Application of across - drillhole water infusion to prevent gas outburst in excavating face 顶分层工作面瓦斯综合治理措施
2.
Abstract : this paper describes the working principle of drillhole radar and recommends two working patterns : single - drillhole reflection and crosshole tomographic imaging . the technique was used to make lithologic evaluation of deep strata and detect geological anomalous bodies with obvious effects obtained 文摘:阐述了钻孔雷达的工作原理，介绍了单孔反射和跨孔层析成像2种工作方式，并将其用于深部岩层岩性评价和地质异常体探测，效果显著。
