摘要
本文以岩体的全应力－应变曲线为基础，建立了反映岩体出现塑性破坏后强度降低特点的力学模型，得到了巷道围岩塑性区半径和应力的明确解答．通过与现有其它力学模型的比较证明．本文提出的巷道围岩塑性区半径计算公式更为合理可靠．有更广泛的适用性．
This paped Puts forward a elasto plastic strength softening mechanital model based on the stress-strain curve of rockmass to Calculate the plastic zone radius and stresses around a circle tunnel. It is demonstrated that the solutions in this peper are more rational and reliable than those from the other models such as Kastner's and Airey's so far.
基金
煤炭系统留学回国人员资助
关键词
软化岩体
巷道
塑性区
围岩
Strength softening
opening
tunnel
plastic zone
