公开(公告)号：US11215542B2

公开(公告)日：2022-01-04

申请号：US16652961

申请日：2019-02-28

Applicant: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Xuesheng Liu ,  Shilin Song ,  Yunliang Tan ,  Deyuan Fan ,  Jianguo Ning ,  Qingheng Gu ,  Ning Jiang ,  Jun Wang ,  Qiang Xu

IPC: G01N3/12 ,  G01N3/307

Abstract: A rock mechanics test system with impact loading-confining pressure unloading and its usage method. The test system includes bearing frame unit, axial compression loading unit, impact loading unit and confining pressure loading unit. The bearing frame unit includes pedestal, column and cross beam. The column is vertically installed on both sides of the upper surface of the pedestal, and the cross beam is horizontally fixed on the upper part of the column. The axial compression loading unit is fixed at the middle position of the upper surface of the pedestal and is used to exert the axial bottom-up pressure to the sample. The impact loading unit is fixed on the cross beam and is used to exert the axial top-down impact load on the sample.

公开(公告)号：US11519837B2

公开(公告)日：2022-12-06

申请号：US17580358

申请日：2022-01-20

Applicant: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Shanchao Hu ,  Jing Zuo ,  Jianguo Ning ,  Jun Wang ,  Yong Guo ,  Wenkai Ru

IPC: G01N3/08 ,  G01N3/02

Abstract: The disclosure discloses an automatic simulation test bench and a test method for similar materials of top-coal caving mining. Wherein, the test bench includes a test bench base, a coal seam and strata simulation module, a coal releasing simulation module, a material recovery module, automatic mixing system and a central control system. The disclosure adopts modular construction to meet the requirements of similar material simulation test of top-coal caving mining under different geological conditions and mining technology to the greatest extent. The disclosure adopts automatic control, reduces the working intensity and operation difficulty of the test personnel, and reduces the influence of human factors on the test results. The disclosure adopts a lifting structural design, so as to meet the requirements of similar simulation test of top-coal caving mining under different mining and caving ratios.