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公开(公告)号：US12049825B2
公开(公告)日：2024-07-30
申请号：US17096435
申请日：2020-11-12
申请人： HYPERSCIENCES, INC.
发明人： Mark C. Russell
CPC分类号： E21C37/005 , E21D9/1053 , E21D9/128 , E21D9/003 , E21D9/006 , E21D9/108 , E21D9/112
摘要： Systems for forming or extending a tunnel or shaft within a working surface may include a ram accelerator assembly for accelerating a projectile into geologic material to weaken a region of the geologic material. A cutting tool may then be used to remove the weakened material. A collection assembly may be used to move debris away from the working surface while the projectile and cutting operations are performed to enable generally continuous use of the system. The number of projectiles that are accelerated and the rate at which projectiles are used may be controlled based on characteristics of the geologic material and the rate at which created debris may be removed.
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公开(公告)号：US20240141784A1
公开(公告)日：2024-05-02
申请号：US18031869
申请日：2022-09-30
发明人： Hongxiang JIANG , Zhencai ZHU , Songyong LIU , Gang SHEN , Xiaodi ZHANG , Huihe ZHAO , Hongsheng LI
CPC分类号： E21D9/108 , E21D9/003 , E21D9/1066 , E21D9/1093
摘要： Disclose are a roadway/tunnel excavation robot and an automatic cutting control method. The robot includes a rack, a moving platform, a supporting and stabilizing mechanism, a milling mechanism, a telescoping mechanism, an inclined cutting feed adjusting mechanism, a horizontal swinging mechanism, a lifting mechanism and a controller. The milling mechanism includes a drive unit, a milling shaft, an eccentric rotary casing, a high-pressure jet nozzle unit, a tension and compression sensor and a direction sensor. Through the deflection of a center line of an inner hole of the eccentric rotary casing, the milling mechanism drives a milling cutter head to carry out a rotational oscillation motion for rock breaking; and the milling cutter head is in discontinuous contact with a rock mass. The telescoping mechanism, the inclined cutting feed adjusting mechanism, the lifting mechanism and the horizontal swinging mechanism are controlled such that the milling mechanism performs coal rocks milling.
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3.发明授权公开(公告)号：US11965860B2
公开(公告)日：2024-04-23
申请号：US17618378
申请日：2020-12-08
发明人： Xiating Feng , Jiuyu Zhang , Feng Lin , Shiping Li , Xiangxin Su , Tianyang Tong
CPC分类号： G01N3/068 , G01N3/12 , G01N3/60 , G01N22/02 , G01N2203/0019 , G01N2203/0048 , G01N2203/0057 , G01N2203/0067 , G01N2203/06 , G01N2203/0647 , G01N2203/0658
摘要： Provided is a test system for hard rock breaking by a microwave intelligent loading based on true triaxial stress, including: a true triaxial stress loading device consisting of a loading frame and a rock sample moving structure; a microwave-induced hard rock breaking device consisting of an excitation cavity, a rectangular waveguide, a magnetron, a thermocouple, a circulator, a cold water circulation device, a flowmeter, a power meter, an automatic impedance tuner, a coupler, a microwave heater and a shielding cavity; and a dynamic rock response monitoring and intelligent microwave parameter control system consisting of a CCD industrial camera, a temperature acquisition device and an anti-electromagnetic high-temperature resistant acoustic wave-acoustic emission integrated sensor. According to the test system, the microwave-induced hard rock breaking test, dynamic monitoring temperature and rock breaking in microwave-induced breaking process and intelligent control over microwave power and heating time are achieved.
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公开(公告)号：US20240102782A1
公开(公告)日：2024-03-28
申请号：US18242028
申请日：2023-09-05
申请人： Sichuan University
发明人： Nuwen Xu , Biao Li , Quanfu Ding , Haoyu Mao , Peiwei Xiao , Xiang Zhou , Xinchao Ding , Yuepeng Sun , Yong Xia , Jun Liu , Zhiqiang Sun
摘要： The invention provides a method for evaluating deep-buried tunnel blasting parameters, and belongs to the technical field of mine engineering. The method comprises: setting multiple diverse blasting schemes; selecting a plurality of test sections with the same geological characteristics, the number of the test sections corresponding to the number of the blasting schemes; blasting the test sections using the blasting schemes, and obtaining diversified monitoring data of each test section; and comparing the diversified monitoring data to select the optimal blasting schemes for the test sections. According to the method for evaluating the deep-buried tunnel blasting parameters, by implementing different blasting schemes in test sections with the same geological characteristics, diversified monitoring data of the test sections are obtained and compared to select the optimal blasting schemes for the test sections, so as to ensure the safety and quality of blasting excavation of deep-buried tunnels.
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公开(公告)号：US20240035380A1
公开(公告)日：2024-02-01
申请号：US18224720
申请日：2023-07-21
申请人： China Railway 16th Bureau Group Co., Ltd , China Railway Eryuan Engineering Group Co., Ltd , Beijing Jiaotong University , China Railway 16th Bureau Group 1st Engineering Co., Ltd , China Railway 16th Bureau Group 4th Engineering Co., Ltd
发明人： Wuxian Wang , Su Yan , Liang Kuang , Jinwen Yang , Mingli Huang , Yitao Feng , Wanqiang Zhao , Liujie Jin , Weiming Zhang , Qian Dong , Liang Du
CPC分类号： E21D9/006 , E21B49/006 , E21B2200/20
摘要： A coal uncovering construction method for blasting large cross-section gas tunnels includes: analyzing stress distribution characteristics in front of a tunnel boring working face, and then determining a thickness calculation model of a reserved rock wall based on a limit equilibrium theory; establishing a tunnel model, simulating a construction condition and analyzing a construction result, and determining a thickness of the reserved rock wall; and fixing a detonator through a fixed sand ring, fitting the detonator with a construction hole by adjusting an adjustable protective plate, then embedding the detonator into a blast hole, and blasting the detonator for tunnel construction. Furthermore, an extension ring is fixed between the fixed sand ring and the adjustable protective plate.
