1) drilling depth
钻孔深度
1.
Based on an actual project,tests and analyses the heat exchanging performances of the vertical U-shaped ground heat exchanger,and obtains the heat release in summer and the heat absorption in winter of ground heat exchanger for unit well depth and the optimal drilling depth.
根据工程实际情况,对竖直U形地埋管换热器的换热性能进行了现场测试和分析,得出了单位井深地埋管的夏季散热量、冬季取热量及最佳地埋管钻孔深度。
2) Maximum drilling depth
最大钻孔深度
3) Cost of drill hole
单位钻孔深度成本
4) Drill hole
钻孔
1.
Application of drill hole technology in inclined shaft's dewatering system;
钻孔技术在斜井排水中的应用
2.
3D reconstruction from section plane views based on drill hole information;
基于钻孔信息的二维剖面图的三维实体重建
5) Drilling
钻孔
1.
Study on the equipment and machining methed of drilling-tapping once shaping;
钻孔和攻丝一次成形的加工方法及设备研究
2.
Experimental simulation of drilling impact of coal sample in three-axle enclosed pressure;
煤样三轴围压钻孔损伤演化冲击实验模拟
3.
Study on drilling performance of swiveling conic abrasive jet;
旋转锥形磨料射流钻孔性能的研究
6) drilling hole
钻孔
1.
Technical practice of using downward drilling hole to pull out gas;
下向穿层钻孔抽采瓦斯技术实践
2.
The relation between pumping volume of drilling hole and uranium concentration in pregnant solution;
钻孔抽液量与浸出液铀浓度的关系
3.
An optimum method of calculating drilling hole position in preventing cross-measure cutting coal gas burst is put forward.
提出了在石门揭煤中预防瓦斯突出的一种计算钻孔位置的优化方法。
参考词条
补充资料:地表钻孔抽水
地表钻孔抽水
dewatering through well
d{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)
说明:补充资料仅用于学习参考,请勿用于其它任何用途。