The combustion characters of petroleum coke were between those of soft coal and anthracite .
石油焦的燃烧特性处于烟煤和无烟煤之间。
There are many kinds of forms of gas discharge, but the main form is soft coal seam gas discharge.
瓦斯抽放形式有多种，本煤层抽放是其主要形式。
However, with the extension of mining depth, the distribution of soft coal seam has been expanding.
然而，随着矿井开采范围的延深，松软煤层的分布范围呈不断扩展趋势。
It has good coal adaptability and is especially suitable for soft coal that has high tar content and big gas output.
煤种适应性强，尤其适用于焦油含量高，产气量大的烟煤。
The II3123 face is a light type caving face of three-soft coal seam. the roof is cracked, sloughing and roof fall often occur.
前言： 石台煤矿II3123工作面为“三软”煤层轻放工作面，顶板破碎易掉，片帮、冒顶时常发生。
As the soft coal seam is high gas content and low permeability. it has been difficult and key for the coal seam gas extraction.
由于松软煤层的瓦斯含气量高而透气性又极差，一直是本煤层瓦斯抽采的难点和重点。
There are three coal mines in Xin'an Coalfield. The Shanxi group irregular(2-1) coal seam has soft roof, soft coal and soft floor.
在新安煤田新建的三对矿井，主采煤层均为山西组2-1三软不稳定煤层。
After More burial and chemical transformation of the aging organic material, the peat becomes lignite, a very soft coal-like material.
当这些古老的有机物质经过进一步的埋藏和化学变化，泥炭就变成一种非常软的，像煤物质那样的褐煤。
The project takes pyrogenic dry distillation gas of soft coal in continuous retort as the fuel gas and produces ferroalloy coke and crude tar oil.
本项目是以烟煤在连续炭化炉中热解的干馏煤气作为城市燃气，同时付产铁合金焦和粗焦油。
This paper puts forward support plan through analyzing strata behavior regularity of coal roadway in seam with soft roof, soft coal and soft floor.
文章通过对永华煤矿“三软煤层”煤巷矿压规律进行分析，提出了支护方案。
As well as the related information of deformed soft coal in study area was got by this technology; dangerous districts of coal and gas outburst were forecasted in study area.
利用该技术获取了研究区的构造软煤资料，对研究区的煤与瓦斯突出危险性区域进行了预测。
Along with the mines toward deep level in China, the problems of soft rock are becoming more and more outstanding, especially controlling surrounding rock of three-soft coal seam.
随着我国煤矿开采越来越趋向深部，煤矿软岩问题便越来越突出，特别是三软煤层回采巷道的围岩控制问题。
At the present, the problem which is urgently to be solved in gas discharge is the drilling technology in soft coal seam gas discharge, especially the drilling technology of the deep hole.
目前在瓦斯抽放中急待解决的问题是软煤层瓦斯抽放的打钻技术，尤其是深孔打钻技术。
According to repairing supporting engineering of 1070 roadway in Wei Jia-di Coal Mine, stability failure mechanism of soft rock roadway engineering under complex stress conditions is analyzed.
针对魏家地煤矿1070巷道返修工程，分析了复杂应力条件下软岩巷道破坏机理。
To analyze the deformation characters of soft rock roadway in Fengshuigou Coal Mine, provide corresponding preventive measures and have made good technology economic results.
分析了风水沟煤矿软岩巷道变形的特点，提出了相应的防治措施，在软岩支护方面取得了较好的支护效果和经济效益。
Liangjia Coal Mine in Longkou mining area is a typical "three-soft" mining area, meeting many difficulties in roadway support.
龙口矿区梁家煤矿是典型的“三软”矿区，在巷道支护上遇到了非常大的困难。
That aiming at soft starter machinery of coal mine machinery equipment is analyzed and prospected. It is very important for coal mine machinery design, application and making.
针对煤矿机械设备的“软启动”技术现状进行分析及展望，对煤矿机械设计、制造及使用都是十分重要的。
Introduce the grouting reinforcement method of the soft rock of coal bin and fall area and analyze the fall reasons and the grouting result.
介绍了煤仓软岩及冒落段预注浆加固方法，分析了冒落原因及注浆效果。
Soft roof and floor of coal seam could be easily damaged while support was not timely and strength was not enough, so overall support was needed for laneway with strong support strength.
煤层顶底板极松软，若支护不及时、强度不够时极易破坏，需对巷道进行整体支护并具有较大的支护强度。
Because of crack structure, high gas amount, concentrated stress, soft and broken coal, it's very difficult for tunneling.
巷道在掘进时由于受断裂构造的影响，瓦斯含量大，应力集中，煤体松软、破碎，掘进困难。
This paper theoretically analyzes the mechanism of truss bolt system, and gives the design of coal roadway support according to the characteristics of the "Three-soft" coal roadway.
从理论上分析了桁架锚杆系统的作用机理，并针对“三软”全煤巷道的特点，制定了全煤顺槽桁架支护方案。
The opening stability in soft weak coal layer is important to the safe production in a mine.
软弱煤层巷道的稳定性对煤矿正常安全生产起着重要作用。
Used for truncating coal bed and breaking soft ore into pieces in mineral industry.
采矿工业中用于截断煤层和打碎矿石。
According to the realistic application of cement mixing pile in treating soft soil ground of powder coal ash, experiments constructions and testing have proved its practicability.
根据水泥搅拌桩在粉煤灰软基础中的实际应用，通过实验、施工和检测，证明水泥搅拌桩在软基中的实用性。
According to the realistic application of cement mixing pile in treating soft soil ground of powder coal ash, experiments constructions and testing have proved its practicability.
根据水泥搅拌桩在粉煤灰软基础中的实际应用，通过实验、施工和检测，证明水泥搅拌桩在软基中的实用性。
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