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通过对西部含水软岩地层冻结井筒马头门衬砌结构内力监测,掌握了衬砌结构钢筋应力、混凝土应变、孔隙水压力等变化规律。利用现场监测进行了支护效果评价。以“强化支护、适当让压、刚柔结合”为支护理念,提出了“锚-注-喷”补强加固方案。通过支护效果评价证明了补强加固方案合理性。
Through the monitoring of the internal force of the frozen headquater lining structure in western soft rock formation with water-bearing rocks, the variation rules of steel bar stress, concrete strain and pore water pressure are mastered. The use of on-site monitoring of the support effect evaluation. To “strengthen the support, appropriate pressure, rigid and flexible combination” as the support concept, put forward the “anchor - Note - spray” reinforcement and reinforcement program. The rationality of strengthening and reinforcement scheme is proved through the evaluation of supporting effect.