This paper mainly focused on the gas emission law of coal wall for the double tunneling working faces.
简要论述了煤巷综掘工作面瓦斯涌出的特征及规律，提出了综掘工作面瓦斯涌出的控制与解决措施。
Xinli Coal Mine changes the combination type, change and at adopt empty area side in to and in the coal wall side.
新立煤矿改变并对方式，变并在采空区侧为并在煤壁侧。
In this paper, the Periodic unsteady state heat conduction of coal wall in the front of underground coal gasification stove is researched.
研究了煤炭地下气化炉前方煤壁的周期性非稳态导热。
We have analysed the geological hydrology state of Lingquan open-pit coal mine, and proposed the coal extraction scheme of this mine F4 shear-zone coal wall.
分析了灵泉露天煤矿地质水文状况，提出了该矿f 4断层带煤壁回采方案。
The following research results are obtained: the top coal caving technique and increasing the resistance of the support can reduce the pressure on the coal wall.
研究表明：放顶煤开采、提高支架工作阻力可以减缓煤壁压力，煤体合理注水可以提高煤体黏聚力与抗剪强度，它们是防治极软煤层煤壁片帮的有效措施。
The result shows that the buoyant law of methane close to coal wall and the distributions of methane concentration by calculating are in accordance with that from experiment.
通过数值计算得出的煤壁瓦斯上浮和浓度趋势与实验结果一致。
Abstract : The coal wall grouting reinforcement technique is an effective measure to prevent and control rib spalling, and its key procedure is the selection of grouting quantity.
摘要煤壁注浆加固技术是防治煤壁片帮的有效措施，其关键环节在于注浆量的选择。
Several of the dark coal seams are visible along the sunlit southern wall of the pit (these may be more visible in the larger image version).
矿藏的南部有阳光照射，因此一些黑色的煤层接缝处清晰可见(在更大成像图片上这应该会更为清晰)。
The paper emphatically analyses the interaction between the wall stress characteristic and coal getting by impact on the longwall face, proposes the work pattern of coal breaking by impact.
看重分析了长壁采煤工作面煤壁应力特点和冲击劈裂式采煤的相互作用关系，提出了冲击破煤的作业方式。
The main transformed parts included water cooling wall, burner, coal saver, dust removing equipment, air suction machine and coarse powder separator.
主要改造部分有：水冷壁、燃烧器、省煤器、除尘设备、吸风机和粗粉分离器等。
This paper analyzes the calculating method for the wall thickness of the steel round coal bucket by using actual engineering example.
文章用工程实例，分析了钢圆煤斗的壁厚计算方法。
While burning solid fuels, like biomass, coal and waste, wall-burning will occur to a certain extent.
在燃用固体燃料，如生物质、煤、固体废弃物时，都存在一定程度的附壁燃烧现象。
Take new built mine seam for example, expound the advantages of leaving roadway fashion of concrete coal refuse cinder cement stone wall, and make analysis of technical economic.
以典型的新建煤矿煤层为例，阐述采用水泥煤矸碴胶泥砌筑石墙留巷方式的优点，并进行技术经济分析。
In this paper combined with actual projects the load of circle steel coal bucket, intensity and stability of tube wall and internal force of charging bucket are calculated and analyzed.
结合工程实例，对钢圆煤斗的荷载、其筒壁强度及稳定性、料斗内力等项均进行计算与分析。
An ultrasonic detector for wall rock crack is introduced which is able to detect coal mine underground wall rock looseness range and cracks.
介绍了一种超声波围岩裂隙探测仪，可用于探测煤矿井下围岩松动范围及裂隙情况。
The machines use products out of sand, stone, coal ash, cinder, coal gangue, ore tailings, ceramic, perlite and other industrial wastes processed into a variety of new wall materials.
本机所出产品可采用砂、石、粉煤灰、煤渣、煤矸石、尾矿渣、陶粒、珍珠岩等工业废料加工成各种新型墙体材料。
The mechanical model of key strata supported by coal pillar is set up according to the layout of coal pillars in the coalface of short wall mining.
根据短壁开采条件下保护煤柱的布设特点，建立由保护煤柱支承的关键层力学分析模型。
This paper introduced the principle and method of protecting borehole wall blasting and its application in the Dongxia and Weifang coal mine.
本文介绍了护壁爆破原理和方法以及其在东峡煤矿、潍坊煤矿的应用情况。
Impurities gathered in the duct wall affected the cooling effect of coal gas primary cooler.
我厂的煤气初冷器因管壁上结积杂质而影响其冷却作用。
The stability of coal pillar of the short-wall mining was analyzed systemically by numerical simulation with the rock failure process analysis software (RFPA2D).
采用岩石破裂过程分析软件RFPA2D系统，对短壁机械化开采的煤柱稳定性进行数值计算与分析。
The circle steel coal bucket is a main building in large thermal power plant, but in national and departmental standards there are no design articles about the wall thickness calculation.
钢圆煤斗是大型火力发电厂主厂房一个重要的建筑物，但现行的国家及部门规程规范中没有相应的计算煤斗壁厚的设计条文，故有必要对其计算方法作一综合性的探讨。
The optimum design of the process of producing build wall tile with kaolin coal gangue was carried out by cross design technique.
利用正交设计技术对云南高岭质煤矸石建筑墙地砖生产工艺进行了优化设计。
The wall heat flux distribution, two-phase flow field, temperature field and pulverized coal particles trajectory in furnace are described according to the calculation results.
根据数值模拟的结果，描绘出炉膛内的壁面热负荷分布、两相流场、温度场、煤粉颗粒轨迹等。
Through appearance inspection, wall thickness measurement, EDS analysis and X-ray diffraction, the corrosion cause of the coal economizer tube is analysed.
通过外观检验、壁厚测量、扫描电镜、能谱和X射线衍射，对省煤器管腐蚀原因进行了分析。
Burnt rock is come into being coal bed self-ignite and bring wall rock metamorphose and has special engineering geological characteristics.
烧变岩是煤层自燃引起周围围岩变质而形成的，具有特殊的工程地质性质。
Cause analysis of the water cooled wall tube burst focused on irrational points of design, excessive thermal loading, changes of coal category, burner defects and deposits in throttle valves.
着重从锅炉设计不合理、热负荷过高、煤种变化、燃烧器的缺陷及节流阀结垢等方面分析了水冷壁爆管的原因，指出必须进行锅炉改造。
The method of wall mining without pillars was first used in coal mine. In the metal mine it has not been used yet.
壁式无矿柱采矿首先是在煤矿推行，金属矿还未实现壁式无矿柱采矿。
The main insecure natural factors include: water, fire, gas, coal dust, wall collapse and so on. All of these are threatening the production safety of colliery enterprise.
其存在的主要不安全自然因素包括：水、火、瓦斯、矿尘、冒顶等，这些时时刻刻都在威胁着矿山企业的安全生产。
The main insecure natural factors include: water, fire, gas, coal dust, wall collapse and so on. All of these are threatening the production safety of colliery enterprise.
其存在的主要不安全自然因素包括：水、火、瓦斯、矿尘、冒顶等，这些时时刻刻都在威胁着矿山企业的安全生产。
应用推荐