Zhejiang University

China Railway Eryuan Engineering Group Co., Ltd.

Yunhe Fan

Lei Wang

Yang Liu

Hongyue Sun

Yuequan Shang

Huan Xu

Yongping Zeng

Wanqiang Zhao

Liang Kuang

Li Jiang

Yu Yu

Haodi Xu

Chengcheng Lv

Dongfei Wang

Feixiang Shuai

Tao Pang

Yongjie Tan

Guoquan Ju

Jinsong Liu

Youhao Long

Yuzhe Zhou

Xiaochuan Ren

Yongping Zhang

Yu Cao

Changguo He

A self-starting negative pressure drainage system for draining groundwater in a slope, includes: a declined borehole, a pipe boot, a permeable pipe and a drain pipe; wherein the declined borehole is divided into a permeable drilling section and a sealed grouting drilling section; wherein the permeable drilling section is on a lower portion of the declined borehole, and the sealed grouting drilling section is on an upper portion of the declined borehole; a water stop ring made of water-expanding rubber is provided between the permeable drilling section and the sealed grouting drilling section; the permeable drilling section comprises the permeable pipe; a top of the permeable pipe contacts the water-expanding rubber; a cavity is formed in the permeable pipe, an inlet of the drain pipe passes through the water stop ring made of water-expanding rubber and is inserted into the permeable pipe.

Self-starting negative pressure drainage system for draining groundwater in slope and construction method thereof

A self-drainage anchor cable system is provided, wherein a drainage section () is arranged above the internal anchoring section () of an anchor cable; a first end of the steel strand () extends into a bottom of the borehole (); the isolation pipe () is sleeved on the steel strand () in the drainage section (), and the permeable pipe () is sleeved on the isolation pipe (); a length of the isolation pipe () is larger than a length of the permeable pipe (), and there is a space () between the isolation pipe () and the permeable pipe (); the water stop rings made of water-expanding rubber () are provided at both ends of the isolation pipe (), and end portions of the permeable pipe () are in contact with the water-expending rubber water stop rings () A construction method for the self-drainage anchor cable system is also provided.

Self-drainage anchor cable system for slope protection and construction method thereof

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Zhejiang, China

Yunhe Fan