Underground dewatering construction method, dewatering well dewatering construction structure and plugging construction structure

WU HAO / GONG HONGXIANG / CHEN CHENG et al. | Europäisches Patentamt | 2024

Dewatering well device penetrating through underground excavation deep foundation pit and vacuum dewatering method

YE TAO / SONG YANG / ZONG JIAN et al. | Europäisches Patentamt | 2023

Dewatering well construction method, dewatering well and dewatering well system

YAO JIANQING / DING XIANG / ZHAO ZIYU et al. | Europäisches Patentamt | 2023

Novel well-point dewatering device

YAO LIGUO / XU YUAN / PENG HONGXIA et al. | Europäisches Patentamt | 2021

Novel negative pressure dewatering well

LUO DECHENG / YANG JIE / XIAO QING et al. | Europäisches Patentamt | 2022