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1. 发明申请

US20210340872A1 A Single-Anchor Centrally Grouted Full-Length Anchored Steel Wire Bundle and Supporting Method Thereof 有权
公开(公告)号：US20210340872A1
公开(公告)日：2021-11-04
申请号：US16624541
申请日：2018-10-29
申请人： China University of Mining and Technology
发明人： Nong ZHANG , Zhengzheng Xie , Junyao Zhou , Qun Wei
IPC分类号： E21D20/02 , E21D21/00
摘要： The present invention provides a single-anchor centrally grouted full-length anchored steel wire bundle and a supporting method thereof, which are suitable for use in supporting engineering for the deep dynamic pressure roadway or soft rock roadway. The steel wire bundle consists of parallel steel wires and a central pipe, wherein multiple strands of parallel steel wires are arranged around the central pipe, the central pipe is provided with a slurry output bracket which divides the parallel steel wires into a front part and a rear part, the front part is provided with large stirring jackets, and the rear part is provided with a threaded casing on its tail end. After the coal is cut by a tunneling machine and a roadway is formed, the steel wire bundle is anchored at the ends, and the roadway tunneling speed is increased on a premise of ensuring roadway safety; central grouting is carried out for the steel wire bundle with a pump truck without affecting the quick roadway tunneling, so as to anchor the steel wire bundle in full length and ensure long-time stability of the roadway. The length of the steel wire bundle may be selected according to the geological conditions and the mining environment of the mine, and is not limited by the height of the roadway; the single-anchor centrally grouted supporting method realizes full-length anchoring of the steel wire bundle, and it not only improves the roadway tunneling speed and relieves mining imbalance in the mine, but also solves the problem of large deformation of the roadway.

2. 发明授权

US11162882B2 Integral clamping steel strand drawing test apparatus, and method for using same 有权
公开(公告)号：US11162882B2
公开(公告)日：2021-11-02
申请号：US16607351
申请日：2018-09-13
申请人： China University of Mining and Technology
发明人： Nong Zhang , Zhengzheng Xie , Junyao Zhou , Zhe Xiang , Xinyue Li
IPC分类号： G01N3/10 , B21C1/02 , G01N3/04
摘要： Disclosed are an integral clamping steel strand drawing test apparatus, and a method for using same, wherein same are suitable for use in a steel strand mechanical property test. The apparatus comprises a rectangular lower base (13) and a rectangular upper base (14), with a hydraulic telescopic mechanism being provided between the lower base (13) and the upper base (14), the hydraulic telescopic mechanism being provided with an integral clamping mechanism, a steel strand test piece (4) to be tested being provided in the integral clamping mechanism, the steel strand test piece (4) to be tested being provided with a plurality of binding protective devices (2), and a safety protection door (16) being provided outside the hydraulic telescopic mechanism. During a steel strand drawing test, the property of a steel strand itself is fully brought into play, and the integrity of the steel strand test piece (4) is maintained, thereby being able to accurately reflect various mechanical properties of the drawn steel strand while preventing damage to the device and injuring an operator caused by a fracture in a single strand or a plurality of strands of the steel strand during the test. The device is simple and easy to operate, and has good practicability and promotional and application value.

3. 发明授权

US11384638B2 Apparatus for controllably unfolding flexible mesh for continuous miner, and continuous miner 有权
公开(公告)号：US11384638B2
公开(公告)日：2022-07-12
申请号：US17059219
申请日：2018-10-29
申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY
发明人： Nong Zhang , Zhengzheng Xie , Qun Wei , Junyao Zhou
IPC分类号： E21D11/40 , E21C25/10
摘要： An apparatus for controllably unfolding a flexible mesh for a continuous miner includes a mesh roll storage rack, a height adjustment post, a mesh rolling shaft and a flexible mesh. The flexible mesh includes a mesh roll and an unfolded mesh. The mesh roll and the unfolded mesh are an integrated structure. The mesh roll is located on the mesh roll storage rack. The unfolded mesh is clamped on the mesh rolling shaft, and is pressed on a cut un-supported tunnel roof via a roof bolt. The mesh rolling shaft is rotatably connected to a top portion of the height adjustment post. The mesh roll storage rack and the height adjustment post are both mounted on the continuous miner. The mesh rolling shaft is located at a back end of the mesh roll storage rack. A limit mechanism and a damping mechanism are disposed on the mesh rolling shaft.

