The paper describes prediction, control and validation of face pressures, and special TBM features for the bored tunnels of the New MetroRail City Project, Perth, Australia. The selected EPB-TBM passed below a heritage bridge and the operational Perth Railway station in ground conditions consisting of fully saturated uniform sand combined with shallow overburden and a horizontal alignment radius of only 135m. Therefore, strict control of volume loss, TBM operations and ground movements was vital requiring continuous evaluation and adjustments to TBM operation parameters. The paper discusses the effectiveness of applied TBM face pressures and the used foam/polymer soil conditioning which was measured against achieved volume loss and the predicted range of ground settlements.
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机译：本文介绍了对澳大利亚新的Metrorail City Project的无聊隧道的面部压力的预测，控制和验证以及特殊的TBM功能。所选的EPB-TBM在遗产桥和地面条件下的操作珀斯火车站之下，由完全饱和的均匀砂组成，浅层覆盖层，水平对准半径仅为135米。因此，严格控制体积损失，TBM操作和地面运动至关重要，需要连续评估和调整TBM操作参数。本文讨论了应用TBM面压和使用的泡沫/聚合物土壤调节的有效性，该泡沫/聚合物土壤调节率测量的变量损失和预测的地面沉降范围。
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