查询词典 coal hole

The main products of Trump Card are all steel double level vacuum extruder, compact vacuum extruder, non-vacuum extruder and all sorts of necessary accessories, such as JKY60/60-4.0, JKB50/45-3.0, JKR45/45-2.0, JKRJ45/45-2.0, GS80×60, SJJ300×50, ZQT650×200, ZQP24 and so on. The third generation of all steel double level vacuum extruder is widely applied to making various rigid plasticity and semirigid plasticity extrusion of load-bearing and non-load-bearing hollow bricks that its hole ratio is 25%-70%, from low-plastic materials like clunch, shale, coal gangue and coal powder.

乐山市泰辉机械制造有限公司制造的产品：JKY60/60—4.0，JKB50/45—3.0，JKR45/45—2.0，JKRJ45/45—2.0，GS80×60，SJJ300×50，ZQT650×200，ZQP24等系列全钢双级真空，紧凑型真空，非真空制砖机组及烧结制品生产线各种配套设备、全自动码坯系统等，广泛适用于粘土，页岩，煤矸石和粉煤灰等低塑性原料生产孔洞率25％—70％的各种承重、非承重空心砖坯的硬塑、半硬塑挤出成形，烧结、自动码坯系统等。

The paper discusses main environmental geology problems caused by mining of coal, such as mining slump, land subsidence. Karst slump, soil hole slump and groundwater meagerness, pollution caused by mine water and coal gangue.

概述了淮南矿区采矿引起的负环境效应，如采矿塌陷、地面沉降、矿坑排水疏于引起的岩溶土洞渴陷、地下水枯竭、矿井水和煤矸石对环境的污染等。

Flame observation: If it shown yellow in flame cone, blue around, and the opposite wall could be seen through peep hole, that means the blending ratio of air and coal gas is ok. If air excess, it shown sky blue, bright, and the wall of combustion chamber could be seen clearly but dulling. If coal gas excess, it shown dark red, muddiness, and the wall of combustion chamber could be seen hardly.

1火焰观察：从窥视孔观察燃烧室火焰，如果火焰中心呈黄色，四周微蓝，透明，清晰可见燃烧室对面砖墙，则为空气煤气配比合适；如果空气量过多，则呈天蓝色，明亮耀眼，燃烧室砖墙清晰可见，但发暗；如果煤气量过多，则呈暗红，混浊不清，难见燃烧室砖墙。

5It is the first time to brought forward the idea that the relieved methane in protected coal seam and the goaf of the near coal seam is exploited according to drilling assurgent hole from the roof of the entry retaining.

运用煤层气卸压抽采原理，成功地在淮南矿区顾桥矿实施了地面钻井和留巷钻孔法抽采卸压煤层气的工程实践，初步建立了适合淮南矿区的卸压煤层气抽采模式。

When the flange hole of coal blower casing and inlet box is countersunk, the problem of connecting hole back spot facing can be effectively solved.

它可以有效地解决在锪煤气鼓风机铸铁机壳和进气箱的开箱法兰把接孔时，连接孔背面的锪平问题。

To increase lump coal ratio in stopes, a scheme is put forward for coal falling by loose pre-shearing millisecond blasting, and hole arrangement parameters and blasting parameters are adjusted.

为提高炮采面块煤率，提出了松动预裂微差爆破的落煤方案，并对布孔参数和爆破参数进行了调整。

By the measures such as measuring the risk tendency of underground pressure eruption, evaluating risk index of underground pressure eruption, observing electromagnetic radiation, water injection in coal seam, long drill hole blasting, roof broken in gob area etc., realized safe coal production.

近年来鹤岗矿业集团公司的南部5个煤矿相继发生冲击地压现象，且造成不同程度的财产损失，通过采用冲击危险倾向性测试、冲击危险指数评估、电磁辐射观测方法，采用煤体注水、深孔爆破、采空区断顶等解危手段，实现了煤矿的安全生产。

According to the hole processing in the high accuracy in the repair and machining of coal mine,Have the adjustment of curtting tool generally,disaster and efficiency are lowed and processed the problem that precision is hard to guarantee,Have designed,a kind of trimming bore hole arbor.

该装置利用结构简单的差动螺旋机构，通过斜块实现刀具快速、准确的微调整，达到调整方便、高精、高效。

The actual distribution of unload zone of coal seam ahead of working face can be shown by continuously testing the initial gas flow from coal seam during hole drilling, which can be used to forecast the outburst danger of coal roadway.

连续测定钻进过程中的初始瓦斯流量可以反映工作面前方卸压带的实际分布，从而准确地预测煤巷的突出危险性。

It is one of effective measures to guarantee success rate about multi-lateral horizontal well drilling to prevent hole collapse, coal structure and situ stresses are two main factors to effect hole forming.

摘要： 有效防止水平井段孔眼坍塌是煤层气多分支水平井钻井成功率的有利保障之一，而煤体结构和地应力是影响成孔的两大主要因素。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。