摘要
以研究孔隙型含水岩层为条件,基于流固耦合原理,采用Comsol软件地球模块,建立了考虑一定围岩范围和深埋高水压岩层的平面应变井筒井壁力学分析数值模型,首先就基本数值模型的应力场和位移场与"包神公式"的解析分析公式进行了对比和相互的正确性验证;然后进一步研究了井壁外侧的水压力、井壁混凝土与围岩的剪切刚度比、开挖和支护的时间效应、锚杆等因素对围岩与井壁的力学特性的影响,图形化直观揭示了它们之间相互作用变化的真实规律,为高水压基岩段井壁设计提供参考。
Based on the study of porous rocky aquifers and mechanics principals of coupled soild and fluid, using the FEM software of Comsol, plain strain model of shaft lining considering a certain range surrounding rock under deep and high water pressure are set up. Firstly, numeral results of strain and stress are studied compared to analytic resolution of ＂Baoshen＂ theory, which gives verification for each other. Secondly, many parameters such as the thickness of lining wall, water pressure, shear stiffness ratio of lining concrete and surrounding rock, time effect of excavation and shoring, bolt effect etc. are studied for the influence on shaft bearing capacity, the interaction law between them for the real changes truth are graphically and intuitively revealed, which gives the reference for the design of shaft lining situated in rocky aquifer under high water pressure.
出处
《煤炭工程》
北大核心
2013年第1期15-18,共4页
Coal Engineering
