Then this method is used in the calculation of bolt support on coal goaf, and deformation of goaf is compared before and after bolt support.
并将这种方法应用于巷道锚杆支护的计算中，对锚杆支护前后围岩的变形进行了对比。
Test results of surface gas extraction technology from boreholes in the goaf in Zhangbei Coal Mine, Huainan Mining Group are introduced in the paper.
本文介绍了淮南矿区张北矿地面钻孔抽采采空区瓦斯技术的试验成果。
The mining with filling in goaf provides advantages for the rational mining of coal under buildings, railroads and water bodies.
采空区充填开采为“三下”煤炭的合理开采创造了条件。
Aimed at top corner gas management at the low gas blasting face, by upper goaf drainage with decompression in self coal seam, the experience is tried, the effect is obvious.
针对低瓦斯炮采工作面上隅角瓦斯治理，利用本层上采空区泄压释放，进行尝试实验，效果明显。
To enhance the efficiency of mine fire control, the technology of three-phase foam for preventing spontaneous combustion of coal in goaf was developed.
针对目前煤矿防灭火技术与材料存在的一些不足，研制了一种用于防治采空区煤炭自燃的三相泡沫材料。
The differences between the coal drawing face and non-coal drawing face are low stowing factor in the goaf, vigorous movement of roof, and high stress peak abutment pressure along the strike.
放顶煤工作面与非放顶煤工作面的区别是，采空区充填系数小，顶板岩层运动剧烈，走向方向超前支承应力峰值较大。
The result of this is referable to seismic safety in coal mine goaf.
该研究结果为煤田采空区的地震安全工作提供有益的参考。
The determination of damage height of superincumbent stratum of goaf has immense meaning for safety and reasonable exploitation of coal seam under water body, building and railway.
确定采空区上覆岩层破坏高度，对“三下”煤层安全、高效开采具有重要意义。
Combining with the actual situation in coal face, expound the key technology for large inclined Angle thin seam face so as to assure that slided coal can't come in goaf.
结合某矿采煤工作面实际情况，阐述了大倾角薄煤层工作面的关键技术处理措施，保证了煤下滑不窜入采空区。
The isolated island working face is surrounded with the goaf and its Surrounding coal column and goaf have a tendency of spontaneous combustion.
孤岛综放工作面四周均与采空区相连，其四周煤柱和工作面采空区易于出现自燃发火。
The stability of goaf-side roadways depends on not only the abutment distribution, but also the fracturing degree of the coal seam and rock strata alone the pillar width.
一侧采空巷道稳定性不仅与支承压力分布有关，而且与煤体受破坏程度有关。
The poor geological conditions that the tunnel confronts include high-pressure water, coal seam, goaf, gas, Karst and fault.
隧道穿越不良地质有：高压力水、煤层、采空区、瓦斯、岩溶、断层等。
Taking Chenzhuang residential quarter of Pingdingshan Coal Mining Bureau for example, the evaluation method of foundation stability over goaf was systematically studied.
以平顶山矿务局陈庄住宅小区为实例，系统地研究了老采空区上方地基稳定性的评价方法。
In goaf the float coal spontaneous combustion disaster affects seriously the safe production of the coal mine.
采空区浮煤自燃灾害严重影响了煤矿的安全生产。
Combined with coal characteristics in goaf of fully mechanized top-coal caving, determinant criteria and methods of hazard zone in goaf are determined by theory of coal spontaneous combustion zone.
本论文结合综放面采空区浮煤自然发火的特点，运用煤自燃危险区域判定理论，确定了采空区自燃危险区域的判定条件和方法步骤。
Survey of goaf is a problem demanding prompt solution in the engineering building and production of coal mine.
采空区探测是工程建筑和煤矿生产中亟待解决的问题。
The impact of coal mine goaf on seismic surface ground motion and its dynamic stress distribution around the tunnel was investigated.
研究了煤田采空区对地面地震动的影响以及采空巷道的动应力分布。
Surface borehole well is a simply and high performance method to drawing coal bed and goaf gas which controlling and making good use of the coal mine gas.
地面钻井抽采采动影响煤层及采空区瓦斯是进行煤矿瓦斯治理和抽采利用的有效方法。
Except the higher content of the suspended substance in the goaf hydrops of coal mine, the other indexes of the goaf hydrops can satisfy both industrial and agricultural water consumption.
煤矿采空区积水除了悬浮物含量较高外，其他指标可以满足工农业用水。
The paper introduced the principle of the EH4 image system and features, also introduced the exploration cases and results in coal mine goaf, fault and bore holes.
本文介绍了EH4电导率成像系统的原理、特点和该系统初次在煤矿进行的采空区、断层和钻孔位置等物探实例及其效果。
Among the safety problems of coal mines the goaf water and gas outburst are main problems.
煤矿安全的突出问题之一是突水事故、瓦斯突出。
It is pointed out that the methane emitted from the goaf and the coal face may be approximately taken as constants, but that from broken coal is a function of time.
作者指出，采空区和煤壁上的沼气涌出可以近似地作为常量，采落煤炭的沼气涌出则是时间的函数。
The result shows that Luokexiu foam gains the better effects in the control of wind leakage in the goaf of Chengzhuang coal mine.
结果表明，罗克休泡沫在成庄矿采空区漏风治理中取得了较好效果。
Goaf methane is one of the important emission source of coal mining working face, further study and treatment on goaf methane is necessary for coal industry.
采空区瓦斯涌出是工作面瓦斯涌出的重要来源之一，对采空区涌出瓦斯的研究和治理已成为煤炭工业瓦斯治理的重要研究内容。
Technology on retaining roadway on original site in goaf after coal mining face crossing rise is put forward.
提出一种回采工作面过上山采空区原位留巷技术。
The high abutment pressure on the integrated coal beside the roadway is one of the reasons to lead to floor heave and affect the stability of the roadway driving along next goaf.
实体煤帮的高支承压力是影响沿空掘巷稳定性的主要原因之一。
In the low gas face, under the premise of drainage gas with drilling holes, it has established utility to use upper goaf drainage with decompression in self coal seam.
在瓦斯涌出较小的采煤工作面，在不必钻孔抽放瓦斯的前提下，有一定的应用性。
In the low gas face, under the premise of drainage gas with drilling holes, it has established utility to use upper goaf drainage with decompression in self coal seam.
在瓦斯涌出较小的采煤工作面，在不必钻孔抽放瓦斯的前提下，有一定的应用性。
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