Safety technical measures for opening construction?
3. Excavation methods and processes
The 1.0m opening is excavated using pneumatic picks and hand picks, and then the excavation method is adopted.
Process flow: shift handover → safety and quality inspection, acceptance → drilling and blasting → temporary support → initial spraying → top anchor → gangue removal → top anchor → repeated spraying → cleaning.
IV. Mechanical and electrical management
1. Cables must be hung neatly, and the distance between cable suspension points shall not exceed 1.5m. Cables and Feng Shui pipes should be hung on both sides of the tunnel respectively.
2. The equipment should be placed stably, with switches on the shelves and arranged neatly. It is strictly forbidden to sprinkle (spray) on electrical equipment (including cables) when dusting or spraying. It is strictly prohibited to install the equipment in a place exposed to water.
3. Electrical fitters must perform regular inspections and maintenance work, and all parts of the equipment must be fully tightened.
4. Drivers must carry their operating license with them. It is strictly prohibited to work without a license. They must operate in strict accordance with the regulations. They are not allowed to operate in violation of regulations. The equipment cannot be started frequently.
5. Strictly implement the power outage system. When inspecting and repairing electrical equipment, the power supply must be cut off, and a dedicated person should be assigned to guard it or a warning sign "No power is allowed when someone is working".
6. Relocation (maintenance) of electrical equipment, including cables, is strictly prohibited while power is on.
7. The power supply system must achieve "three no's", "four haves", "two balances", and "adhere to the lock-in of wind power and gas power".
8. It is strictly forbidden to throw away all kinds of protection.
10. Each terminal of electrical equipment must be regularly inspected and tightened.
11. Relevant provisions of Genzhong Machinery's [2014] "Electrical and Mechanical Transportation Work Standards and Assessment System" shall be strictly followed for other matters not covered.
5. Transportation
The tunnel opening is 10m, and the coal gangue generated during the construction is manually transferred to the No. 90 belt for transportation up the mountain (east) and transferred to the belt conveyor in the transportation lane of the old area. Out of the well; lay a 40T scraper conveyor in the 10m back tunnel, put the machine head on the belt of the primary mining transportation up the mountain (east), and install a P30 rake bucket machine at the tail to discharge coal gangue; construct 10m back according to the azimuth angle A second 40kw scraper conveyor is installed in the lane.
1. Coal gangue transportation route
Working face → Belt conveyor for transportation up the mountain (east) in the first mining area → Belt conveyor in the old area transportation lane → Main shaft coal storage → Ground.
2. Material transportation system
Ground warehouse → Main inclined shaft → Bottom pit → Track downhill → Track stone gate → Track uphill (east) in the first mining area → Rail-surface joint lane → Transportation in the first mining area goes up the mountain (east) → working face.
3. Safety measures for the use of scraper conveyors
(1) Drivers must undergo professional training, pass the exam and obtain a certificate before they can work with a certificate.
(2) Before working on the scraper conveyor, you must carefully check whether there are any obstacles at the head and tail of the machine, whether all protective covers are complete, and deal with any problems in a timely manner.
(3) Sound and light signals must be installed on the nose and tail of the aircraft and must be clear and reliable.
(4) Try to avoid starting the motor frequently, and generally start it without load.
(5) The head and tail of the scraper conveyor should be stabilized with Φ16mm×1.6m resin anchors, otherwise their use is strictly prohibited.
For more information about engineering/service/purchasing tender document writing and production to improve the bid winning rate, you can click on the official website customer service at the bottom for free consultation: /#/?source=bdzd