地下水力封洞库群施工通风技术研究

发布时间：2018-05-01 13:14

本文选题：水力封 + 地下洞库群　；参考：《西南交通大学》2013年硕士论文

【摘要】：利用地下水力封洞库群储备石油及其产品现已成为世界各国主要的一种储备方式：地下水力封洞库群开挖断面大,洞库纵横交错成网状等特点必将会对施工带来许多问题,尤其是在施工通风过程中且国内外少有类似经验可以借鉴：本文以某地下水力封LPG洞库群第四阶段(施工高峰期)通风方案为依托,主要研究了以下4方面的内容并得到相应结论,研究成果可为类似工程起到借鉴和指导作用： 1.通过对国内外相关施工通风安全卫生标准的类比并根据类似工程的施工经验,确定了地下洞库施工通风空气安全卫生标准；通过对相关通风方式的查阅并结合类似工程施工通风经验,对地下水力封洞库群施工通风方式的选择应注意的问题作了说明。 Z对施工高峰期间洞库群需风量计算、漏风量计算,沿程风压和局部风压损失计算,验证拟定方案通风设备性能(风量和风压)是否满足洞库群通风的需要。计算表明在风在良好的管理和布置条件下,施工高峰期间通风设备性能(风量和风压)基本能满足库群施工通风的需要。 3.建立丙烷洞库群通风计算模型,通过三维数值模拟和应用网络通风理论,经过FLLENT软件计算得到丙烷洞库群的风速和污染物浓度的分布,从而判定洞库内空气是否满足地下洞库施工通风空气安全卫生标准。通过数值模拟计算发现,在对已修建完毕的洞库采取封堵措施后,整个丙烷洞库群的风速和污染物浓度满足标准中的要求。 4.建立了15组风仓(GAMBIT有限元数值模型,通过FLUENT软件进行模拟计算,得到了不同风仓尺寸和风机布置形式对轴流风机效率的影响规律并确定了轴流风机效率最大时的风仓尺寸和风机布设形式。计算结果表明,在风仓高度固定为9m的条件下,风仓长度取30m、宽度取10m时,风仓两侧的风机效率最高,因此可确定风仓的最佳尺寸；另外,在此基础上风仓中间不设置隔板,风仓每侧风机分列布置且风机间横向和竖向间距都为2m及风机间不设置隔板时,可得到最佳合理的轴流风机效率。
[Abstract]:Taking advantage of the characteristics of underground water sealing cavern reservoir group to store oil and its products has become one of the main storage methods in the world: the excavation section of underground water force seal hole reservoir group is large and the tunnel reservoir is crisscrossed into a network, which will inevitably bring many problems to the construction. Especially in the process of construction ventilation and few similar experience at home and abroad can be used for reference: this paper is based on the ventilation scheme of the fourth stage (construction peak period) of a groundwater force seal LPG cavern group. This paper mainly studies the following four aspects and draws the corresponding conclusions. The research results can be used for reference and guidance for similar projects: 1. Based on the analogy of relevant construction ventilation safety and hygiene standards at home and abroad and according to the construction experience of similar projects, the ventilation and air safety and sanitation standards for underground cavern construction are determined. By consulting the relevant ventilation modes and combining with the construction ventilation experience of similar projects, the paper explains the problems that should be paid attention to in the selection of ventilation modes in the construction of underground water force seal cavern group. Z is used to calculate the air volume, air leakage, wind pressure and local wind pressure loss of the tunnel reservoir during the construction peak period, to verify whether the ventilation equipment performance (air volume and wind pressure) of the proposed scheme can meet the ventilation needs of the tunnel reservoir group. The results show that under the condition of good wind management and arrangement, the ventilation equipment performance (air volume and wind pressure) can basically meet the needs of the construction ventilation of the reservoir group during the construction peak period. 3. The ventilation calculation model of propane cavern group was established. The distribution of wind speed and pollutant concentration of propane cavern group was calculated by using FLLENT software through three-dimensional numerical simulation and network ventilation theory. Therefore, it is determined whether the air in the cavern meets the safety and hygiene standards of ventilation and air in underground cavern construction. Through numerical simulation, it is found that the wind speed and pollutant concentration of the whole propane cavern group meet the requirements of the standard after the sealing measures have been taken for the constructed cavern. 4. A finite element numerical model of 15 groups of wind bunkers was established and simulated by FLUENT software. The effects of different air bin size and fan layout on the axial fan efficiency are obtained and the wind bin size and fan layout form are determined when the axial fan efficiency is maximum. The calculation results show that when the height of the air chamber is fixed to 9 m, the fan efficiency on both sides of the air chamber is the highest when the length of the air chamber is 30 m and the width is 10 m, so the optimum size of the air bin can be determined; in addition, no partition is provided in the middle of the air chamber on this basis. The optimum axial fan efficiency can be obtained when the wind bin is arranged separately and the horizontal and vertical spacing between the fans is 2 m and the partition is not set in the fan room.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU94;TE972.2

【参考文献】