2) water barrier
隔水煤柱
1.
Research on critical size of water barrier in underground coal mine;
论井下隔水煤柱承压破坏的临界尺寸
3) waterproof pillar
防水煤柱
1.
On this basis,the 17116 first-thick seam extraction is successful mined with retaining 37 m waterproof pillar under increasing ceiling.
在此基础上对17116第一个厚煤层回采面成功地进行了留设37 m防水煤柱下的提高上限开采,取得了宝贵的开采经验和良好的矿井经济效益。
2.
The main target coal seam of Xieqiao Mine is directly covered with the Quaternary bottom gravels, whose impermeability affects the reasonable retainment of waterproof pillar.
第四纪底砾层直接覆盖在谢桥煤矿煤系地层之上,其隔水性能影响到防水煤柱的合理留设。
3.
In order to find the possibility and safety of coal exploitation under water with reduced waterproof pillar at upper limit,the vertical boreholes were drilled from the surface to detect overlaying rock failure.
为探求水体下采煤提高回采上限的可能性和安全性,利用地面探测钻孔进行覆岩破坏探测试验,试验表明了倾斜长壁综采条件下软弱覆岩的破坏发展高度较低,仅为常规数值的50%左右,为条件类似矿井缩小防水煤柱、提高采煤上限提供重要的参考。
4) waterproof coal pillar
防水煤柱
1.
UDEC simulation of the water-pouring probability in exploiting waterproof coal pillars under the conditions of thick loose bed and ultrathin overlying strata;
UDEC模拟厚松散层及超薄覆岩条件下开采防水煤柱覆岩突水可能性
2.
13-1 sublayer coal of the reducing waterproof coal pillars in No.
通过对潘一煤矿西二采区缩小防水煤柱块段13-1煤底分层赋存条件及其顶板岩性特征的研究,顶分层覆岩破坏规律的分析与研究,上覆松散含水层及基岩风化带的划分与评价,以及顶分层试采工作面出水及压架原因分析与研究,论证了本底分层块段缩小防水煤柱上综采的可行性。
3.
The author studies mainly on the characteristics of engineering geology about the zone of weathering overlying coal seam,the mechanism of cutting waterproof coal pillar and provides the reference for the coal mine with similar condition in cutting waterproof coal pillar.
对黄淮矿区古风化壳进行了详尽分析和简易分带，重点研究了开采煤上方风化带的工程地质特性，探讨了临界风化带开采缩小防水煤柱的机理。
5) water barrier pillars
防水煤柱
1.
Numerical simulation of influence of water barrier pillars for subsided column on rock failure in mining process;
陷落柱防水煤柱留设对围岩变形影响的数值模拟
2.
Static simulations at different time of working face with water barrier pillars are carried out with FLAC3D , pseudo-dynamic simulation for excavation process of moving forwards are made up of static simulations being arranged according to rank of moving forwards in time field.
采用FLAC3D软件进行了防水煤柱留设条件下采矿工作面推进不同时刻的静态模拟,按推进顺序在时间域上的编排即构成了推进全过程的准动态模拟,可视化的结果为采矿影响评估、工作面布置和煤柱留设等采矿决策提供了依据,模拟结果表明,应力集中系数均随推进距离增加而增加,推进距离超过一定数值后,应力集中系数趋于常数;防水煤柱对顶底板位移影响极大,煤柱留设少,底板位移大,较大的煤柱尺寸,对应较小的顶底板破坏深度和较小的应力集中系数。
6) water barrier
防水煤柱
1.
Methods of retaining water barrier and its stability analysis of steep working face
急倾斜工作面防水煤柱留设方法及其稳定性分析
2.
Analysing the shortcomings of the current method,this paper divedes water barrierinto two parts,i.
本文在分析了现有矿间防水煤柱留设方法存在问题的基础上，把煤柱划分为极限平衡区和弹性核两部分，提出应按弹性核留设防水煤柱。
补充资料：防隔
1.防范隔离。
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