下向钻孔,downward drilling holes
1)downward drilling holes下向钻孔
2)downward drilling to extract下向抽采钻孔
1.The research shows that through constructingdownward drilling to extract in floor suction roadway by properly using various exiting resource and technique the gas controlling problem of no high level suction roadway caused by unpunctual drivage of mining face is settled,indicates that temporal benefit and economic benefit are obtained,gas comprehensive controlling.为解决因采掘接替而引起的工作面瓦斯综合治理中的断缺,大胆采用钻孔法替代巷道法瓦斯治理技术,妥善利用现有资源和技术条件,在底抽巷中施工下向抽采钻孔,解决了因工作面高抽巷掘进不能按期到位而带来的无高抽巷段瓦斯治理难题,并在时间和经济上取得了良好效益,完善了采煤工作面瓦斯综合治理措施,确保了工作面按期、安全、高效回采。
3)underwater drilling水下钻孔
1.The blasting design and implementation as well as theunderwater drilling controlled blasting are discussed.爆破过程中,保证了过往船只的安全,介绍了爆破设计、施工工艺等方面的水下钻孔控制爆破技术。
2.Taking the example of the underwater reef blasting in waterway section of Pantan under the 2nd Phase Xijinag Project, the paper introduces the advantages of the application of improved YQ 100 downthehole drill for theunderwater drilling, and it also provides some suggestions accordingly.以西江二期滩航道水下炸礁施工为实例 ,介绍改进型YQ 10 0潜孔钻机在水下钻孔作业中的应用优势及建议。
3.Inunderwater drilling ,the first thing to he faced is how the hole is drilling and how it is formed.从复杂地质的构成、复杂地质对咸孔的影响以及复杂地质的处理这三方面进行了论述，为复杂地质条件下水下钻孔爆破的钻孔方法提出一些参考性意见。
英文短句/例句
1.Research of the Attenuation Rule of the Water Shock Wave Effect for Underwater Drilling Blasting水下钻孔爆破水击波衰减规律的研究
2.AHP-Fuzzy in Underwater Drilling and Blasting Construction水下钻孔爆破施工的AHP-Fuzzy技术
3.Numerical Simulation of Shock Wave in Water of Underwater Drilling Blasting水下钻孔爆破水中冲击波的数值模拟研究
4.The Safety Assessment of Fault During the Underwater Hole Blasting Construct;水下钻孔爆破施工过程事故的安全评价
5.Research on Construction Method and Quality Control of Underwater Bored Pile;水下钻孔灌注桩施工工艺与质量控制的研究
6.Discussion on the construction points and problems treating of bridge underwater cast-in-place bored piles桥梁水下钻孔灌注桩的施工要点及问题的处理
7.Numerical Simulation of Different Detonation Modes for Underwater Drilling Blast水下钻孔爆破不同起爆方式的数值模拟
8.THE BORE INJECTION PILE AND ITS CONSOLIDATION ON UNDERWATER PIPELINE钻孔灌注桩在水下穿越管道加固中的应用
9.Discussion On Feasibility of Using Fly-Ash in Tremie Concrete of the Castin--place Pile钻孔桩水下混凝土使用粉煤灰的可行性探讨
10.Research and Application on the Technology of Pouring Concrete of Bored Piles under Water;钻孔灌注桩水下混凝土灌注技术研究与应用
11.Research on Key Technique of the Measure-controlling System of an Underground Horizontal Drilling Machine;井下水平钻孔机测控系统若干关键技术研究
12.Quality problem of underwater concreting of cast-in-place bored piles and preventive treatment thereof;现场钻孔桩浇筑水下混凝土的质量问题及防治
13.Stability Study of the Measure and Control System of an Underground Horizontal Drilling Machine电控式井下水平钻孔机测控系统稳定性的研究
14.Improvement of tube welding for settlement prevention hat of tube applied in underwater concrete of bored piles钻孔桩水下混凝土导管焊接防沉降沿帽的改进
