[Purposes] This research is conducted to exploret the roof movement law of double roadway arrangement in thick coal seam and the abutment pressure distribution mechanism of surrounding rock. [Methods] The roof cuttings of single roadway in belt channeling and return air channeling in Gucheng N1302 face were taken as the engineering research objects to achieve effective pressure relief... https://cosmeticssquadets.shop/product-category/necklaces/