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潞安矿务局王庄煤矿的进风立井和回风立井的净直径均为5.5m,进风立井深300.75m,回风立井深279.2m,两井穿过表土厚均为60m。根据提供的地质资料,表土段主要为粘土层、亚粘土层、砂土层和具有流动性的细砂层,其中细砂层有两层,一层厚1.4m,一层厚2.4m。表土段总涌水量为200m~3/h。经方案比较,两立风井均采用了上段普通沉井,下段淹水沉井的施工方法。 淹水沉井和普通沉井均采用泥浆护壁,液压金属滑模砌壁,导向木防偏和小木顶柱纠偏,导点测斜与灯光测斜仪测斜相配合的施工措施。两种沉井施工方法不同之处是破土机具与排渣机具不同,淹水沉井原设计采用高压水枪破土、压风排渣,而普通沉井则
Lu’an Mining Bureau Wangzhuang coal mine into the wind shaft and the vertical shaft diameter of the net are 5.5m, into the vertical shaft 300.75m deep, return shaft vertical deep 279.2m, the two wells through the topsoil are 60m thick. According to the geological data provided, the topsoil is mainly composed of clay, sub-clay, sand and fluid sand, in which there are two layers of fine sand with a thickness of 1.4m and a thickness of 2.4m. The total surface water inflow is 200m ~ 3 / h. After the program comparison, the two vertical shaft are used in the upper section of ordinary caisson, submerged submerged caisson construction methods. Both submerged caisson and common caisson adopt construction measures such as slurry retaining wall, hydraulic metal sliding mode wall, guiding wood deflecting and small wooden top post correcting, guiding inclinometer and lighting inclinometer inclinometer. The difference between the two sunk well construction methods is that the ground-breaking equipment is different from the slag-discharging equipment. The original design of flooding caisson uses high-pressure water gun to break ground and compress air to drain slag, while the ordinary caisson