岩石钻孔

It sy stematicaly instructs the construction method of bore-hole filling pile in the rock area with under-earth mined-out layer.

文摘：笔者以神延铁路W8标段多座桥梁工程实践为基础，系统介绍了有地下采空层的岩石地区钻孔灌注桩施工的方法。

It is stated systematically in the thesis the methods theories and measuring principle of all kinds of geostress determination technology. In particular the four methods recommended in 1987 by the committee of test method of the International Society of Rock Mechanics, i.e. two over-coring methods of strain relief in boreholes, hydraulic fracturing method and stress furbish measurement which measures the surface stress.

本文较为系统地、全面地介绍了当前国内外通用的各种地应力测量方法的理论、测量原理；特别就国际岩石力学学会试验方法委员会于1987年推荐的4种地应力测定方法(钻孔孔径变形测量法、钻孔孔壁应变测量法、水压致裂法以及测量岩体表面应力的应力恢复测量法)作了较为详细的叙述。

A tool used for drilling.A needle-shaped drill for boring holes in rock or masonry.

钻头，钻石器，钻孔器用于在岩石或砖石上钻孔的针形钻

The present invention relates to a drill bit intended for percussive rock drilling.

本发明涉及一种用于冲击岩石钻孔的钻头。

The invention also relates to a thread joint for percussive rock drilling.

本发明还涉及一种用于冲击岩石钻孔的螺纹接头。

Drilling a hole in the coal seam, soft rock and in the farmland beat the well time and limited efficacy rate .

200米液压钻机主要用于钻探各种深度为200米左右的各种角度的各类用途的孔，可在不同硬度的岩石中钻孔，而在煤层、软岩石中钻孔以及在农田打井时效率最高。

The results show that the study on transimittivity can be done using the points along the circle arc centered at the roadway or the boring core, the transimittivity at the joints along the right angle ray can be studied using one single point behind the joint, and the studies on transimittivity can be done on any reasonable radius value of the roadway or boring core in a typical rock.

分析结果表明：单节理后各节点透射率的研究，可以通过单节理后某一以巷道或钻孔中心为中心的圆弧上各节点的透射率来展开；射线角为90°的射线上节理后各节点透射率的研究，可以通过节理后某一节点的透射率来展开；单节理的透射率的研究可以在一个固定半径值的巷道或钻孔的模型上用一种典型的岩石进行。

In order to research the decay laws of pressure wave and positive pressure actuation duration with the increasing propagation distance under the repeated penetration and explosion of conventional weapons in rock, the tests with varying scale charge and scale distance of the first drilled explosion and the repeated drilled explosion are completed.

为探索常规武器重复打击下岩石介质中压力波及正压作用时间随传播距离的增加而衰减的规律，进行岩石介质中不同比例装约和比例距离的一次钻孔爆炸和重复钻孔爆炸试验。

The rock-melting drill is of a shape and is propelled under sufficient pressure to produce and extend cracks in solid rock radially around the bore by means of hydrostatic pressure developed in the molten rock ahead of the advancing rock drill penetrator.

这种岩熔钻孔机具有着一种形状，它在足够的压力下才能推进，从而在坚硬的岩石中产生裂缝并使其在钻孔周围成放射状地扩展延伸，它是凭借液体静压力的方式推进的，而这种静压力产生于正前进的凿岩机弹头前方的熔融岩石。

Meters liquid presses drill machine is mainly used to drill to explore various depth as 200 meters any kind of angle of bore . It can drill a hole in the rock of different degrees of hardness. Drilling a hole in the coal seam, soft rock and in the farmland beat the well time and limited efficacy rate .

200米液压钻机主要用于钻探各种深度为200米左右的各种角度的各类用途的孔，可在不同硬度的岩石中钻孔，而在煤层、软岩石中钻孔以及在农田打井时效率最高。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。