US3906733A - Device for shielding ground workings with means for controlling the dust - Google Patents
Device for shielding ground workings with means for controlling the dust Download PDFInfo
- Publication number
- US3906733A US3906733A US517592A US51759274A US3906733A US 3906733 A US3906733 A US 3906733A US 517592 A US517592 A US 517592A US 51759274 A US51759274 A US 51759274A US 3906733 A US3906733 A US 3906733A
- Authority
- US
- United States
- Prior art keywords
- side wall
- shield
- liquid
- adjacent
- shields
- 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 - Lifetime
Links
- 239000000428 dust Substances 0.000 title claims abstract description 25
- 230000003245 working effect Effects 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 45
- 238000007789 sealing Methods 0.000 claims description 9
- 239000003245 coal Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 abstract description 5
- 238000010276 construction Methods 0.000 description 7
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical group C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/03—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support
-
- 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
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
Definitions
- a device for reducing dust in workings such as underground workings which are supported by shields comprises a plurality of shields each having a top and a side wall on at least one side disposed alongside and spaced from the next adjacent shield side wall.
- a liquid conduit is carried by the sheild adjacent the top of its side wall and it is provided with a plurality of openings or discharge nozzles along its length in order to direct a dust settling liquid or spray downwardly adjacent the side wall.
- An elastic seal extends outwardly from the bottom of the side wall and applies against a similar seal of the next adjacent shield.
- the two shields together define a runoff gutter for the liquid employed to settle the dust.
- This invention relates in general to the construction of shields and in particular to a new and useful device for shielding ground workings or underground workings which includes a plurality of shields arranged in spaced side by side relationship with side walls having an outwardly extending seal adjacent the lower end thereof and carrying a conduit it its top which sprays liquid in the space between the shields in order to settle the dust therebetween and to cause it to run off along the seals.
- the present invention has particular application for underground workings particularly in coal mines where shield supports are required. While using a shield support the free face between the hanging wall, the footwall, the coal face and the workedout area is smaller than in a Iongwall. Since the air volume required for the workings is independent of the cross section of the operational space, the air velocity in the shield supported workings is higher than in a longwall. For this reason it is difficult to control the dust in said shield supported workings.
- a shield device in which the dust is trapped directly at the location of its occurrence and it is drained away as mud.
- this draining is provided through the gap between two adjacent shields and the mud is evacuated to a place which is not required for the conveying and for the working mechanisms.
- At least one side of the shield carries a liquid conduit adjacent the upper edge thereof which extends along substantially the entire length of the shield and is provided with openings for the liquid which are turned to direct a liquid spray or stream on at least one side of the shield so that it is directed preferably along the lower edge of the side plate.
- An elastic seal is mounted to project outwardly from the bottom of the side plate and it is formed with a U-shaped configuration having a central portion which projects against a similar seal carried on the next adjacent plate so as to form a runoff gutter on the tops of the seals which extend along the bottom edge of the plate.
- the elastic sealing preferably has a substantially U-shaped cross section and it includes legs of unequal length with the longer leg being secured to the underside or adjacent the lower edge of the side wall of the shield.
- the sealing is advantageously connected to the shield by resilient members.
- the invention provides that the distance between the outer edge of the elastic sealing and the plate is larger than the maximum possible distance between the side plates of two adjacent shield units.
- the liquid conduit for the shield may be designed as a pipe which is welded to the shield and thus it serves also as a bearing member. Such a pipe may be entirely or partly formed by the structural elements of the shield or a separate liquid conduit is mounted separately on the shield or at a spaced location therefrom or connected thereto by a resilient support member.
- an object of the invention to provide an improved shield for underground workings which includes a top wall and a side wall with a conduit for liquid extending along the top of the side wall and having openings directed downwardly into the space between the side wall and the side wall of the next adjacent shield and wherein the shield is provided with a lower edge having an outwardly extending sealing member which engages against the sealing member of the next adjacent shield so as to form a runoff gutter therewith extending along the length of the shield adjacent the bottom edge of the side wall.
- a further object of the invention is to provide a shield construction which is simple in design, rugged in construction and economical to manufacture.
