Combined with field tests and numerical simulation, the size of section pillar is proved to be reasonable and the feasibility of driving without section pillar is also studied.
同时通过实测与模型计算相结合，验算了区段煤柱留设尺寸的合理性，并在此基础上探讨了沿空掘巷无煤柱开采的可行性。
Shade the resulting surfaces in tangent continuity is not good enough all over the surface create more section along the pillar to guide more precisely the surface creation.
阴影所产生的表面相切的连续性不够好各地创造更多的表面沿节的支柱，以指导更精确的表面创造。
In the third section, three methods of filament division are presented: linearity division pillar division, helix division.
在第三节中提出了灯丝的三种分割方法：线形分割、柱形分割、螺旋模型模拟灯丝。
Sublevel caving method without sill pillar is adopted in the south section of Fengshan Copper Mine.
丰山铜矿南缘采区应用无底柱分段崩落法采矿。
In this thesis, based on the theory of mechanical vibration and the principle of infinite element analysis, the section of an enclosure pillar is optimized.
论文以材料力学、机械振动学理论和有限单元方法为基础，运用优化设计方法对立柱截面进行了优化；
When the mining area enter the end stage, the optimization design of final block section and uphill pillar recovery are important.
采区进入收作阶段，最后块段与上山煤柱回收的优化设计、合理开采尤为重要。
Whether the section coal pillar is stable or not is the key to safety of irregular blocks coal mining.
区段保护煤柱的稳定与否是不规则块段安全开采的关键。
Grasping the top, knurled section of the depth adjustment rod (Q), slide it up so that the TAB (EE) aligns with the desired depth of cut on the pillar scale (FF).
抓住深度调节杆(Q)的顶部，向上抽，使定位片(EE)的顶面对正柱形尺(FF)上希望的切削深度。
The continuous wall junctions are connected by the methods of junction pipe method, junction plate method and section steel pillar method and good effectiveness has been gained.
连续墙墙段接头采用接头管法、接头板法和型钢柱法，均取得了较好的效果。
Pillar Modeling Method, Surface Modeling Method, Single outline Section Modeling Method and Multi-outline Section Modeling Method are developed for building these four kinds of structure elements.
利用柱体构模、表面构模、单轮廓断面构模、多轮廓断面构模技术分别进行这四种类型岩体的三维构模。
Pillar Modeling Method, Surface Modeling Method, Single outline Section Modeling Method and Multi-outline Section Modeling Method are developed for building these four kinds of structure elements.
利用柱体构模、表面构模、单轮廓断面构模、多轮廓断面构模技术分别进行这四种类型岩体的三维构模。
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