公开(公告)号：US20240376810A1

公开(公告)日：2024-11-14

申请号：US18260454

申请日：2023-04-21

Applicant: Northeastern University

Inventor： Feng LIN ,  Xiating FENG ,  Chengxiang YANG ,  Jiuyu ZHANG ,  Shiping LI ,  Tianyang TONG ,  Xiangxin SU

IPC: E21B43/26 ,  E21B7/15

Abstract: A microwave drill bit capable of achieving fracturing of a borehole wall and end of a deep hard rock while drilling and a use method thereof are provided. The microwave drill bit comprises a microwave drill bit body, wherein a support frame front plate, a metal sleeve and a water inlet ring sequentially sleeve on the microwave drill bit body, the metal sleeve is connected with a rotary drive I mounted on the support frame front plate, the microwave drill body is connected with a microwave mode converter and a microwave splitter II respectively, the microwave mode converter and the microwave splitter II are connected with a microwave splitter I by a rectangular waveguide, the microwave splitter I is sequentially connected with a microwave rotating joint, a fixed waveguide and a microwave generator, and the microwave rotating joint is connected with a rotary drive II mounted on the support frame rear plate.

公开(公告)号：US20210223151A1

公开(公告)日：2021-07-22

申请号：US17059169

申请日：2019-12-20

Applicant: Northeastern University

Inventor： Xiating FENG ,  Mian TIAN ,  Fengpeng ZHANG ,  Jun TIAN ,  Chengxiang YANG ,  Jianyu PENG ,  Yuemao ZHAO ,  Jikai GAO ,  Jianqing JIANG

IPC: G01N3/12 ,  G01N3/36

Abstract: A true triaxial testing system for disturbance experiment with broadband and low amplitude of a high pressure hard rock includes a low-frequency disturbance true triaxial mechanism, a variable-frequency low-speed disturbance rod mechanism and a rapid single-side unloading type specimen box. The low-frequency disturbance true triaxial mechanism and the variable-frequency low-speed disturbance rod mechanism are distributed along a straight line. The low-frequency disturbance true triaxial mechanism is independently used or cooperates with the variable-frequency low-speed disturbance rod mechanism for use. The rapid single-side unloading type specimen box cooperates with the low-frequency disturbance true triaxial mechanism for use.

公开(公告)号：US20230273103A1

公开(公告)日：2023-08-31

申请号：US18024200

申请日：2022-01-05

Applicant: Northeastern University

Inventor： Benguo HE ,  Xiating FENG ,  Rongli ZHEN ,  Xiwei ZHANG ,  Chengxiang YANG ,  Mian TIAN ,  Hongpu LI ,  Hongyuan FU

IPC: G01N3/04

CPC classification number: G01N3/04 ,  G01N2203/0256 ,  G01N2203/0447 ,  G01N2203/0067

Abstract: Provided is a clamp of elastic box of stiff true-triaxial testing system and a displacement monitoring method for cuboid specimens. The clamp includes six pressing plates and eight plate springs, which form an elastic pressure box. One surface of the elastic pressure box can be disassembled, which simplifies the steps of rock sample mounting, and saving the mounting time. The springs connected with the pressing plates ensures the stability of the clamp but cannot affect the stress state of other surfaces of the rock sample during the test of the rock sample, thereby ensuring test accuracy. The invention further provides a displacement monitoring method for the rock sample by using the elastic box clamp. Six displacement sensors are mounted on the elastic box clamp, and the displacement of the rock sample can be monitored in real time.