- FIG. 1 is a side elevational view of a shield constructed in accordance with the invention
- FIG. 2 is a sectional view of the shield taken along the line IIII of FIG. 1;
- FIG. 3 is an enlarged partial sectional view showing the lower edge of a shield side plate wall
- FIG. 4 is a view similar to FIG. 3 showing a pair of shields placed in side by side relationship;
- FIG. 5 is a view similar to FIG. 4 showing an offset ting of one shield in respect to the other;
- FIG. 6 is an enlarged sectional view of an upper edge of a shield showing another embodiment of conduit construction.
- FIG. 7 is a partial sectional view similar to FIG. 2 of the upper corner of the shield of another embodiment of the invention.
- FIGS. 1 to 5 comprises a shield generally designated 1 which is adapted to be used in underground coal mining operations and which includes an upper end la which is adapted to be secured on a pivot element 50 which is secured for example on a structure such as a support beam 52.
- the shield l includes at least a portion of generally rectangular configuration with a top wall 2 and side walls 54 and 56 which extend downwardly from each side of the top wall 2.
- a liquid conduit designed as a pipe 3 is welded to the shield adjacent the juncture between the top wall 2 and the side walls 54 and 56 and it extends along a substantial length of the respective side walls.
- the pipe is provided with openings 4 which are oriented to direct liquid downwardly in a stream or spray exterior of the associated side walls 54 or 56 and between the side walls of adjacent shields l and 1'.
- each seal member 5 is secured to the lower end of each side wall 54 and 56 for example to bottom plates 8 which extend substantially parallel to the top walls 2.
- Each seal member 5 has a substantially U- shaped cross section which includes a longer leg 7 which is secured to the bottom plate 8 and a shorter leg 70 which extends outwardly from the plate.
- the seal 5 includes a rounded top or intermediate portion 6 which is adapted to be positioned against the next adjacent side wall 54 or 56 of the next adjacent shield 1' with sufficient pressure so as to flatten it against the associated wall as shown in the arrangement of FIG. 5 or to flatten it against the associated sealing member 5' of the next adjacent shield l as shown in FIG. 4.
- Each shield 5 or 5 is advantageously secured in position by a Clamping plate 58 which may be bolted to the bottom plate 8.
- the distance a from the outer surface of the side plate 56 to the apex of the intermediate portion 6 is larger than the largest possible distance b between two adjacent side plates as shown in FIGS. 3 and 4 respectively.
- the dust 60 shown in FIG. 4 in the interspace between the plates 56 and S4 of adjacent shields l and l is trapped by the water jets or streams discharged through the openings 4 of the pipes 3 and that the dust becomes entrained downwardly in the liquid which is subsequently drained by running off along the top surfaces of the seal members 5.
- FIG. 4 shows an arrangement where adjacent shields operate on substantially the same level and are not offset during the time in which they are guided along the working face.
- the seal members 5 and 5' bear against each other and the top surfaces thereof form a runoff gutter for the dust and liquid slurry.
- the shields are moved so that they are offset vertically as shown in H6. 5 the dust 60 collects only about the seal member 5 which bears against the plate 54'.
- a shield generally designated 1" includes a top wall 10 and a side wall 62.
- a plate member 11 is welded to each of the plates 10 and 62 and forms a conduit or passage 31 for liquid which may be discharged through one or more openings 41 defined along the side wall 62.
- a shield generally designated 1 includes a top wall 70 and a side wall 21 which are spaced inwardly from respective top plates 72 and side wall plates 74 which are mounted by one or more resilient mountings 9 on the shield 1'.
- a liquid conduit 32 is carried by the plates 72 and 74 so that it is at a spaced location outwardly from the wall 21 of the shield.
- Resilient mountings 9 a first spring cylinder 90 on the plate 21 and a second spring cylinder 9b on a plate 74.
- Spring means such as a coil spring 34 is arranged within the cylinders and 9b and keeps the plate 74 at a desired spacing. This embodiment is particularly advantageous in cases where larger distances must be provided between the field units during the advance.
- a device for reducing dust in workings such as underground coal mines wherein the walls are supported by shields comprising a shield having a top and a side wall on at least one side, a liquid conduit carried by said shield adjacent the top of its side wall and connected to a liquid supply and having a plurality of openings for the liquid along its length oriented to discharge liquid downwardly adjacent said side wall, and an elastic seal member extending outwardly from the bottom of said side wall and defining a runoff gutter for the liquid and entrained dust extending along said wall.
