论文标题:特征曲线法及其应用中的几个关键问题研究
Studies of Some Key Problems on the Characteristic Curve Method and Its Application
论文作者 孙海涛
论文导师 丁德馨,论文学位 硕士,论文专业 采矿工程
论文单位 南华大学,点击次数 115,论文页数 79页File Size4180k
2005-05-01论文网 http://www.lw23.com/lunwen_821730812/ 隧道;位移特征曲线;自适应神经模糊推理方法;支护时机;喷射混凝土衬砌
tunnel; displacement characteristic curve; adaptive neuro-fuzzy inference system; time for construction; shotcrete lining
本文就特征曲线法及其应用中的关键问题开展了如下研究: 1)采用数值模拟方法,通过分步卸载,对隧道围岩的位移特征曲线进行了数值模拟,获得了围岩的位移特征曲线。 2)采用数值模拟方法,通过分步加载,对喷射混凝土衬砌的位移特征曲线进行了数值模拟,获得了隧道喷射混凝土衬砌的位移特征曲线。 3)采用特征曲线法分析了在隧道掘进工作面布置测点,以该测点的量测位移来确定隧道喷射混凝土衬砌构筑时机的可行性。 4)对万—梁高速公路“马王槽”隧道围岩和喷射混凝土衬砌的位移特征曲线进行了数值模拟,获得了各自的位移特征曲线。 5)采用在掘进工作面布置测点的方法,对万—梁高速公路“马王槽”隧道各监测断面围岩和喷射混凝土衬砌的量测位移进行了综合分析,建立了隧道围岩位移特征曲线的影响因素与喷射混凝土衬砌构筑前监测点变形量之间的对应关系。 6)应用自适应神经模糊推理系统—ANFIS,对“马王槽”隧道各监测断面围岩位移特征曲线影响因素与喷射混凝土衬砌构筑前监测变形量之间的关系进行了集成,建立了预测喷射混凝土衬砌构筑时机的自适应神经模糊推理方法。
This thesis deals with the following aspects concerning some key problems on the characteristic curve method and its application.1) The tunnel displacement characteristic curve was obtained through numerical simulateion by step-by-step unloading.2) The shotcrete lining displacement characteristic curve was obtained through numerical simulateion by step-by-step loading.3) The characteristic curve method was used to analyse the feasibility of an approach that the measureing point was placed at the advance workspace of the tunnel and the measurement displaycement at this point was used to determine the time when the shotcrete lining could be constructed.4) The displacement characteristic curves of both the rock round the Mawang cao tunnel in Wan-Liang express way and its shotcrete linging were obtained through the numerical simulation.5) The measured displacements of the rock round all of the monitored sections of the Mawang cao tunnel and its shotcrete lining ,by placing the measuring point at its advance workface, were analysed. The relations between the influencial factors of tunnel displacement characteristic curve and the measured displacement before the construction of its shotcrete lining were established.6) The relations were integrated by using the ANFIS. The adaptive neuro-fuzzy inference method was established to predict the time when the shotcrete lining could be constructed.
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