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公开(公告)号：US20240175360A1
公开(公告)日：2024-05-30
申请号：US18283756
申请日：2022-03-23
发明人： Karsten Hoehn , Scott Barnes
CPC分类号： E21D21/006 , E21D20/02 , E21D21/0006 , E21D21/008 , E21D21/02
摘要： A carbon fiber rock bolt including: an outer carbon fiber rope including a series of tow fibers; and an inner core material. As the tension on the rock bolt increases beyond a predetermined limit, the inner core material undergoes a spatial compression, whilst the angle of twist in the carbon fiber rope strands decreases, resulting in extension of the carbon fiber rock bolt, replicating the ductility seen in steel rock bolts.
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公开(公告)号：US11913338B2
公开(公告)日：2024-02-27
申请号：US17616647
申请日：2021-10-14
申请人： FUZHOU UNIVERSITY
发明人： Xuezhen Wu , Tao Deng , Zhenchang Guan , Yujing Jiang , Sihong Liu
CPC分类号： E21D9/01 , E21D20/021 , E21D20/025 , E21D21/008
摘要： The present invention relates to a support method of preset internal cable for in-situ tunnel expansion project, comprising a cable, lockset and an anchoring agent, wherein before the excavation of the newly-built tunnel, a borehole is drilled into the surrounding rock from the in-situ tunnel, and the cable is installed in the borehole and pre-stressed, so as to play a supporting role at the moment of excavation of the newly-built tunnel. The cable is fixed in the depth of the surrounding rock by the anchoring agent, and the lockset of the cable is set at the position of the excavation contour line of the newly-built tunnel inside the surrounding rock. The present invention provides a method that does not interfere with the excavation construction and can effectively support the surrounding rock of the expanded tunnel in advance. It breaks through the “excavation first and then supports” model in the previous tunnel construction, and uses the space of the in-situ tunnel for pre-support, and by applying prestress, the deformation of surrounding rock can be controlled to the maximum extent.
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3.发明公开公开(公告)号：US20230392500A1
公开(公告)日：2023-12-07
申请号：US18034256
申请日：2021-12-20
申请人： JMBG GMBH + CO KG
CPC分类号： E21D20/028 , E21D21/008
摘要： The disclosure relates to a hollow rod shear connector for stabilizing rock layers in mining, tunnel construction, civil engineering and rock construction, at least having a connector base with one or more outlet channels and a hollow rod which can be fastened to the connector base and comprises a static mixing apparatus adjoining the connector base, a cartridge, divided by a partition into two compartments, for receiving chemical fastening means, and a two-part plunger corresponding to the compartment division, wherein the static mixing apparatus consists of a plurality of mixing elements one behind the other, wherein the flow direction of the chemical fastening means is changed by greater than or equal to 150° and less than or equal to 210° at least twice along the static mixing apparatus. The present disclosure also relates to a method for setting a hollow rod shear connector in a rock layer.
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公开(公告)号：US20180291737A1
公开(公告)日：2018-10-11
申请号：US15578001
申请日：2016-06-23
CPC分类号： E21D21/0026 , E21D20/02 , E21D20/028 , E21D21/0006 , E21D21/0033 , E21D21/008
摘要： A rock bolt assembly includes a rock bolt with an elongate body between distal and proximal ends, a tubular sleeve with first and second ends, proximal and distal ends of the bolt projecting from first and second ends of the sleeve, a load bearing barrel centrally bored to engage the rock bolt between the sleeve's first end and the bolt's proximal end, which barrel is adapted at a forward end to engage with the sleeve's second end in sealing contact, and which barrel has at least one grout conduit between the barrel's exterior surface and the bore, which at least one conduit defines a part of a grout passage which communicates the exterior surface of the barrel with an interior of the sleeve, when the barrel is engaged with the sleeve, and a seal which seals the grout passage to grout outflow but accommodates inflow of grout from a source.
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公开(公告)号：US20180223664A1
公开(公告)日：2018-08-09
申请号：US15748418
申请日：2016-07-28
申请人： Royal IHC Limited
CPC分类号： E21D21/0033 , E21D20/00 , E21D21/0053 , E21D21/008
摘要： An anchoring device and method of securing an anchoring device to strata are disclosed. The anchoring device (1) includes a drilling rod (2) and an anchoring sleeve (3) at least partially surrounding the drilling rod (2), the drilling rod (2) comprising a driving end (31) for coupling to a drilling apparatus and a drilling end (32) with a drilling head (26) for drilling a hole in strata, wherein the device is configured to be coupled with and driven by a drilling apparatus to cause the drilling head (26) to drill a hole into strata and to force, as the hole is drilled, the anchoring sleeve (3) into the hole to an inserted position in which the anchoring sleeve (3) engages the surrounding strata.
