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:
Jun. 30, 2020
Filed:
Nov. 16, 2017
China University of Mining and Technology, Jiangsu, CN;
Xuzhou Zhonan Science&technology Co., Ltd, Jiangsu, CN;
China Pingmei Shenma Energy and Chemical Industry Group Co., Ltd, Henan, CN;
Pingdingshan Tianan Coal Mining Co., Ltd, Henan, CN;
Jixiong Zhang, Jiangsu, CN;
Xiaole Han, Jiangsu, CN;
Qiang Zhang, Jiangsu, CN;
Lixin Lan, Jiangsu, CN;
Yadong Chen, Jiangsu, CN;
Yang Tai, Jiangsu, CN;
China University of Mining and Technology, Jiangsu, CN;
XUZHOU ZHONAN SCIENCE&TECHNOLOGY CO., LTD, Jiangsu, CN;
China Pingmei Shenma Energy and Chemical Industry Group Co., LTD, Henan, CN;
Pingdinghsan Tianan Coal Mining Co., LTD, Henan, CN;
Abstract
A method for determining a physical similarity simulation material of a solid backfill body is provided. A compaction test is run on a gangue backfill body in a lab, to obtain a ε-σ curve regarding the gangue backfill body in the compaction process. Backfill blocks are made by using a thin wood board, sponge, and a paper sheet in different proportions, and then an unconfined compression test is separately run on the backfill blocks used for physical similarity simulation, to obtain ε-σcurves regarding the backfill blocks in the compression process. A sum of squared errors Σ(ε−ε)is introduced to separately calculate a sum of squared errors of the backfill block and that of the gangue backfill body, and accordingly an error between ε-σ curves regarding the test block and the gangue backfill body is determined. Finally, a backfill block for which the sum of squared errors is less than 0.5 is determined as a physical similarity simulation material of the gangue backfill body. By fabrication and selection of similar materials, the present invention can reduce an error caused by a selected backfilling material during a physical similarity simulation experiment, guaranteeing the accuracy of the physical similarity simulation experiment for solid backfill mining.