1) narrow and small coal pillar
窄小煤柱
1.
During the period of caving coal mining,the coal tunnel pressure is greater with leaving narrow and small coal pillars,the support of driving tunnels along goaf is more difficult during the period of mining.
在放顶煤开采过程中,留窄小煤柱全煤巷道矿压较大,沿空掘巷在回采过程中支护较为困难,运输顺槽支护方式的确定更为显得重要。
2) narrow coal pillar
窄煤柱
1.
Numerical simulation on the principle of supporting roadway with narrow coal pillar;
窄煤柱护巷机理的数值模拟分析
2.
In order to solve this problem,this paper proposes that narrow coal pillars are to be left to protect the main drift or roadways.
针对薄煤层开采中,沿煤层开掘的巷道留煤柱护巷造成大量的煤炭储量浪费问题,提出留设窄煤柱维护大巷技术,巷道采用锚喷网支护,延长了矿井服务年限和提高了矿井整体效益,可在类似条件下推广应用。
3) width of narrow pillar
窄煤柱宽度
4) The optimized Width of Narrow Coal Pillar
窄煤柱最佳宽度
5) driving along gob-side entry with small pillar
窄煤柱沿空送巷
6) small pillar
小煤柱
1.
Numerical simulation of small pillar stress concentration areas borehole pressure relief effect
小煤柱应力集中区钻孔卸压效果的数值模拟
2.
Under the condlition of medium-thick seam composite roof,the small pillars size and roadways support parameters are reasonably determined.
在中厚煤层复合顶板条件下,合理确定小煤柱尺寸及巷道支护参数,可提高煤炭回收率,保证巷道正常掘进和在服务期间内的使用。
3.
In view of the conditions tunneling small pillar along the goaf,introduces the situation of using anchor cable net and uity supporting and analyzes the application effect.
针对沿空掘进小煤柱巷道的条件,介绍应用锚索网+工字钢联合支护的情况,分析了应用效果。
补充资料：窄小
1.狭隘;狭小。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条