(4) Maintained at least 6 feet wide [with some exceptions where no less Height is provided, MSHA may require a stretcher test where 4 personsĬarry a miner through the area in question on a stretcher When there is a need to determine whether sufficient Mine roof, excluding the thickness of any roof support, except that theĮscapeways shall be maintained to at least the height of the coalbed,Įxcluding the thickness of any roof support, where the coalbed is less (3) Maintained to at least a height of 5 feet from the mine floor to the (2) Clearly marked to show the route and direction of travel to the (1) Maintained in a safe condition to always assure passage of anyone, Not end at a common shaft, slope, or drift opening, except that multipleĬompartment shafts or slopes separated by walls constructed of noncom-īustible material may be used as separate and distinct passageways. (c) The two separate and distinct escapeways required by this section shall Removal, they shall begin at the location of the last loading point. Projected location for the section loading point. (2) During equipment installation, these escapeways shall begin at the To the escape shaft or slope facilities to the surface. Removed, continuous to the surface escape drift opening or continuous (1) Escapeways shall be provided from each working section, andĮach area where mechanized mining equipment is being installed or Least two separate and distinct travelable passageways shall be designatedĪs escapeways and shall meet the requirements of this section. § 75.380 Escapeways bituminous and lignite mines. [ESCAPEWAY REQUIREMENTSâNUMBER, LOCATION, SIZE, ¢ responsible person duties during emergency evacuations (p. ¢ escapeway requirementsânumber, location, size, conditions (p. Topics covered in the following pages include They also require certification that training has beenĬompleted as well as impose record keeping requirements.ġ30 IMPROVING SELF-ESCAPE FROM UNDERGROUND COAL MINES Vide the training and the subject areas that need to be covered by Regulations mandate which min-Įrs must be trained how much training is required who may pro. Training in the United States is regulated by the Mine Safety and ![]() Refresher training task training and hazard training. Includes new miner training experienced miner training annual ¢ 30 CFR § 48 sets forth training and retraining of miners which ![]() Tary to these standards also are set forth in this part. Mandatory in each underground coal mine subject to the Federal ¢ 30 CFR § 75 sets forth safety standards compliance with which is Lations on mine emergencies and training. He text in this appendix is excerpted from the Code of Federal Regu. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages. Experiments show that the proposed method can find good escape routes efficiently and can be used in the escape-route planning of large and medium underground coal mines.Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. In addition, when a small part of the mine tunnel network changes, the system may fix the optimal routes and avoid starting a new processing procedure. We use max-min ant system method to optimize the meeting strategy of ants and improve the performance of the ant algorithm. We proposed a tunnel network zoning method to improve the searching efficiency of the ant algorithm. Then an improved ant algorithm is designed and used to find good escape routes. At first, six factors which influence escape difficulty are evaluated and a weight calculation model is built to form a weighted graph of. ![]() Based on the improved ant algorithm, we proposed a new escape-route planning method of underground mines. When a mine disaster occurs, to lessen disaster losses and improve survival chances of the trapped miners, good escape routes need to be found and used.
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