crooked hole

According to the quality problems encountered in construction process, such as hole collapsing, plugging and borehole deviation their causing reasons are analyzed; at the same time corresponding quality control measures are proposed.

介绍了嵌岩钻孔灌注桩的作用原理及主要特点,针对施工过程中塌孔、钻孔偏斜、导管堵塞等常见的质量问题,对其原因作了分析,提出相应的质量控制措施。

A comparative study of the thrust force at initial stages of drilling on inclined surfaces was conducted through experiments.

分析模型合理地解析了斜面钻孔初期的受力现象。

This paper provides a method of machining a]loy for small tilted hole drilling machine with high accuracy' By incorporating micro - computer control and fast controlmethod, shaft conttol, which belongs to small capacity speed closed - loop DC controlwith digital trigger,is achieved.

成功地解决了高精度小孔径斜孔钻床加工合金的问题，并明显地提高了加工质量和自动化程度。

Reason Analysis and Countermeasures for Undergound Drilling in Coal Mine

煤矿井下施工钻孔偏斜原因分析和对策

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%.

Talking about the Hole-site Correcting Technology in Drilled Pile Construction on Granite Plagioclase Strata

花岗岩斜岩地层钻孔桩施工孔位纠偏技术

Brigg's clinophone

勃瑞格斯型钻孔测斜仪

Experiment Research of the Drill Fracture Criterion in Inclined Hole Drilling

斜孔钻削中钻头折断的判据实验研究

Analysis of Program of Deviation Prevention and Control in Freezing Hole Construction

冻结孔钻孔过程中的防偏及控偏方案浅析

An awl with a beveled tip, used to make holes in wood for brads or screws.

锥钻，打眼钉钻头倾斜的钻子，用于在木头上钻孔以钉角钉或螺钉

Drill jig size calculation of the double inclined holes in the handle of YT 24 rock drill

YT24型凿岩机柄体双斜孔钻模尺寸计算

Equipment Selection and Technical Measures for 2010m Deep Slant Hole Drilling

2010m斜孔钻探设备选择及技术措施

The bridge drilling hole and grouting pile bore diameter and tilt degree new locale testing method

桥梁钻孔灌注桩孔径与倾斜度现场检测新方法

Make Use Guide Drill Case Drill a Hole Lead to of Deviate Heart of a Drill

使用导向钻套钻孔引出的中心偏移问题

The Jeopardizing of the Slant of Bore to Hydrographic Bore and Precaution in the Incompact Stratum Layers

松散地层中井斜对水文钻孔的危害及预防

Application of Bore Incline-measure Technology in Anchor Cable Construction of a Huge Hydropower Station

钻孔测斜技术在某电站锚索施工中的应用实践

Practice of using raise boring in excavation of guide hole for shaft with large angle of inclination

反井钻开挖大倾角斜井导孔的工程实践

Fire Prevention Practice on Drilling Holes with Inclined Slices on Fully Mechanized Face Roof of Thick Seams in Junde Colliery

峻德矿特厚煤层综放面顶板下斜钻孔防火实践

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

Applicatin of EL in-place inclinmoter to landslide monitoring

固定式钻孔倾斜仪在滑坡示范监测中的应用

Study and Application of High Wear-resistance Drilling Rod for Wire-line Coring in Medium-deep Inclined Hole

中深斜孔绳索取心高强耐磨钻杆的研究与应用