Patents Assigned to Institute of Rock and Soil Mechanics, Chinese Academy of Sciences
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Publication number: 20230184736Abstract: A multiphase flow cylindrical model test system includes a loading structure, a multiphase flow displacement model bucket, a data acquisition and analysis system, a flexible seepage model bucket and a dynamic control system. A multi-parameter test method in the displacement process of pollutants in three-dimensional multi-field and multiphase media is reasonably configured based on the sequential and superimposed application requirements of heat and steam in the thermal enhanced soil vapor extraction process.Type: ApplicationFiled: October 20, 2022Publication date: June 15, 2023Applicant: INSTITUTE OF ROCK AND SOIL MECHANICS, CHINESE ACADEMY OF SCIENCESInventors: Qiang XUE, Zhixiang CHEN, Yong WAN, Mingli WEI, Jiangshan LI, Lei LIU, Yijun CHEN, Yuan LI
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Publication number: 20230131570Abstract: A method for determining mechanical performance of the road includes the following: acquiring an initial subgrade reaction modulus ks of a subgrade of a target road section by using a field plate-bearing test process; acquiring a preset load p of the subgrade and geocell parameters of a preset geocell of the subgrade; calculating a composite subgrade reaction modulus kr of the subgrade on condition that the roadbed is under a reinforced working condition by a composite modulus calculation formula; calculating an equivalent thickness RP of the roadbed under the reinforced working condition by a depth adjustment calculation formula; and outputting the composite subgrade reaction modulus kr and the equivalent thickness RP.Type: ApplicationFiled: June 26, 2022Publication date: April 27, 2023Applicant: INSTITUTE OF ROCK AND SOIL MECHANICS, CHINESE ACADEMY OF SCIENCESInventors: Zheng LU, Yang ZHAO, Hailin YAO, Chuxuan TANG, Jie LIU
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Patent number: 11634987Abstract: A safe early warning method and device for full-section tunneling of a tunnel featuring dynamic water and weak surrounding rock, comprising establishing a dynamic coordinate system with an origin thereof moving along a tunnel excavation line, recording the moving distance of the origin, conducting three-dimensional laser scanning with the origin as a center to obtain point cloud data including coordinate data, collecting surrounding rock data; conducting deformation fitting on the point cloud data, calculating a fitting residual error, removing a noisy point, and conducting preprocessing; combining data of preprocessed point cloud, surrounding rock, and the tunnel excavation line to construct a tunnel excavation dynamic model; conducting stress analysis according to the model and determining whether to send out a safety early warning signal.Type: GrantFiled: September 17, 2021Date of Patent: April 25, 2023Assignee: Institute of Rock and Soil Mechanics, Chinese Academy of SciencesInventors: Hongming Luo, Jun Gao, Shanxiong Chen, Xiao Lin, Lingfa Jiang, Liyun Yang, Min Chen, Yu Tang, Dean Liu, Sheng Wang, Xuejun Peng, Wenguo Yang, Xiaobo Xie, Xingli Li, Dexing Wu, Xiaozhen Xiang
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Publication number: 20230120870Abstract: Disclosed is a dual channel nondestructive testing method for a rock bolt and related devices. The method includes: determining a target phase difference and an instantaneous phase difference of the first received signal and the second received signal; determining an integral instantaneous phase difference between the first received signal and the second received signal based on the target phase difference and an instantaneous phase difference; determining a length of the exposed section of the rock bolt, a length of the rock bolt and a position of a grouting defect based on the integral instantaneous phase difference, a first velocity of the acoustic signal propagating in an exposed section of the rock bolt and a second velocity of the acoustic signal propagating in an anchor section of the rock bolt.Type: ApplicationFiled: November 18, 2021Publication date: April 20, 2023Applicant: Institute of Rock and Soil Mechanics, Chinese Academy of SciencesInventors: Liu LIU, Shaojun LI, Quan JIANG, Yaxun XIAO, Guangliang FENG
