Patents by Inventor Bingxiang HUANG
Bingxiang HUANG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11299954Abstract: Provided is a fracturing relief method for stress concentration of remaining ore pillars in an overlying goaf, including first, performing directional fracturing on a roof to optimize the stress of the roof and reduce the source of force; secondly, performing pulse fracturing on a coal pillar to produce a crack network, weaken the stiffness of the coal pillar and reduce the bearing capacity of the coal pillar; and finally, performing pulse fracturing on a floor strata of the coal pillar to reduce the ability of transferring stress concentration thereof. A drilling machine is used for separately constructing fracturing drill holes in a roadway to a set depth at an interval in a direction oblique to the coal pillar in an upper goaf. The roof, the coal pillar and the floor can be fractured by an oblique fracturing hole in a sublevel retreating manner. The position of the directional fracturing of the roof is approximately 1 m above the middle of a main roof above the coal pillar.Type: GrantFiled: November 2, 2018Date of Patent: April 12, 2022Assignees: China University of Mining and Technology, XUZHOU USURE MINING TECHNOLOGY CO., LTDInventors: Bingxiang Huang, Luying Shao, Xinglong Zhao, Shuliang Chen
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Publication number: 20210348471Abstract: Provided is a fracturing relief method for stress concentration of remaining ore pillars in an overlying goaf, including first, performing directional fracturing on a roof to optimize the stress of the roof and reduce the source of force; secondly, performing pulse fracturing on a coal pillar to produce a crack network, weaken the stiffness of the coal pillar and reduce the bearing capacity of the coal pillar; and finally, performing pulse fracturing on a floor strata of the coal pillar to reduce the ability of transferring stress concentration thereof. A drilling machine is used for separately constructing fracturing drill holes in a roadway to a set depth at an interval in a direction oblique to the coal pillar in an upper goaf. The roof, the coal pillar and the floor can be fractured by an oblique fracturing hole in a sublevel retreating manner. The position of the directional fracturing of the roof is approximately 1 m above the middle of a main roof above the coal pillar.Type: ApplicationFiled: November 2, 2018Publication date: November 11, 2021Applicants: China University of Mining and Technology, XUZHOU USURE MINING TECHNOLOGY CO., LTD.Inventors: Bingxiang HUANG, Luying SHAO, Xinglong ZHAO, Shuliang CHEN
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Patent number: 11085279Abstract: A stress-transfer method in tunnel with high ground pressure based on fracturing ring. According to the stress source of the tunnel, fracturing by drilling holes to form artificial weaken zones in surrounding rocks, that's named fracturing ring. The fracturing ring is the weaken zone with some width, whose inner boundary is the protective circle. The fracturing ring with small width is called the cutting and interruption circle and the cutting or interruption arc. The radius of the protective circle is determined by setting a certain width of safety coal pillar barriers at the edge of a support body. The radius of the fracturing ring is determined by the surrounding rock structure and the stress conditions as well as the construction technology. Usually, the higher the stress, the wider the radius of the fracturing ring. The cutting and interruption circle or arc could cut off all of the targeted rock which transmits the stress.Type: GrantFiled: September 30, 2017Date of Patent: August 10, 2021Assignees: China University of Mining and Technology, XUZHOU USURE MINING TECHNOLOGY CO., LTDInventors: Bingxiang Huang, Jiangwei Liu, Xinglong Zhao, Shuliang Chen
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Publication number: 20210201497Abstract: A method for determining a segmentation threshold of a digital image of a rock-soil material is disclosed. The method comprises the following steps: S1: acquiring a gray-level histogram curve of an SEM image of the rock-soil material; S2: determining a value range of a segmentation threshold T according to the gray-level histogram curve; S3: acquiring second derivatives of the gray-level histogram curve; and S4: determining the segmentation threshold T according to the second derivatives of the gray-level histogram curve and the value range of the segmentation threshold T. The present invention can rapidly and accurately determine the segmentation threshold of the digital image of the rock-soil material, and accurately distinguish a pore or fissure structure from a surface soil skeleton structure of the rock-soil material in the digital image.Type: ApplicationFiled: May 9, 2019Publication date: July 1, 2021Applicants: China University of Mining and Technology, XUZHOU JIANGHENG ENERGY TECHNOLOGY CO., LTD.Inventors: Jiangfeng LIU, Xulou CAO, Jianfu SHAO, Bingxiang HUANG, Gang WANG, Dawei HU, Liang CHEN, Shuliang CHEN