- said seal member has a substantially U-shaped cross section and includes a long leg portion connected to the lower end of said side wall, an intermediate web portion and a short leg portion spaced outwardly from the bottom of said short leg portion.
- said shield includes a bottom wall extending inwardly from said side wall and elastic means securing said seal member to said bottom wall.
- a device for reducing dust in workings which are supported by shields comprising a plurality of shields each having a top wall and a side wall on at least one side of said top wall, a liquid conduit extending along said side wall adjacent the top thereof and connected to a liquid supply and having a plurality of openings for the discharge of the liquid along its length oriented to discharge liquid downwardly adjacent said side wall, and an elastic seal member extending outwardly from the bottom of and along said side wall and applying against the next adjacent shield and defining a runoff gutter for the liquid between said shields, said seal member comprisi-ng a U-shaped member having a first leg portion connected to the bottom of said shield, an intermediate portion and a second leg portion spaced outwardly from said first leg portion, said intermediate portion extending outwardly beyond the edge of said side wall by a distance which is greater than the distance between adjacent side walls of said adjacent shields.
- liquid conduit comprises a pipe firmly secured to said shield.
- a device including a resilient mounting supporting said liquid conduit on said shield.
- a device including a bottom plate secured to the lower end of said side wall, said sealing member being clamped to said bottom plate,
- said shield having a side wall on each side.
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)
- Lining And Supports For Tunnels (AREA)
- Sealing Devices (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732357533 DE2357533B2 (de) | 1973-11-17 | 1973-11-17 | Vorrichtung zur staubbekaempfung bei einem schildausbau |
Publications (1)
Publication Number | Publication Date |
---|---|
US3906733A true US3906733A (en) | 1975-09-23 |
Family
ID=5898421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US517592A Expired - Lifetime US3906733A (en) | 1973-11-17 | 1974-10-24 | Device for shielding ground workings with means for controlling the dust |
Country Status (5)
Country | Link |
---|---|
US (1) | US3906733A (ja) |
JP (1) | JPS542884B2 (ja) |
CA (1) | CA1010397A (ja) |
DE (1) | DE2357533B2 (ja) |
HU (1) | HU173378B (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4064701A (en) * | 1975-10-16 | 1977-12-27 | Herman Hemscheidt Maschinenfabrik | Hydraulic shield assembly |
US4274765A (en) * | 1977-11-19 | 1981-06-23 | Winster Engineering Limited | Mining equipment |
US4552487A (en) * | 1980-03-19 | 1985-11-12 | Gewerkschaft Eisenhutte Westfalia | Mine roof support unit having dust suppression means |
US4692061A (en) * | 1984-03-31 | 1987-09-08 | Wintershall Ag | Process for dumping of particulate solid waste materials in underground salt enclosed cavitives |
US4786296A (en) * | 1987-06-23 | 1988-11-22 | Griffis Steven C | Apparatus for use in asbestos removal |
US4826514A (en) * | 1987-06-23 | 1989-05-02 | Griffis Steven C | Apparatus for dampening hazardous material |
US5368433A (en) * | 1993-07-14 | 1994-11-29 | Environmental Procedures, Inc. | Drum dumper |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2721653C2 (de) * | 1977-05-13 | 1985-05-15 | Ruhrkohle Ag, 4300 Essen | Vorrichtung für die Wetterkühlung im Untertagebergbau mit an Ausbaueinheiten anbringbaren Kühlmittelträgern |
