Flow pattern and velocity field of air leakage in goaf.
采空区漏风流态及速度场。
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 gradual settlement above old goaf threatens the safety of surface buildings.
采空区造成地层缓慢沉陷，严重威胁地表建筑物的安全。
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。
The deformation of ruptured rock mass is the mostly causation of ground subsidence over goaf.
废弃采空区破裂岩体变形是导致地表沉陷的主要原因。
Having analysed the "test on the gas drainage under suction in goaf", the failure cause has been found.
通过对采空区抽放瓦斯试验进行分析，找出了试验失败的原因。
Gas overflowed in wood road 413 of this mine is through the link - roadway caused by goaf gas discrarging.
该矿413机巷后路瓦斯超限是采空区瓦斯通过联络巷泄漏所致。
The current progress and development trend in the study of safety theory of field flow in goaf are analyzed.
分析了当前采空区场流安全理论研究的最新进展和发展趋势。
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。
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。
UDEC simulation results show that the porosity of overburden rock fissure field in goaf and its curve is saddle-shaped.
UDEC模拟结果表明，采空区覆岩裂隙区域孔隙率曲线呈鞍状分布。
The analog simulation method is a important approach for people to study the inherent law of ground stability with goaf.
在实验室通过相似模拟手段来研究采空区的地基稳定性是人们探索其内在规律的重要途径。
The paper first determined the range of Zhongjiashan goaf based on using material-probe method and pit base investigation.
结合物探、坑底调查等方法对钟家山煤矿采煤区的现场勘察，确定采空区的范围。
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。
Based on the uncertainty measurement theory, a risk-evaluating and order-arranging model of mining underground goaf was established.
基于未确知测度理论，建立矿山采空区的危险性等级评价和排序模型。
By site geologic investigation, the paper evaluates stability of goaf, and takes relevant treatment measures of ground and structure.
通过现场地质勘测，对采空区的稳定性作出评价，并采取相应的地基、结构处理措施。
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。
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。
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 development and utilization of the goaf hydrops have practical significance for releasing the shortage of the water resources in North China.
开发利用采空区积水，对于缓解华北地区水资源紧缺的局面具有现实意义。
The shrink quantity, theory value and test result of retaining roadways along goaf are the same, this shows the exantness of the mechanics model.
可缩量、理论值与现场沿空留巷试验测结果相同，说明了这种力学模型的正确性。
This paper analyzes the factors influencing the goaf safety, and based on these, advances some effective methods of guaranteeing the safety of goaf.
分析了影响采空区安全的因素，在此基础上提出了保证采空区安全的有效方法。
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。
Through numerical simulation, the characteristics of goaf flow field and gas transportation under J-shape and U-shape ventilation systems were analyzed.
通过数值模拟，对比分析了J型通风和u型通风条件下的采空区流场及瓦斯运移特征。
The author in detail introduces application of pressure grouting penetration in treatment for foundation dent that has keen caused by goaf in the paper.
详细介绍了采用压力注浆法对采空区引起的公路路基塌陷进行治理的施工情况。
Directing to the problems existing in goaf roadway in soft rock roadway, find out the optimum solvent and make goaf roadway technology all_round way spread.
针对沿空送巷在软岩地区存在的几个问题，提出解决措施，找到解决问题的最佳办法，使沿空送巷技术得到全面推广。
Identifying the basic properties of mining fissure elliptic paraboloid zone and gas delivery law governing goaf represents an effective measure to control gas.
研究采动裂隙椭抛带的基本性质及其采空区瓦斯运移的规律，可以采取有效措施进行瓦斯治理。
Identifying the basic properties of mining fissure elliptic paraboloid zone and gas delivery law governing goaf represents an effective measure to control gas.
研究采动裂隙椭抛带的基本性质及其采空区瓦斯运移的规律，可以采取有效措施进行瓦斯治理。
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