摘要
采用地应力椭球和地应力椭圆分析方法,结合实测的车集矿地应力结果,以及矿区地质资料、地应力测量中揭露的地质情况,研究原岩应力与巷道松动圈的关系.结果表明:在地应力作用下,不同的巷道走向将影响到其周边围岩的受力状况,随着地应力椭圆离心率的增大,巷道周围受力的不均匀性增加.走向一定的情况下,将应力椭圆视为围岩破碎带的形状,从而进行巷道断面形状的优化和支护参数的优选是合理可行的.
Based on the in-situ geo-stress data of Juji mine, and combined with the mine geological data and the geolog- ical conditions obtained in the geo-stress measuring process, the method of the stress ellipsoid and ellipse is used to study the relationship between in-situ rock stress and the roadway loose circle. The results indicate that： under the action of geo -stress, different roadway strike will affect the force condition of the surrounding rock; the non-uniformity of roadway force increases with the increment of stress ellipse eccentricity. To certain roadway strike, it is reasonable and feasible that the roadway cross-section shape and support parameters are optimized by regarding the geo-stress ellipse as the shape of rock fracture zone.
出处
《华侨大学学报（自然科学版）》
CAS
北大核心
2012年第2期195-200,共6页
Journal of Huaqiao University(Natural Science)
基金
国家高技术研究发展计划项目(2006AA11Z118)
国家自然科学基金资助项目(40872179)
