穿软弱膨胀岩层深竖井掘砌工艺优化  

Optimization of Deep Shaft Excavation Technology through Soft Expansion Rock

作　　者：朱笑颜 曾宪涛 马运亮 彭新华 ZHU Xiaoyan;ZENG Xiantao;MA Yunliang;PENG Xinhua(Beijing JCHX Mine Technology Research Institute Co.,Ltd.,Beijing 101500,China;School of Energy and Mining Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China;JCHX Mining Management Co.,Ltd.,Beijing 101500,China)

机构地区：[1]北京金诚信矿山技术研究院有限公司,北京101500 [2]中国矿业大学(北京)能源与矿业学院,北京100083 [3]金诚信矿业管理股份有限公司,北京101500

出　　处：《金属矿山》2024年第12期157-164,共8页Metal Mine

基　　金：国家重点研发计划项目(2016YFC0600802)。

摘　　要：针对深竖井在穿越软破膨胀岩层时遇到的掘砌难题,进行了深入研究和工艺优化。随着矿产资源开采深度的不断增加,深竖井的开挖日益广泛,而深竖井掘砌工艺是深竖井建设的重要环节,其复杂性主要体现在围岩控制和支护工艺上。本研究针对某矿进风井面临的软弱膨胀围岩遇水膨胀、高地应力和掘进速度慢等工程难题,提出了3个优化方案。利用FLAC^(3D)有限元软件对4个掘砌方案进行了数值模拟分析,探讨了掘砌过程中围岩和衬砌塑性区及位移场的变化规律,并最终提出了适用于现场的掘砌方案。并通过现场工程试验进一步验证了数值模拟结果,证明了优化方案的可行性和有效性。研究结果为深竖井穿越软弱膨胀岩层的相关研究和工程实践提供了技术支撑,确保了深竖井工程的安全和高效施工。The technological challenges encountered in deep shaft excavation through soft expansion rock are studied and optimized.With the increasing mining depth of mineral resources,the application of deep shaft is becoming more and more widespread.As one of the key technologies in construction,the complexity of deep shaft excavation is mainly reflected in sur-rounding rock control and support.In this paper,three optimization schemes are proposed to solve the problems of water expan-sion,high ground stress and slow excavation speed in the air inlet shaft of a mine.Employing the FLAC^(3D) finite element soft-ware,a numerical simulation analysis was conducted on four distinct excavation and lining schemes.The study investigated the patterns of variation in the plastic zones of the surrounding rock and the displacement fields during the excavation process,cul-minating in the proposition of an excavation and lining scheme suitable for on-site application.The numerical simulation results are further verified by an engineering example,which proves the feasibility and effectiveness of the optimization scheme.The re-search results provide technical support for the related research and engineering practice of deep shaft through soft broken rock,and ensure the safe and efficient construction of deep shaft project.

关 键 词：深竖井 软破岩层 掘砌工艺 数值模拟 

分 类 号：TD352[矿业工程—矿井建设]