FR2442960A1 (fr) * | 1978-11-30 | 1980-06-27 | Boldry Bernard | Dispositif de suppression des poussieres par pulverisation d'eau dans un tambour rotatif |
CN102182858B (zh) * | 2011-04-25 | 2014-02-19 | 淮南润成科技股份有限公司 | 矿用一体化电磁阀及其控制方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1620142A (en) * | 1925-04-24 | 1927-03-08 | Albert T Walraven | Fire extinguisher |
US2963284A (en) * | 1957-02-21 | 1960-12-06 | Swift & Co | Apparatus for producing a fine spray, fog, or mist |
-
1973
- 1973-11-17 DE DE19732357533 patent/DE2357533B2/de not_active Ceased
-
1974
- 1974-09-09 HU HU74RE562A patent/HU173378B/hu unknown
- 1974-10-24 US US517592A patent/US3906733A/en not_active Expired - Lifetime
- 1974-10-29 CA CA212,515A patent/CA1010397A/en not_active Expired
- 1974-11-15 JP JP13122674A patent/JPS542884B2/ja not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1620142A (en) * | 1925-04-24 | 1927-03-08 | Albert T Walraven | Fire extinguisher |
US2963284A (en) * | 1957-02-21 | 1960-12-06 | Swift & Co | Apparatus for producing a fine spray, fog, or mist |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4064701A (en) * | 1975-10-16 | 1977-12-27 | Herman Hemscheidt Maschinenfabrik | Hydraulic shield assembly |
US4274765A (en) * | 1977-11-19 | 1981-06-23 | Winster Engineering Limited | Mining equipment |
US4552487A (en) * | 1980-03-19 | 1985-11-12 | Gewerkschaft Eisenhutte Westfalia | Mine roof support unit having dust suppression means |
US4692061A (en) * | 1984-03-31 | 1987-09-08 | Wintershall Ag | Process for dumping of particulate solid waste materials in underground salt enclosed cavitives |
US4786296A (en) * | 1987-06-23 | 1988-11-22 | Griffis Steven C | Apparatus for use in asbestos removal |
US4826514A (en) * | 1987-06-23 | 1989-05-02 | Griffis Steven C | Apparatus for dampening hazardous material |
US5368433A (en) * | 1993-07-14 | 1994-11-29 | Environmental Procedures, Inc. | Drum dumper |
Also Published As
Publication number | Publication date |
---|---|
HU173378B (hu) | 1979-04-28 |
DE2357533A1 (de) | 1975-05-22 |
JPS542884B2 (ja) | 1979-02-15 |
DE2357533B2 (de) | 1976-06-24 |
AU7482474A (en) | 1976-05-06 |
JPS5080902A (ja) | 1975-07-01 |
CA1010397A (en) | 1977-05-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3906733A (en) | Device for shielding ground workings with means for controlling the dust | |
GB1526663A (en) | Vibratory screening apparatus for finely divided material | |
US5006228A (en) | Mounting system for increasing the wear life of a vibrating screen panel | |
RU2625132C1 (ru) | Фильтрационная перемычка | |
CN216111245U (zh) | 一种水利工程施工用排水装置 | |
CN214741331U (zh) | 一种煤矿的清路掘进设备 | |
ES8202092A1 (es) | Perfeccionamientos en dispositivos para combatir el polvo enuna galeria | |
CN208565806U (zh) | 一种建筑施工工地用废水排放管道 | |
CN208734878U (zh) | 一种振动筛筛板支撑角钢的密封防护装置 | |
CN217632550U (zh) | 一种煤矿井下掘进抑尘器 | |
CN215695795U (zh) | 一种不锈钢冲孔减荷聚氨酯网格筛板 | |
CN216441047U (zh) | 一种用于防振动筛侧漏的新型筛网 | |
Wirch et al. | Shearer-mounted scrubbers, are they viable and cost-effective? | |
CN221032719U (zh) | 一种矿用采掘机喷雾降尘装置 | |
CN212688687U (zh) | 一种桥梁伸缩缝装置 | |
CN214499069U (zh) | 一种用于采矿工程的机电设备防尘装置 | |
CN217190908U (zh) | 一种煤矿用振动筛的振动筛盘装置 | |
CN221004280U (zh) | 一种穿塑壳同时回推防水栓装置 | |
CN214298393U (zh) | 一种抑尘导料槽 | |
CN215505714U (zh) | 一种用于煤矿地质工程的防治水装置 | |
CN211563643U (zh) | 一种振动筛筛网密封胶条 | |
CN213895504U (zh) | 一种矿区生态保护用污水处理装置 | |
CN217678888U (zh) | 一种堰坝分块混凝土变形缝止水结构 | |
CN214196377U (zh) | 一种煤矿作业通风装置 | |
CN221220545U (zh) | 一种皮带过风门防逆风装置 |