layout of drill hole

The layout of drill hole and the determination of parameter in advanced water injection to prevent rockburst from occurring;

预防冲击地压煤层掘进注水钻孔布置与参数的确定

A new type of irrigator multi-hole outflow pipe is developed which is suitable for drill lixiviant distribution for stope leaching, and a calculation method is put forward for pipe network's resistance and flow distribution.

为解决原地爆破浸出钻孔布液中存在的溶液分配不均匀问题 ,引用了微灌技术。

This study, which is useful for evaluating coal bed methane resources, analyzes the methane content in coal bed and the features of distribution of boreholes, points out the inappropriateness of reflecting general feature of methane content through mean value of methane content, and proposes a new method of regression analysis.

分析煤层甲烷含量和钻孔分布特征,指出用甲烷含量平均值来反映甲烷含量总体特征是不合适的。

15100 extraction face of Huangyanhui minefield,Shanxi Province as example,introduced a basic method to determine borehole location through angle of caving zone,angle of water conducted fracture and water conducted zone computation.

以山西省黄岩汇井田15100采掘工作面所施工的两个"三带"观测孔为例,介绍了通过冒落带角、导水裂缝角和导水裂缝带的计算来确定钻孔位置的基本方法。

When it has been decided where we are going to drill, we put up at the surface an oil derrick.

决定了钻孔位置后，我们就在地面上竖起井架。

A Few Methods of Raising the Accuracy of the Location of Drilling a Hole for Fitters;

提高钳工实习钻孔位置精度的几种方法

Adjust bust point. Trace off form the draft, add seam allowances. Notch and mark drill hole for dart point.

调整胸点。从样板原图上描下,加缝份。打刀眼并标出省端点的钻孔位置。

Mark location of the holes for the opposite leg and drill three more holes.

标注出对面支柱的孔洞位置,并打钻出三个孔。

A. Position the bores according to the product. Drill φ 6 bores respectively with impact driller, after the center line for bolt bore is drawn in the appropriate position on the wall.

根据产品安装孔位，在墙面相应位置画出螺钉孔中心线后，用冲击钻分别钻φ6孔。

"When tappings are needed at any other than the standard boss locations, a sketch must be provided clearly showing the exact location on the valve."

如果需要在上述标准以外的位置钻孔,请提供准确、清楚的设计图,标明阀体上准确的钻孔的位置。

Optimization study of drilling riser guiding holes

海上钻井隔水导管导向孔位置优化研究

To drive(a screw or bolt)into a countersink.

将钻或螺栓置入埋头孔

Michel: If we drill holes in strategic locations, we compromise the load-carrying capacity of the wall.

如果我们在几个重点位置钻孔,我们就能破坏掉这个墙的承重力量.

To drill the proper size hole in an exact location requires considerable skill.

在准确的位置上钻一个尺寸正确的孔要求相当的技巧。

Remove stem assembly (A) and lock setting by drilling hole and inserting dowel pin (C).

拆卸阀杆总成(A)，并且通过钻孔锁定设置和插入定位销(C)。

Study on axial vibration drilling to improve positioning accuracy

轴向振动钻削提高钻孔定位精度研究

The Better Chosen of the Field Arrangement of the Drill Hole Pulls Out Putting Drills and the Drill Hole Parameter of the Coal Bed Gas in PanJiang Mining Area;

盘江矿区煤层气钻孔抽放钻场布置及钻孔参数优选

The controller is floor/Base plate mounted by using the three pre-drilled holes in each leg. The holes are dimensionally on the same line for ease of mounting.

控制装置是通过每个支柱的三个预钻孔安装在地面/底板上。这些孔位于同一条支线上,便于安装。

Point-to-point systems are suitable for hole-machining operations such as drilling, countersinking, counterboring, reaming,Boring, and tapping.

点位系统适用于钻孔、锪孔、扩孔、铰孔、镗孔、攻丝等孔加工。

"Drill press: or drilling machine, Machine tool for producing holes in hard substances."

直立钻床,亦称drilling machine,可在硬物质上钻孔的装置。

Complications associated with pegging included peg hole drilled on an angle, drilling off center, drilled hole shallow, granuloma and infection, total complications occured in 22.2% in the review, most that are of a minor nature can be cured.

并发症有钻孔偏位、偏斜、孔浅、钻孔处慢性肉芽肿、感染等,发生率为22.2%.

The post-process for hole-machining of Heidenhain iTNC530

海德汉系统钻孔循环后置处理的开发