煤矿立井井塔设计与实践

Design and practice of shaft tower for coal mine

  • 摘要: 【目的及方法】结合我国矿井规模不断提高的现实背景,以门克庆矿井主立井井塔为例,介绍了提升能力大、提升高度高、建筑高度高的双提升井塔的建筑结构设计要点。【结果及结论】对比分析了井塔不同结构型式的优缺点,确定钢筋混凝土箱框结构作为该类井塔的结构型式;系统阐述了井塔平面及竖向布置原则以及在设计过程中需要考虑的因素;从楼层侧向刚度控制、大厅层结构设计等方面介绍了井塔上部结构设计要点,提出控制井塔楼层侧向刚度均匀变化的措施;针对冻融法施工的井筒,提出井塔应采用钢筋混凝土灌注桩基础,不仅可以确保井塔安全性,还可以节省工期,同时也给出了一些在布桩时的控制参数。

     

    Abstract: Against the backdrop of increasing mine scales in China, this paper takes the main shaft tower of Menkeqing Mine as an example to introduce the key architectural and structural design points of double-hoisting shaft towers, which feature high hoisting capacity, high lifting height, and significant building height. Firstly, the advantages and disadvantages of different structural types of shaft towers are compared and analyzed, leading to the selection of a reinforced concrete box-frame structure as the appropriate structural type for such towers. Secondly, the principles of plane and vertical layout of the shaft tower and the factors to be considered during the design process are systematically elaborated. Then, the key design points of the superstructure of the shaft tower are introduced from the aspects of lateral stiffness control of floors and the structural design of the hall floor, proposing measures to ensure uniform changes in the lateral stiffness of the tower floors. Finally, for shafts constructed using the freeze-thaw method, it is proposed that the shaft tower should adopt a reinforced concrete cast-in-place pile foundation, which not only ensures the safety of the shaft tower but also shortens the construction period. Additionally, some control parameters for pile arrangement are provided.

     

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