摘要
为研究采空区中的高水充填材料的活动规律,利用自行设计、加工、制造的轴压水压联合作用岩石流变试验系统,进行真实压力水环境下高水材料的蠕变试验。结果表明:水环境有利于高水材料强度的保持和发展,水压力可以提高材料的承载能力和长期强度;同时,水压力可以抑制高水材料的蠕变发展,且水压力越大,材料稳定蠕变的极限蠕变量越小;水压力对高水材料蠕变试验的初始应变率有显著影响,并影响进入到稳定蠕变阶段所需的时间长度。
To study the activity law of high-water-material in goaf,using the self-developed instrument,the triaxial creep test of high-water-material under real water environment was conducted and the creep characteristics was analyzed. Results showed that water environment was conducive to maintain and develop the strength of high-water-material and the bearing capacity and long-term strength of highwater-material could be improved under water pressure. The creep development of high-water-material could be restrained under water pressure and the greater water pressure was,the smaller creep deformation of stable-creep stage would be. The initial strain rate of highwater-material and time length needed to enter stable-creep stage were significantly affected under water pressure.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
北大核心
2016年第S1期87-93,共7页
Journal of Sichuan University (Engineering Science Edition)
基金
国家自然基金煤炭联合基金重点资助项目(51134018)
水压轴压共同作用下深部矿井岩石峰后力学效应研究项目资助(51369001)
关键词
真实水环境
高水材料
水压力
长期蠕变试验
蠕变特性
real water environment
high-water-material
water pressure
long-term creep test
creep characteristics
