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. 07, 2024
Filed:
Aug. 18, 2022
University of Science and Technology Beijing, Beijing, CN;
North China Institute of Science and Technology, Langfang, CN;
Beijing Anke Xingye Science and Technology Co., Ltd., Beijing, CN;
Sitao Zhu, Beijing, CN;
Gaoang Wang, Beijing, CN;
Fuxing Jiang, Beijing, CN;
Gang Yao, Beijing, CN;
Tao Zhou, Beijing, CN;
Jinhai Liu, Beijing, CN;
Huan Li, Beijing, CN;
Zhen Kong, Beijing, CN;
Qingbo He, Beijing, CN;
Xiaocheng Qu, Beijing, CN;
Quande Wei, Beijing, CN;
Yitong Huang, Beijing, CN;
Shaohua Sun, Beijing, CN;
University of Science and Technology Beijing, Beijing, CN;
North China Institute of Science and Technology, Langfang, CN;
Beijing Anke Xingye Science and Technology Co., Ltd., Beijing, CN;
Abstract
The present disclosure provides a coal bump control method for sectional hydraulic fracturing regions of a near vertical ultra thick coal seam. The method includes: deepening a main shaft from a mining level to a fracturing level; excavating a cross-hole from a roof rock layer of a coal seam at the fracturing level to enter a coal seam being mined, and excavating a roadway along the strike of the coal seam; and drilling hydraulic fracturing boreholes in a dedicated fracturing roadway along an inclination angle of the coal seam to the coal seam above the roadway, wherein the length of the borehole makes the borehole in communication with a goaf, and the spacing of the boreholes along the strike and the sectional spacing of the boreholes in an inclination direction are designed according to the parameters of fracturing equipments and the fracturing length.