【作者】 滕学军； 张万斌；

【Author】 Teng Xuejun Zhang Wanbin (Beijing Research Institute of Coal Mining,Central Coal Mining Research Institute Beijing 100031)

【机构】 煤炭科学研究总院北京开采所；

【摘要】 锤击波速法是一种地球物理方法,其实质是采用锤击为激发源的地震波折射法。煤体应力状态不同,震动波在煤体中传播速度不同。本文介绍了用锤击波速法对2个回采工作面支承压力观测的试验研究,并通过与钻孔应力计测试结果对比,得出了地震纵波波速V_P与相对压力P的关系。研究结果表明:锤击波速法观测支承压力是一种简单、可靠的方法,可以快速准确地测量回采工作面支承压力分布的全部特征。更多还原

【Abstract】 The hammering wave quick measuring method is a geophysical seismic wave refraction method by using an excitative source.Due to a different state of coal body,apropagation velocity of an vibration wave in different coal body is different.This paper described a atudy on monitoring and measuremrnt of abutment pressure in two coalfaces in our country with the hammering wave quick measuring mehtod.Through a comparison with the results of other methods,it can get a relation curve between the wave velocity Vp of a longitudinal seismic wave and the pressur p.The results of the test shown that the hammering wave quick measuring method is a easy and reliable method to measure the distribution of the abutment pressure at coalface.更多还原