查询词典 coal mine

Five typical coals of low-to-medium rank (Huolinhe brown coal, Majiata non-caking coal, Datong weakly caking coal, Huozhou gas coal, Lingshi fat coal) and their macerals are prepared. The molecular structure and the oxygen functional groups of the selected coals and their macerals are studied by means of the conventional coal properties analysis, chemical analysis and the advanced instrumental methods such as FTIR,XRIK 13C-NMR.N XPS. The molecular structure characteristics, regularities and the results are discussed. Additionally, the total oxygen content and distribution characteristics of different oxygen functional groups in the raw coals and their macerals are studied.

本文中选取了中低变质程度煤中的五种典型煤种——霍林河褐煤、马家塔不粘煤、大同弱粘煤、霍州气煤、灵石肥煤以及它们的不同显微组分作为研究对象，采用了常规的煤质分析、化学分析法以及先进的仪器分析法如傅立叶变换红外光谱、X射线衍射、高分辨固体~(13)C核磁共振谱~(13C-NMR及X光电子能谱等方法，全面地研究分析了所选煤样的惰质组、镜质组的分子结构及煤中氧的赋存形态，得到所选煤样惰质组分的分子结构特征及结构参数，分析比较了惰质组与镜质组在分子结构上的差异性，并讨论了惰质组分的分子结构特征及结构参数随煤变质程度的变化规律；同时，通过研究得到了所选原煤样及其显微组分中总氧含量及各种不同类型含氧官能团的含量分布特征。

Hung-fat, director of Shanxi Province Economic and Trade Bureau, the provincial government leadership has repeatedly stressed that the requirements of the province's power plants can no longer take the main source of electricity supply pressure at the local small coal kiln, the quality of the local small coal kiln no guarantee that the supply of instability, although a certain degree of price advantage, but said变就变is not conducive to security and stability of plant production, with the coal industry in our province to implement three major strategies of small coal mines and the implementation of resource integration, requested the power enterprises to adjust the coal supply structure as soon as possible, we must allow for large coal mines to account for more than 50%.

据山西省经委主任洪发科介绍，省政府领导多次强调，要求省内的电厂再不能把电煤供应的主要来源压在地方小窑煤上，地方小窑煤质量没保证、供应不稳定，虽有一定的价格优势，但说变就变，不利于电厂的安全稳定生产，随着我省煤炭行业实施三大战略，对小煤矿实施资源整合，要求电力企业要尽快调整煤炭供应结构，一定要让大矿供的煤能够占到50%以上。

The results indicate the mutual effect exists between the single coals, which could increase the maximum of thermal weight loss obviously and has a small effect on the temperature extent of the weight loss. The main pyrolysis production of coal is coke, but the main production of waste plastics is tar; the yield of water became decrease and the gas became increase by adding the waste plastics. And the CRI and CSR decreased with the ratio of waste plastics in coal. The main ingredients of tar from blend coal are aromatic hydrocarbon and alkane, while those of waste plastics are alkane and alkene. The result of co-coking with coal and waste plastics make the light tar and the aromatic hydrocarbon increase obviously. The combustible ingredient(CO、H2、CH4) of gas from co-coking with coal increase at different ratio; Co-coking with coal and waste plastics could increase the combustible ingredient and thermal value of gas.

结果表明，废塑料与煤混合物在煤的塑性温度区间内存在明显的相互作用，使最大热解失重峰迁移，热解速率变大，且随着废塑料配比的增加呈现规律性的变化；煤热解产物固体焦炭为主，而废塑料的热解产物以焦油为主，废塑料的添加使得总体焦炭和水产率下降，焦炉煤气和焦油的产率增加，即共焦化呈现出明显的&增油减水&效应；随着塑料添加量的增加，焦炭热强度呈现劣化趋势；废塑料代替瘦煤配煤炼焦可使其比例提高到3%而不影响焦炭的质量；纯煤焦化所得焦油以芳香烃类和烷烃类为主，而废塑料热解焦油以烷烃和烯烃为主；废塑料配煤炼焦，可使得的焦油呈现&环构化&和&轻质化&趋势；废塑料的添加可使煤气中的可燃组分(CO、H2、CH4)的含量均有不同程度的增加；废塑料配煤炼焦可以优化焦炉煤气的组成，增加煤气中的可燃组分，提高焦炉煤气的热值。

It is important to reduce the span of the hard roof to avoid its impact load on supports. However, at longwall top coal caving face, the periodical weight of roof is a main factor that crushes the top coal, which is beneficial to the top coal recovery. How to use the roof pressure safely is of crucial importance in top coal caving. Based on field monitoring, theoretical analysis of strata movement, the numerical model of compound structure of hard roof stepped cantilever and the top coal cantilever beam is built, and the parameters of the model are also determined. The elasto-plastic finite element method is used to analyze the effect of hard coal fracture under the abutment pressure of hard roof, and the cracking coefficient is defined according to the stress state of the element.

