This paper focuses on the discussion of the technique of constructing a cast in place pile in a submarine drilled well.
水上钻孔灌注桩施工应根据水底地质地貌情况 ,解决好护筒的选型、止漏、埋设、吊拔以及水中桩身的保护。
The system is constructed by drilling method and the air intake and the gas outlet are connected by a directional drilling hole.
介绍了对吉林省双阳煤矿边缘部分所遗留的煤层所设计的煤炭地下气化炉 ,该气化炉采用定向钻孔贯通 ,钻孔法建炉 ,通过计算可获得较大的经济和社会效
As a trenchless construction method, directional drilling and PE pipe dragging is uniquely advantageous, with less impact on nearby buildings and traffic, lower cost for maintenance, better protection of the ground services, etc.
定向钻孔拖拉高密度聚乙烯平壁管(HDPE管)作为一种非开挖施工方式,具有对周围构筑物、交通的影响小,维修费用少,对管线的保护作用大等独特的优越性。
Spiral and round curve methods of General Geological Coordinate System have established the basis on which the design of curved or directional drilling can be well calculated .
通用地质坐标系的似螺线法和圆弧线法为设计弯曲和定向钻孔提供了全定量计算的基础,并能在钻孔施工发生偏离时,指导选择钻孔纠斜方案。
Study on Technology of Bores Through Coal and Rock Seams Draining Long Distance Pressure Relief Gas in Bed Plate Tunnel;
底抽巷上向穿层钻孔抽放远程卸压瓦斯技术研究
Gas Drainage by Boring Near Seam at 43001 Coal Face
43001采煤工作面上邻近层穿层钻孔瓦斯抽放
Gas Drainage Technology with Borehole Through Protected Seam for Up Protective Seam Mining
开采上保护层被保护煤层穿层钻孔抽采瓦斯技术
3）The starting-crack location and pressure and direction of hydraulic fracture bore which through many coal delaminations mostly lies on the intensity of furthest-weak coal delamination and interface.
3）穿层钻孔起裂位置、方向及起裂压力主要受最弱煤分层及分层层面强度的影响。
The paper sequentially analyzed the starting-crack mechanism of hydraulic fracture bore which lies in coal delamination or lies between two coal delaminations or through many coal delaminations.
进而论文分析阐述了煤分层中钻孔、分层层面钻孔、以及穿层钻孔水力压裂的起裂机理。
Research on Maximize Technology of Extraction Mining with Drilling Through Coal Seam in Protective Coal Seam
保护层开采穿层钻孔抽采最大化技术研究
The analysis and application of specific gravity of slurry in bore pile construction through sand seam
穿过砂层钻孔桩施工中泥浆比重的分析与应用
Effect Analysis of Experiental Stage on Mohaupt Blasting with Drilling Through Coal Seams in Cuimiao Coal Mine
崔庙煤矿穿层钻孔聚能爆破实验阶段效果分析
Boring technology of pile foundation of bridge to penetrate multilayer of karsts
桥梁桩基穿越多层岩溶地段的钻孔技术
To make a hole in or through something with or as if with a drill.
钻孔，打洞用或似用钻打洞或穿孔
INFLUENCE OF HOLE POSITION ON BENDING RIGIDITY OF UD-LAMINATE
穿孔位置对单向层板弯曲刚度的影响
make a small hole in something as a guide for a drill.
在某物上做一个小孔，好像为钻孔机做向导。
Permeability-Increasing Theory of Array Crossing Boreholes Using Blowout-Inducing and Its Application on Gas Drainage in Outburst Coal Seams
突出煤层穿层钻孔诱导喷孔孔群增透机理及其在瓦斯抽采中的应用
Construction technique of directional drilling machine passing through long-distance complex stratum
定向钻长距离穿越复杂地层的施工技术
Construction Technology for Bored Pile Close to the Flood Wall through Riprap Layer
紧贴防汛墙并穿越抛石层的钻孔灌注桩施工技术
Optimization study of drilling riser guiding holes
海上钻井隔水导管导向孔位置优化研究
Using a drill, he bore a hole through the wood.
他用钻孔机在木头上钻了一个孔。
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
