通过分析近距离保护层开采、水力掏槽法及边抽边掘技术防治煤与瓦斯突出原理及实践应用,从而有利于煤与瓦斯突出矿井选择合理有效的防突技术。
The paper researchs the principle of protective seam mining, hydraulic slotting method and executing-digging technology to avoid risk of coal-gas outburst, and its practices in coal mine.
根据渗流理论,本文对沿层抽放钻孔周围的瓦斯渗流问题进行了电模拟实验研究。
According to seepage theory, the gas seepage from drainage hole along coal seam is studied by means of electrical simulation experiment.
石油溶液是以沥青质为胶束中心,胶质为溶剂化层,瓦斯油分为分散介质的胶体分散体系。
The petroleum solution is a colloidal dispersion in which the asphaltene comprises the micellar nucleus, the resin forms the solvation layer and the remaining gas oil ACTS as the dispersing medium.
本论文主要是针对远程下保护层开采条件下,对底抽巷上向穿层钻孔抽放远程卸压瓦斯技术进行了深入的研究。
This paper mainly researches on the technique of draining long distance pressure relief gas in bed plate tunnel under the circumstance of mining protective coal seam.
突出煤层卸压后用钻孔瓦斯涌出初速度进行工作面预测和效果检验时经常超过突出临界值,造成开采保护层后煤层突出危险性更大的现象。
The main factors affecting the initial speed are studied and the causes of initial speed from borehole gas emission often exceeding limit theoretically explained.
保护层开采时,对被保护层的瓦斯治理是一项非常重要的工作。
When the protective coal seam is mined, the gas management on the protected coal seam is a very important job.
前言:介绍了在被保护层底板巷向保护层工作面施工下向穿层钻孔,抽采保护层工作面采空区瓦斯的具体做法,并对取得的效果进行了分析总结。
This paper introduced the technical of using drilling downward hole from working surfale in protective coat bottom tu pull out goaf gas, and the effects were analysed and summarized.
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。
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.
突出煤层顺层长钻孔的施工由于受到施工技术的限制达不到预定的深度,影响了瓦斯抽放效果。
The drilling operation of long holes along outburst coal seam usually can't reach their preset depth since it is handicapped by drilling techniques, which will thus influence gas drainage effect.
采用顶板岩层水平长钻孔抽放邻近层和采空区瓦斯是一项新技术,全面介绍了该技术研究的最新进展。
Applying long horizontal roof rock hole to drain the gas from adjacent seam and goaf is a new technique. In this paper, introduces the latest progress of this technique is introduced fully.
模拟结果可为保护层开采及被保护层卸压瓦斯抽采设计提供合理建议。
Simulation results may bring forward reasonable Suggestions for the design of protective layer mining and relief-pressure gas drainage.
消突效果检验后进行煤巷掘进,掘进期间通过对突出危险性指标和瓦斯涌出参数的分析,验证穿层钻孔区域预抽瓦斯消突技术的有效性;
The outburst risk index and gas gush feature are analysed during roadway progress. The result proves that the effectiveness of zonal gas pre-drainage by cross-measure boreholes.
消突效果检验后进行煤巷掘进,掘进期间通过对突出危险性指标和瓦斯涌出参数的分析,验证穿层钻孔区域预抽瓦斯消突技术的有效性;
The outburst risk index and gas gush feature are analysed during roadway progress. The result proves that the effectiveness of zonal gas pre-drainage by cross-measure boreholes.
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