discharging gas

There has already been a history of more than 50 years of gas drainage in our country,which has reached the advanced international standards from technology to the scale.

我国煤矿抽放瓦斯已有50多年历史,从技术到规模均达到世界先进水平。

For gas drainage at upper layer of mining area, the large diameter borehole drilled with directional drilling technology, in contrast with regular boreholes, can be guaranteed away from caving zone and most in gas concentration zone to discharge gas efficiently and safely.

对于通过上邻近层抽放瓦斯的煤矿,如果使用受控定向钻进技术施工大直径拐弯钻孔,和常规钻孔相比较,就可以在保证钻孔轨迹远离垮落带的同时,延长钻孔在卸压带的长度,实现高效安全抽放瓦斯。

In order to apply the top coal caving technology to the thick seam mining in a coal and gas outburst mine,a comprehensive gas drainage and outburst elimination technology with in-seam intensive boreholes and boreholes through seam was adopted for No.

为了在煤与瓦斯突出矿井厚煤层开采中应用放顶煤工艺技术,在鹤壁煤业集团公司五矿3302工作面采用了本煤层密集钻孔和穿层孔综合抽放瓦斯的消突技术,吨煤抽放钻孔量达到0。

Drilling technology of long hole using for discharging gas from coal seams;

抽放瓦斯顺煤层长钻孔施工技术

With depth increasing of discharging gas horizontal drilling hole in coal mine of our country,the ratio that drilling hole met soft rock is increasing.

泥岩、泥质页岩、泥质砂岩等地质软岩是煤系地层的重要组成部分,随着我国煤矿井下抽放瓦斯水平孔孔深的增加,钻进过程中遇到软岩的几率增加,因此分析软岩成孔影响因素并采取相应的钻进技术措施,是提高煤矿抽放瓦斯钻孔成孔率的重要研究内容。

Design and application of horizontal long borehole for gas drainage in seam roof;

煤层顶板瓦斯抽放水平长钻孔的设计与应用

Mechanism and application research of gas drainage in high level drainage tunnel by water sealing system;

水封式高位抽放巷道瓦斯抽放机理和应用研究

A preliminary study on water sealing tunnel drainage technology for gas drainage;

水封式巷道瓦斯抽放技术探讨

In this paper, layout parameters and technology of deep hole standing shot and methane drainage holes is discussed and implemented plan is designed, test in Panyi Coal Mine shows that it is a very good path to improve methane drainage efficiency by using deep hole standing shot technology in low permeability coal seam.

本文探讨了深孔松动爆破孔和瓦斯抽放孔的布置参数及工艺等 ,并设计了实施方案。

the author of this paper has come to the conclusion that the prospect of methane drainage in the mine is wide-with an ideal methane generation and store type.

瓦斯抽放的前景广阔;文中还对该矿瓦斯抽放与利用方式进行探讨。

Aiming at the problems of methane accumulation at upper corner angle in coal faces of U-type ventila-tion system,applying percolation theory,gas diffusion law and the law of mass conservation,the mathematical pattern of methane drainage from drills along roof strike was established.

理论研究与现场实践均表明:顶板走向钻孔抽放采空区瓦斯是解决高瓦斯工作面上隅角瓦斯积聚的一种行之有效的措施;顶板裂隙程度和状态是影响瓦斯抽放量的主要因素,将钻孔布置在适当的裂隙带中,瓦斯抽放浓度可达30%～90%,抽放负压可达50～55 kPa;数值模拟方法研究采空区瓦斯运移等工程实际问题是可行的。

This paper introduces the significance of the gas extraction in the safety in production of coalmine and the modes of the gas extraction,and advances some measures for improving the gas extraction such as pre-extraction of the gas,evaluating the extraction quality and strengthening the management of the gas extraction.

