In this paper,a series of reasonable preventing outburst validity index and drilling parameters are selected to achieve a goal of eliminating risk of the coal and gas outburst in accordance with the principle of gas pre-pumping preventing outburst.
根据预抽煤层瓦斯防突作用原理,选取合理的瓦斯防突有效性指标及各钻孔参数,达到消除该煤层煤与瓦斯突出危险性的目标。
The mathematical model of chip break and methods for mating vibratory drilling parameters are analyzed.
分析了振动钻孔断屑的数学模型和振动钻孔参数搭配方法,介绍了稳定振动钻孔参数的控制方法和微机单片机二级控制方式的应用。
Research on the mine geology drill data digitize and three-dimensional visualization;
矿山地质钻孔数据数字化三维可视化的研究
Triangle tiles reconstruction from drill data-based complex contours
基于钻孔数据的复杂轮廓线三角面片的重构
On the basis of the researches before and aiming at character and application of mine,the authors present an algorithm of fast constructing stratum triangulation network and a novel method for reconstructing 3D geologic model with drill data.
针对矿山特性,在综合前人研究成果的基础上,给出了一种由工程钻孔数据构建三维地层模型的方法,同时改进了构建地层的三角格网生成算法,提高了三角格网的生成速度,并通过一个建模实例展示了该方法的实际建模效果。
Study and implementation of borehole data based 3D visualization of ore body;
基于钻孔数据的矿体三维可视化研究与实现
3D modeling method of geological bodies including faults based on borehole data;
基于钻孔数据的含断层地质体三维建模方法
Realization of a 3D subsurface geological modeling software in urban areas based on borehole data;
城市钻孔数据地下三维地质建模软件的实现
The Better Chosen of the Field Arrangement of the Drill Hole Pulls Out Putting Drills and the Drill Hole Parameter of the Coal Bed Gas in PanJiang Mining Area;
盘江矿区煤层气钻孔抽放钻场布置及钻孔参数优选
Experimental Study on Rock Breaking Parameters of Combined Swirling and Round Jet
直旋混合射流破岩钻孔参数试验研究
Research on Parameters of Gas Drilling Bore in Steep Coal Seam Gob
急倾斜煤层采空区瓦斯抽采钻孔参数研究
Numerical Simulation of Cutting Forces Generated by Drills with Indexable Inserts and Optimization for Drill Parameters;
可转位浅孔钻钻削力数值仿真及参数优化
Study on the parameters of highwall auger mining in open pit mine
露天矿高边坡钻孔采矿法的参数研究
The Parameters Optimization of the Reverse Circulation DTH Hammer and Studies on Its Drilling Technique;
全孔反循环潜孔锤参数优化及其钻进工艺研究
The deviational survey unit measures the parameters of the apex angle and the azimuthal angle of the bore hole;
测量单元用于测量钻孔的顶角与方位角等参数；
Mechanism Research of Gas Drainage by Drilling Long Holes
井下预抽瓦斯定向长钻孔的合理性参数研究
Geometric Parameters Optimization for Drills with Indexable Inserts Based on FEM
基于FEM的可转位浅孔钻几何参数的优化
The Optimized Study of Gas Taking out Parameters of High Position Boring of Taoyuan
桃园矿高位钻孔瓦斯抽放参数优化研究
Effect of Cutting Parameters on Deep Hole Drilling's Quality of High Pressure Heater Tube Plates
切削参数对高压加热器管板深孔钻孔质量的影响
Reliability Analysis of Bored Pile Foundation Based on the Random Field of Geotechnical Parameters;
基于岩土参数随机场的钻孔灌注桩基础的可靠性分析
Application of DOE on Parameter Optimization in PCB Micro-drilling Process
实验设计(DOE)技术在PCB微孔钻削工艺参数优化中的应用
The Study on the Key Gas Drainage Technique by Long & large Diameter Roof Boreholes in Fully Mechanized Face
综采面顶板走向大直径长钻孔瓦斯抽采技术参数的研究
Most drilling in metal is done with a twist drill.
大多数金属钻孔用的是麻花钻头。
drilling practice
钻井实践；钻井习用方法；钻井作业；钻井参数
Test of digital borehole camera and borehole computed tomography imaging
数字钻孔摄像与钻孔CT层析成像测试试验
Numerical Simulation of Drilling Mechanism under Non-steady Cutting Conditions for Dills with Indexable Inserts;
可转位浅孔钻非稳态钻削的数值仿真研究