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WO/2019/140492A1 |
The present invention provides a rock bolt (14) comprising a cable (21) formed from multiple wound strands. The rock bolt also comprises a sleeve (16) surrounding the cable along at least portions of the cable, and multiple collars (17) ...
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WO/2019/142000A1 |
The present invention provides a tunnel boring apparatus (10) for a tunnel boring machine (1), comprising a rotatable drill head (12) having a boring face; a plurality of drill elements (14) mounted to the boring face; wherein the plural...
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WO/2019/141882A1 |
The invention relates to a removable modular support structure, for provisionally supporting a section of railway track (12) during the execution of work under same, which comprises an adjustment device (18) that facilitates the relative...
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WO/2019/135892A1 |
Rock anchors, inflation chucks, and inflation systems such as those described herein, allow for substantially complete draining of fluids from interior volumes of the rock anchors. In various situations, corrosive fluids may be introduce...
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WO/2019/135682A1 |
A tunnel-boring machine (3) comprising a frame (6), a rotating boring head (4) with rolling disc cutters (5) supported at a front end of a first frame portion (6a), a second, polygonal frame portion (6b) extending rearwards from the firs...
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WO/2019/133095A1 |
A mine roof support comprises two or more frusto-conical, tubular sections, the sections each flared outwardly from an upper end to a lower end thereof, a skirt portion of a section being received and secured within a neck portion of a s...
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WO/2019/128920A1 |
Disclosed is a new split-type shaft boring machine. Said boring machine comprises a ground device (1), a multi-layer hanging scaffold (2) and a main boring machine (3), the main boring machine (3) comprises a cutterhead (301), a stabiliz...
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WO/2019/128922A1 |
Disclosed is a cutter disk for vertical shaft sinking, comprising a central block (1), side blocks (2), and a slag discharging mechanism (5), wherein the side blocks are evenly mounted on the outer wall of the lower part of the central b...
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WO/2019/128921A1 |
Disclosed is an annular bracing boot propulsion system for vertical shaft sinking, the system comprising an intermediate column (8), several boot plates (1) and several bracing cylinders (2), wherein the boot plates (1) and the bracing c...
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WO/2019/119901A1 |
A synchronous anchor and a drilling and anchoring method for a hollow helical anchor bolt. Construction machine tools and materials comprise a double-rotating-shaft drilling machine (1), the hollow helical anchor bolt (4), a contractible...
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WO/2019/119048A1 |
The present disclosure relates to a friction bolt (100,200) comprising: a generally tubular friction bolt (110) body having a central longitudinal axis and longitudinally extending between a friction bolt body leading end (111) and a fri...
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WO/2019/124935A1 |
The present invention relates to a tunnel construction method using a grouting technology, wherein when the length of the first excavation section is A1, the first excavation is performed over a shorter length by ΔB1 than A1, that is, o...
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WO/2019/119900A1 |
Disclosed is a low-tension anchor cable construction method capable of reducing prestress loss. According to the sequence where an ultra-quick anchoring agent (1) is jacked first and a slow-speed anchoring agent (2) is jacked thereafter,...
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WO/2019/114224A1 |
A bag-shaped filling structure for an underground coal mine and a use method therefor. The bag-shaped filling structure for an underground coal mine comprises a truss beam wall (3), a surface sealing layer of a bag-shaped structure, and ...
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WO/2019/117087A1 |
The present invention simplifies a water-stopping operation of a joint between segment rings and shortens the work time for said operation. A water stop member (1) used in a joint between segment rings of a shield segment, the water stop...
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WO/2019/113622A1 |
The disclosure relates to shotcreting, and a means for ensuring that a layer of shotcrete has achieved a requisite thickness. In one form, there is provided a shotcrete depth indicator of low cost construction, wherein in use the shotcre...
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WO/2019/109700A1 |
An anchor bolting method for enhancing roof stability using reinforced roof and sides of a coal roadway comprises: dividing a roof (2) of a roadway (1) into different regions; analyzing rock core information of the respective regions to ...