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Publication number: 20230094439Abstract: The invention provides a self drilling side pressure simulation test device and method for a formation containing natural gas hydrate, belonging to the technical field of geotechnical mechanics. The device comprises a reactor, a cutting tool, a mud conveying mechanism and a side pressure testing device. The reactor is used to fill the simulated substance of the formation containing natural gas hydrate to be tested. The cutting tool is arranged in the reactor, and the cutting tool can move up and down relative to the reactor. One end of the mud conveying mechanism is connected with the reactor, for outputting the mud cut by the cutting tool from the reactor; The side pressure test device can complete the side pressure test experiment with the cutting tool moving to the set depth. The method is implemented based on the device. The in-situ test method can directly test the engineering mechanical parameters of the formation containing natural gas hydrate.Type: ApplicationFiled: March 7, 2022Publication date: March 30, 2023Applicant: INSTITUTE OF ROCK AND SOIL MECHANICS, CHINESE ACADEMY OF SCIENCESInventors: Houzhen WEI, Hao LIU, Qiang XUE, Qingshan MENG, Xiaoxiao LI, Rui XU
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Publication number: 20230077684Abstract: Disclosed are a multi-scale photoacoustic detection method of geological structure around a borehole and related devices. The method includes: obtaining depth information and direction information of the borehole; generating trajectory data of the borehole according to the depth information and direction information; obtaining an optical image of the geological structure around the borehole; generating a first velocity model according to the optical image and the trajectory data; obtaining low-frequency acoustic wave data and high-frequency acoustic wave data of the geological structure around the borehole; performing a full waveform inversion on the first velocity model according to the low-frequency acoustic wave data and the high-frequency acoustic wave data to obtain a second velocity model; and determining the geological structure around the borehole according to the second velocity model.Type: ApplicationFiled: October 2, 2021Publication date: March 16, 2023Applicants: Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, WUHAN CHANGSHENG MINE SECURITY TECHNOLOGY LIMITEDInventors: Shaojun LI, Liu LIU, Quan JIANG, Fengjuan TAO, Chunsheng LIU
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Patent number: 11604128Abstract: The invention provides a self drilling side pressure simulation test device and method for a formation containing natural gas hydrate, belonging to the technical field of geotechnical mechanics. The device comprises a reactor, a cutting tool, a mud conveying mechanism and a side pressure testing device. The reactor is used to fill the simulated substance of the formation containing natural gas hydrate to be tested. The cutting tool is arranged in the reactor, and the cutting tool can move up and down relative to the reactor. One end of the mud conveying mechanism is connected with the reactor, for outputting the mud cut by the cutting tool from the reactor; The side pressure test device can complete the side pressure test experiment with the cutting tool moving to the set depth. The method is implemented based on the device. The in-situ test method can directly test the engineering mechanical parameters of the formation containing natural gas hydrate.Type: GrantFiled: March 7, 2022Date of Patent: March 14, 2023Assignee: INSTITUTE OF ROCK AND SOIL MECHANICS, CHINESE ACADEMY OF SCIENCESInventors: Houzhen Wei, Hao Liu, Qiang Xue, Qingshan Meng, Xiaoxiao Li, Rui Xu
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Patent number: 11492905Abstract: A lidar-based convergence deformation monitoring system for surrounding rock around a TBM shield region, including a data acquisition module. The data acquisition module includes: a lidar, a push-rod motor, an H-bridge circuit, a power supply module, an ARM chip, a guide rod, a linear bearing, a tempered glass cover and a protective case. The lidar and the push-rod motor are connected to a lidar connector to acquire raw data of the surrounding rock and store the raw data in the ARM chip. A middle portion of a top plate of the protective case allows the lidar to extend out of the protective case. The protective case is fastened to an inner wall of the TBM shield through two mounting brackets on both sides of the protective case, and the inner wall facilitates the lidar to extend out of the protective case to perform a measurement.Type: GrantFiled: August 30, 2019Date of Patent: November 8, 2022Assignees: Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan UniversityInventors: Xing Huang, Quansheng Liu, Xianze Xu, Tong Zheng, Xiaoping Zhang, Fengqiu Xu