介绍了瓦斯抽放在煤矿安全生产中的意义和模式,提出了瓦斯预抽、抽放效果评价、强化瓦斯抽放管理等措施,促进瓦斯抽放。

Based on engineering practices and through calculating and analyzing theoretically, this paper summarized a good sealing drill hole method at injection water into seam or gas extraction and the problem of sealing drill hole has been solved.

本文以工程实践为基础 ,通过理论计算和分析 ,给出了煤层注水或瓦斯抽放时 ,一种有效的钻孔封孔方

Based on gas occurrence characteristics in Yangquan coal mining area,an extraction method with economic and technique feasibility is determined through correlation analysis of every kind of gas extraction indexes.

针对阳泉矿区瓦斯赋存特点 ,通过对比分析各类瓦斯抽放方式指标 ,从而得出经济、技术可行的最优抽放方式 ;阳泉矿区单一煤层采用 U +L型通风方式的工作面 ,大口径钻孔抽放方式是最佳选择和发展方向 ;15 #煤层综放工作面采用 U型通风方式和走向顶板岩巷抽放方式比较优

Experience of simultaneous extraction of coal and gas in coal mine is analyzed and an example is used to explain the significance of the organic combination of gas drawing underground with coalbed methan exploiting on ground surface.

分析了煤与瓦斯共采在煤矿井下的成功经验,并举例说明了井下瓦斯抽放与地面煤层气开发有机结合的重要性。

Design for drawing out gas with high position boring at coal face

轻放工作面抽放瓦斯高位钻孔的设计

Research on the technology of integrated interchange drilling to drainage gas

综合立体交叉钻孔抽放瓦斯技术研究

Pressure releasing and gas drainage with long bore hole in roof overburden of fully mechanized caving face

综放面顶板覆岩走向长钻孔卸压抽放瓦斯研究

Study on the Technology of Increasing Drainage in High Gas and Low Air Permeability Coal Seam;

高瓦斯低透气性煤层强化增透抽放瓦斯技术研究

Application of Gas Drainage Pump to Tunnel Gas Emission

瓦斯抽放泵在巷道排放瓦斯中的应用

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

The application of the gas drainage technology in Donghai coal mine is introduced, including gas drainage in close coal layer, gas drainage in goaf, gas drainage from coal, and local gas drainage.

介绍瓦斯抽放在东海矿的应用,抽放方式为邻近层抽放、空区抽放、本煤层抽放及局部抽放。

The use of adjacent area mine gas extraction data for the determination of rationalized time to extract coalbed methane

利用相邻区域瓦斯抽放数据确定煤层瓦斯合理抽放时间

Study on the Disposed Methane Drainage Technology of Fully Mechanized Caving Face

高瓦斯综放工作面卸压瓦斯抽采技术研究

Research on Accumulation Gas Control Measure in Drilling Field Using Gas Drainage at High Gas Mine

高瓦斯矿井抽放钻场瓦斯积聚治理方法研究

There are many kinds of forms of gas discharge, but the main form is soft coal seam gas discharge.

瓦斯抽放形式有多种,本煤层抽放是其主要形式。

The application of gas drainage technology in high Level drainage roadway in the Wulan Mine

高位抽放巷瓦斯抽放技术在乌兰矿的应用

The Theory and Its Application on Gas Drainage in Low-Permeability Coal Seams;

低渗透煤层瓦斯抽放理论与应用研究

ConstructionTechnology of Vertical Pipe Shaft forDraining Gas in TangAn Coal Mine

唐安煤矿瓦斯管道抽放竖井施工技术

Primary Study on the Effect of Gas Drainage on Coal Seam Water Infusion

瓦斯抽放对煤层注水效果的影响初探

Comprehensive Gas Drainage Technology Applied to Zhuzhuang Mine

瓦斯综合抽放技术在朱庄煤矿的应用

Analysis of Factors of Gas Drainage and Countermeasures

瓦斯抽放效果的影响因素分析及对策

Practice on Gas Suction at Roadway with 1018 Crossheading Floor in Jianxin Colliery

建新矿1018顺槽底板巷瓦斯抽放实践