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WO/2019/109701A1 |
An anchoring method employing multiple anchor bolts to simultaneously inject specific quantities of grout comprises the following steps: performing on-site measurement on rocks surrounding a roadway to obtain a grout penetration radius, ...
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WO/2019/109111A1 |
The invention provides a split set type composite rockbolt (10) which has a slot (22) extending from a chamfered tip (24) of a tubular body portion (26) of the rockbolt (10) and through a neck portion (28) partway to a collar portion (18...
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WO/2019/107649A1 |
The present invention relates to a uniform heating system for curing concrete using microwaves and a construction method of a concrete structure using the same. More specifically, provided are a uniform heating system for curing concrete...
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WO/2019/108119A1 |
A rod feeding device (1) is described herein, which comprises a frame (3) as well as a rotatable magazine (5) arranged on the frame (3) and arranged with a plurality of grooves (7) around its periphery in which rods may be placed. The ro...
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WO/2019/103630A1 |
The invention relates to an autonomous drilling machine for the construction of service shafts and open shafts, also known as slots, especially designed to improve efficiency in mining and civil engineering, as well as significantly redu...
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WO/2019/104359A1 |
The invention provides a washer (10, 10A) made of a composite material which has a plate-like body (12) with a first surface (14) and a second surface (16), a perimeter edge, a central aperture (20) through the body and a yielding zone (...
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WO/2019/101484A1 |
A self-aligning tool guide (1) has a mounting (5) for fixing a hand-held machine tool (6) for machining a ceiling (3), a lifting mechanism (7), and a self-balancing chassis (8). The mounting (5) is mounted on the lifting mechanism (7), a...
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WO/2019/101554A1 |
A rock bolt and meshing assembly for installation of meshing sheet against a surface of rock strata. The rock bolt comprises an adapter having a first portion connectable to a trailing end of an elongate shaft of the rock bolt and means ...
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WO/2019/101483A1 |
A self-aligning tool guide (1) has a mounting (5) for fixing a hand-held machine tool (6), a lifting mechanism (7), and a self-balancing chassis (8). The mounting (5) is mounted on the lifting mechanism (7), and a propulsion unit (24) is...
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WO/2019/101478A1 |
A self-aligning tool guide (1) has a mounting (5) for fixing a hand-held machine tool (6) for machining a ceiling (3), a lifting mechanism (7), and a self-balancing chassis (8). The mounting (5) is mounted on the lifting mechanism (7), a...
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WO/2019/101482A1 |
A self-aligning tool guide (1) has a mounting (5) for fixing a hand-held machine tool (6), a lifting mechanism (7), and a self-balancing chassis (8). The mounting (5), which can be lifted and lowered parallel to a lifting axis (25) by me...
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WO/2019/101481A1 |
A tool guide (1) has a mounting (5), a lifting mechanism (7), and a chassis (8). The mounting (5) is designed to fix a hand-held machine tool (6) and is mounted on the lifting mechanism (7), and the lifting mechanism (7) has a propulsion...
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WO/2019/095006A1 |
A rock bolt (10) to be received in a drilled hole comprising a threaded shaft (12) and a sleeve (14) into which the shaft (12) is received. A plurality of openings (38) are provided along the length of the sleeve (14) and clamping assemb...
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WO/2019/094723A1 |
A pumpable resin system for installation of mine bolts includes a resin injection cylinder comprising a resin chamber and a resin hydraulic cylinder, a catalyst injection cylinder including a catalyst chamber and a catalyst hydraulic cyl...
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WO/2019/091981A1 |
The present invention relates to a method for inspecting and/or guiding excavation (E) operations, comprising the following steps: a) (i) georeferencing a first acquisition device (10) for acquiring the relief in the excavation, in a gen...
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WO/2019/085424A1 |
A smart grouting method for geologically complex regions, in which the coefficient of permeability of grouting holes in a region is obtained from water permeability tests, an optimal grout concentration for each grouting hole is determin...
