Testing Standards |
| Protection Level | Not lower than IP54, IP65 for water-spraying environments | IP54 is a general requirement, IP65 is suitable for harsh environments |
| Functional Requirements | Methane collection, audio/video, temperature, smoke, collision avoidance, overspeed protection, one-button emergency stop, etc. | MT/T 1101 Methane power-off device, MT/T 530 Emergency interlock switch |
| Test methods | Clear environmental adaptability tests for low temperature, high temperature, damp heat, vibration, shock, transportation, etc. | Referencing GB/T 2423 series, MT 210, etc. |
Interpretation of key technical indicators
Standards for
Technical Terminology Analysis and Application Cases
Slope Parking
: This refers to the inspection instrument's ability to automatically stop and prevent slippage when encountering a power outage or malfunction on a slope. For example, in an inclined tunnel, once a power outage occurs, the equipment must brake reliably to prevent sliding and impact.Anti-collision
: This requires the use of non-contact anti-collision devices, supplemented by contact devices. In practical applications, ultrasonic or lidar can achieve non-contact detection, immediately braking when personnel or equipment enter the set range. One-button emergency stop interlocking: Emergency stop and interlocking are achieved via an emergency stop button or remote control, requiring manual reset for restart. During belt conveyor inspection, in the event of an accident such as belt tearing, the operator can remotely use a one-button emergency stop to prevent the accident from escalating. Implementation Recommendations Manufacturers should update their product designs according to this standard, focusing on meeting protection levels, functional requirements, and environmental adaptability tests. Purchasers should verify whether the equipment has the MA safety mark and explosion-proof mark, and verify its main technical indicators when selecting equipment. Inspection agencies should strictly conduct factory and type inspections according to the inspection items in Table 1 to ensure product compliance. For older equipment already in use, it is recommended to upgrade or phase it out according to this standard.