The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2026
Filed:
Aug. 21, 2023
China University of Mining and Technology, Xuzhou, CN;
2th Exploration Team of Jiangsu Coal Geological, Xuzhou, CN;
Wanghua Sui, Xuzhou, CN;
Chang Zhou, Xuzhou, CN;
Shichong Yuan, Xuzhou, CN;
Yuan Hang, Xuzhou, CN;
Shuangcheng Tang, Xuzhou, CN;
Baolei Xie, Xuzhou, CN;
China University of Mining and Technology, Xuzhou, CN;
Exploration Team of Jiangsu Coal Geological, Xuzhou, CN;
Abstract
Provided is an evaluation method of ductility of a grouted rock mass for advanced renovation of a water-sand mixture inrush prevention area including following steps: first, acquiring a spatial distribution law of cracks in overlying strata, and establishing a three-dimensional geological model and a grouted rock mass unit geological model; calculating rock mass quality standard of the target rock strata; performing compression tests on multiple groups of grouted consolidated bodies, and calculating an average value of strain softening indexes of the multiple groups of grouted consolidated bodies; selecting multiple groups of grouted target rock strata, and calculating an average value of unstable fracture ductility of the multiple groups of grouted target rock strata; finally, acquiring a permeability strength of the grouted rock mass, and calculating and grading an evaluation index of ductility of the grouted rock mass.