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十矿中区专用瓦斯回风巷受附近回采动压的影响较大,巷道曾多次扩修恢复,在巷道围岩中形成一个很大的松动圈,致使巷道基本上处于“裸体”状态,造成了中区戊组专回回风不畅,严重影响煤矿的安全生产。为了减少巷道反复维护时投入的人力、物力、财力,采用曲面D形管混凝土支架支护,对围岩的裂隙进行充填,增强其自身强度,从而达到了治理巷道变形的目的,改善了中区戊组专回的通风条件,降低风阻,消除由于通风不畅而造成瓦斯对采、掘活动的困扰,为十矿安全生产创造良好的条件。
The special gas return airway in the middle area of the 10th Mine is greatly affected by the dynamic pressure in the vicinity of the mining. The roadway has been expanded and restored many times, forming a large loose ring in the surrounding rock of the roadway, causing the roadway to be basically in “nudity” State, resulting in poor returns to the Central Special Group E group, seriously affecting the safety in coal mines. In order to reduce the manpower, material and financial resources invested in repeated roadway maintenance, the use of curved D-shaped tube support for concrete brackets to fill the cracks in the surrounding rock to enhance its own strength, so as to achieve the purpose of controlling the deformation of the roadway to improve the Central E group back to the ventilation conditions, reduce wind resistance, eliminate due to poor ventilation caused by gas mining, digging troubled activities for the safety of ten mines to create good conditions.