中文摘要：

针对深埋破碎、富含水岩层中井筒关键部位破坏特点,提出了塑性区半径理论-经验修正公式,通过与实测塑性区范围对比,结合数值模拟研究了基于富含水岩层内粘聚力为零时,在不同内摩擦角条件下围岩塑性区变化,提出了＂锚杆注浆＋锚网喷＋薄弱处锚索补强＋U型钢支护＋反底拱混凝土＂联合锚杆的支护对策。经现场证明：井筒拱顶下沉、两帮收敛值及底鼓量分别减少了7.9mm、5mm、2mm,围岩塑性区控制在1.8m范围内,确保了支护体系的整体支护能力,保证了斜井施工安全。

英文摘要：

According to the breakage characteristics of shaft key positions in deep - buried crushing and water - rich strata, the paper put forward the theory - empirical remedy formula, studied the plastic zone range variation with simulation under different internal friction angle assuming the internal cohesion of water - rich strata is O, through the comparison with the measurement of plastic zone range, and proposed a support scheme of ＂bolt - grouting ＋ bolt - mesh - shotcreting ＋ cable reinforcement at weak point ＋ U type steel ＋ inverted arch concrete＂. The practices showed that, the settlement of vault reduced 7. 9mm, the convergence of two - sides reduced 5mm, the floor heave reduced 2mm and the plastic zone was controlled within 1. 8m. The safety of shaft construction was ensured.