公开(公告)号：US20210388724A1

公开(公告)日：2021-12-16

申请号：US17292152

申请日：2020-07-20

Applicant: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY ,  CHINA COMMUNICATIONS CONSTRUCTION CO., LTD ,  QINGDAO WEST COAST RAIL TRANSIT CO., LTD ,  QINGDAO FIRST MUNICIPAL ENGINEERING CO., LTD ,  HEBEI FEIPU ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD

Inventor： Xianghui MENG ,  Shibin JIANG ,  Weizhou LI ,  Hailiang WANG ,  Fu YU ,  Wensheng HE ,  Quanwei LIU ,  Chuan LI ,  Zhenbiao WANG ,  Lin XIN ,  Biao KONG ,  Xiangbao MENG ,  Yong ZHANG ,  Wenming ZHANG ,  Lide HOU ,  Jiufang XIONG ,  Xuanshan ZHANG

IPC: E21D11/10 ,  E21D11/15 ,  E21D11/18 ,  E21D15/44

Abstract: 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.

公开(公告)号：US20210355828A1

公开(公告)日：2021-11-18

申请号：US17292074

申请日：2020-07-20

Applicant: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY ,  CHINA COMMUNICATIONS CONSTRUCTION CO., LTD ,  HEBEI FEIPU ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. ,  QINGDAO WEST COAST RAIL TRANSIT CO., LTD ,  QINGDAO FIRST MUNICIPAL ENGINEERING CO., LTD

Inventor： Lin XIN ,  Shibin JIANG ,  Fu YU ,  Hailiang WANG ,  Weizhou LI ,  Quanwei LIU ,  Wensheng HE ,  Chuan LI ,  Zhenbiao WANG ,  Biao KONG ,  Xiangbao MENG ,  Yong ZHANG ,  Wenming ZHANG ,  Lide HOU ,  Jiufang XIONG ,  Xuexiang XU ,  Shuai WANG

IPC: E21D11/10 ,  E21D19/04 ,  E21D11/18 ,  E21D15/44

Abstract: 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.

公开(公告)号：US20210154510A1

公开(公告)日：2021-05-27

申请号：US17258725

申请日：2018-12-30

Applicant: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Xiangming HU ,  Weimin CHENG ,  Mingyue WU ,  Yanyun ZHAO ,  Wei LU ,  Biao KONG ,  Di XUE

IPC: A62D1/00 ,  C08K11/00 ,  C08K3/34 ,  C08K5/1545 ,  C08K3/26 ,  C08K3/40 ,  C08J3/11 ,  C08J3/24 ,  E21F5/08

Abstract: A plastic gel material for preventing spontaneous combustion of coal, including water, a crosslinking agent, a toughener, a coagulant, an aggregate and a water glass. The crosslinking agent (AlCit) is prepared by mixing a polyaluminum chloride solution and a citric acid solution then neutralizing the mixture with a sodium hydroxide solution. The coagulant is one or more of potassium bicarbonate, sodium bicarbonate, ammonium bicarbonate, sodium carbonate or glucono-δ-lactone (GDL). The toughener is one or more of pregelatinized starch, sodium alginate, carboxymethyl cellulose or polyacrylamide. The aggregate is coal ash or bentonite. The plastic gel has good water retention, toughness and inhibition performance, and helps avoid easy cracking and pulverization in inorganic silica gel consolidating bodies after losing water. The plastic gel can cover the surface of burning coal mass, reduce the temperature of the ignition source, heat radiation and production amount of CO, and have a fire extinguishing effect.