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WO/2019/085819A1 |
A process for supporting an anchor bolt and an anchor cable on a successive mining working face. A four-arm top anchor bolt drill carriage serves as a front carriage, a six-arm side anchor bolt and top anchor cable drill carriage serves ...
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WO/2019/088921A1 |
The present invention relates to a method and system for reinforcing a portion of the excavated ground that provides in-situ support to freshly excavated ground immediately during tunnel boring machine (TBM) excavations. The present inve...
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WO/2019/088925A1 |
Disclosed herein is a process of forming an inorganic water barrier layer on top of a porous substrate by means of microbially induced calcium carbonate or calcite precipitation (MICP), the process comprising the steps of: providing a po...
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WO/2019/083430A1 |
A method (200) for ensuring the quality of a multi-component mixture comprising at last two components, in a system (100) for rock reinforcement is described herein. The system (100) comprises a first (1 ) and a second (3) channel for a ...
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WO/2019/076057A1 |
Provided is a box-culvert relay push system (100) having a push apparatus and a box-culvert push block connection structure. The box-culvert relay push system (100) is arranged to push a box culvert (20) into a tunnel (200), and comprise...
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WO/2019/076053A1 |
An interjack station-based box culvert jacking system (100) and a method for using same. The interjack station-based box culvert jacking system (100) is provided to jack box culverts (20) into a tunnel (200), comprises an operating platf...
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WO/2019/076056A1 |
A box culvert relay jacking system (100) having a movable mechanism (60). The box culvert relay jacking system (100) is configured to jack box culverts ((20) into a tunnel (200)., The system (100) comprises a working platform (10) provid...
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WO/2019/076055A1 |
An interjack station-based box culvert jacking system (100) having a jacking frame assembly (32). The interjack station-based box culvert jacking system (100) is provided to jack box culverts (20) into a tunnel (200), and comprises an op...
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WO/2019/070182A1 |
The present disclosure relates to a sealing device (10') adapted to be positioned within a domed bearing plate and mounted around a portion of a rock bolt protruding from a surface, the sealing device comprising: -a body consisting of a ...
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WO/2019/068787A1 |
Holding system for a twist nail, comprising a movable ball body (2) which receives within it a twist nail (15) having a thread (16) and which is arranged in an opening (22) of a holding plate (9, 10, 10a, 10b, 10c), wherein the ball body...
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WO/2019/062283A1 |
A method for determining the feasibility of non-pillar gob-side roof-caving roadway formation, comprising: step I, determining an immediate roof thickness MZ and a burial depth W, and calculating a roadway gob-side lateral hanging roof l...
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WO/2019/056794A1 |
A method for constructing a cavity behind a tunnel lining comprises the following steps: drilling a pouring hole in a surface of a lining; mounting a pouring pipe inside the pouring hole; pouring foam concrete into a cavity behind the li...
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WO/2019/059776A1 |
The present invention disclose a tunnel profile element (10, 20A, 20) comprising a lightweight body constituted by foam glass panels sprayed with unbroken polyurea layer providing a fire resistant coating, and which is providing increase...
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WO/2019/053653A1 |
The invention relates to a sleeveless energy absorbing rock bolt. A first end of the rock bolt is configured to facilitate the mixing of an anchoring composition and/or anchoring the rock bolt in the rock. The rock bolt comprises mangane...
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WO/2019/052331A1 |
Disclosed is a self-drilling differential grouting combined bolt, which is composed of a drill (1), a grouting pipe (2), a spindle (3), a bolt head mechanism and a bolt tail mechanism, wherein the drill (1) is connected to a front end of...
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WO/2019/056025A1 |
An expansion assembly for a rock bolt (40) which includes: an expansion shell (12) which extends between a distal end and a proximal end, the shell comprising a joining formation (24) and a plurality of expansion leaves (22), each having...
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WO/2019/052594A1 |
The invention relates to a conveying and transport system for tunnel constructions, having a twin-rail overhead track system which comprises a roof-mounted track (1) consisting of two lines (2, 3) of rails (4) arranged parallel alongside...
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