95sao国产成视频永久免费_国产一级毛片av_午夜福利电影在线_最新电影免费下载_亚洲高清无码三级片_亚洲AV涩涩涩日韩_白人极品少妇XXXⅩ做受_国产精品免费隔壁老王_日韩Aⅴ无码精品久久人_少妇私密推油一区二区三区

?
The technology exchange and new product on-site observation meeting of the North traffic near-level
writer:ld-driller | time:2020-09-03 16:00:42

On December 9, 2010, it was sponsored by China Coal Machinery Industry Association and China coal mine development committee, shenyang North transportation Heavy Industry Group hosted the "North transportation nearly level kilometer directional drilling rig technology exchange and new product site observation meeting (referred to as" Forum ")" held ceremoniously in Shenyang, more than 400 coal mining industry leaders and experts from all over the country attended this forum.

Welcome speech from Qu Kai, chairman of the group

North traffic nearly horizontal kilometer directional drilling rig technical exchange and new product site observation meeting platform

The atmosphere at the conference was warm

The opening ceremony of the forum was hosted by Wang Dun, the secretary general of coal mine and coal city development committee. Qu Kai, the chairman of Shenyang North transportation Heavy Industry Group, delivered a welcome speech, and Wang Xiuyi, the vice president of Science and Technology Daily, director Xu Li of coal department of National Energy Administration of China, director of enterprise department of Liaoning Provincial People's Government, deputy secretary general Chen Hong of Shenyang Municipal People's Government, deputy municipal leader of Shenyang city, district head of Tiexi district, director of management committee of Tiexi development zone Li Songlin, li Qing, deputy director of Liaoning coal industry administration, made speeches at the opening ceremony respectively. Dong ran, the assistant president of Northern Communications Group and the Minister of drilling rig business department, introduced in detail the research and development, production and trial situation of nearly horizontal kilometer directional drilling rig in the meeting. The vice president, Professor, School of safety, China University of Mining and Technology, dr. Lin Baiquan, a well-known domestic expert, gave a special speech on the theme of "new technology of gas extraction based on regional governance, wei Gang, the chief engineer of Shenyang Coal Industry Group, gave a speech on the theme of" research and practice of gas control and outburst elimination technology in low permeability coal seam.

On the afternoon of 9th, the technology exchange meeting of nearly horizontal kilometer directional drilling rig continued to be held in Fengda building, Shenyang. The meeting was hosted by Wang Dun, the secretary general of coal mine and coal city development committee, fan Weiping, the president of North transportation coal mining company, and six excellent engineers of drilling rig business department respectively made a statement on the development status and prospect of near horizontal directional drilling technology, basic structure and principle of nearly horizontal kilometer directional drilling rig, form and characteristics of deep hole directional drilling rig feed mechanism, "The influence of the optimization of the strength and toughness of deep hole drill pipe on the directional drilling of deep hole", "the treatment method of gas gushing from near horizontal directional drilling machine during drilling", the keynote speeches on the themes of "main process methods and equipment selection of deep hole directional extraction" and "research and development of mine emergency rescue equipment" are about the technical characteristics, equipment usage of the group's kilometer directional drilling rig, the current situation and future development trend of product technology will be explained in depth and detail.

After the meeting, the participants visited the national enterprise technology center of northern communications and the production and manufacturing base of coal mining and metallurgy machinery together, and observed the nearly horizontal kilometer directional drilling rig, high-power hard rock roadheader, second-generation multifunctional roadheader, new products such as new coal mining machine, trackless belt pulley mining vehicle, washing equipment and so on, and give great praise to the coal mining machine products of the group.

This forum is a national High-Level Forum on nearly-level kilometer drilling rig, and the Forum has achieved a complete success.






?
TELPRODUCTSSMSHOME more

91亚洲一区二区三区在线无码 | 擦老太BBB擦BBB擦BBB擦 | 99婷婷人人澡人人喊人人 | 免费精品99久久国产综合精品 | 久久精品免费观看国产 | 又爽又色又高潮色视频国产 | 中文字幕久久久久人妻中出 | 内射人妻无码色AV无码 | 午夜性刺激免费看视频 | 玩弄放荡人妻一区二区三区 | 亚欧洲精品在线视频免费观看 | 人妻少妇精品久久久久久97 | 一级中文字幕免费乱码专区 | 日韩成人精品无码专区 | 黄色一级视频一区二区三区 | 亚洲av午夜福利精品一级无码 | 亚洲综合AV在线在线播放 | 黄色视频网站在线观看国产 | 久久国产精品-国产精品 | 大乳丰满人妻中文字幕视频 | 伊人久久精品无码二区69 | 久久夜色精品国产嚕嚕亚洲av | 密桃A∨秘无码一区二区三区 | 亚洲国产精品VA在线看黑人 | 最近日本中文字幕免费完整 | 欧美激情A∨在线视频播放 免费无码一区二区日韩视频 | 日本精品一区二区在线观看 | 亚洲国产婷婷香蕉久久久久久竹菊 | 影音先锋男人资源在线观看 | 91精品国产乱码在线观看 | 精品无码人妻一区二区免费 | 国产精品无码专区在线播放 | 国产一级毛片在线视频 | 亚洲高清无码视频在线观看 | 免费 无码 国产成年+在线观看 | 久久一二三区精品免费视频 | 又紧又大又爽精品一区二区 | 文中字幕一区二区三区视频播放 | 国产精品无码专区视频 | 一本一道人人妻人人妻αV 亚洲欧美久久天堂综合一区 | 日韩欧美亚洲每日更新在线观看 |