本文選題：TBM　切入點(diǎn)：支撐推進(jìn)系統(tǒng)　出處：《工程設(shè)計學(xué)報》2017年03期 　論文類型：期刊論文

【摘要】：針對全斷面硬巖隧道掘進(jìn)機(jī)(hard rock tunnel boring machine,簡稱TBM)在撐靴以設(shè)定壓力撐緊圍巖后支撐推進(jìn)系統(tǒng)存在較大流量損失的問題,設(shè)計出一種具有負(fù)載敏感、恒壓控制和蓄能器輔助支撐功能的支撐推進(jìn)(簡稱LSCPGT)系統(tǒng)。利用AMESim軟件搭建了LSCPGT系統(tǒng)模型,仿真分析了LSDRGT系統(tǒng)在變推進(jìn)負(fù)載下的壓力流量響應(yīng),并對比分析了在支撐工況下LSCPGT系統(tǒng)和恒壓控制泵型支撐(constant pressure gripper,CPG)系統(tǒng),以及在推進(jìn)工況下LSCPGT系統(tǒng)與負(fù)載敏感泵型推進(jìn)(load-sensing thrust,LST)系統(tǒng)和定量泵型推進(jìn)(ration thrust,RT)系統(tǒng)的壓力流量響應(yīng).結(jié)果表明:LST系統(tǒng)和LSCPGT系統(tǒng)在推進(jìn)過程中都沒有流量損失;CPG系統(tǒng)在支撐工況下存在流量損失,而LSCPGT系統(tǒng)由于蓄能器的保壓作用沒有流量損失;相對于LST系統(tǒng)+CPG系統(tǒng)的支撐推進(jìn)系統(tǒng),LSCPGT系統(tǒng)在撐靴達(dá)到設(shè)定壓力后效率至少可提高43.5%。所設(shè)計的LSCPGT系統(tǒng)在滿足支撐推進(jìn)要求的同時,避免了流量損失,具有較好的節(jié)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.
【作者單位】： 浙江大學(xué)流體動力與機(jī)電系統(tǒng)國家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家高技術(shù)研究發(fā)展計劃(863計劃)資助項目(2012AA041803) 國家重點(diǎn)基礎(chǔ)研究發(fā)展計劃(973計劃)資助項目(2013CB035400)
【分類號】：U455.3

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