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俄罗斯各主要煤田均广泛使用无煤柱开采工艺,而使用最普遍的回采条带采准方式有以下两种:沿空掘巷和在采空区与采准巷道间先留煤柱,后随工作面同时开采。在适合的矿山地质条件下,还可采用沿空留巷重复使用的采准方式。这种方式能减少采准巷道的掘进工程量,改善通风条件和缩短回采条带的采准期限。然而,使用这种采准方式既很困难,又要耗用大量的木料和金属支架。为了降低使用沿空留巷开采回采条带工艺的材料消耗和用工量,莫斯科近郊煤炭科
In Russia, coal pillars are widely used in all major coalfields. There are two types of mining methods that are most commonly used: mining along the goaf and coal pillars between the goaf and the quarry, followed by Face mining at the same time. Under the suitable mine geological conditions, the recasting method of gob-side entry retaining can also be used. This approach can reduce the number of tunneling excavation work to improve the ventilation conditions and shorten the mining section of mining deadline. However, using this method of acquisition is both difficult and requires a large amount of wood and metal brackets. In order to reduce the material consumption and labor cost of the strip mining process using gob-side entry retaining, the Moscow Suburb Coal Branch