研究了煤炭地下气化炉前方煤壁的周期性非稳态导热。
In this paper, the Periodic unsteady state heat conduction of coal wall in the front of underground coal gasification stove is researched.
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。
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.
煤柱支承压力峰值超前煤壁一定距离，且此距离随工作面长度加大而减小。
The peak value of abutment pressures on coal pillar had a certain distance to the wall, and the distance reduced when the working face width increased.
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。
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.
现场实践表明，大多数冲击地压发生在工作面煤壁前方超前支承压力范围内。
The in-situ practices show that most rock bursts occur in the front abutment scope ahead of the coal face.
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。
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.
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 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.
分析了平巷煤壁中预存裂纹尖端产生翼型张裂纹，形成薄煤层壳，薄煤层壳弯曲变形失稳引发冲击地压的机理。
The formation of thin coal shell that is formed by aerofoil cracks engendered at the tip of primary cracks in the entry's surrounding coal is analysed.
本文通过基础试验和现场观测，证明了煤巷掘进工作面煤与瓦斯突出是工作面煤壁盘形拉伸破坏的连锁反应过程。
Based on laboratory experiments and in-situ observations, it has been proved that outburst of coal and gas in in-seam drivage is a chain reaction process of disc tensile fracture in a working face.
通过考察选取不同时间步长和空间步长时煤壁瓦斯压力梯度的变化，提出了选取合适的时间步长和空间步长的方法。
The way to determine the suitable time and space interval is put forward by investigating the variation of gas pressure gradient on wall with several time and space intervals.
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 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.
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。
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.
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 stability of coal pillar of the short-wall mining was analyzed systemically by numerical simulation with the rock failure process analysis software (RFPA2D).
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。
While burning solid fuels, like biomass, coal and waste, wall-burning will occur to a certain extent.
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。
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.
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。
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.
文中得到的煤粉浓度对煤粉高温热壁面点火的影响规律，对于煤粉高温热壁面无油点火燃烧器的设计和运行提供了重要的理论依据。
Meanwill, the composition of flue gas changes evidently. The conclusion provides an important theoretical basis for design and operation on the oil-free ignition of burner with hot wall.
对落煤过程中平壁煤仓及截面形状分别为矩形、圆形的落煤管起拱的影响因素进行理论研究。
The influencing factors of coal arch camber in planomural coal bin and coal drop pipe with rectangular or circular cross section during coal drop are studied theoretically.
告成煤矿卸载站煤仓自建成以来，仓壁内出现涌水，造成仓内煤体粘结而难以放出。
Since the unload station coal bunker is built in Gaocheng coal Mine, water is obvious in the coal bunker, it is difficult to cave coal which is glued in the coal bunker.
长壁留煤柱支撑法开采的关键技术是区分两类不同性质的煤柱，即区内煤柱和区域间的隔离煤柱。
The key technology of longwall remaining coal pillars support mining is to distinguish two kinds of coal pillars of different character between regional coal pillar and isolated coal pillar.
对MG250/300-NWD型电牵引短壁采煤机，在大同进行工业性试验期间出现装煤效果差的原因进行分析，并提出改进建议。
The paper analyses poor loading effects of MG250/300-NWD electric-driven short-wall shearer during its testing period in Datong and puts forward the recommendations of improvement.
研究表明：煤粉气流在感应式加热无油直接点火器中的着火过程，是交变电磁场与高温壁面加热协同作用的结果。
The results show that: the ignition process is influenced both by the electromagnetic filed and the wall with high temperature;
研究表明：煤粉气流在感应式加热无油直接点火器中的着火过程，是交变电磁场与高温壁面加热协同作用的结果。
The results show that: the ignition process is influenced both by the electromagnetic filed and the wall with high temperature;
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