标题：Displacement back analysis research on bolt-grouting supporting parameter of rock mass in jointed rock roadway
作者：Zhang, LW; Li, SC; Li, SC
作者机构：[Zhang, LW; Li, SC; Li, SC]Shandong Univ, Geotech & Struct Engn Ctr, Jinan 250061, Peoples R China.;[Zhang, LW; Li, SC; Li, SC] Shanghai Uni 更多
会议名称：5th International Conference on Fracture and Strength of Solids/2nd International Conference on Physics and Chemistry of Fracture and Failure Prevention
会议日期：OCT 20-22, 2003
来源：ADVANCES IN FRACTURE AND FAILURE PREVENTION, PTS 1 AND 2
关键词：roadway in jointed rock; bolt-grouting supporting; parameter of rock; mass; displacement back analysis algorithm; numerical method
摘要：The method of bolt-grouting supporting, grouting into surrounding rock mass by bolts in jointed rock mass roadway, is obtained wide application. However, it is difficult to determine rock mass parameter of bolt-grouting supporting. This paper begins with the displacement, which is measured easily in practice. The method of back analysis is adopted to calculate the equivalent mechanics parameters of bolt-grouting rock mass. In process of back analysis three mechanics models is supposed which are homogeneous elastic model, inhomogeneous elastic model and elastic-plastic model and corresponding algorithm is established. What's more, this paper discusses the stability of inverse algorithm and copes the problem of back analysis parameter probably instable with QR decomposed algorithm and singular value decomposed algorithm, which will be a theoretical base to determine the mechanics parameter of bolt-grouting supporting rock mass and to estimate the surrounding rock stability. In a word, the method is established to estimate mechanics parameters of bolt-grouting jointed surrounding rock mass, and some significant results are obtained, which are of reference for actual project.