longhole drilling是什么意思

网络释义

用法例句

Measures prevent deviation of deep drilling and test method;

防治深孔钻孔偏孔及检测方法

According to the actual situation of a Mo mine which will employ multi-stage mining and the occurrence morphology of orebody which is deep and large,the paper introduces sublevel stoping mining method drilled by mid-deep borehole drilling machine and loaded by electric-rake.

针对某钼矿分期开采的实际情况以及矿体的厚大特征,选用中深孔凿岩、电耙出矿的分段凿岩阶段矿房法进行开采,有效地提高了矿块生产能力。

Study of Waste Blasting Parameter Optimization of Medium Depth Hole in Qianchang Copper-Iron Mine

前常铜铁矿中深孔凿岩爆破参数优化研究

To lower blasted boulder yield is one of the most important technical considerations in deep-hole blasting operations of mine.

降低深孔爆破落矿大块率是矿山凿岩中的一个重要课题。

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

A machine that bores through hard surfaces, used especially for tunneling through rock.

凿岩机一种钻孔于坚硬表面的机器，尤用作凿穿岩石的隧道

deep gorges gouged hundreds of metres into the bedrock;

深峡在岩床中凿人了几百米；

The enterprise beijing langjin photoelectric industry co., ltd. offers Labelling machine among other things .

公司提供大量的穿孔机、凿岩机和贴标签机。

Construction technology of excavated and cast-in-place piles with a large diameter and an extra depth in karst geology

岩溶地质大孔径超深桩挖孔施工技术

Development of Software for Large /Moderate Diameter Blasthole Drilling and Blasting CAD

大中孔凿岩爆破计算机辅助设计软件开发与研究

paper tape puncher

纸带穿孔器纸带凿孔机

These pictures were carved on grey or dark blue rock stones, in a simple and bold style.

这些图像大都凿刻在深 灰或灰蓝色的岩石上，粗犷、简洁、浑然而多变。

Syudy on Porous Medium Model of Soft Rock in Deep Rock Mechanics

深部岩体力学中软岩多孔介质模型的研究

Middle-Deep Bore Blasting Experimental Study on Hard Rock Tunnel Heading

硬岩巷道掘进的中深孔爆破试验研究

Middle and Deep Hole Controlled Blasting of Rock Cut in the Complicated Surroundings;

复杂环境下路堑土岩中深孔控制爆破

Deep Hole Blasting in Hard Rock of No.1 Auxiliary Shaft of Lilou Steel Coal

李楼铁矿1#副井硬岩深孔爆破技术

Application Research on Medium-length Hole Blasting in Hard Rock Drift Excavation

中深孔爆破在硬岩施工中的应用研究

Experiment and Research on Deep Borehole Blasting in Mine Rock Roadway with Thick Soft and Weak Parting

厚软弱夹层岩巷中深孔爆破试验研究

Study on drill bit for large diameter core drilling of deep hole in hard rock

硬岩深孔大口径取芯钻进的钻头研究

And it is used successfully in shield tunneling, horizontal drilling, deep drilling, slotted walls and bore piles construction projects.

主要应用于盾构隧道挖掘，水平钻孔，深层钻孔，开凿围墙和钻桩的建筑项目。