西班牙 riosa╟olloniego煤矿瓦斯预防和治理-------外文文献翻译.doc

Underground coal mines have always had to control the presence of different gases in the mining environment. Among these gases, methane is the most important one, since it is inherent to coal. Despite of the technical developments in recent decades, methane hazards have not yet been fully avoided. This is partly due to the increasing depths of modern mines, where methane emissions are higher, and also to other mining-related circumstances, such as the increase in production rates and its consequences: difficulties in controlling the increasing methane levels, increasing mechanization, the use of explosives and not paying close attention to methane control systems.
The main purposes of this paper are to establish site measurements using some critical parameters that are not part of the standard mining-control methods for risk assessment and to analyze the gas behavior of subvertical coal seams in deep mines in order to prevent gas incidents from occurring. The ultimate goal is the improvement in mining conditions and therefore in safety conditions.
For this purpose, two different mines were instrumented for mine control and monitoring. Both mines belong to the Riosa–Olloniego coalfield, in the Asturias Central Basin, Spain and the areas instrumented are mined via subhorizontal sublevels at an actual depth of around 1000 m under the overburden of Mount Lusorio.
During this research, a property favoring gas outbursts was site measured for the first time in an outburst-prone coal (8th Coalbed), gas pressure and its variations, which contributed to complete the data available from previous characterizations and to set some guidelines for assessing the potential outburst-prone areas. A gas-measurement-tube set has been designed for measuring gas pressure as well as its variation over time as a result of nearby workings and to calculate permeability.
The paper establishes the effect of overlapping of works, but it also shows the efficacy of two preventive measures to be applied: high pressure water infusion and the exploitation of a protective coal seam (7th Coalbed), that must be mined preferably two complete sublevels before commencing the advance in the outburst-prone coalbed. Both measures constitute an improvement in the mining sequence and therefore in safety, and should be completed with a systematic measurement to control the risk: gas pressure in the 8th Coalbed in the area of influence of other workings, to establish the most suitable moment to renew the advance. Further researches could focus on ascertaining the permeability, not only in mined areas but also in areas of the mine that are still not affected by mining work and on tuning more finely the ranges of influence of overstress time and overlap distance of the workings of the 7th Coalbed in the 8th Coalbed.


摘要
矿井中有很多气体影响着煤矿工作环境，在这些气体中，甲烷是重要的，他伴随着煤的产生而存在。尽管随着科技的发展，但我们始终无法完全消除。瓦斯气体随着开采深度的增加而增多。甲烷排放量高的地方，也适用于其他采矿有关的情况，如在生产率和它的产生的后果，增加深度：在控制日益增加的甲烷量的方面有很多困难，主要是提高机械化，使用爆炸品，而不是密切关注瓦斯控制系统。
本文的主要目的是建立实地测量，使用一些不标准的采矿控制风险评估方法的一部分，并分析了深部煤层瓦斯矿井直立的行为，以及防止发生瓦斯事故的关键参数。最终目标是在开采条件的改善，提高矿井的安全性。
为此，设置了两个不同的地雷仪表进行矿井控制和监测。这两个煤矿属于Riosa- Olloniego煤田，在西班牙阿斯图里亚斯中央盆地。仪器是通过subhorizontal能级开采的，一个约1000米的山Lusorio根据实际深度覆盖的地区。
在本研究中，一个是有利于瓦斯突出的易发煤（第八层），测定其气体压力及其变化，这将有助于提供以前的特征以完成数据，并评估第一次测量的网站潜在的爆发多发地区提供一些指导。本文运用一个气体测量管设计了一套用于测量一段时间由于附近的运作的结果，计算低渗气压力以及其变化..