Shandong University

China Communications Construction Company Limited

Qingdao West Coast Rail Transit Co., Ltd.

Qingdao First Municipal Engineering Co., Ltd

Hebei Feipu Environmental Protection Technology Co., Ltd

Other

Quanwei Liu

Wenming Zhang

Yong Zhang

Lin Xin

Chuan Li

Zhenbiao Wang

Biao Kong

Fu Yu

Xiangbao Meng

Hailiang Wang

Shibin Jiang

Weizhou Li

Wensheng He

Lide Hou

Jiufang Xiong

Xiu Ping Liu

Xianzhang Ling

Shuai Wang

Xuanshan Zhang

Xuexiang Xu

Zhengyi Xu

Zhongnian Yang

Xixi Huang

Linsheng Liu

Xianghui Meng

Cheng Huang

A grouting device for high-coagulability grouting materialsincludes a grouting pipe, a connector and a self-sealing pipe head, wherein one end of the connector is connected with a grouting pump through the grouting pipe, the other end of the connector is connected with the self-sealing pipe head through the grouting pipe, and the grouting pipe is connected with the connector and the self-sealing pipe head in a fixed and sealed mode. The grouting device is easy to install, features reliable connection between the grouting pipe and the connector and the self-sealing pipe head, and can be reused. Because the inner diameter of the connector is consistent with the inner diameter of the grouting pipe, and a slurry outlet on an end cap of the self-sealing pipe head is a circular slurry outlet, pressure loss in the grouting process is effectively reduced, and the grouting effect is good.

Grouting device for high-coagulability grouting material

A method of treating tunnel collapse includes leveling a collapse body and moving a pavilion support under the collapse cavity, lifting a shield plate until a lower edge of the shield plate surpasses a contour line of an initial supporting arch of a tunnel, connecting a bottom column and inserting a padding plate under a column. If the hydraulic prop retracts, the column, the bottom column, the padding plate and the hydraulic prop bear a load from the shield plate. Mounting and connecting the initial supporting arch, welding the intersection point of the column and the initial supporting arch, cutting off the column in the initial supporting arch. Transferring the load of the shield plate from the pavilion support to an initial supporting shed, spraying fast-setting concrete to a grid arch to form a closed shell, and pumping filling material to fill the space of the collapse cavity.

Method of treating tunnel collapse using pavilion support

A method of treating tunnel collapse includes mounting a shield plate, a column, a support column to form a combined support and moving the combined support onto an operation platform, lifting up the combined support, and enabling the height of canopy to be greater than the height of an initial supporting arch. Actively contacting a surface of a collapse cavity by a fixed support column and bearing a load, and lifting a movable support column to the top of the collapse cavity and bearing a load. Mounting an initial supporting arch, and welding the initial supporting arch with the support column. Removing a hydraulic prop after the support column contacting the initial supporting arch is cut off and the load of the shield plate is transferred to a supporting shed. Mounting an exhaust pipe and a filling material pumping pipe, and pumping a filling material into a collapse cavity space.

Method of treating tunnel collapse with roof-contacted shield support

Growing community of inventors

Qingdao, China

Quanwei Liu