地震波CT技术探测煤层上覆岩层破坏规律

OBSERVATION OF OVERBURDEN FAILURE OF COAL SEAM BY CT OF SEISMIC WAVE

利用地震波CT技术进行煤层上覆岩层破坏规律探测,从测试原理、工作方法及资料解释等方面阐述了孔-巷间地震波CT探测技术,并通过煤矿上提工作面观测实例,进一步说明该方法进行上覆岩层破坏观测及判定的准确性和可行性。研究表明,与传统方法相比,地震波CT技术观测成果具动态性,且经济、直观,达到高精度和高分辨的精细要求,其结果实用可靠。

The observation of overburden failure is a key issue of safe production in coal mines. The general methods have certain defects. A new observation method for overburden failure by CT technique of seismic wave is introduced. The principle of dynamic detection, the operation methods and data analysis of CT technique of seismic wave between bore hole and gateway are discussed. The validity and feasibility of the dynamic detection of overburden failure are explained by an example of working face. The results show that the CT technique of seismic wave can detect the overburden failure dynamically with lower cost, higher accuracy and higher resolution than those with conventional methods.