地下洞室围岩位移量测的优化布置  

Optimization of the Displacement Measuring in Surrounding Rock

作　　者：杨林德[1] 彭敏[1] 马险峰[1] 

机构地区：[1]同济大学地下工程系

出　　处：《同济大学学报（自然科学版）》1995年第2期129-133,共5页Journal of Tongji University:Natural Science

摘　　要：以常见的圆形和直墙拱形洞室为对象，借助边界元方法模拟计算的结果得出不同条件下地下洞室围岩中位移场的分布规律和泊松系数、杨氏模量、初始地应力分布、洞形和尺寸等因素的影响，然后根据使各测线位移量测相对误差为最小的原则，对位移量测仪表布置的优化方案提出了建议．与传统方法相比较，文中提出的方法有较强的理论基础，便于克服主观因素的影响．Based on the results gained from calculations by the boundary element method, the characteristics of displacement distributions around underground openings changing with Poissen's ratio,Young's modulus,initial earth stress distribution,type and size of openings are studied.After choosing thecriterion for judging the degree of relative errors caused by instrument reading,suggestions are put forward for optimizing instrtunent distribution around a circular or horse-shoe opening.

关 键 词：地下洞室 位移量测 优化布置 围岩 

分 类 号：TU457[建筑科学—岩土工程]