煤系软岩中抽水蓄能电站地下厂房大断面硐室支护设计  

Design of large-section chamber supporting for underground powerhouse of pumped storage plant in coal bearing soft rock stratum

作　　者：张沛顶 李福清 管增伦[4] 许国安[2,5] 苗梅 张照伟 邬敏 张凯 张朋[1] 刘永[1] ZHANG Peiding;LI Fuqing;GUAN Zenglun;XU Guo′an;MIAO Mei;ZHANG Zhaowei;WU Min;ZHANG Kai;ZHANG Peng;LIU Yong(Shanghai Datun Energy Co.,Ltd.,Peixian 221611,China;National Key Laboratory of Intelligent Construction and Health Operation of Deep Earth Engineering,China University of Mining and Technology,Xuzhou 221116,China;Yunlong Lake Laboratory of Deep Underground Science and Engineering,Xuzhou 221116,China;China Coal Energy Group Co.,Ltd.,Beijing 100120,China;School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou 221116,China;China Electric Power Development Research Institute Co.,Ltd.,Beijing 100053,China;China Coal Tianjin Design and Engineering Co.,Ltd.,Tianjin 300120,China)

机构地区：[1]上海大屯能源股份有限公司,江苏沛县221611 [2]中国矿业大学深地工程智能建造与健康运维全国重点实验室,江苏徐州221116 [3]深地科学与工程云龙湖实验室,江苏徐州221116 [4]中国中煤能源集团有限公司,北京100120 [5]中国矿业大学力学与土木工程学院,江苏徐州221116 [6]中电联电力发展研究院有限公司,北京100053 [7]中煤天津设计工程有限责任公司,天津300120

出　　处：《煤炭科技》2024年第3期68-74,共7页Coal Science & Technology Magazine

基　　金：中央高校基本科研业务费专项资金项目(2019XKQYMS19)。

摘　　要：为实现绿色低碳可持续发展,大屯能源股份有限公司龙东煤矿拟在埋深约300 m的煤系软岩地层中建设抽水蓄能电站,决定该项目可行性的关键问题之一是能否对主厂房大断面硐室进行经济有效的支护。为此,提出了基于规范和灰色关联度分析的支护设计方法。首先对该硐室的围岩稳定性进行分级,然后根据相关规范和工程经验提出4种支护备选方案,继而通过数值模拟对其支护效果进行对比分析,最后运用灰色理论的关联度模型综合支护效果和支护成本确定出技术经济效果最优的支护方案,从大断面软岩硐室的支护角度证明了在龙东煤矿建设抽水蓄能电站的可行性。该支护设计方法科学、可行、高效,可为煤系软岩中大断面硐室的支护设计提供参考。In order to achieve green,low-carbon and sustainable development,Longdong Coal Mine of Datun Energy Co.,Ltd.plans to build a pumped storage plant in coal bearing soft rock stratum with a burial depth of about 300 m.One of the key issues to determine the feasibility of the project is whether we can maintain effectively and economically the stability of the large-section chamber in main powerhouse.Therefore,this article proposed a supporting design method based on specifications and grey correlation analysis.Firstly,the stability of the surrounding rock of the chamber was graded,and then four alternative supporting schemes were proposed based on relevant specifications and engineering experience.Then,the supporting effects were compared and analyzed through numerical simulation.Finally,the grey theory correlation model was used to comprehensively analyze the supporting effects and supporting costs to determine the most technically and economically effective supporting scheme.From the supporting perspective of large-section soft rock chambers,the feasibility of constructing pumped storage plants in Longdong Coal Mine was demonstrated.This supporting design method was scientific,feasible,and efficient,and can provide reference for the supporting design of large-section chambers in coal bearing soft rocks.

关 键 词：煤系地层 抽水蓄能电站 大断面硐室 围岩分级 支护设计 

分 类 号：TV743[水利工程—水利水电工程]