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Patent number: 11491444Abstract: The invention discloses a preparation method and application of in-situ high-efficiency degradation carbon based material of VOCs in landfill based on waste regeneration, which comprises the following steps: air drying the agricultural and forestry wastes to a moisture content of 0.001 wt %˜20 wt %, and the agricultural and forestry wastes mainly include: straw, wheat straw, leaves, branches, weeds, crushing them to a particle size of 0-50 mm with a grinder, and then using urea or amide as modifier The nitrogen enriched biochar was prepared by mixing the crushed agricultural and forestry wastes with a mass ratio of 1:50-1:10; the nitrogen enriched biochar was prepared by retorting the nitrogen doped agricultural and forestry wastes at 300-600° C. for 20-60 min, and then cooling them rapidly; the nitrogen enriched biochar was mixed with the sewage sludge with a moisture content of 90-98 wt.Type: GrantFiled: January 21, 2020Date of Patent: November 8, 2022Assignee: INSTITUTE OF ROCK AND SOIL MECHANICS, CHINESE ACADEMY OF SCIENCESInventors: Yong Wan, Lei Liu, Linbo Qin, Jiangshan Li, Yijun Chen
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Patent number: 11326449Abstract: Disclosed is a method for determining three-dimensional in-situ stress based on displacement measurement of borehole wall, including the following steps: selecting a testing borehole section for in-situ stress testing; arranging 6-9 measurement points in the testing borehole section; using a coring drill to perform a radial cut around the displacement measurement device to relieve the stress at the measurement point; cutting off the drilled core by the coring drill; recovering the sidewall coring device and removing the cores, and then measuring the elastic deformation parameters of each core; The beneficial effect of the technical scheme proposed in this disclosure is: the method provided by this disclosure overcomes the disadvantage that the measurement can only be performed at the bottom of a borehole and thus it has a wider application range.Type: GrantFiled: February 26, 2020Date of Patent: May 10, 2022Assignee: INSTITUTE OF ROCK AND SOIL MECHANICS, CHINESE ACADEMY OF SCIENCESInventors: Zhenjun Wu, Hua Tang, Yuqiao Qin
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Patent number: 11280180Abstract: The disclosure relates to the field of geotechnical engineering investigation in the civil engineering field. A portable in-situ gas pressure measuring device for a shallow gas-bearing stratum and a measuring method thereof are provided, the device includes a static cone penetrometer, a pressure-sensor control system, a static cone penetration rod and a probe. The static cone penetrometer is connected with the static cone penetration rod, the static cone penetration rod is connected with the probe; the probe is connected with the pressure-sensor control system. The portable in-situ pressure measuring device for a shallow gas-bearing stratum has simple structure and clear principle and is conveniently assembled and disassembled and easy to popularize and provides a measuring method.Type: GrantFiled: October 30, 2020Date of Patent: March 22, 2022Assignee: INSTITUTE OF ROCK AND SOIL MECHANICS, CHINESE ACADEMY OF SCIENCESInventors: Yong Wang, Lingwei Kong, Kaiwen Chen, Fuxue Sun, Haoqiang Li, Bijun Chen
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Patent number: 11169289Abstract: The present invention discloses a sensing-acquisition-wireless transmission integrated microseismic monitoring system, comprising a sensing unit, wherein the system further comprises an acquisition-wireless transmission unit. The acquisition-wireless transmission unit comprises a flameproof enclosure, an acquisition instrument, a battery, a wireless transmitter and a transmitting antenna. A push nut is arranged at an open end of the flameproof enclosure. A support stage is sheathed on an outer wall of the flameproof enclosure. A connection ring is movably sheathed on the open end of the flameproof enclosure. The push nut is connected to the connection ring. Multiple inner wing elastic plates are circumferentially arranged on the connection ring. The inner wing elastic plates are connected to corresponding expandable plate outer wings, respectively. The present invention further discloses a sensing-acquisition-wireless transmission integrated microseismic monitoring method.Type: GrantFiled: October 28, 2019Date of Patent: November 9, 2021Assignees: Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Hubei Seaquake Technology Co., Ltd.Inventors: Bingrui Chen, Xinhao Zhu, Huafang Li, Qiqing Fu
