To seek the technique method for mining the thick seam in high gas and outburst mine safely and effectively,experimental researches are carried out on the laws of gas emission coal roadways such as protective seam,protected seam and beforehand drainage seam while excavating in the thick seam at the same area in high gas and outburst mine,and the causes are anslyzed.
研究结果表明:采用大面积预抽煤层瓦斯的方法可以有效降低煤层瓦斯含量、保证巷道掘进安全。
Application of confirmation model for reasonable pre-draining time is introduced in this paper.
主要介绍了合理预抽期确定模型在焦作矿区的应用。
The Second Prospecting Team of Shandong Coal Geology Bureau
采前瓦斯预抽系统固井工程施工工艺
Research of Numerical Simulation of Process of Mine Gas Pre-draining by Pinnate Boring
羽状钻孔预抽矿井瓦斯过程的数值模拟研究
Study on Rational Borehole Space of Crossed Boreholes for Gas Pre-drainage
预抽煤层瓦斯交叉钻孔合理孔间距的研究
Mechanism Research of Gas Drainage by Drilling Long Holes
井下预抽瓦斯定向长钻孔的合理性参数研究
Analysis on Gas Outburst Control Results of Gas Drainage with Large Diameter Borehole along the Seam
大直径顺层长钻孔预抽瓦斯消突效果分析
Research on Market Data Extraction and Forecast on the Web;
Web中的行情数据抽取与预测研究
Prevention of complications of liposcution with tumescent technique
肿胀技术脂肪抽吸术后并发症的预防
Prediction on Gas Emission and Gas Drainage base on Elevation
根据标高预测瓦斯涌出量和瓦斯抽放
While all tobacco smoking affects life and expectancy and health, cigarette smoking appears to have a much greater effect than cigar or pipe smoking.
尽管吸食各种烟草都会影响预期寿命和健康，但是抽香烟的影响要比抽雪茄和抽烟斗大得多。
The draw for the second phase of qualifying has been made in Bangkok.
预选赛第二阶段的分组抽签已在曼谷举行。
Drawing Oil Well Vitta Failure Mechanism and Accident Prevention Study;
抽油机井油管失效机理及事故预防的研究
Research on Mechanism and Preventive Measures of Fatigue Fracture of Tubing in Sucker Rod Pumping Wells;
抽油机井油管疲劳断裂机理和预防措施的研究
Prediction of Sucker Rod String Dynamic Characteristics and Computer Simulation Research for Rod Pumping System;
有杆抽油系统杆柱动特性的预测与计算机仿真
Study of Water Yield Prediction in the Underground Power House of Hong Ping Pumped Storage Station;
洪屏抽水蓄能电站地下厂房涌水量预测研究
Research on Protein Phosphorylation Sites Prediction and Rules Extraction;
蛋白质磷酸化位点预测与规则抽取方法研究
The Non- Sampling Errors and Counter Measures of Internet Surveys;
网络调查中的非抽样误差及其预防措施
Research on the Techniques of Interstitial Fluid Transdermal Extraction and Blood Glucose Prediction
组织液的透皮抽取与血糖预测技术研究
Research on Railway Ticketing Data Sampling and Short-term Forecast of Passenger Flow
铁路客票发售数据抽取及短时客流预测研究