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旧梦's Documentation and Knowledge Base

website·Indexed 31 days ago

https://1002.work

A personal knowledge base and documentation site by full-stack engineer 旧梦. The site contains a diverse collection of resources, including coal mine safety and gas management exam question banks (2023-2026), technical guides for Windows LTSC2019 on X79 platforms, Bilibili video embedding snippets, and various media links.

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What's inside 旧梦

  1. Overview of Docusaurus core features

    Docusaurus is designed for ease of installation and rapid deployment. It allows developers to focus on content creation by managing the underlying site structure (such as placing documentation in a dedicated docs directory) and leverages React to allow for the extension and customization of site layouts, including shared headers and footers.

  3. Coal Mine Safety Production Principles and Policies

    The fundamental principles for coal mine safety production in China are 'Safety First, Prevention First, and Comprehensive Governance' (安全第一，预防为主,综合治理). When a conflict arises between production and safety, safety must always take priority.

  4. Legal and administrative safety requirements for mining enterprises

    Administrative and legal constraints for mining operators:

    • Safety Responsibility System: This is the fundamental system that ensures the implementation of all other safety regulations.
    • Hazard Disclosure: Employers must truthfully inform employees of the dangerous factors present at their workstations. They are strictly prohibited from entering into 'life-and-death contracts' (生死合同) or similar agreements to waive liability.
    • Facility Integration: Safety facilities for construction projects must be designed, constructed, and put into operation simultaneously with the main project.
    • Supervision: Coal mine safety supervision agencies operate independently and are not subject to illegal interference from any organization or individual.
    • Penalties: Violating safety management regulations that result in major casualties or serious consequences can lead to imprisonment (typically 3 years or less, or 3 to 7 years for particularly severe cases).

  5. Windows 10 LTSC 2019 Characteristics for X79 Hardware

    Windows 10 LTSC 2019 is recommended for X79 platforms due to:

    • Low Resource Overhead: Removes App Store, UWP, and Cortana. Idle memory usage is typically 1.4-2.3G (vs 2.5-3.5G for Pro), making it ideal for VMs and video editing.
    • Stability: No forced feature updates (only security patches), reducing the risk of BSODs on older Chinese X79 boards.
    • Hardware Support: Supports up to 2TB of RAM.

    Caveat: Original LTSC 2019 does not include the Edge browser; you must manually install Chrome or Edge after setup.

  6. Risk management and hazard identification concepts

    Core concepts for safety risk management:

    • Risk vs. Hazard: Risk and hazard sources are distinct. A hazard source does not necessarily evolve into an accident hazard.
    • Risk Grading: The purpose of risk grading is to achieve effective control of risks.
    • Risk Control: Risk control measures must be verified; enterprises cannot simply assume risk is reduced without verification.
    • Risk Levels: A 'Level 4 (Blue)' risk is not considered 'absolutely safe'.

  7. Download Windows ARM64 Architecture Images

    ISO images for Windows 11 and Windows 10 specifically for ARM64 architecture are available for download via ed2k and Magnet links.

    ARM64 ISOs

    • Windows 11 23H2: SW_DVD9_Win_Pro_11_23H2_Arm64_ChnSimp_Pro_Ent_EDU_N_MLF_X23-59518.ISO | SHA1: AB04EA5C8A3948CD184221E79AFCA43E92672866
    • Windows 11 22H2: SW_DVD9_Win_Pro_11_22H2_64ARM_ChnSimp_Pro_Ent_EDU_N_MLF_X23-12755.ISO | SHA1: AD8F1DF74A45A0788B53C59B916E9D69F8E1D544
    • Windows 11 21H2: SW_DVD9_Win_Pro_11_21H2_64ARM_ChnSimp_Pro_Ent_EDU_N_MLF_-2_X22-82731.ISO | SHA1: A2C9C4477F9E19F4E0180CAF04780024E4BE6F8E
    • Windows 10 22H2 (Jan 2023): SW_DVD9_Win_Pro_10_22H2.3_64ARM_ChnSimp_Pro_Ent_EDU_N_MLF_X23-36949.ISO | SHA1: 89B311A99EACE51345FD8C032412F5BD3133D729

  8. Set ventilation and infrastructure distance requirements

    Specific distance and height requirements for mine infrastructure:

    • Local Ventilation Fans: Must be installed at a height of at least 0.3m from the roadway floor.
    • Gas Extraction Pipelines: Must be at least 0.3m above the ground (except for pipes left at the working face).
    • Surface Safety: Wood yards, gob piles, and ash fields must be at least 80m away from the intake shaft. Wood yards and gob piles must be at least 50m apart.

  9. Implement coal mine ventilation and gas safety requirements

    Safety standards for ventilation and gas management include:

    • Auxiliary Fans: The installation of auxiliary ventilation fans underground is strictly prohibited in mines prone to coal/rock and gas (or CO2) outbursts.
    • Air Volume: The actual air supply at underground work locations must be no less than the required air volume.
    • Monitoring: Main ventilation fans must have monitoring systems to track operating status, air volume, and air pressure in real-time.
    • Gas Inspection: Gas inspectors must carry both portable methane detection alarms and optical methane detectors when going underground.
    • Gas Drainage: Mines with gas drainage must have dedicated teams with staffing that meets drainage requirements.

  10. Coal mine fire prevention and emergency response

    Guidelines for managing fire risks and emergencies in coal mines:

    • Fire Fundamentals: A fire requires three elements: a heat source, combustible material, and oxygen.
    • Self-Combustion Risks: Areas prone to spontaneous combustion include goafs (mined-out areas), within coal pillars, and roof coal in roadways.
    • Prevention Techniques: Includes optimizing development/mining and ventilation systems, preventing air leakage, preventive grouting, and using chemical inhibitors.
    • Extinguishing Methods:
      • Direct Extinguishing: Using water, sand, or fire extinguishers.
      • Indirect/Combined: Using isolation (sealing) or comprehensive methods when direct methods are ineffective, dangerous, or uneconomical.
    • Emergency Response: Personnel must evacuate based on emergency drill plans and rescue protocols. In outburst-prone mines, refuge chambers must be connected to compressed air and water lines with a rated protection time of at least 96 hours.

  11. Mining Area Refuge Station Requirements

    Mining areas with outburst-prone coal seams must be equipped with refuge stations meeting the following criteria:

    • Capacity: Must accommodate at least 15 people, with a minimum area of 0.5m² per person.
    • Dimensions: Indoor net height must not be less than 2m.
    • Equipment: Must be equipped with a sufficient number of isolation-type self-rescuers.
    • Life Support: Must provide sufficient drinking water and air supply facilities, with a minimum air supply of 0.3m³/min per person.

  12. Underground Mine Evacuation and Survival Procedures

    Safety protocols for underground emergencies:

    • Water Inrush: If lighting and signs are destroyed, evacuate toward the surface following the direction of the airflow.
    • Gas/Coal Outburst: Immediately don an isolating self-rescuer and evacuate toward the shaft following the fresh airflow.
    • Refuge Chambers: Before entering a refuge chamber, leave clear markers outside (e.g., lamps, clothing, tools). Permanent refuge chambers are NOT for general work breaks.
    • Collapse/Roof Fall: If trapped in a dead-end tunnel or working face, do not attempt to dig out blindly; follow established safety protocols.
    • Self-Rescuers: All underground coal mines must provide self-rescuers with a rated protection time of at least 30 minutes. Isolating self-rescuers are effective regardless of external oxygen concentration or toxic gas presence.