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Publication number: 20210108389Abstract: The invention discloses a method for strengthening and widening subgrade with geocell based on conductive polymer, which belongs to the technical field of road construction. It includes the following steps: slope cutting and bench excavation for the existing embankment slope; leveling for the treated existing subgrade; filling and widening subgrade on the basis of the leveled existing subgrade; compacting the widened subgrade so that the compacted widened subgrade and the leveled existing subgrade are in the same plane; on the widened Subgrade The geocell based on the conductive polymer is tensioned and fixed for the first time; the geocell based on the conductive polymer is compacted to obtain the widened Subgrade of the geocell based on the conductive polymer. It can minimize the possibility of longitudinal cracks between the existing subgrade and the widened subgrade.Type: ApplicationFiled: January 21, 2020Publication date: April 15, 2021Applicant: INSTITUTE OF ROCK AND SOIL MECHANICS, CHINESE ACADEMY OF SCIENCESInventors: Zheng LU, Jie TIAN, Hailin YAO, Hong TANG
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Patent number: 10794184Abstract: The invention discloses a retrievable sand consolidation anchor head prestressed anchor rod, an anchoring jack and an application method thereof, and belongs to the technical field of geotechnical engineering. The retrievable sand-consolidated anchor head pre-stressed anchor includes a bolt body 6, a rigid frame 5, a load member 1, a sand column 2, a pressure receiving member 4, a cut-off member 3, and an anchor pier 8. The anchoring jack includes a force transmitting frame 12, a first guiding plate 25, a second guiding plate 28, and a housing 13. The application method includes an anchoring method using the retrievable sand-consolidated anchor head prestressed anchor rod and a method of recovering the retrievable sand-consolidated anchor head pre-stressed anchor rod. After the anchoring of the reclaimed sand-consolidated anchor head pre-stressed anchor rod, the bolt body can be recovered and reused, and the operation is simpler and more environmentally friendly.Type: GrantFiled: July 23, 2019Date of Patent: October 6, 2020Assignees: INSTITUTE OF ROCK AND SOIL MECHANICS, CHINESE ACADEMY OF SCIENCES, Sanming Road and Bridge Group Co. Ltd., Guangxi Beitou Transportation Maintenance Technology Group Co., Ltd., Foshan Sanlongwan Urban Construction Co. Ltd.Inventors: Guanhua Sun, Yinghao Sun, Shan Lin, Yongtao Yang, Hong Zheng, Chunguang Li, Fuxing Liao, Junhui Luo, Qinglin Chen, Yi Xiong
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Publication number: 20200261847Abstract: The invention discloses a preparation method and application of in-situ high-efficiency degradation carbon based material of VOCs in landfill based on waste regeneration, which comprises the following steps: air drying the agricultural and forestry wastes to a moisture content of 0.001 wt % 20 wt %, and the agricultural and forestry wastes mainly include: straw, wheat straw, leaves, branches, weeds, crushing them to a particle size of 0-50 mm with a grinder, and then using urea or amide as modifier The nitrogen enriched biochar was prepared by mixing the crushed agricultural and forestry wastes with a mass ratio of 1:50-1:10; the nitrogen enriched biochar was prepared by retorting the nitrogen doped agricultural and forestry wastes at 300-600° C. for 20-60 min, and then cooling them rapidly; the nitrogen enriched biochar was mixed with the sewage sludge with a moisture content of 90-98 wt.Type: ApplicationFiled: January 21, 2020Publication date: August 20, 2020Applicant: INSTITUTE OF ROCK AND SOIL MECHANICS, CHINESE ACADEMY OF SCIENCESInventors: Yong WAN, Lei LIU, Linbo QIN, Jiangshan LI, Yijun CHEN
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Publication number: 20200191965Abstract: A lidar-based convergence deformation monitoring system for surrounding rock around a TBM shield region, including a data acquisition module. The data acquisition module includes: a lidar, a push-rod motor, an H-bridge circuit, a power supply module, an ARM chip, a guide rod, a linear bearing, a tempered glass cover and a protective case. The lidar and the push-rod motor are connected to a lidar connector to acquire raw data of the surrounding rock and store the raw data in the ARM chip. A middle portion of a top plate of the protective case allows the lidar to extend out of the protective case. The protective case is fastened to an inner wall of the TBM shield through two mounting brackets on both sides of the protective case, and the inner wall facilitates the lidar to extend out of the protective case to perform a measurement.Type: ApplicationFiled: August 30, 2019Publication date: June 18, 2020Applicants: Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan UniversityInventors: Xing HUANG, Quansheng LIU, Xianze XU, Tong ZHENG, Xiaoping ZHANG, Fengqiu XU
