易冒

π型钢梁在破碎易冒落顶板中的应用

Application of π type steel girder in broken easy caving roof

该矿体直接顶板为断层泥和糜棱状角砾岩，极易冒落。

Direct roof of the orebody consists of fault gouge and breccia , and is exceedingly easy to cave .

复合顶板极软煤层巷道是围岩变形剧烈且顶板易冒落极难维护的巷道。

The bolting support principle is introduced to support roadways in extremely soft seam of coal mine with complex roof .

尤其是解决了普通单螺杆排气挤出机易冒料和产量波动的缺点，以及由此所造成的操作范围窄、适用性差等问题。

It thrashed out the defects of narrow operating and applicability that areresulted from the venting and the fluctuation of output on single-screwdegassing extruder .

顶板极易冒落，沿空留巷变形大，爆破开采时易崩倒工作面支架，不能满足安全、高效生产的要求。

Roof easy caving . Big deform for gob-side entry retaining . Blasting excavation does not meet safety and high efficiency production requirement for easy damaging forest .

陕京二线输气管道定向钻穿越永定河工程的特点是，地层松散，含水量低，黏结性差，定向钻穿越时易冒浆，不易成孔，砂层易形成沉砂包钻；

The characteristics of Yongding River crossing project with directional drilling in the second Shan-Jing gas pipeline are of loose stratum , low water content and poor adherence of soil , being prone to mud oozing and difficult bore formation , drill wrapped with soil in sand layer .

高韧性易自燃难冒特厚煤层综放开采技术研究

Research on fully mechanized top coal caving mining technology for ultra thick seam with high tenacity , easy to be combusted and hard to be falling

采用空间非线性动力有限元理论和准静态荷载法，以多雨地区铁路隧道易出现翻浆冒泥等病害现象的轨下铺底结构为研究对象，建立了铁路隧道铺底结构的动载计算模型。

Based on the eight nodes non-linear dynamic finite element theory and quasi-static load method , taking bedding structure of railway tunnel as a research objective , a dynamic load calculating model is established .