结合洛宁抽蓄对地下厂房机组混凝土入仓方式分析

Analysis of concrete entering of the underground station units construction based on the Luoning Pumped Storage Power Station

摘要

抽水蓄能电站地下厂房空间有限、四周封闭，尤其机组段结构复杂、通道受限，其混凝土工程施工难度大，施工方案不易制定，其中入仓方式是浇筑的重要环节，选择不当会造成功效低下、浪费资源。结合在建的洛宁抽蓄厂房混凝土施工经验，通过对厂房结构剖析分层、各层特征分析和适用范围内的设备性能分析，并根据近年施工方法和设备使用的改进、发展趋势，最终基于各部位具体情况一一对应选择性能适用、搭配合理的设备组合，确定最佳入仓方式结果。总体上认为：蜗壳以下以地泵和桥机吊罐为主，蜗壳以上尽量使用天泵入仓是科学合理的入仓方式。机组每台各层不尽相同，实施前应密切联系具体环境条件灵活选择；论述结果和过程提供了有效参考和深入分析、综合确定的思路方法。

Abstract

The underground powerhouse of a pumped storage power station is typically characterized by confined spaces and fully enclosed surroundings. In particular, the turbine section features a complex structural layout and restricted access routes, posing significant challenges for concrete construction and complicating the formulation of construction plans. Among these, the method of concrete placement is a critical step during pouring. Improper selection can lead to inefficiencies and resource wastage. Drawing on the concrete construction experience of the Luoning pumped storage power station, this study analyzes the sectional structure and characteristics of each layer within the powerhouse, evaluates the performance of applicable equipment, and considers recent advancements and trends in construction techniques and equipment utilization. Based on the specific conditions of each section, optimal combinations of equipment were selected to determine the most efficient concrete placement method. Overall, it is deemed both scientific and practical to adopt ground pumps and bridge cranes with concrete buckets for sections below the spiral case, while tower cranes are recommended for sections above it. As each layer of the powerhouse units varies, careful consideration of specific site conditions is necessary for flexible implementation. The findings and method ologies presented offer valuable references and systematic approaches for the analysis and determination of concrete placement strategies in similar projects.

关键词

抽水蓄能 / 地下厂房 / 混凝土入仓 / 分层分块 / 混凝土泵 / 吊罐

Key words

pumped storage power station / underground powerhouse / concrete placement / sectional construction / concrete pump / concrete bucket

Author summay

秦 宇(1981—), 男, 高级工程师, 项目经理, 硕士, 主要从事水利水电施工和汛期应急抢险研究。E-mail: [e-mail]