摘要
为准确地掌握工作面采动过程中顶板岩层破规律及其特征,获得相应的技术参数,消除突水威胁、保障煤层安全开采等煤矿防治水工作。运用分布式光纤监测技术可以在其长度范围内连续监测覆岩在开采过程中应力应变的分布及大小,获得煤层覆岩的变形规律。结果表明,这种监测方法的突出优点就是改变了传统的点式监测方式,弥补了点式监测的不足,实现了实时、长距离和分布式的监测目标。该技术在内蒙古某煤矿"两带"高度探测中取得结果和并行电法监测相互验证,证明了该方法的可行性。
To grasp accurately of roof strata failure pattern and its features during working face mining process, acquire corresponding technical parameters, eliminate water bursting threat and ensure safe coal mining etc. in coalmine water control works, the distributed optical fiber monitoring technology can continuously monitor the stress and strain distribution and their magnitudes in overburden during the mining process within the range of its length, and achieve coal overburden deformation pattern. The result has shown that the projecting advantages of the monitoring method have changed traditional spot monitoring mode, made up spot monitoring deficiency, realized real-time, long distance and distributed monitoring targets. The feasibility of the method has been proved by mutual authentication of results from the method and electric prospecting monitoring in an Inner Mongolian coalmine height prospecting of caving zone and water conducted zone.
作者
谭海亮
李七明
Tan Hailiang;Li Qiming(The First Hydrogeological Exploration Team, CNACG, Handan, Hebei 056004)
出处
《中国煤炭地质》
2019年第5期60-65,共6页
Coal Geology of China
关键词
冒落带
导水裂缝带
煤矿防治水
分布式光纤
caving zone
water conducted zone
coalmine water control
distributed optical fiber