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为了给水工地下洞室围岩稳定分析计算提供合理可靠的地应力荷载,使支护结构设计建立在安全、经济的基础上,本文以实测地应力资料为依据,用数理统计方法,建立多元逐步回归方程式,通过逐步回归计算,优选出形成初始地应力场的重要因素,再通过有限元方法计算,求得区域初始地应力场和位移场。本法求解精度较高,解答具有唯一性。文中对计算方法、步骤、主要计算公式、计算成果分析均作了介绍,并附有计算实例,可供研究计算这类问题时参考。本文介绍的计算方法,已编制成TQ-16机ALGOL-60语言电算程序,可供使用。
In order to provide reasonable and reliable ground stress loads for stability analysis of surrounding rock of hydraulic tunnels, the design of support structures is based on safety and economy. Based on the measured ground stress data, this paper uses mathematical statistics methods to establish multivariate foundations. Stepwise regression equations, through stepwise regression calculation, optimize the formation of the initial stress field of the important factors, and then calculated by the finite element method to obtain the region of the initial stress field and displacement field. This method has high accuracy and the solution is unique. In this paper, the calculation methods, steps, main calculation formulas, and calculation results analysis are introduced, and examples of calculations are included, which can be used for reference when calculating and calculating such problems. The calculation method introduced in this paper has been compiled into the ALGOL-60 language computer program for TQ-16 machine, which is available for use.