坚硬顶板,hard roof英语短句,例句大全

坚硬顶板,hard roof
1)hard roof坚硬顶板
1.Numerical Simulation of hard roof processing step;坚硬顶板处理步距的数值模拟
2.Numerical simulation of moving features of hard roof with three-dimensional discrete element method and nonlinear dynamic analysis;坚硬顶板运动特征的数值模拟及非线性动力学分析
3.Numerical simulation study with 3DEC on impacted movement of hard roof in manless working face extraction;无人工作面开采坚硬顶板冲击运动的3DEC数值模拟研究

英文短句/例句

1.Study the technique of caving hanging roof in the condition of hard roof of room-and-pillar mining.;房柱式开采坚硬顶板条件下悬顶放顶技术研究
2.STUDY OF CONTROL CAVING METHODS AND REASONABLE HANGING ROOF LENGTH ON HARD ROOF坚硬顶板控制放顶方式及合理悬顶长度的研究
3.Technology and Control of First Roof Caving at Fully Mechanized Coal Face with Hard and Massive Overlying Strata厚层坚硬顶板综采工作面初次放顶技术管理
4.Research on Reasonable Hanging Arch Length of Hard Roof in Fully Mechanized Coal Mining Face综采工作面坚硬顶板合理悬顶长度研究
5.Roof Control Design and Practice of Very Hard Roof in Coalface Instead of Knife and Pillar Mining Method in Mentougou Mine-门头沟矿坚硬顶板取消刀柱顶板控制设计及实践
6.The application of numerical simulation in big dip angle and hard roof control数值仿真在大倾角坚硬顶板控制中应用
7.The Research of Goaf Gas Emission Law about Hard Roof Comprehensive Mechanized Coal Mining Face;坚硬顶板综放工作面采空区瓦斯涌出规律研究
8.Prevention of Shear Failure of Hard Roof in Fully Mechanized Caving Face;预防综放面坚硬顶板超前剪切破坏方法
9.Wu 8 seam roof cycle hard to pressure on the impact of gas emission and response坚硬顶板周期来压对瓦斯涌出的影响与对策
10.Study on site test of directional hydraulic fracturing of hard roof定向水力致裂坚硬顶板的现场试验研究
11.Simulation of Hard Roof Weakening Ahead of Working Face with Fully Mechanized Caving坚硬顶板综放工作面超前弱化模拟研究
12.Rock pressure of high angle thick coal seam by numerical calculation大倾角坚硬顶板厚煤层矿压规律数值计算
13.Technological Study and Practice on Safe and Efficient Mining Under Hard-Roof Condition坚硬顶板条件下安全高效开采技术研究与实践
14.Plowability of plow mining on thin and soft coal seam with hard roof坚硬顶板松软薄煤层刨煤机开采可刨性研究
15.Research and application of deep hole advance pre-blasting in hard roof of steeply dipping seam mining大倾角坚硬顶板深孔超前预爆破研究与应用
16.A study on the relations between hard roof strata behaviors and gas inrush坚硬顶板矿压显现与瓦斯涌出关系研究
17.Determination of Pressure Step for Hard Roof at XV2306 Working Face in Wangtaipu Coal Mine王台铺煤矿XV2306工作面坚硬顶板来压步距确定
18.Research on Non-coupling Charging Coefficient in Softening Hard Roof with Deep-hole Blasting深孔爆破弱化坚硬顶板不耦合系数研究

相关短句/例句

hard top-coal(roof)坚硬顶煤(板)
3)hard roof and hard floor坚硬顶底板
4)non-hard roof非坚硬顶板
1.As the exploit strength increasing, rock-burst may occur under the condition of non-hard roof.即使是非坚硬顶板条件,当开采强度加大时,也将发生冲击地压灾害。
5)Hard roof and hard seam坚硬顶板与坚硬煤层
1.Fully mechanized coal caving mining technology with conditions of hard roof and hard seam in Datong Mining Area;大同矿区坚硬顶板与坚硬煤层条件下综放开采
6)compound hard roof复合型坚硬顶板
1.In view of the compound hard roof of Six picks the area,through carrying on the comprehensive servation and the mechanics analysis appeared to pressure appears of the working face production process.针对复合型坚硬顶板的六采区,通过对工作面生产过程的矿压显现进行了全面观测和力学分析。