交叉钻孔,cross borehole
1)cross borehole交叉钻孔
1.Rapid seam opening technology withcross borehole gas drainage in outburst thick seam;突出厚煤层交叉钻孔强化抽放快速揭煤技术
2.Among the technologies of gas drainage in current seam,cross borehole is a new style hole layout fashion.本煤层瓦斯抽放技术中 ,交叉钻孔是一种新型的布孔方式 。
英文短句/例句
1.Research on the technology of integrated interchange drilling to drainage gas综合立体交叉钻孔抽放瓦斯技术研究
2.Study on Rational Borehole Space of Crossed Boreholes for Gas Pre-drainage预抽煤层瓦斯交叉钻孔合理孔间距的研究
3.Cross-entropy approach for tool path planning of PCB drill machines求解PCB钻孔机刀具路径规划的交叉熵方法
4.Research on Three-Dimensional Geological Modeling Method Based on Drilling Data and Constraints of Intersected Folded Cross-Sections基于钻孔数据和交叉折剖面约束的三维地层建模方法研究
5.A tendon or ligament also can be secured to bone through a drill hole using a screw for an interference fit as in anterior cruciate ligament reconstruction procedures( see Chapter43).肌腱或韧带也可通过钻骨孔用螺钉进行可靠的接触固定，如在前交叉韧带修复术时。
6.tap(ping) drill螺丝孔钻，螺丝底孔钻
7.The sorker was drilling.此工人在用钻孔机钻孔。
8.A: The interval is too long. I"m afraid. Could you deliver the drillers sooner?恐怕时间隔太长了。能不能快些交付钻孔机？
9.Research and Implementation on Oblique Crossed Boreholes in Air Return Gateway of Coal Mining Face回采工作面回风巷斜交钻孔的研究与实施
10.Any of numerous hand tools for boring holes.钻孔工具，手钻钻孔用的手持工具
11.kelly for well-drilling machiens旋转钻孔,钻井机用
12.A tool used for drilling.钻头用于钻孔的工具
13.cross-junction box交叉接线盒，交叉接线箱
14.crossing:The act or action of crossing.交叉:交叉的行为或动作
15.The act or action of crossing.交叉交叉的行为或动作
16.boring method (of pulp sampling)（纸浆取样）钻孔法
17.Drilling 50 yards deep,钻孔至50码深处，
18.Construction of the Crown Concrete of the Intersection Section of Diversion Tunnel and Middle Flood Discharging Tunnel in the Jishi Gorge Hydropower Station积石峡水电站导流洞与中孔泄洪洞交叉段顶拱混凝土施工技术
相关短句/例句
quartering machine交叉钻孔机
3)cross drilled manifold交叉钻孔的油路板<液>
4)cross drilled manifold交叉钻孔的油路板
5)crosshole交叉孔
1.It provides one method to processcrosshole-milling, basing on analysis, investigation and research for lockpin hole processing technics, and validation in practice.通过对前桥锁销孔加工工艺方法的分析、调查研究,以及大量的生产实践的验证,提供了一种新型的铣削交叉孔的加工工艺方法。
6)oblique crossed borehole斜交钻孔
1.8 Mine of Pingdingshan Coal Mining Group and according to the distribution theory of the roof caving zone in the coal mining face,with a large power hydraulic powered drilling rig and the rational borehole drilling parameter design,oblique crossed borehole drillings for gas drainage were operated in the roof of the coal mining face.使用斜交钻孔连续抽放后,上隅角瓦斯体积分数下降了0。
延伸阅读
地表钻孔抽水地表钻孔抽水dewatering through welld{bjoo之uankong ehoushu}地表钻孔抽水(dewatering through well)为了解除矿区地下水害威胁，在地表矿区边界之外的来水方向上围绕矿体开凿若干个大直径钻孔，在钻孔内安放深井泵或潜水泵排水，使矿区开采地段处于疏干降落漏斗水面之上的疏干方法。钻孔布置见矿山深井降水孔平面图。钻孔直径D可按公式D一d十50+2了尸·、’· 户。’\。。/望‘，卜’。户)’力价/{/。一、\匕一办’\矿山深井降水孔的平面图l一来水方向;2一抽水钻孔; 3矿区;4一隔水层(a十b)计算。其中d为水泵的最大外径，mm;。为过滤管的厚度，mm;b为充填料的厚度，mm。地表钻孔抽水疏干在地表进行，施工简单、方便，劳动条件好、施工管理容易，钻孔的布置及疏水设备的迁移都比较灵活。因此，在条件允许的情况下，应该尽量采用地表钻孔抽水，疏干矿床。 (张福有)
