公开(公告)号：US11796370B2

公开(公告)日：2023-10-24

申请号：US17052821

申请日：2019-04-11

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai Li ,  Liping Li ,  Jing Wang ,  Shaoshuai Shi ,  Zongqing Zhou ,  Hongliang Liu ,  Xingzhi Ba ,  Shangqu Sun ,  Zhongdong Fang ,  Zhenhua Liu

IPC: G01F17/00 ,  E21B43/12 ,  G01B13/00

CPC classification number: G01F17/00 ,  E21B43/126 ,  G01B13/00

Abstract: A volume measurement system and method for a closed water-filled karst cave, including a water collecting device, concentration tester and control system. The control system is connected to the water collecting device by a connecting piece. The water collecting device is a container with a top closed and bottom open. The water collecting device top is a piston. The piston is connected to a propulsion rod, and propulsion rod is controlled by control system to extend or retract, so as to realize the forward or backward movement of the piston. An openable and closeable placement table is hinged to the water collecting device's inner wall. The placement table is connected to piston, the placement table moves upward when piston is raised, and placement table moves downward when piston is lowered. The placement table is configured to accommodate a chemical substance. The concentration tester is configured to detect the solution's concentration.

公开(公告)号：US12276076B1

公开(公告)日：2025-04-15

申请号：US18960181

申请日：2024-11-26

Applicant: Shandong University

Inventor： Liping Li ,  Jing Wang ,  Yijie Zhang ,  Shikui Jia ,  Xingzhi Ba ,  Shuailong Jia ,  Diyang Chen ,  Hao Jiang ,  Ruizhi Jia ,  Xiaobo Zhang ,  Xincan Lu

IPC: E02D3/12

Abstract: Provided are a green sealing material for karst flowing water, and a preparation method and use thereof. The green sealing material includes a component A and a component B, with a volume ratio of the component A to the component B being in a range of 4:1 to 5:1; where the component A includes in parts by weight: 40 parts to 50 parts of a sulphoaluminate cement, 10 parts to 15 parts of a light-burned magnesium oxide, 1 part to 4 parts of boric acid, and 40 parts to 50 parts of water; and the component B includes in parts by weight: 0.2 parts to 0.4 parts of hydroxypropyl methylcellulose, 0.1 parts to 0.5 parts of polyacrylamide, 15 parts to 30 parts of potassium dihydrogen phosphate, 0.2 parts to 0.4 parts of triethanolamine, 0.5 parts to 1 part of lithium carbonate, and 80 parts to 100 parts of water.