摘要
基于埋设在井壁上的应力应变自动监测系统,通过大量监测数据历时曲线比较,分析了某矿井筒井壁破裂过程中不同层位应变的历时变化情况,对井壁破裂前期和破裂过程中的应变演变特征进行了对比分析,探讨了井壁破裂演变过程中的应变特征,指出井壁濒临破裂时竖向应变积累速率加快,井壁破裂时井壁应变出现"跳水式"的释放,井壁破裂释放期持续10～15d,释放的量值大小和井壁的破裂程度以及距离破裂点的远近相关。
Based on the strain monitor systerm of a shaft lining, got a lot of strain data before crack, in cracking and af- ter crack. Through the analysis and contrast of the mine shaft lining data on different layers at the same time point and a given point＇ s history data, gave the figure of strain characters of the shaft lining crack. And pointed that the in- creased velocity of shaft lining strain get faster, and the shaft lining strain suddenlly decrease in the process of crack, the crack process will last about 10 - 15 d. The released amount of strain relate to the location and crack level.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2010年第2期198-202,共5页
Journal of China Coal Society
基金
国家自然科学基金重点资助项目(50534040)
中国矿业大学科技基金资助项目(2006B003)
中国矿业大学青年基金资助项目(2007A007)
关键词
井壁破裂
应变
竖直附加力
shaft lining crack
strain
vertical additional force
