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coal seams

网络煤层；号煤层

coal seams

coal seams

coal seams

煤层

WorldWideScience.org Topics : C ... coal reserves( 煤储量) coal seams( 煤层) coal tar( 煤焦沥青) ...

号煤层

4号煤层,No.4 coal... ... ) No.27 coal seam2 7号煤层 ) No 1 and 5 coal seams1 ,5-号煤层 ) No.9 coal seam9 号煤层 ...

1

Coal is usually found associated with sandstones, carbonaceous siltites and coal seams .

通常找到煤炭伴生与砂岩、碳质的硅和煤层。

2

The transmissivity of coal seams was found to be be one or two orders of magnitude greater than that of associated rock types.

煤层的透射率被发现是大于普通岩石一个或两个数量级。

4

The extinct trees of the genus Lepidodendron were once distributed widely and contributed largely to the coal seams of the Carboniferous .

已灭绝的鳞木属植物曾经分布广泛，它是石炭纪煤层的重要组成部分。

5

With the increase of the depth of coal seams mined , rock bursts will easily occur in gateways with fully-mechanized sublevel caving mining .

随着煤矿开采深度增加，综放开采回采巷道易发生冲击地压危害。

6

The author introduces an effective method to carry out correlation of coal seams by application of sulphur content in coal .

利用煤中硫分进行煤层对比是一种行之有效的辅助方法。

7

The deep coal bed is ignited with much water and high pressure in coal seams , and need to be moved in the channels .

深部煤层气化点火时是在煤层存在一定的水和压力下点火，同时还要能在通道内实现移动点火。

8

Oilfields, natural-gas fields, aquifers filled with seawater and depleted coal seams are all possibilities.

油田、天然气田、蓄水层和废弃煤层都可以采用这种方法。

11

The largest shallow coal field in the world is in west China. The coal seams have thin roof and thick sandy overburden .

西部地区拥有储量最大的浅埋煤田，煤层顶板主要特点是基岩薄，地表为厚砂土层。

12

Xuzhuang coal mine often encountered the hazard of water from Taiyuan Formation, as it mines the deep buried coal seams .

徐庄煤矿深部煤层的开采一直经受着太原组灰岩水的威胁。

13

The coal seams are thick and distributed widely and the coal bed methane reserving conditions are better in Yilan coal field .

依兰煤田煤层厚、煤层气储层分布广，储集条件较好。

14

Coal mines in Donetsk, Ukraine are mainly composed of thin coal seams containing rich methane gas , thus difficult to exploit .

乌克兰顿涅茨克州的煤矿主要由薄煤层构成，尽管富含煤层气（甲烷气），但是，开采难度大。

15

The method of gas drainage contains : self coal seam gas drainage, near coal seams gas drainage, and goaf gas drainage.

前言：瓦斯抽放的方法有本煤层抽放、邻近层抽放和采空区抽放。

16

There are many coal seams , the wide coal seams distribution area and the better reserving condition in Jixi basin .

鸡西盆地煤层多、煤层气储层分布广，储集条件较好。

17

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20

Generally transmissivity of coal seams was found to decrease with depth .

一般煤层的透射率随着深度减少而减少。

22

Based on Darcy's law , one kind of the equation for gas flow in coal seams has been corrected and reestablished in this paper .

本文在达西定律基础上，修正了一类煤层瓦斯流动方程。

23

Coal seams , like oilfields , vary hugely in their geology.

而且就像油田一样，煤层在地底下变化也非常巨大。

24

The first choice for precaution of pressure bump is water injection into coal seams .

煤层注水是世界上煤矿矿井防治冲击地压的首选措施。

25

In order to forecast and prevent gas discharging quantity , it must grasp discharging rule of coal seams gas and gas discharging quantity .

为了有效地进行瓦斯涌出量的预测和防治，就需要掌握煤层瓦斯的解吸规律和可解吸瓦斯量。

26

The mine has low gas and no danger of coal-dust explosion . The main coal seams that is designed has three layers.

井田内地质构造比较简单，主要为纵贯井田东西的天仓向斜，属于低瓦斯矿井，无煤尘爆炸危险；

29

Coal miners; coal seams ; coal haulers.

煤矿工；煤层；运煤工。

30

Coal seams intermixed with iron ore .

煤层和铁矿混杂在一起。

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