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Patent number: 10684203Abstract: A ring shear and seepage-coupled apparatus and a ring shear and seepage-coupled test system for rock and rock fracture under tension or compression stress are provided, relating to the technical field of mechanical testing devices. As to the ring shear and seepage-coupled apparatus, an axial piston rod is connected with an upper shear box, a torque transferring shaft is connected with a lower shear box, an axial force transducer is provided on the axial piston rod, a torque transducer is provided on the torque transmitting shaft, and a force transferring plate is fixedly connected onto the upper shear box. The force transferring plate is able to transmit a counter force for exerting a torque. Radial and circumferential seepage tests can be achieved by providing a seepage structure. The ring shear and seepage-coupled test system comprises a servo pump and the ring shear and seepage-coupled apparatus as mentioned above.Type: GrantFiled: April 11, 2018Date of Patent: June 16, 2020Assignee: Institute of Rock and Soil Mechanics, Chinese Academy of SciencesInventors: Hui Zhou, Yue Jiang, Jingjing Lu, Chuanqing Zhang, Dawei Hu, Yang Gao, Fanjie Yang, Yong Zhu
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Publication number: 20200102826Abstract: The invention discloses a retrievable sand consolidation anchor head prestressed anchor rod, an anchoring jack and an application method thereof, and belongs to the technical field of geotechnical engineering. The retrievable sand-consolidated anchor head pre-stressed anchor includes a bolt body 6, a rigid frame 5, a load member 1, a sand column 2, a pressure receiving member 4, a cut-off member 3, and an anchor pier 8. The anchoring jack includes a force transmitting frame 12, a first guiding plate 25, a second guiding plate 28, and a housing 13. The application method includes an anchoring method using the retrievable sand-consolidated anchor head prestressed anchor rod and a method of recovering the retrievable sand-consolidated anchor head pre-stressed anchor rod. After the anchoring of the reclaimed sand-consolidated anchor head pre-stressed anchor rod, the bolt body can be recovered and reused, and the operation is simpler and more environmentally friendly.Type: ApplicationFiled: July 23, 2019Publication date: April 2, 2020Applicant: INSTITUTE OF ROCK AND SOIL MECHANICS, CHINESE ACADEMY OF SCIENCESInventors: Guanhua SUN, Yinghao SUN, Shan LIN, Yongtao YANG, Hong ZHENG, Chunguang LI
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Patent number: 10564079Abstract: The present invention discloses a device, system and method triaxial compression test with/without jacket by gas confining pressure on rock, and belongs to the technical field of rock mechanics tests. The device includes a container, wherein an accommodating cavity is disposed in the container for placing a core sample, a first through hole and a second through hole are respectively disposed at an upper end of the container, the first through hole is used for penetration of an end cap for loading an axial pressure to the core sample, the second through hole is used for injecting a gas into the accommodating cavity so as to apply a gas confining pressure on the core sample, a third through hole is disposed at a lower end of a side wall of the container, and the third through hole is used for communicating the accommodating cavity with the triaxial cell so as to achieve pressure transfer and balance between the accommodating cavity and the triaxial cell.Type: GrantFiled: July 6, 2018Date of Patent: February 18, 2020Assignee: INSTITUTE OF ROCK AND SOIL MECHANICS, CHINESE ACADEMY OF SCIENCESInventors: Hongling Ma, Xilin Shi, Yuhao Zhang, Yintong Guo, Chunhe Yang, Yinping Li, Tongtao Wang, Yue Han, Hongwu Yin
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Publication number: 20190265138Abstract: The present invention discloses a device, system and method triaxial compression test with/without jacket by gas confining pressure on rock, and belongs to the technical field of rock mechanics tests. The device includes a container, wherein an accommodating cavity is disposed in the container for placing a core sample, a first through hole and a second through hole are respectively disposed at an upper end of the container, the first through hole is used for penetration of an end cap for loading an axial pressure to the core sample, the second through hole is used for injecting a gas into the accommodating cavity so as to apply a gas confining pressure on the core sample, a third through hole is disposed at a lower end of a side wall of the container, and the third through hole is used for communicating the accommodating cavity with the triaxial cell so as to achieve pressure transfer and balance between the accommodating cavity and the triaxial cell.Type: ApplicationFiled: July 6, 2018Publication date: August 29, 2019Applicant: INSTITUTE OF ROCK AND SOIL MECHANICS, CHINESE ACADEMY OF SCIENCESInventors: Hongling MA, Xilin SHI, Yuhao ZHANG, Yintong GUO, Chunhe YANG, Yinping LI, Tongtao WANG, Yue HAN, Hongwu YIN