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6.发明公开公开(公告)号：US20240003254A1
公开(公告)日：2024-01-04
申请号：US18346285
申请日：2023-07-03
申请人： Fucai HUA , Gang LEI , Zhihui YANG , Zhiyong ZHU , Beijing Urban Construction Design&Development Group Co., Limited
发明人： Fucai HUA , Gang LEI , Zhihui YANG , Zhiyong ZHU , Guangliang ZHENG , Jianye ZHU , Chunxin HU , Endi CHI , Chanhong WANG , Li WANG , Ning LI
摘要： Combination of an open and a hidden excavation for constructing a vertical orthogonal top exhausting air duct structure of a deeply-buried subway station is provided. Four horizontal air ducts: left and right piston air ducts, an exhaust air duct, and a fresh air duct are thrown out of the underground, respectively, leading to left and right piston air shafts, an exhaust air shaft, a fresh air shaft, and an entrance/exit of fire-fighting. The fourth underground floor is communicated with the hall floor of the station main body, and the fifth underground floor is communicated with the running tunnel and the platform floor of the station main body. During operation, the train will enter and exit the station through the fifth underground floor of the air duct, and the piston air and heat will enter the four transverse air ducts through the air duct main body.
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公开(公告)号：US20230296021A1
公开(公告)日：2023-09-21
申请号：US18006561
申请日：2021-04-15
发明人： Yongzheng Wu , Yukai Fu , Xiaowei Chu , Jinyu Chen , Jie He , Xinhua Liu , Xianzhi Meng
IPC分类号： E21D9/00
CPC分类号： E21D9/001
摘要： A three-level prevention and control method for a rock burst roadway, the method comprising: pre-weakening a thick and hard rock layer above a roadway before the roadway is excavated; carrying out prestress support, pressure relief and reinforcement when the roadway is excavated; and carrying out stress transfer on an advance abutment pressure, and arranging a composite energy absorption protective structure around the roadway before the mining of a working face. By coordinating the spatio-temporal relationship between pressure relief, support and prevention, the energy dissipation in the rock burst roadway is changed from an unstable, disorderly and uncontrollable dissipation state to a stable, orderly and controllable dissipation state.
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公开(公告)号：US11761334B2
公开(公告)日：2023-09-19
申请号：US17996664
申请日：2022-01-17
发明人： Shaoyi Xu , Zhencai Zhu , Wei Li , Wenting Lu , Gang Shen , Songyong Liu , Fangfang Xing , Hongxiang Jiang , Lei Si
CPC分类号： E21D9/003 , E21C35/24 , E21C39/00 , E21D9/108 , E21D9/1006
摘要： An apparatus includes a current excitation source, a roadheader telescopic protection cylinder, an electric rotating apparatus, auxiliary cutting teeth, a cutting head entity, a transmission shaft, an optical fiber ring protective housing, an optical fiber ring, an optical fiber current sensor control unit and a recovery electrode. The apparatus transmits an auxiliary current Ie and a monitoring current Id to a coal seam. The auxiliary current Ie and the monitoring current Id are homologous currents that are incompatible, and the auxiliary current Ie squeezes the monitoring current Id, so the monitoring current Id monitors the environment of the coal seam. The monitoring current Id flows to the coal seam as, and a return current If flows through the transmission shaft and a roadheader expansion part. The optical fiber ring measures the return current If, when the roadheader is heading forward and encounters abnormal geological bodies.
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公开(公告)号：US20230220646A1
公开(公告)日：2023-07-13
申请号：US18119051
申请日：2023-03-08
发明人： James Helliwell , Alan Meeks , Steve Jordan
摘要： Jet grouting involves injecting grout into geological material to improve its quality; however, use of jet grouting is limited to situations in which the injection systems can be positioned relatively close to the region to be improved. This can be impractical (for example in heavily built up areas, rough terrain or beneath the seabed) or inconvenient (for example where closing a tunnel would be required). The present invention enables deployment equipment 41 to be passed down a bore in order to deploy material and/or equipment through a hole in the lining of a bore 43 into the underlying geology. In this way, underground assets may be repaired from a location external to the asset, allowing repair in situations where it would be impossible or cost-prohibitive to do so with conventional ground treatment techniques.
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公开(公告)号：US20230193758A1
公开(公告)日：2023-06-22
申请号：US18108596
申请日：2023-02-11
发明人： Steve Jordan , Alan Meeks
CPC分类号： E21D9/0671 , E21D9/03 , E21D9/001 , E21D9/0621
摘要： Tunnel Boring Machines (TBMs) are known that comprise a large metal cylindrical shield fronted by a rotating cutting wheel and containing a chamber where the excavated soil is deposited (and optionally mixed with slurry for extraction, depending on the type of geological/soil conditions). However, TBMs have various disadvantages including the stop-start nature of their tunnelling, and that a single TBM cannot easily transition between different rock/soil types (especially heavily fractured and sheared rock layers). The invention provides a tunnelling shield provided with jet grouting tools arranged to project from a leading edge thereof. In this way, the quality of the geological material into which the tunnel is being excavated may be improved dynamically as part of the excavation process.
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