Inventor
NING JIANGUO
CN4 patents
Patents
4 patentsUS11215542B2Jan 4, 2022
Rock impact loading-unloading confining pressure test system and usage method therefor
UNIV SHANDONG SCIENCE & TECH0 citations44
US11519837B2Dec 6, 2022
Automatic simulation test bench for similar materials of top-coal caving mining and test method thereof
UNIV SHANDONG SCIENCE & TECH0 citations41
US11746654B2Sep 5, 2023
Kind of no-pillar and gob-side entry retaining mining and construction method without the mining area division
UNIV SHANDONG SCIENCE & TECH0 citations37
US10794136B2Oct 6, 2020
Reverse rotary sprinkler drilling pipe system with anti-sticking function and its application method
UNIV SHANDONG SCIENCE & TECH0 citations34