4. 发明授权

US10280750B2 Full-roadway full-process full-cross-section surface deformation monitoring device and method 有权
公开(公告)号：US10280750B2
公开(公告)日：2019-05-07
申请号：US15744061
申请日：2017-06-07
申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY
发明人： Nong Zhang , Zhengzheng Xie , Changliang Han , Dongjiang Pan
IPC分类号： E21F17/18 , G01B11/30 , E21D20/02 , E21D20/00 , E21F17/00 , E21F17/02
摘要： The present invention provides a full-roadway full-process full-cross-section deformation monitoring device and a monitoring method thereof, which are applicable to the field of roadway surface deformation monitoring. A monitoring station is deployed utilizing an anchor rope, a supporting frame and a rotary laser measuring device are connected via a threaded sleeve at the tail end of the anchor rope, the rotary laser measuring device can rotate and drive a laser range finder to rotate, the data of a plurality of cross sections can be measured at the same time with one monitoring station, the data is processed by computer programming, so that the measurement data is converted into coordinates in a three-dimensional coordinate system, and thereby full-roadway full-process full-cross-section digital imaging is realized. The monitoring method attains high measuring accuracy, involves very low artificial error, supports intuitive observation of dynamic roadway deformation condition, can provide accurate warning for roof pressure condition, and provides a technical guarantee for safety of the downhole workers.

5. 发明授权

US11280195B2 Single-anchor centrally grouted full-length anchored steel wire bundle and supporting method thereof 有权
公开(公告)号：US11280195B2
公开(公告)日：2022-03-22
申请号：US16624541
申请日：2018-10-29
申请人： China University of Mining and Technology
发明人： Nong Zhang , Zhengzheng Xie , Junyao Zhou , Qun Wei
IPC分类号： E21D21/00 , E21D20/02
摘要： A single-anchor centrally grouted full-length anchored steel wire bundle and a supporting method thereof are described herein. The steel wire bundle consists of parallel steel wires and a central pipe, wherein multiple strands of parallel steel wires are arranged around the central pipe, the central pipe is provided with a slurry output bracket which divides the parallel steel wires into a front part and a rear part, the front part is provided with large stirring jackets, and the rear part is provided with a threaded casing on its tail end. After the coal is cut by a tunneling machine and a roadway is formed, the steel wire bundle is anchored at the ends, and the roadway tunneling speed is increased; central grouting is carried out for the steel wire bundle so as to anchor the steel wire bundle in full length and ensure long-time stability of the roadway.

6. 发明授权

US11199484B2 Device and method for testing working performance of anchor rod cable by simulating rock stratum fracture and separation on basis of electromagnetic action 有权
$Device and method for testing working performance of anchor rod cable by simulating rock stratum fracture and separation on basis of electromagnetic action$
公开(公告)号：US11199484B2
公开(公告)日：2021-12-14
申请号：US16487425
申请日：2018-09-13
申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY
发明人： Nong Zhang , Zhengzheng Xie , Junyao Zhou , Yuxin Yuan , Xinyue Li
IPC分类号： G01N3/10
摘要： A device and method for testing the working performance of an anchor rod cable by simulating stratum fracture and separation on the basis of electromagnetic action, applicable to the technical field of testing working performance of anchor rod cables by simulating a tunnel field. The device comprises a top base (1) and a bottom base (2); a plurality of hydraulic vertical columns (3) are provided between the top base (1) and the bottom base (2); the plurality of hydraulic vertical columns (3) are provided thereon with clamping devices, and an electromagnetic block (9) is disposed between two groups of drawing block-shaped clamp holders (4). Using the attraction and repulsion forces of the electromagnetic block (9), the laminated electromagnetic block generates the separating or fracturing effect in a loading process so as to simulate the interaction between surrounding rock and an anchor rod cable test piece (8) in the field and accurately record various performance parameters of a working status of the anchor rod cable test piece (8), thereby providing positive guidance for directing field work.