通过对岩层移动的现场观测，建立了&两硬&条件综放采场台阶悬臂—悬臂梁组合的煤岩组合结构力学模型，并以此煤岩结构为基础，建立&两硬&条件综放采场顶煤压裂的有限元数值模型，分析了坚硬顶板不同来压步距对坚硬顶煤的压裂效应，并确定了合理的支架阻力，从而对坚硬顶板进行有效的控制，消除坚硬项板对采场的冲击隐患，同时保证采场矿压对坚硬顶煤的有效压裂，达到提高顶煤回收率之目的，由此形成了坚硬顶煤、坚硬顶板条件下综放采场围岩控制的基本理论和方法。

At last,a preliminary visual 3D model system for coal seam is established based on coal seem 3D model and using OpenGL and Vc~6.0.Currently a part of research results has been applied to Mine Survey Geological Information System(MSGIS3.0),including constrained triangulation of coal bed suface, coal bed scaleboard contours with fault,part encrypt of contours,excellent turn of triangle,space encrypt,any direction profile of coal bed and so on.

论文的部分研究成果已经应用于煤矿地质测量空间信息系统MSGIS3.0中，主要表现为通过煤层底板表面的约束三角剖分，实现了煤层底板等高线的断层处理、等高线的局部加密、三角形优化、空间插值、任意切割煤层剖面等方面。

The company has advanced mechanical processing equipment, laboratory testing equipment, organized by the Coal Preparation experts and engineering and technical personnel of the technology development center and set up a national network of coal preparation expert consultants, and constantly develop new products, to have its own Eight national patent intellectual property rights, an international patents, products in the country has 24 provinces, municipalities and autonomous regions in a coal mine, coal preparation plant, coking plant, power plants, coal Cargo stations and extensive application has been exported to the United States, Russia, the Philippines , North Korea, Indonesia, Mongolia and other countries.

公司拥有先进的机械加工设备、检测化验设备，组建了由选煤专家和工程技术人员组成的技术开发中心，并成立了全国选煤专家顾问网，不断开发研制新产品，到目前已拥有自主知识产权八项国家专利，一项国际专利，产品已在全国24个省、市、自治区的煤矿、洗煤厂、焦化厂、电厂、煤炭集运站广泛应用并已出口到美国、俄罗斯、菲律宾、朝鲜、印尼、蒙古等国家。

The scheme design and recovery evaluation of low calorific value coal from gangue ;2. Research of switched reluctance motor control system for coal gangue hoist;3. To avoid wasting of coal resource,mitigate mixing of gangue into coal and raise benefit of mine,it is decided to carry out feasibility study of dry dressing of gangue -containing coal.

霍林河1#露天矿煤层赋存条件复杂，采用大型设备有绝大部分薄煤层无法分采，而造成煤炭损失，为了降低煤炭资源的浪费、减少矸石混入、提高煤矿的经济效益，决定对杂煤进行干式分选的可行性分析研究。

Coal-bearing seams in Shenyu mine area inclines northwest, the bedrock thickness on the coal seams increases northwest, and there are generally red soil water-resisting layer on the bedrock. To study on the coal-water friendly geological conditions for the water-resisting layer during the coal mining process, and to determine mining zones without causing obvious water table decline are an important approach to the water-conserving mining in the fragile ecological mine area of North Shaanxi.

榆神矿区含煤地层整体向北西倾斜，煤层上覆基岩厚度向北西方向增大，基岩之上普遍分布有红土隔水层，深入研究煤炭开采过程中不对含水层造成破坏的煤水共生地质条件，确定既可采煤、又可实现水位不明显下降的区域，是陕北生态脆弱矿区保水开采的重要途径。

Sponsored by the province's Coal Mines Administration Bureau and the Coal Mine Safety Inspection and Supervision Bureau, coal mining executives gathered in Guiyang, a modest-sized city (by China's standards) of more than three million people, to discuss how the latest foreign technologies could help degasify China's 2,000 coal mines, both improving mine safety and reducing China's global output of air pollution.

主办省的煤炭管理局和煤矿安全检查监察局，煤炭高层齐聚贵阳，适度规模的城市，超过300万人，以讨论如何国外最新技术，将有助于degasify中国的2000煤矿，促进矿山安全和减少对中国的全球产量的空气污染。

Sponsored by the province's Coal Mines Administration Bureau and the Coal Mine Safety Inspection and Supervision Bureau, coal mining executives gathered in Guiyang, a modest-sized city (by China's standards) of more than three million people, to discuss how the latest foreign technologies could help degasify China's 2,000 coal mines, both improving mine safety and reducing China's global output of air pollution.

主办全省煤矿当局和煤矿安全监察局、监察局、煤炭主管齐聚贵阳，适度规模的城市超过300万人，最新讨论如何degasify外国技术可以帮助中国两千煤矿既改善煤矿安全和减少我国全球产量的空气污染。

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但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48