查询词典 coal

The paper stated a gas movement process at the top even angle in seam roadway and coal mining face and the cause of gas accumulation in some coal area.

首先分析了瓦斯在井巷风流中的运移扩散方式，论述了煤层巷道及工作面上隅角瓦斯运移过程及其局部区域形成瓦斯积聚的原因，就目前所用的治理局部瓦斯积聚的措施进行了简要分

This paper based on the low gas permeability coal seam 416 stope working face of Tongchuan mineral bureau,we analyzed the mechanism of the hydraulic cutting seam to improve the gas permeability coal seam,by this study,it shows the hydraulic cutting seam technology is effectual measure and it is provided with nicer practically and capacious foreground.

文章以铜川矿务局陈家山煤矿低透气性416综放工作面为研究背景，深入研究了水力割缝增强煤层透气性的作用机理，试验表明了水力割缝的确是一种提高低透气性煤层瓦斯抽放的有效措施，并具有良好的实用性和广阔的推广前景。

According to the geological condition and geometrical characteristics and physical mechanical index of coal seam for large-section face of starting cut of Dafosi coal mine in Binchang mining area,the design of bolt with wire mesh is accomplished and the supporting parameters are given.

根据彬长矿区大佛寺煤矿煤巷大断面开切眼的地质条件、几何特征及煤层的物理力学指标，完成了锚网支护设计，给出了支护参数，利用FLAC软件对煤巷开切眼的稳定性进行了评价。

Some methods to monitor and forecast the rock burst have been held, such as critical point, deviation values. KBD5 apparatus has been used to monitor the seismicity and rock burst of 4# coal seam's working face which has high danger of rock burst in coal mine. Many times of rock burst danger were forecaste

采用电磁辐射监测仪对某矿具有严重冲击危险的四层煤工作面进行了矿震和冲击矿压危险监测，有效地预测出了多次冲击危险，取得了良好的效果。

In this paper,by analyzing ground behavior measure data from the working face N101 in Qinyuan coal mine,strata pressure laws of fully mechanized top-coal caving face in three-soft seam are discussed.

通过对陕西秦源煤矿N101综放面实际观测数据进行分析，得出了&三软&复杂结构煤层综放面矿压显现活动规律，并对支架的适应性进行分析。

Using RFPA2D-Flow stereo-gasses coupled system to simulate the process of gas draiange in lower air permeability coal seam by loose blasting,it interprets that loose blasting is a effective ways to increase air permeability in low air permeability coal seam .

运用RFPA2D-Flow固气耦合系统模拟了松动爆破抽放低透气性煤层内瓦斯的过程，解释了爆破松动是增加低透气性煤层透气性的有效途径，本文对松动爆破前后抽放过程中煤层内瓦斯压力和瓦斯渗流场的变化规律进行了数值模拟对比，为进一步理解瓦斯抽放、松动爆破增透机理等提供理论基础和科学依据。

Coal plants put into operation for fully mechanized mining equipment, machine boring machine, shearer, hydraulic support, hydraulic pillar reprint machines, scraper plane, belt machine, crushing machine, such as machinery and equipment repair and parts processing, and strive to become the northern part of Shanxi Province the largest coal-machine parts and repair store base, while at the same time enhance the Mine mining transportation equipment parts and repair capacity of processing capacity.

厂房投产后用于煤机综采设备的掘进机、采煤机、液压支架、液压支柱、转载机、刮板运输机、皮带机、破碎机等机械设备修理及配件加工，力争成为山西北部最大的煤机配件超市及修理基地，同时不断提升矿山采掘运输设备配件加工能力及修理能力。

The design mainly design about the spider of the load department , the scraper conveyer as well as the drive The main text first introduced each kind of type and the trend of development of coal loading-machine, it introduced coal loading-machine principle, next is design calculations about three main part, and carried on the intensity examination to the essential part.

正文中首先介绍了装煤机的各种类型和发展趋势，对本次设计中的装煤机原理进行了介绍，其次是三个主要部分的设计计算，并对关键部分进行了强度校核。

The results show that the variation in elevation angle of roof beam can be controlled by the equilibrium jack in moving support and the stress at different parts can be adjusted according to the variation of the support load in coal caving process, greatly improving the adaptability of the 2-leg shield support in top-coal caving working face.

分析结果表明，通过平衡千斤顶可以控制移架过程中顶梁仰角的变化，并可调节支架各部位受力以适应放煤过程中顶梁外载的变化，从而提高了两柱式支架对放顶煤工作面围岩活动规律的适应性。研究结果对于现场操作及新架型的改进都有一定的指导作用。

Aiming at the new economic mode of rising of coal rice,different of peak-valley price and price competition,the paper analyzes correlativity among electricity price, coal price and vacuum condenser and its effect on economical benefit of power generating plant through instance.

文章针对当今煤价攀升、峰谷电价不同、竞价上网的新的经济形式，通过实例分析了电价、煤价、凝汽器真空间的相互关系及其对发电厂经济效益的影响，在现场运行中具有很好的指导作用。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。