7. 发明申请

US20210189876A1 CLEAN AND EFFICIENT COAL MINING METHOD 有权
公开(公告)号：US20210189876A1
公开(公告)日：2021-06-24
申请号：US16080250
申请日：2018-03-13
申请人： China University of Mining and Technology
发明人： Nong Zhang , Zhengzheng Xie , Junyao Zhou
IPC分类号： E21F15/00 , E21F15/06
摘要： The present invention relates to a clean and efficient coal mining method, which is applicable to the field of solid waste treatment in mines. The method is characterized in: the width of short-segment working faces is designed according to the discharge volume of solid wastes produced in a mine, including downhole gangue and surface coal ash; first, two adjacent short-segment working faces are mined and backfilled, and the edges of the filling face and the solid coal side are supported with anchor rods while roadways are retained; the roadways retained at the two short-segment working faces and the coal mass in the middle constitute a long-segment working face mining system; the long-segment working face is mined, the short-segment backfilled working faces at the two sides are mined and backfilled at the same time, and the gangue produced at the long-segment working face is transported to the short-segment working faces to fill, so that a continuous mining system that consists of backfill mining at short-segment working faces and efficient stopping at long-segment working faces is realized. The method provided in the present invention can deal with all surface and downhole solid wastes in a mine, reduces the cost of gangue treatment, and mitigates damages to the ecological environment; besides, the method utilizes solid wastes to fill the gobs to form roadways, eliminates coal pillars and improve resource recovery rate.

8. 发明授权

US10907474B2 Reaming and self-rotating anchor rod and using method thereof 有权
公开(公告)号：US10907474B2
公开(公告)日：2021-02-02
申请号：US15768219
申请日：2017-06-07
申请人： China University of Mining and Technology
发明人： Nong Zhang , Zhengzheng Xie , Changliang Han
IPC分类号： E21D20/00 , E21D21/00 , E21F17/18 , E21D20/02 , E21F17/00 , E21F17/02 , G01B11/30
摘要： A reaming and self-rotating anchor rod includes a rod body, a drill bit, a connecting member, a tray, and a nut. One end the connecting member is snap-fixed to the tail part of the rod body, the other end of the connecting member is connected to an anchor rod bolter. The rod body has an annular protrusion at its middle part to block powder so that the powder fills up the clearance between the rod body and the coal mass. The drill bit has female threads and can be screwed into the front part of the rod body, and the drill bit has baffle pawls and spiral grooves on its side surface.

9. 发明授权

US11078021B2 Steel belt conveying apparatus for transporting and bolting machine and transporting and bolting machine 有权
公开(公告)号：US11078021B2
公开(公告)日：2021-08-03
申请号：US17057112
申请日：2018-10-29
申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY
发明人： Nong Zhang , Zhengzheng Xie , Junyao Zhou , Qun Wei
IPC分类号： B65G15/48 , B65G15/30 , B65G15/60 , B65G41/00
摘要： A steel belt conveying apparatus includes upper and lower horizontal conveying portions, left and right inclined conveying chains, a connecting rod frame, an inclined frame, a drive portion, and a height adjustment cylinder. The left inclined conveying chain is separately connected to the upper and lower horizontal conveying portions. The right inclined conveying chain is separately connected to the upper and lower horizontal conveying portions. A top portion of the connecting rod frame is hingedly connected to an upper horizontal frame of the upper horizontal conveying portion. A bottom portion is hingedly connected to a lower frame of the lower horizontal conveying portion. A top portion of the inclined frame is hingedly connected to an upper horizontal drive shaft of the upper horizontal conveying portion, and a bottom portion is hingedly connected to a lower horizontal drive shaft of the lower horizontal conveying portion.

10. 发明申请

US20200319069A1 Integral Clamping Steel Strand Drawing Test Apparatus, And Method For Using Same 审中-公开
公开(公告)号：US20200319069A1
公开(公告)日：2020-10-08
申请号：US16607351
申请日：2018-09-13
申请人： China University of Mining and Technology
发明人： Nong Zhang , Zhengzheng Xie , Junyao Zhou , Zhe Xiang , Xinyue Li
IPC分类号： G01N3/10 , B21C1/02 , G01N3/04
摘要： Disclosed are an integral clamping steel strand drawing test apparatus, and a method for using same, wherein same are suitable for use in a steel strand mechanical property test. The apparatus comprises a rectangular lower base (13) and a rectangular upper base (14), with a hydraulic telescopic mechanism being provided between the lower base (13) and the upper base (14), the hydraulic telescopic mechanism being provided with an integral clamping mechanism, a steel strand test piece (4) to be tested being provided in the integral clamping mechanism, the steel strand test piece (4) to be tested being provided with a plurality of binding protective devices (2), and a safety protection door (16) being provided outside the hydraulic telescopic mechanism. During a steel strand drawing test, the property of a steel strand itself is fully brought into play, and the integrity of the steel strand test piece (4) is maintained, thereby being able to accurately reflect various mechanical properties of the drawn steel strand while preventing damage to the device and injuring an operator caused by a fracture in a single strand or a plurality of strands of the steel strand during the test. The device is simple and easy to operate, and has good practicability and promotional and application value.

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