摘要
对采用普通钻探设备施工高精度垂直孔所面对的操作工艺等方面的问题进行了分析研究，并成功地将选择的工艺参数用于实际施工中，取得了较好的效果。
ome problems about drilling highly vertical bord-holes with conventional drilling tools,including the constrction technic,were discussed and solved.The optimal drilling parameters were selected to apply successfully to the construction of the vertical bore-holes As a result ,the inclinations of the vertical bore-holes are all less than 0.035
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
1996年第3期56-59,共4页
Coal Geology & Exploration
