ZA202002817B - Coal seam slotting and relieving device with post-mixed high-pressure abrasive gas jet and slotting method - Google Patents

Coal seam slotting and relieving device with post-mixed high-pressure abrasive gas jet and slotting method

Info

Publication number
ZA202002817B
ZA202002817B ZA2020/02817A ZA202002817A ZA202002817B ZA 202002817 B ZA202002817 B ZA 202002817B ZA 2020/02817 A ZA2020/02817 A ZA 2020/02817A ZA 202002817 A ZA202002817 A ZA 202002817A ZA 202002817 B ZA202002817 B ZA 202002817B
Authority
ZA
South Africa
Prior art keywords
slotting
post
coal seam
gas jet
relieving device
Prior art date
Application number
ZA2020/02817A
Inventor
Yong Liu
Jianping Wei
Hongtu Zhang
Xiaotian Liu
Chenchen Wang
Zhiyuan Xu
Jiaojiao Wu
Original Assignee
Univ Henan Polytechnic
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Henan Polytechnic filed Critical Univ Henan Polytechnic
Publication of ZA202002817B publication Critical patent/ZA202002817B/en

Links

ZA2020/02817A 2019-09-27 2020-05-15 Coal seam slotting and relieving device with post-mixed high-pressure abrasive gas jet and slotting method ZA202002817B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910927451.2A CN110497320A (en) 2019-09-27 2019-09-27 Mixing high-pressure abrasive material gas jet coal seam cutting pressure relief device and slotting process afterwards

Publications (1)

Publication Number Publication Date
ZA202002817B true ZA202002817B (en) 2020-12-23

Family

ID=68593071

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA2020/02817A ZA202002817B (en) 2019-09-27 2020-05-15 Coal seam slotting and relieving device with post-mixed high-pressure abrasive gas jet and slotting method

Country Status (2)

Country Link
CN (1) CN110497320A (en)
ZA (1) ZA202002817B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111042792B (en) * 2020-01-13 2021-01-15 煤科集团沈阳研究院有限公司 Deep drilling longitudinal joint cutting device and method
CN111794682A (en) * 2020-08-03 2020-10-20 河南理工大学 Passive extrusion type pulse coal dust jet flow coal breaking pressure relief and permeability increasing device and using method thereof
CN113931608A (en) * 2021-10-13 2022-01-14 中煤科工集团重庆研究院有限公司 Rear-mounted binary channels abrasive material efflux slotting device
CN114370272B (en) * 2021-12-30 2024-05-07 中矿科创(北京)煤炭技术有限公司 Directional hydraulic roof cutting method and device thereof
CN115592574A (en) * 2022-06-29 2023-01-13 大连工业大学（Cn） Abrasive flow polishing clamp for spiral groove of twist drill

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204457849U (en) * 2015-01-07 2015-07-08 河南理工大学 The anti-reflection equipment of coal release is broken in high-pressure abrasive material gas jet
CN109441353B (en) * 2018-12-21 2023-08-11 河南理工大学 Post-mixed abrasive gas jet coal breaking device and coal breaking method thereof
CN210790585U (en) * 2019-09-27 2020-06-19 河南理工大学 Rear-mixing type high-pressure abrasive gas jet coal seam slotting pressure relief device

Also Published As

Publication number Publication date
CN110497320A (en) 2019-11-26

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