【摘 要】
：
我国缺少在巨厚卵砾石层中采用普通施工方法掘进煤矿斜井井筒的成熟支护经验.结合伊犁一矿材料斜井和回风斜井的施工过程,设计了现场支护试验方案,对不含水和含水卵砾石层大
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我国缺少在巨厚卵砾石层中采用普通施工方法掘进煤矿斜井井筒的成熟支护经验.结合伊犁一矿材料斜井和回风斜井的施工过程,设计了现场支护试验方案,对不含水和含水卵砾石层大断面斜井井筒的多种支护方法进行了试验.研究结果表明,含水与不含水卵砾石层斜井井筒相比,其支架变形量和支护难度显著变大;架棚临时支护结合钢筋混凝土永久井壁支护是不含水卵砾石层大断面斜井井筒有效的支护方法;含水卵砾石层地压显现明显,采用超前支护、架棚临时支护和钢筋混凝土永久井壁支护相结合的方法可以实现围岩稳定.由试验推断,库仑和太沙基土压力理论用于计算卵砾石层围岩压力误差显著.
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