DE854486C - Rock dust barrier - Google Patents
Rock dust barrierInfo
- Publication number
- DE854486C DE854486C DEST2068A DEST002068A DE854486C DE 854486 C DE854486 C DE 854486C DE ST2068 A DEST2068 A DE ST2068A DE ST002068 A DEST002068 A DE ST002068A DE 854486 C DE854486 C DE 854486C
- Authority
- DE
- Germany
- Prior art keywords
- dust barrier
- rock dust
- sheets
- insulating
- rock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000428 dust Substances 0.000 title claims description 7
- 230000004888 barrier function Effects 0.000 title claims description 6
- 239000011435 rock Substances 0.000 title claims description 5
- 238000000576 coating method Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 239000012777 electrically insulating material Substances 0.000 claims 1
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/14—Fluid barriers or rock dusters made to work by, or at the same time as, shots or explosions
- E21F5/146—Rock dusters
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Electrostatic Separation (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
- Insulators (AREA)
Description
Gesteinsstaubsperre Gegenstand des Patents 8.49 683 ist eine Gesteinsstaubsperre, die aus gewellten Blechen besteht, die zwei nach unten gebogene, außerhalb liegende Muldenrinnen und eine nach oben gebogene, in der Mitte des Blechs liegende Sattelrinne aufweisen. Die Bleche sind in der Längsrichtung übereinanderschiebbar angeordnet und liegen entweder mit den Endkanten oder mit den Muldenrinnen auf einer Haltevorrichtung in labiler `'eise auf.Rock dust barrier The subject of patent 8.49 683 is a rock dust barrier, which consists of corrugated sheets, the two bent downwards, lying outside Trough channels and an upwardly curved saddle channel located in the middle of the sheet metal exhibit. The metal sheets are arranged such that they can be pushed one over the other in the longitudinal direction and lie either with the end edges or with the trough channels on a holding device in unstable ice.
Diese Bleche werden im allgemeinen aus etwa i bis 2 mm starken Feinblechen hergestellt und sind in dieser Form für die Sicherung der Grubenstrecken brauchbar. Nachteile können sich jedoch ergeben, wenn die Strecken von elektrischen Grubenbahnen befahren werden und infolgedessen mit freiliegenden Stromleitungen versehen sind. Um das Entstehen von Kurzschlüssen bei auftretenden Explosionen durch das Herabkippen der mit Gesteinsstaub beladenen Bleche der Staubsperren auf die Fahrdrahtleitungen zu vermeiden, hat es sich als zweckmäßig erwiesen, an Stelle der gewellten Bleche gleichartige Formkörper aus elektrisch nichtleitenden Materialien zu verwenden oder die gewellten Eisenbleche mit einem stromisolierenden Cberzug zu versehen. Beispielsweise hat sich die Aufbringung einer isolierenden Gummischicht als vorteilhaft erwiesen, da durch Heißvulkanisation des Gummiüberzugs auch eine ausreichende Stoßfestigkeit der Isolierschicht erzielt wird. An Stelle eines Überzugs auf Kautschukbasis können auch elektrisch isolierende Überzüge aus Kunststoffen, wie z. B. Polyvinyl-, Polyacryl- und Polyäthylenverbindungen, gegebenenfalls in Kombination mit geeigneten Weichmachern, verwendet werden. Gegebenenfalls können die Bleche auch mit einem isolierenden Lacküberzug versehen werden. Damit ist auch in Strecken, die mit blanken Stromleitungsdrähten ausgerüstet sind, eine völlige Betriebssicherheit erzielt.These sheets are generally made from about 1 to 2 mm thick thin sheets manufactured and can be used in this form for securing the mine sections. Disadvantages can arise, however, when the routes of electric mine railways are driven on and as a result are exposed to power lines. About the occurrence of short circuits in the event of explosions due to tilting the metal sheets of the dust barriers loaded with rock dust onto the contact wire lines to avoid, it has proven to be useful in place of the corrugated sheets to use similar shaped bodies made of electrically non-conductive materials or to provide the corrugated iron sheets with a current-insulating coating. For example has been raising an insulating rubber layer is advantageous proven, as the hot vulcanization of the rubber coating also provides sufficient shock resistance the insulating layer is achieved. Instead of a rubber-based coating, you can also electrically insulating coatings made of plastics, such as. B. polyvinyl, polyacrylic and polyethylene compounds, if necessary in combination with suitable plasticizers, be used. If necessary, the sheets can also be coated with an insulating varnish be provided. This is also in routes with bare power line wires are equipped, a complete operational safety is achieved.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST2068A DE854486C (en) | 1950-09-01 | 1950-09-01 | Rock dust barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST2068A DE854486C (en) | 1950-09-01 | 1950-09-01 | Rock dust barrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE854486C true DE854486C (en) | 1952-11-04 |
Family
ID=7452740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEST2068A Expired DE854486C (en) | 1950-09-01 | 1950-09-01 | Rock dust barrier |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE854486C (en) |
-
1950
- 1950-09-01 DE DEST2068A patent/DE854486C/en not_active Expired
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