The coal roadway driving is a "bottleneck" problem of influencing and restricting the normal replacement of mining and driving in the outburst mines.
煤巷掘进一直是影响和制约突出矿井采掘正常接替的“瓶颈”问题。
The measurement method is demonstrated valid in outburst elimination by the examination of remnant gas pressure, pre-drainage rate and the zonal verification during the coal roadway driving.
残余瓦斯压力和预抽率的检验以及煤巷掘进期间的区域验证,均证明按该方法布置的预抽钻孔,消突效果有效。
The combined support with cable bolt wire mesh and shotcreting is applied in coal roadway in Xingan coal Mine of Hegang Mining Industry Group.
鹤岗矿业集团兴安煤矿在煤巷中应用锚索锚杆挂网喷喧支护,取得了较好的技术经济效果。
The excavation sequence is the key to the roadway stability in long-span full coal drift.
大跨度全煤巷道开挖顺序是关系到巷道稳定性的关键。
Most rock roof of roadway is sediment rock, so its intensity is low, the stratification is a common rock mass structure in coal mines.
煤巷顶板多数是岩体强度较低的沉积岩,层状岩体结构是沉积岩的主要特征之一。
The prerequisite of rock burst occurrence is that the elastic energy in coal and rock mass around coal mine roadway and stope has accumulated enough.
冲击地压发生的前提是矿山井巷和采场周围的煤岩体中储存了足够的弹性能。
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。
The numerical analogy has been adopted to study the mechanic features influencing stress distribution in coal and rock around the roadway in order to control rock burst disasters.
为了治理冲击矿压灾害,采用数值模拟方法研究了井巷周围煤岩体的力学特性对应力分布的影响。
This paper analyzes the problems appearing in the bolt support construction of coal roadway, and advances some solving measures.
分析了煤巷锚杆支护施工中出现的问题,提出了相应的解决措施。
The paper described the development plan, the selection of seam location and the arrangement methods of main roadway in Jinchang Coal Mine from the designing aspect under present geological condition.
在现有矿井地质条件下,从设计方面论述了晋昶煤矿的开拓方案、选择大巷层位及设计大巷布置方式。
The roadway manage, actual mining and support beside roadway in thin coal seam are introduced. Through planing reliable safety technology measures, better economic benefit has been achieved.
简要地介绍了薄煤层前进采煤的巷道布置、回采工艺及巷旁支护等,制定了切实可行的安全技术措施,取得较好的经济效益。
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。
Combining work practice, the paper focuses on the coal mine's adopting of anchor hollow bar supporting roadway mechanism, construction process and its technique parameters.
结合工作实际,重点介绍了煤矿采用端锚式注浆锚杆支护巷道机理、施工工艺及其技术参数。
The deformation feature of deep shaft coal roadway is analyzed, and the reason for many kinds of support failures is studied.
分析深井煤层巷道围岩变形特征和支护失效的原因,提出此类巷道的内外结构耦合平衡支护原理。
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。
Study was conducted on the roof of No. 3604S4 coal face and the actual mining roadway with fractals, and a few kinds of functional values of subsidence velocity of this face were obtained.
用分形对3604S4工作面和回采巷道顶板进行了研究,得到了该工作面下沉速度的几种分维值。
Tunneling machine is the most important device in mechanical tunneling of coal mine roadway, but it is operated by driver with hands.
掘进机是煤矿巷道机械化掘进中最重要的设备,目前仍由司机手动操作。
The horizontal distance X between roadway and the edge of its upper pillar is an important parameter for roadway layout in floor strata and adjacent coal seams.
巷道与上部煤柱边缘之间的水平距离X,是底板岩巷和邻近煤层巷道布置的重要参数。
The phenomenon of underground pressure and principle of surrounding rock control of deep shaft coal roadway are introduced.
分析深井煤层巷道围岩变形特征和支护失效的原因,提出此类巷道的内外结构耦合平衡支护原理。
Based on the occurring mechanism of slough rock burst, the mechanism to weaken shock with bolt support in coal roadway is analyzed.
从片帮型冲击矿压发生的机理出发,分析了煤层煤巷采用锚杆支护减冲的机理。
The main factor causing destruction of roadway in tectonic stress field is found to be the high tensile strain, which appears after the coal seam above haulage roadway is mined.
提出在构造应力场中,开采运输巷道上方的煤体使巷道产生拉伸形变是巷道破坏的主要根源。
An effort has been also made to diagnose the dynamic causes of displacement of the surrounding rocks and the occurrence of changes of bearing stress in roadway coal pillars.
分析了沿空留巷围岩移动的力学根源和巷道煤帮内支承应力变化的规律。
Finally, a calculation example was showed, and the results indicated that the roof separation critical value of gob-side roadway is more than that of solid-coal roadway.
最后根据一回采工作面的基本条件,试算了两类煤巷的顶板离层临界值,并与实际观测数据进行了对比和分析。
The bolting with wire mesh is commonly used actual mining roadway of the thick coal seam, and in some cases the cabling reinforcement should be considered.
采用锚网支护方式维护厚煤层放顶煤沿底回采巷道时,多数需要考虑锚索加固问题。
The results show that there are great differences in the stress of roadway surrounding rock, and the stress and strain in coal pillar while the fracture line of main roof locates in different places.
研究表明,基本顶断裂线位于不同位置时,巷道围岩应力、煤柱应力及应变差异较大。
There are great differences among the strengths of roadway roof strata with different lithological characters; and the strata strengths are also different in various coal mines.
新汶矿区巷道顶板不同岩性的岩层强度相差很大,不同矿井的岩层强度也存在明显差别。
There are great differences among the strengths of roadway roof strata with different lithological characters; and the strata strengths are also different in various coal mines.
新汶矿区巷道顶板不同岩性的岩层强度相差很大,不同矿井的岩层强度也存在明显差别。
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