公开(公告)号：US20230083396A1

公开(公告)日：2023-03-16

申请号：US17792592

申请日：2020-05-21

Applicant: Northeastern University

Inventor： Xiating FENG ,  Feng LIN ,  Shiping LI ,  Xiangxin SU ,  Jiuyu ZHANG

IPC: B02C19/18 ,  B02C23/02

Abstract: Provided is a use method of a gravity double-tube microwave-assisted grinding device capable of controlling ore thickness. The method comprises the following steps: step 1, estimating a metal mineral content of ores; step 2, calculating a penetration depth of the ores, step 3, determining a feeding size; step 4, determining a material thickness; step 5, determining a discharging speed Vp0; step 6, determining whether the gravity double-tube microwave-assisted grinding device capable of controlling ore thickness adopts a single-tube structure or a double-tube structure; and step 7, conveying the ores, performing heating, optimizing material parameters of the ores, and optimizing microwave parameters. By determining the feeding size of the ores and the material thickness, whether the gravity double-tube microwave-assisted grinding device capable of controlling ore thickness adopts the single-tube structure or the double-tube structure is determined, and the assisted grinding efficiency of a microwave equipment on the ores is improved.

公开(公告)号：US20220364467A1

公开(公告)日：2022-11-17

申请号：US17618365

申请日：2021-04-01

Applicant: Northeastern University

Inventor： Xiating FENG ,  Feng LIN ,  Chengxiang YANG ,  Jun TIAN ,  Tianyang TONG ,  Shiping LI

IPC: E21C51/00 ,  E21B15/00 ,  E21B25/00 ,  E21B3/02 ,  E21B7/00 ,  H01P5/12 ,  H02K11/30

Abstract: The invention relates to a low-power microwave coring machine suitable for lunar rocks and a use method. The low-power microwave coring machine suitable for lunar rocks comprises an equipment platform, wherein the support framework front plate and the support framework rear plate are mounted on the equipment platform in a sliding manner, a rear end surface of the support framework rear plate is connected with a front end of the microwave generator mounted on the equipment platform, a rear end of the microwave generator is sequentially connected with the fixed waveguide, the rotary waveguide, the power divider and the drill drum, the high-precision slip ring structure is mounted on the drill drum, the gear ferrules are arranged on an outer wall of the rotary waveguide and an outer wall of the drill drum.

公开(公告)号：US20250086333A1

公开(公告)日：2025-03-13

申请号：US18031457

申请日：2023-02-08

Applicant: Northeastern University

Inventor： Xiwei ZHANG ,  Xiating FENG ,  Chunyuan XUE ,  Lei SHI

IPC: G06F30/13 ,  F15B1/04 ,  F15B15/14 ,  G01M99/00

Abstract: Provided is a three-dimensional loading structure of an ultra-large physical simulation facility for deep engineering disasters. The three-dimensional loading structure comprises a horizontal ultra-large reaction frame, a vertical ultra-large reaction frame, ultra-long stroke lifting and locking hydraulic cylinders, five array distributed hydraulic actuator groups and a linear distributed hydraulic actuator group, wherein the horizontal ultra-large reaction frame adopts a frame structure being formed by splicing eight segments of arch beams, circular in an outer part and square in an inner part, and wrapped with prestressed carbon fibers, and the vertical ultra-large reaction frame adopts a double-beam four-column preload frame structure; the five array distributed hydraulic actuator groups are distributed around the horizontal ultra-large reaction frame and at a top of the vertical ultra-large reaction frame, and the linear distributed hydraulic actuator group is located at a center of a bottom of the vertical ultra-large reaction frame.

公开(公告)号：US20240319047A1

公开(公告)日：2024-09-26

申请号：US18028352

申请日：2023-02-08

Applicant: Northeastern University

Inventor： Xiating FENG ,  Xiwei ZHANG ,  Lei SHI

IPC: G01M99/00 ,  E21F17/00

CPC classification number: G01M99/005 ,  E21F17/00

Abstract: Provided is an ultra-large physical simulation facility for deep engineering disasters, including a long-time large-load loading system for a geological model, a 3D printing system of a deep oil, gas and water multiphase multi-component complex geological body model, a high-temperature-chemical-multiphase fluid collaborative injection, monitoring and control system, a robot excavation and monitoring system for a complex engineering structure in a model under deep geological environment, an intelligent ventilation system for a deep metal mine complex drilling, mining and transferring network, an intelligent filling system for a deep metal mine ultra-large stope, a deep-well enhanced geothermal safe intelligent mining system, an all-spatial-temporal intelligent high-precision monitoring system for an excavation and fracture process of a large-scale geological model, and an ultra-large multi-task intelligent collaborative main control and digital twin system for physical simulation tests.

