• The hard-and-thick strata ACTS both as the floor of coal seam No. 7 and as the roof of coal seam No. 9 in Zhangshuanglou coal Mine; and coal seam No. 9 is also hard.

    张双楼煤矿采煤层79煤,煤之间赋存唯一一层厚岩层,即9煤层直接也是7煤层的直接底。

    youdao

  • In the part of west flank of Lujiatuo minefield, the normal siltstone roof of coal seam 8 changed into coarse to medium-grained sandstone, and also had phenomenon of coal seam pinch-out.

    吕家井田西部分区域八煤层顶板正常砂岩变为粗中砂岩煤层变薄现象

    youdao

  • This paper puts forward support plan through analyzing strata behavior regularity of coal roadway in seam with soft roof, soft coal and soft floor.

    文章通过永华煤矿“三煤层矿压规律进行分析,提出支护方案

    youdao

  • The coal seam tunnel of compound mudstone roof of large span is the tunnel that is violent out of shape, roof is easy falling and safeguard is very difficult.

    跨度复合泥岩顶板煤层巷道围岩变形剧烈且顶板冒落维护巷道。

    youdao

  • Based on the analysis of gas source at the working face with "three-soft" unsteady coal seam, the authors introduce the principle and method of gas suction by roof-rock drilling.

    前言:通过“三软”不稳定煤层采煤工作面瓦斯来源分析介绍采用顶板岩石钻孔放解决瓦斯问题的原理方法

    youdao

  • During the initial excavation, the tender coal seam workings in deep seam in Nantun Colliery takes on slocking of roof, with breaking-out in bulk coal and surrounding rock failure.

    屯煤矿深部松软煤层巷道掘进过程顶板破碎,伴有大量顶煤冒落且围岩破坏严重。

    youdao

  • The coal seam roof of Huojitu mine is the burnt rock, which is the water impregnated aquifer, is dangerous to mine safety.

    活鸡矿井顶板充水含水层,直接威胁着矿井的生产安全。

    youdao

  • First, based on similar material model test, top coal cave-in characters in steep and thick seam were studied as well as failure law of main roof and features of surface subsiding.

    首先利用相似模拟实验研究了急斜特煤层顶煤冒落特征顶板破坏规律以及地表下沉特点

    youdao

  • The practices showed that the complex roof of C4 seam was effectively controlled. Therefore the roof control problem of the coal mining face under the complex roof conditions was solved.

    实践应用表明C4煤层复合顶板得到了有效控制解决了复合顶板条件回采工作面的顶板控制问题

    youdao

  • In coal-seam roof, distributary channel sedimentations mostly are vertical accretion, and the continuity of sand body evolvement is well.

    顶板分流河道沉积作用垂向加积作用为主,岩体演化具有较好的继承性;

    youdao

  • The II3123 face is a light type caving face of three-soft coal seam. the roof is cracked, sloughing and roof fall often occur.

    前言: 石台煤矿II3123工作面“三软”煤层放工作面,顶板破碎易掉,片帮、冒顶时常发生

    youdao

  • The results show that the abutment pressure distribution on coal pillar is the direct reflection of abutment stress induced by mining on the interfaces of coal seam and immediate roof.

    研究结果表明煤柱支承压力分布开采影响岩层相互作用结果,是开采引起集中应力煤层直接界面直接反映

    youdao

  • While the coal seam hardness is definite, the increasing velocity of the width of the plastic zone of pillar decrease with the increase of interfacial bond property between coal seam and roof.

    煤层硬度一定时随着煤层底板界面粘结性能提高煤柱塑性宽度增长速度递减;

    youdao

  • The stability of seam roof is one of the most important factors that influences the safety of coal extraction.

    煤层顶板稳定性影响煤层回采工作安全重要因素之一

    youdao

  • The stability of seam roof is one of the most important case that influences the safety of coal extraction.

    煤层顶板稳定性影响煤层回采工作安全重要因素之一

    youdao

  • The testing results of working face coal samples and roof impact tendency indicated that the coal seam belongs to high impact tendency and has pressure bumping possibility.

    工作面顶板冲击倾向性测试结果表明煤层属于冲击倾向性煤层,具有发生冲击矿压的能力。

    youdao

  • Soft roof and floor of coal seam could be easily damaged while support was not timely and strength was not enough, so overall support was needed for laneway with strong support strength.

    煤层顶底板极松软,若支护及时强度不够极易破坏巷道进行整体支护具有较大的支护强度。

    youdao

  • The roof of the 2 1 coal seam in Gaocheng area of Dengfeng Coal Field is constitute of tectonite rock formed by gliding.

    河南登封煤田郜城井田1煤层顶板滑动构造形成构造

    youdao

  • Based on the continuing interpolation grid of the roof and floor of coal seam, a new resolution to fault is put forward on 3d visualization deposit modeling.

    基于煤层底板整体插值,实现了可视化矿床模型断层处理。

    youdao

  • Based on the continuing interpolation grid of the roof and floor of coal seam, a new resolution to fault is put forward on 3d visualization deposit modeling.

    基于煤层底板整体插值,实现了可视化矿床模型断层处理。

    youdao

$firstVoiceSent
- 来自原声例句
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定