公开(公告)号：US11958789B1

公开(公告)日：2024-04-16

申请号：US18536550

申请日：2023-12-12

Applicant: Kunming University of Science and Technology

Inventor： Zhi-quan Yang ,  Jun-fan Xiong ,  Ying-yan Zhu ,  Yi Yang ,  Yong-shun Han ,  Muhammad Asif Khan ,  Jian-bin Xie ,  Tian-bing Xiang ,  Bi-hua Zhang ,  Han-hua Xu ,  Jie Zhang ,  Shen-zhang Liu ,  Qi-jun Jia ,  Cheng-yin Ye ,  Gang Li

IPC: C04B7/36

CPC classification number: C04B7/361

Abstract: A method for determining a consistency coefficient of a power-law cement grout includes: determining a water-cement ratio of the power-law cement grout; according to engineering practice requirements, determining a time required to determine the consistency coefficient of the power-law cement grout; and obtaining the consistency coefficient of the power-law cement grout. The method is accurate and reliable, requires less calculation, etc.; and has very high practical value and popularization value in environmental protection and ecological restoration.

公开(公告)号：US11946845B1

公开(公告)日：2024-04-02

申请号：US18499251

申请日：2023-11-01

Applicant: Kunming University of Science and Technology

Inventor： Zhi-quan Yang ,  Jia-jun Zhang ,  Jun-fan Xiong ,  Ying-yan Zhu ,  Yi Yang ,  Muhammad Asif Khan ,  Tian-bing Xiang ,  Bi-hua Zhang ,  Han-hua Xu ,  Jie Zhang ,  Shen-zhang Liu

IPC: G01N15/08 ,  G01N33/24

CPC classification number: G01N15/08

Abstract: A method for determining a three-dimensional tortuosity of a loose and broken rock-soil mass, includes the following steps: a particle grading curve of the loose and broken rock-soil mass is obtained by utilizing a particle size analysis, and followed by calculating an equivalent particle size and an average particle size; a porosity of the loose and broken rock-soil mass is obtained by utilizing a moisture content test, a density test, and a specific gravity test; the three-dimensional tortuosity of the loose and broken rock-soil mass is obtained by utilizing the equivalent particle size, the average particle size and the porosity of the loose and broken rock-soil mass. The method has the advantages of simple logic, accuracy and reliability, simple and fast parameter determination, and has high practical value and promotion value in the field of environmental protection and ecological restoration technology.

公开(公告)号：US11733146B1

公开(公告)日：2023-08-22

申请号：US18072319

申请日：2022-11-30

Applicant: Kunming University of Science and Technology

Inventor： Zhiquan Yang ,  Mao Chen ,  Yingyan Zhu ,  Yi Yang ,  Wentao Chen ,  Yuqing Liu ,  Muhammad Asif Khan ,  Bihua Zhang ,  Hanhua Xu ,  Tianbing Xiang ,  Jie Zhang

IPC: G01N15/08 ,  G01N33/38 ,  G01N33/24

CPC classification number: G01N15/0893 ,  G01N33/246 ,  G01N33/383

Abstract: A method for determining a column-hemispherical permeation radius with time-varying property of power-law cement grout and tortuosity of rock and soil mass is provided, including: acquiring a porosity ϕ of rock and soil mass and a corresponding permeation coefficient K by geotechnical tests, measuring a groundwater pressure P0 at a grouting point and determining tortuosity ξ of rock and soil mass; acquiring an initial consistency coefficient c0, a rheological index n and a time-varying property coefficient k of power-law cement grout with a designed water to cement ratio by rheological tests, and determining the viscosity of water μw; acquiring grouting parameters, including a grouting pressure P1, grouting time t, a number m of grouting holes of a side surface of a grouting pipe and a grouting hole radius r; and solving a column-hemispherical permeation grouting diffusion radius R considering coupling effect both the tortuosity of rock and soil mass and the time-varying property of power-law cement grout.