| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | Methods of and Systems for Controlling Dust | US15343501 | 2016-11-04 | US20170130109A1 | 2017-05-11 | Kevin O'Brien; Nicholas S. Ergang; Sankar Bhattacharja; Andrew Brinkmeier; John C. Cranfill, III; Shaun P. Lendrum |
| Methods of and systems for dispensing dust suppressant are provided. The methods comprise forming an aqueous dispersion stream by delivering a surfactant composition to an aqueous liquid stream. The aqueous dispersion stream is mixed to form a dust suppressant. The dust suppressant is dispensed to a surface at a pressure sufficient to provide coverage of the surface. Surface tension of the dust suppressant is measured via a tensiometer, and the measurement is relayed to a controller. The forming of the aqueous dispersion stream is adjusted according to the measured surface tension relayed to the controller. The systems are configured to carry out one or more of the provided methods. | ||||||
| 22 | Arrangement for the admission of pressurized water to spray systems | US11565916 | 2006-12-01 | US07740421B2 | 2010-06-22 | Franz-Heinrich Suilmann; Michael Dettmers; Werner Reinelt; Sebastian M. Mundry |
| A water system for the admission of pressurized water to spray systems arranged on a powered support assembly for underground mining, having at least one spray system for plow or shearer track spraying and having at least one further spray system for goaf space spraying, canopy spraying and side spraying. A central water line feeds spray nozzles of the spray systems. To increase the operating reliability of the water system and thus of the powered support assembly, the control valves for the spray systems are accommodated in a spray valve block which is provided with a connection for the water line and which can be arranged on the powered support assembly as a unit separated from a hydraulic valve block. | ||||||
| 23 | Method of securing objects in passages and arrangement obtained thereby, particularly hose lines sealingly secured in the passages of coal mines for dust suppression | US503899 | 1974-09-09 | US4008576A | 1977-02-22 | Frank Meyer; Helmut Becker; Heinz Goretz |
| An object extends into a passage and defines a clearance space with the inner wall of the passage. A hardenable, foamable synthetic resin in flowable state is admitted into the clearance space. Upon hardening and foaming of the synthetic resin, the object is sealingly secured in the passage by the synthetic resin. In a preferred application, the passage is one provided in a coal mine and the object is a hose line for the purpose of suppressing dust. The synthetic resin is advantageously polyurethane including a polyhydroxyl component which contains a polyetherglycol having a hydroxyl number of 300 to 350 and a polyetherglycol having a hydroxyl number of 450 to 500. The polyetherglycol components respectively constitute 80 to 90 parts and 10 to 20 parts of the polyhydroxyl component. The polyhydroxyl component preferably includes a filler in an amount such that the weight of the latter at least equals that of the polyhydroxyl component. | ||||||
| 24 | Method of filling boreholes with viscous slurried explosives | US3791255D | 1972-01-10 | US3791255A | 1974-02-12 | FOX R; WILLIAMS D; WISINSKI A |
| A method of filling a void with a viscous product prepared by mixing two or more free flowing materials which method comprises firstly supplying separate streams of said free flowing material to the required position in a void and secondly mixing the separate streams at said required position to form the said viscous product in situ within said void. Apparatus used in the operation of the method is also described.
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| 25 | Stabilizing soils and accumulations of fine particulate material | US3708319D | 1970-04-03 | US3708319A | 1973-01-02 | NIMERICK K; EILERS L |
| SURFACES OF FINELY DIVIDED MATERIAL, E.G. SOILS, MINE TAILINGS, COAL DUST, LIME, OR THE LIKE, ARE STABILIZED AGAINST MOVEMENT CAUSED BY WIND AND/OR WATER BY APPLYING TO THE SURFACE A DRYING OIL WHICH MAY OPTIONALLY CONTAIN
AN ACCELERATOR TO THE DRYING PROCESS AND/OR WATER-SWELLABLE POLYMER. |
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| 26 | Mining method for methane drainage and rock conditioning | US3650564D | 1970-06-15 | US3650564A | 1972-03-21 | WILLIAMSON THOMAS N |
| Deep (long) parallel holes are drilled into a mine or tunnel face and explosive charges selectively exploded in some, but preferably not all, of such holes to fragment surrounding rock and join the holes. Methane migrates through the fractured formation to the hole which has not been exploded, or to a separately drilled drainage hole, and the unexploded or separate hole is first used to draw off explosive gases, where this is a problem. Then water is pumped through such hole or holes to saturate the formation to reduce dust suspension and also to cause additional gas migration. The fractured formation facilitates mechanical boring machines and reduces tool wear. The explosives are preferably provided at spaced intervals along a carrier tube with stiffeners to enable the tube to be pushed into the deep hole and with built-in electrical connections and stemming. The carrier for the explosives is preferably plastic and thus does not damage boring tools.
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