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Patent number: 10941641Abstract: A long-distance drilling and hydrofracturing integrated device and method in underground mine are provided. The device includes a drill bit, a hydrofracturing rod, an anti-impact rod, a hole sealing rod, a high-pressure sealed drill rod and a crawler drill rod feeder sequentially connected end to end. In the method, the drill rod and the hydrofracturing rod are delivered to a designated position while drilling, the drill rod does not need to be taken out, only a crawler drill needs to be improved, high-pressure water holes are added to the rod feeder, and the high-pressure water enters the drill rod from the high-pressure water holes and reaches the hydrofracturing portion. When the hydrofracturing is completed, the drill rod is withdrawn by the crawler drill, reaches another hydrofracturing point, and a hole sealing operation can also be performed.Type: GrantFiled: May 11, 2018Date of Patent: March 9, 2021Assignee: China University of Mining and TechnologyInventors: Bingxiang Huang, Haoze Li, Shuliang Chen
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Publication number: 20200208504Abstract: A long-distance drilling and hydrofracturing integrated device and method in underground mine are provided. The device includes a drill bit, a hydrofracturing rod, an anti-impact rod, a hole sealing rod, a high-pressure sealed drill rod and a crawler drill rod feeder sequentially connected end to end. In the method, the drill rod and the hydrofracturing rod are delivered to a designated position while drilling, the drill rod does not need to be taken out, only a crawler drill needs to be improved, high-pressure water holes are added to the rod feeder, and the high-pressure water enters the drill rod from the high-pressure water holes and reaches the hydrofracturing portion. When the hydrofracturing is completed, the drill rod is withdrawn by the crawler drill, reaches another hydrofracturing point, and a hole sealing operation can also be performed.Type: ApplicationFiled: May 11, 2018Publication date: July 2, 2020Applicant: China University of Mining and TechnologyInventors: Bingxiang HUANG, Haoze LI, Shuliang CHEN
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Publication number: 20190316454Abstract: A stress-transfer method in tunnel with high ground pressure based on fracturing ring. According to the stress source of the tunnel, fracturing by drilling holes to form artificial weaken zones in surrounding rocks, that's named fracturing ring. The fracturing ring is the weaken zone with some width, whose inner boundary is the protective circle. The fracturing ring with small width is called the cutting and interruption circle and the cutting or interruption arc. The radius of the protective circle is determined by setting a certain width of safety coal pillar barriers at the edge of a support body. The radius of the fracturing ring is determined by the surrounding rock structure and the stress conditions as well as the construction technology. Usually, the higher the stress, the wider the radius of the fracturing ring. The cutting and interruption circle or arc could cut off all of the targeted rock which transmits the stress.Type: ApplicationFiled: September 30, 2017Publication date: October 17, 2019Applicants: China University of Mining and Technology, XUZHOU USURE MINING TECHNOLOGY CO.,LTDInventors: Bingxiang HUANG, Jiangwei LIU, Xinglong ZHAO, Shuliang CHEN
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Patent number: 9921202Abstract: An integrated experimental system of hydrofracturing, water jet slotting, seepage and gas displacement under true triaxial stress, including: a true triaxial stress loading experimental frame, a loading system and a monitoring system. The true triaxial stress loading experimental frame and the loading system are connected by oil pipes; the monitoring system is connected to the true triaxial stress loading experimental frame and the loading system by signal lines; the true triaxial stress loading experimental frame comprises a main experimental bench and six flat jacks; a loading cavity for test block is equipped in the main experimental bench; the six flat jacks are set in the loading cavity; and a space of regular hexahedron is formed by the six flat jacks.Type: GrantFiled: April 20, 2015Date of Patent: March 20, 2018Assignee: China University of Mining and TechnologyInventor: Bingxiang Huang
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Publication number: 20170003263Abstract: This invention relates to the coal mining field, specifically, to an integrated experimental system of hydrofracturing, water jet slotting, seepage and gas displacement under true triaxial stress. This invention consists of true triaxial stress loading experimental framework, a loading system and a monitoring system. Under true triaxial stress, experiments can be conducted with sample size as large as of 500 mm×500 mm×500 mm. The hydrofracturing experiment can be controlled by as many as 5 independent boreholes at the same time. The borehole water pressure in hydraulic fracturing can reach 63 MPa. Experiments of seepage and fluid-structure interaction with high seepage pressure can be achieved with sample dimension as large as 400 mm×400 mm×400 mm. Mine-used experimental bench of high pressure pump with rated flow of 70 L/min and maximum water pressure of 70 MPa can be used to drill borehole and the like.Type: ApplicationFiled: April 20, 2015Publication date: January 5, 2017Inventor: Bingxiang HUANG