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1.
Pressure releasing and gas drainage with long bore hole in roof overburden of fully mechanized caving face
综放面顶板覆岩走向长钻孔卸压抽放瓦斯研究
2.
Application of Gas Drainage from Long Holes Along Roof Strike in the Working Face Upper Corner
走向长钻孔瓦斯抽放在治理工作面上隅角瓦斯中的应用
3.
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
4.
Study on the Vertical Bearing Capacity of Large-Diameter Bored Cast-in-Situ Long Pile;
大直径深长钻孔灌注桩单桩竖向承载性能研究
5.
Research on Axial Loading-Settlement Curve of Super-Long Bored Single Pile;
超长钻孔灌注单桩轴向荷载—沉降曲线研究
6.
The practice and application of kilometer-orientated large diameter and long-distance drilling
千米定向大直径长距离钻孔的实践与应用
7.
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
8.
The Optimal Design About the Trajectory of Non dig Guided Boring
非开挖导向钻进钻孔轨迹的优化设计
9.
Study on axial vibration drilling to improve positioning accuracy
轴向振动钻削提高钻孔定位精度研究
10.
Application of Bit Water Way in HDD
水平定向钻进扩孔钻头水口应用分析
11.
Experimental study on vertical bearing capacity of post cast bored pile in Shanghai region
上海地区超长后注浆钻孔桩竖向承载力试验研究
12.
The Experimental Research on the Vertical Bearing Behavior of Super-long and Large Diameter Bored Piles in Lake Dongting;
洞庭湖区大直径超长钻孔灌注桩竖向承载性状试验研究
13.
Research on Vertical Bearing Behavior and Deformed Mechanism of Supper-long hole Bored Pile in Xi an;
西安地区超长钻孔灌注桩竖向受荷承载性能及变形机理的研究
14.
Research on Vertical Bearing Capacity Tests and Settlement Calculation Methods of Super Long Bored Pile
超长钻孔桩竖向承载能力试验及沉降计算方法的研究
15.
Bearing and Deformation Characteristics Analysis of Long Single Bored Pile under Vertical Loading
竖向荷载作用下钻孔灌注长桩单桩承载变形特性研究
16.
Study on bearing behaviors of long bored piles in the heterogeneous strata
非均质地基土条件下的钻孔灌注长桩竖向承载性状分析研究
17.
Experimental Study on Vertical Bearing Capacity of Super-Length Post Cast Bored Pile in Wenzhou Soft Soil Region
温州地区软土地基超长桩底注浆钻孔灌注桩竖向承载力试验研究
18.
Study on Trajectory Measurement Technology of the Point-the-Bit Rotary Steerable Drilling System
指向式旋转导向钻具钻孔轨迹测量研究