Title:
SELF-ADAPTIVE GAS RELEASE ROD AND SHALLOW GAS CONTROLLED GAS RELEASE RECOVERY SYSTEM AND METHOD
Document Type and Number:
WIPO Patent Application WO/2021/026961
Kind Code:
A1
Abstract:
Disclosed are a self-adaptive gas release rod (4) and a shallow gas controlled gas release recovery system and method. The self-adaptive gas release rod (4) comprises a second hollow feeler lever (39) and a first hollow feeler lever (40); the second hollow feeler lever (39) is connected to the lower portion of the first hollow feeler lever (40), and the diameter thereof is larger than that of the first hollow feeler lever (40); a circumferential groove is formed in the middle of the second hollow feeler lever (39), a sliding sleeve (23) is arranged in the groove, and the lower end of the sliding sleeve (23) is wedge-shaped; a gas release hole (38) is formed in the upper portion of the groove, the sum of the length of the sliding sleeve (23) and the length of the gas release hole (38) is smaller than the length of the groove, and the length of the sliding sleeve (23) is larger than the length of the gas release hole (38); in an insertion process of the self-adaptive gas release rod (4), the sliding sleeve (23) slides to the upper portion of the groove to cover the gas release hole (38); and in an upward pulling process, the sliding sleeve (23) slides to the lower portion of the groove, the gas release hole (38) is exposed, and gas is discharged by means of the gas release hole (38). The recovery system and method based on the self-adaptive gas release rod (4) are used to solve the problem of a rod being blocked by sludge in traditional shallow gas release technology; and a probe can be recovered by means of the integrated design, the shallow gas release cost is reduced, and same is suitable for industrial application.
Inventors:
WANG LIZHONG (CN)
ZHAO SHUANG (CN)
HONG YI (CN)
ZHU LIANGEN (CN)
WANG QIANG (CN)
MAO QIHUI (CN)
ZHAO SHUANG (CN)
HONG YI (CN)
ZHU LIANGEN (CN)
WANG QIANG (CN)
MAO QIHUI (CN)
Application Number:
PCT/CN2019/102106
Publication Date:
February 18, 2021
Filing Date:
August 23, 2019
Export Citation:
Assignee:
UNIV ZHEJIANG (CN)
International Classes:
E21B49/00; E21B43/12; E21B47/00
Foreign References:
| CN108708717A | 2018-10-26 | |||
| CN104838089A | 2015-08-12 | |||
| CN102877870A | 2013-01-16 | |||
| RU2611812C1 | 2017-03-01 |
Other References:
TAO LING-FA, PAN YONG-JIAN, CAI GUO-CHENG: "The Exploration of Shallow Gas in Marine Sedimentary Soil of the Coastal Plain", RAILWAY INVESTIGATION AND SURVEYING, vol. 04, 1 January 2014 (2014-01-01), pages 47 - 50, XP055781018, DOI: 10.19630/j.cnki.tdkc.2014.04.014
LOU MINGHAO, LIU JINWEN; MAO QIHUI: "A BRIEF INTRODUCTION OF EXPLORATION METHOD OF HARMFUL GAS IN UNDERGROUND ENGINEERING", CHINA ENGINEERING & CONSULTING, no. 3, 15 March 2010 (2010-03-15), pages 40 - 42, XP009526068, ISSN: 1006-9607
JIANG WEISAN,YE ZHOU, ZHENG HUAPING, YONG ZHENMING: "QUATERNARY SHALLOW GAS CHARACTERISTICS IN HANGZHOU BAY AND THE EXPLORATION METHOD", NATURAL GAS INDUSTRY, vol. 17, no. 3, 28 May 1997 (1997-05-28), pages 20 - 23,2, XP009526069, ISSN: 1000-0976
CAI SHOUZHI; HU FENG; DU YUNGUO; GOU CHANGFEI: "The Controlled Release of Shallow Buried Toxic Gas in an River Crossing Railway Tunnel", SOIL ENGINEERING AND FOUNDATION, vol. 31, no. 3, 15 June 2018 (2018-06-15), pages 338 - 342, XP009526072, ISSN: 1004-3152
WANG YONG, KONG, LING-WEI, GUO AI-GUO: "Analysis of one-dimensional deformation of shallow gassy stratum caused by controlling gas release", ROCK AND SOIL MECHANICS, 1 April 2011 (2011-04-01), pages 241 - 246, XP055781012, DOI: 10.16285/j.rsm.2011.s1.026
LOU MINGHAO, LIU JINWEN; MAO QIHUI: "A BRIEF INTRODUCTION OF EXPLORATION METHOD OF HARMFUL GAS IN UNDERGROUND ENGINEERING", CHINA ENGINEERING & CONSULTING, no. 3, 15 March 2010 (2010-03-15), pages 40 - 42, XP009526068, ISSN: 1006-9607
JIANG WEISAN,YE ZHOU, ZHENG HUAPING, YONG ZHENMING: "QUATERNARY SHALLOW GAS CHARACTERISTICS IN HANGZHOU BAY AND THE EXPLORATION METHOD", NATURAL GAS INDUSTRY, vol. 17, no. 3, 28 May 1997 (1997-05-28), pages 20 - 23,2, XP009526069, ISSN: 1000-0976
CAI SHOUZHI; HU FENG; DU YUNGUO; GOU CHANGFEI: "The Controlled Release of Shallow Buried Toxic Gas in an River Crossing Railway Tunnel", SOIL ENGINEERING AND FOUNDATION, vol. 31, no. 3, 15 June 2018 (2018-06-15), pages 338 - 342, XP009526072, ISSN: 1004-3152
WANG YONG, KONG, LING-WEI, GUO AI-GUO: "Analysis of one-dimensional deformation of shallow gassy stratum caused by controlling gas release", ROCK AND SOIL MECHANICS, 1 April 2011 (2011-04-01), pages 241 - 246, XP055781012, DOI: 10.16285/j.rsm.2011.s1.026
Attorney, Agent or Firm:
HANGZHOU QIUSHI PATENT OFFICE CO., LTD. (CN)
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