TBM试验台支撑推进节能系统设计与仿真分析

发布时间：2018-03-23 00:17

本文选题：TBM　切入点：支撑推进系统　出处：《工程设计学报》2017年03期 　论文类型：期刊论文

【摘要】：针对全断面硬岩隧道掘进机(hard rock tunnel boring machine,简称TBM)在撑靴以设定压力撑紧围岩后支撑推进系统存在较大流量损失的问题,设计出一种具有负载敏感、恒压控制和蓄能器辅助支撑功能的支撑推进(简称LSCPGT)系统。利用AMESim软件搭建了LSCPGT系统模型,仿真分析了LSDRGT系统在变推进负载下的压力流量响应,并对比分析了在支撑工况下LSCPGT系统和恒压控制泵型支撑(constant pressure gripper,CPG)系统,以及在推进工况下LSCPGT系统与负载敏感泵型推进(load-sensing thrust,LST)系统和定量泵型推进(ration thrust,RT)系统的压力流量响应.结果表明:LST系统和LSCPGT系统在推进过程中都没有流量损失;CPG系统在支撑工况下存在流量损失,而LSCPGT系统由于蓄能器的保压作用没有流量损失;相对于LST系统+CPG系统的支撑推进系统,LSCPGT系统在撑靴达到设定压力后效率至少可提高43.5%。所设计的LSCPGT系统在满足支撑推进要求的同时,避免了流量损失,具有较好的节能效果。
[Abstract]:Aiming at the problem that the hard rock tunnel boring machine (TBM) of full-section hard rock tunnel tunneling machine has large flow loss in the bracing propulsive system after bracing boots to set up the pressure to tighten the surrounding rock, a load-sensitive one is designed. The system of constant pressure control and supporting propulsive function of accumulator (LSCPGT). The model of LSCPGT system is built by using AMESim software, and the pressure flow response of LSDRGT system under variable propulsion load is simulated and analyzed. The LSCPGT system and the constant pressure control pump type pressure grippern system are compared and analyzed. The pressure and flow responses of LSCPGT system, load-sensing thrusttruning system and quantitative pump propulsion system under propulsion condition are also discussed. The results show that there is no flow loss in both the LSCPGT system and the LSCPGT system during the propulsion process. There is flow loss under the supporting condition, However, the LSCPGT system has no flow loss due to the pressure retention of the accumulator. Compared with the support propulsion system of CPG system of LST system, the efficiency of LSCPGT system can be improved at least 43.55.The designed LSCPGT system can not only meet the requirement of propulsive support, but also avoid the loss of flow, so it has a better energy saving effect.
【作者单位】：浙江大学流体动力与机电系统国家重点实验室;
【基金】：国家高技术研究发展计划(863计划)资助项目(2012AA041803) 国家重点基础研究发展计划(973计划)资助项目(2013CB035400)
【分类号】：U455.3

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