The Development of the Coal and Gas Outburst Prediction Positional Sampler
To solve the problem that there are no outburst prediction positional samplers in the mining face, a new outburst prediction positional sampler with the dedicated drilling diameter φ42mm, the QDT42/1.0 has been developed. It involves the design of the device structure of the dual-tube sampling, the process of opening and closing the sampling hole, and some key technical parameters. The applied effects of this device with the sampling investigation show that it results in the designated outburst dangerous prediction indexes measurements and it is significantly useful and convenient in taking samples. The increment increases along with the drilling depth. This fully displays that the sampling instruments have better technical performance such as accurate results of the sampling test and good prediction effect. Application tests have shown that the sampler is a simple, accurate positioning, with the short sampling time, and the characteristics and functions of the sampling volume meet the requirements. Therefore, the full realization of the diameter φ42mm, 10m deep drilling positional sampling has important application value and practical significance in reality.
coal and gas outburst risk prediction positonal sampling sampler design
Xu Yanpeng Wang Zhaofeng
School of Safety Science and Engineering,Henan Polytechnic University, High-tech Zone, No. 2001 Century Avenue, Henan Jiaozuo 454003, China
国际会议
The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)
北京
英文
1427-1434
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）