The borehole ultrasonic imaging method can precisely reflect the smoothness of the borehole wall , and then judge the weathering degree of the rock and determine thickness of the weathering bed 摘要鉆孔超聲成像方法能精確地反映井壁的光滑情況,進(jìn)而判斷巖石的風(fēng)化發(fā)育程度,確定風(fēng)化層的厚度。
Through some examples , we think that the ultrasonic imaging method that can obtain some parameters of the crack attitude and the opening is an effective method in studying the crack of underground rock stratum 經(jīng)過(guò)多項(xiàng)工程實(shí)踐,我們認(rèn)為超聲成像法對(duì)鉆孔孔壁掃描獲得裂隙產(chǎn)狀、開(kāi)度等參數(shù)是研究地下巖層裂隙的有效方法。
This paper introduces four kinds of mehtods that is used to investigate crack in underground rock stratum : borehole core method , ultrasonic imaging method , borehole television method , and borehole discharge well logging method 摘要本文介紹了地下巖層裂隙的4種勘察研究方法:鉆孔巖芯法、超聲成像法、鉆孔電視法、鉆孔流量測(cè)井法。