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公开(公告)号：US09982537B2
公开(公告)日：2018-05-29
申请号：US15680640
申请日：2017-08-18
CPC分类号： E21D20/021 , E21D20/02 , E21D20/023 , E21D20/028 , E21D21/0006 , E21D21/0026 , E21D21/004 , E21D21/0046 , E21D21/008 , E21D21/0086
摘要： A rock bolt includes an elongate metallic body having a first end and an opposed second end, a threaded portion at the second end, for attaching thereto and locating thereon, a nut and a bearing plate, a mechanical anchor at, or at least partially located on, a first end portion of the body and a first resistive anchor, located between the threaded portion and the mechanical anchor.
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公开(公告)号：US20170298732A1
公开(公告)日：2017-10-19
申请号：US15514426
申请日：2015-09-22
发明人： Håkan Krekula , Leif Eriksson
IPC分类号： E21D21/00
CPC分类号： E21D21/0033 , E21D21/004 , E21D21/008 , E21D21/02
摘要： A rock bolt to be embedded in a borehole and a method of manufacturing a rock bolt, the rock bolt including an extended energy-absorbing part, the first end of the energy-absorbing part including an anchor and the second end of the energy-absorbing part including a screw joint for prestressing the rock bolt. The rock bolt includes an extended tubular part with a jacket and a first end section and a second end section, with an internal dimension that is larger than the external dimension of the energy-absorbing part and arranged in such a manner that it surrounds the energy-absorbing part.
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公开(公告)号：US09708809B2
公开(公告)日：2017-07-18
申请号：US14427624
申请日：2014-03-14
发明人： Darren Bruce Bennett
CPC分类号： E04B1/383 , B28D1/02 , E06B7/02 , E21D20/025 , E21D21/008 , Y10T408/60 , Y10T408/89
摘要： Disclosed is an anchor having a sleeve and a concentric shaft having head at one end with a rectangular plate through with the shaft interposed between the head and the adjacent end of the sleeve. A deformable plate is positioned on the shaft between the head and the sleeve so that movement of the sleeve along the shaft towards the head deforms the plate from a configuration where the plate is substantially confined to an area within the perimeter of the head into a substantially planar configuration where the perimeter of the plate extends at least partially beyond the perimeter of the head. Also disclosed is a method of fixing the anchor in a bore hole with the ends of the plate in an undercut in the bore hole and filling the bore hole with resin while venting air via a passage extending from adjacent to a closed end of the bore hole through a suitable cover.
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公开(公告)号：US09664042B2
公开(公告)日：2017-05-30
申请号：US14360755
申请日：2012-10-17
发明人： Frank Schmidt
CPC分类号： E21D21/0026 , E21D20/02 , E21D21/0046 , E21D21/008
摘要： An anchor fitted with a self-tapping thread and an anchor rod, whereby at least one axially oriented feed channel for a curable compound is arranged in the anchor rod. A head element on which the self-tapping thread is arranged is fastened to a first end of the anchor rod.
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公开(公告)号：US20160356014A1
公开(公告)日：2016-12-08
申请号：US15169196
申请日：2016-05-31
申请人： Eng Kiat Tng , Carrick Pierce
发明人： Eng Kiat Tng , Carrick Pierce
CPC分类号： E02D5/80 , E02D7/22 , E21D21/0046 , E21D21/008
摘要： An anchor member, spacers, nuts, anchor kits and methods of utilizing the same are provided. The anchor member has a threaded second end configured for engagement by a nut. In use, a first end of the anchor member is inserted in the ground with the second end extending out of the ground, such as through an aperture in a plate. One or more spacers are located over the anchor member. The nut is threaded onto the second end of the anchor member into engagement with the spacer(s). The threaded length of the second end of the anchor member and the length of the nut are selected to ensure a minimum desired contact distance and, in one embodiment, permit adjustability relative to the spacers.
摘要翻译： 提供锚固构件，间隔件，螺母，锚固套件及其利用方法。 锚定构件具有构造成用螺母接合的螺纹第二端。 在使用中，锚定构件的第一端被插入地面，其中第二端延伸出地面，例如通过板中的孔。 一个或多个间隔件位于锚定构件上方。 螺母被拧到锚固构件的第二端上，与间隔物接合。 选择锚定构件的第二端的螺纹长度和螺母的长度以确保最小期望的接触距离，并且在一个实施例中允许相对于间隔件的可调节性。
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