公开(公告)号：US20200040717A1

公开(公告)日：2020-02-06

申请号：US16317738

申请日：2018-05-16

Applicant: NORTHEASTERN UNIVERSITY

Inventor： Xiating FENG ,  Gaoming LU ,  Yuanhui LI ,  Xiwei ZHANG ,  Jianhua WEN ,  Tianyang TONG ,  Yanhua GONG

IPC: E21B43/26 ,  E21B43/285 ,  E21B36/04

Abstract: A high-power microwave borehole fracturing device for an engineering rock mass includes a high-power microwave generator, a high-power microwave coaxial heater, a high-power low-loss microwave coaxial transmission line, and a microwave power adaptive regulation and control system. The high-power microwave generator includes a continuous wave magnetron, a permanent magnet, a waveguide excitation chamber, a coaxial circulator, a coaxial matching load, a coaxial coupling converter, a waveguide coaxial converter, and an output waveguide. The high-power microwave coaxial heater includes a microwave transmission inner conductor, a microwave transmission outer conductor, a microwave input connector, a microwave short circuit cap, and a conductor supporting cylinder. The high-power low-loss microwave coaxial transmission line includes an input end coaxial line, middle section coaxial lines, and an output end coaxial line. The microwave power adaptive regulation and control system includes an impedance matching regulator, a microwave power controller, and a temperature sensor.

公开(公告)号：US20240384643A1

公开(公告)日：2024-11-21

申请号：US18598189

申请日：2024-03-07

Applicant: Northeastern University

Inventor： Jun ZHAO ,  Xiating FENG ,  Mengfei JIANG ,  Jiachao XUE ,  Chengxiang YANG

IPC: E21B47/002 ,  E21B7/02

Abstract: Disclosed are a borehole fracture-deformation-wave velocity integrated intelligent sensing apparatus and method for an engineering rock mass. The apparatus includes an in-hole monitoring execution unit and an out-hole monitoring unit which are connected by a cable; the in-hole monitoring execution unit includes a hole-diameter-adaptive crawling robot and a combined multifunctional probe assembly; the probe assembly includes a high-definition wide-angle camera, a laser radar probe, and an acoustic transceiver probe, and all the probes may be freely combined; the hole-diameter-adaptive crawling robot is of a waterproof sealed shell structure and is capable of charging a pressure inside to realize leakage detection, and the hole-diameter-adaptive crawling robot adopts lift-type electric crawler walking mechanisms capable of automatically adjusting a supporting force to avoid sliding. The apparatus can be used for intelligent long-term monitoring of borehole fracture, deformation and wave velocity.

公开(公告)号：US20240248018A1

公开(公告)日：2024-07-25

申请号：US18546401

申请日：2023-02-23

Applicant: Northeastern University

Inventor： Benguo HE ,  Xiating FENG ,  Jie WANG ,  Rongli ZHEN ,  Hongpu LI ,  Mian TIAN ,  Zhibin YAO

IPC: G01N3/08

CPC classification number: G01N3/08 ,  G01N2203/0208 ,  G01N2203/0256

Abstract: A dual-direction synchronous loading method for a true-triaxial test apparatus includes the following steps: Step S1, loading a sample and adjusting the sample at a center of a sample box and a rigid loading frame; Step S2, setting parameters and sending action instructions through a computer control panel; and Step S3, collecting load signals collected by each sensor acquired by a PID controller, and coordinating a size of triaxial dual-direction loading loads to realize a single instruction dual-direction synchronous loading. The method ensures that a rock sample is kept at a center of a pressure chamber before being loaded, so that a focus of a loading axis is always at a same position as a center of the sample in space, and the function of synchronous loading of two loading actuators in the same direction under a single instruction can be achieved.