地下洞室群施工通风方案模拟分析  

Simulation analysis of ventilation scheme for underground cavern group construction

作　　者：唐子龙[1] 于家豪 付红刚 邓洪 李沛 段荣洁 TANG Zilong;YU Jiahao;FU Honggang;DENG Hong;LI Pei;DUAN Rongjie(Sinohydro Bureau 7 Co.,Ltd.,Chengdu 611730,Sichuan,China;State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China)

机构地区：[1]中国水利水电第七工程局有限公司,四川成都611730 [2]天津大学水利工程仿真与安全国家重点实验室,天津300072

出　　处：《水利水电技术(中英文)》2024年第S2期416-420,共5页Water Resources and Hydropower Engineering

摘　　要：抽水蓄能电站地下洞室群爆破施工产生大量炮烟、粉尘等污染物,同时由于厂房三期施工阶段各洞室纵横交错、结构复杂,粉尘的排放规律尚不明确。为了评价初设通风方案的通风效果,采用计算流体力学软件Fluent对地下厂房爆破通风过程进行三维非稳态气固两相流数值模拟,分析了厂房内部风流场分布规律和粉尘在洞室群内的动态迁移规律。结果表明:厂房内部风流场主要包含射流区、贴壁附流区、涡流区、回流区等部分,涡流区及风管射程有限是导致粉尘回旋滞留的主要原因。最后对初设通风方案提出了优化建议。The blasting construction of underground caverns of pump-generator plant produces a large number of pollutants,such as gun smoke and dust,and the dust emission law is not clear due to the crisscrossing and complex structure of each cave in the construction stage of the third phase of the plant.In order to evaluate the ventilation effect of the initial ventilation scheme,this paper uses the computational fluid dynamics software Fluent to perform a three-dimensional unsteady gassolid two-phase flow numerical simulation of the blasting ventilation process of the underground plant,analyzes the distribution law of the internal wind flow field and the dynamic migration law of dust in the cavern group,The result show that the internal airflow field of the factory mainly includes jet zone,wall attached flow zone,vortex zone,reflux zone,etc.The limited range of vortex and air duct is the main reason for dust retention and whirlwind,and puts forward optimization suggestions for the initial ventilation scheme.

关 键 词：施工通风 数值模拟 Euler-lagrange两相流 洛宁抽水蓄能电站 

分 类 号：TV213.4[水利工程—水文学及水资源]