15.Construction technology of underwater concrete in bored pile of Eastern Long River Bridge in Hubei鄂东长江大桥钻孔灌注桩水下混凝土施工技术
16.Prevention and management of common problems during underwater concrete perfusion of drilling stake钻孔桩水下混凝土灌注常见问题预防及处理
17.The prevention and treatment of bored pile construction and underwater concrete pouring accidents钻孔桩施工及水下混凝土灌注事故的预防处理
18.Application of Bit Water Way in HDD水平定向钻进扩孔钻头水口应用分析
相关短句/例句
downward drilling to extract下向抽采钻孔
1.The research shows that through constructingdownward drilling to extract in floor suction roadway by properly using various exiting resource and technique the gas controlling problem of no high level suction roadway caused by unpunctual drivage of mining face is settled,indicates that temporal benefit and economic benefit are obtained,gas comprehensive controlling.为解决因采掘接替而引起的工作面瓦斯综合治理中的断缺,大胆采用钻孔法替代巷道法瓦斯治理技术,妥善利用现有资源和技术条件,在底抽巷中施工下向抽采钻孔,解决了因工作面高抽巷掘进不能按期到位而带来的无高抽巷段瓦斯治理难题,并在时间和经济上取得了良好效益,完善了采煤工作面瓦斯综合治理措施,确保了工作面按期、安全、高效回采。
3)underwater drilling水下钻孔
1.The blasting design and implementation as well as theunderwater drilling controlled blasting are discussed.爆破过程中,保证了过往船只的安全,介绍了爆破设计、施工工艺等方面的水下钻孔控制爆破技术。
2.Taking the example of the underwater reef blasting in waterway section of Pantan under the 2nd Phase Xijinag Project, the paper introduces the advantages of the application of improved YQ 100 downthehole drill for theunderwater drilling, and it also provides some suggestions accordingly.以西江二期滩航道水下炸礁施工为实例 ,介绍改进型YQ 10 0潜孔钻机在水下钻孔作业中的应用优势及建议。
3.Inunderwater drilling ,the first thing to he faced is how the hole is drilling and how it is formed.从复杂地质的构成、复杂地质对咸孔的影响以及复杂地质的处理这三方面进行了论述，为复杂地质条件下水下钻孔爆破的钻孔方法提出一些参考性意见。
4)drilling holes with inclined slices下斜钻孔
5)directional drilling定向钻孔
1.The system is constructed by drilling method and the air intake and the gas outlet are connected by adirectional 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
2.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。
3.Spiral and round curve methods of General Geological Coordinate System have established the basis on which the design of curved ordirectional 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。
6)drilling radial hole钻径向孔
延伸阅读
各向同性和各向异性物理性质可以在不同的方向进行测量。如果各个方向的测量结果是相同的,说明其物理性质与取向无关,就称为各向同性。如果物理性质和取向密切相关，不同取向的测量结果迥异，就称为各向异性。造成这种差别的内在因素是材料结构的对称性。在气体、液体或非晶态固体中，原子排列是混乱的,因而就各个方向而言,统计结果是等同的，所以其物理性质必然是各向同性的。而晶体中原子具有规则排列，结构上等同的方向只限于晶体对称性所决定的某些特定方向。所以一般而言，物理性质是各向异性的。例如， α－铁的磁化难易方向如图所示。铝的弹性模量E沿[111]最大(7700kgf/mm2),沿[100]最小(6400kgf/mm2)。对称性较低的晶体（如水晶、方解石）沿空间不同方向有不同的折射率。而非晶体(过冷液体)，其折射率和弹性模量则是各向同性的。晶体的对称性很高时，某些物理性质(例如电导率等)会转变成各向同性。当物体是由许多位向紊乱无章的小单晶组成时，其表观物理性质是各向同性的。一般合金的强度就利用了这一点。倘若由于特殊加工使多晶体中的小单晶沿特定位向排列（例如金属的形变"织构"、定向生长的两相晶体混合物等），则虽然是多晶体其性能也会呈现各向异性。硅钢片就是这种性质的具体应用。介于液体和固体之间的液晶，有的虽然分子的位置是无序的，但分子取向却是有序的。这样，它的物理性质也具有了各向异性。
