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<table border="0" cellpadding="3" cellspacing="1" width="100%" class="forumline"> <tr> <th class="thCornerL" width="22%">Autor</th> <th class="thCornerR">Wiadomość</th> </tr> <tr> <td width="22%" align="left" valign="top" class="row1"><span class="name"><a name=""></a><b>defgf10aj</b></span></td> <td class="row1" valign="top"><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="100%"><img src="http://picsrv.fora.pl/Elveron/images/icon_minipost.gif" width="12" height="9" alt="Post" title="Post" border="0" /><span class="postdetails">Wysłany: Czw 16:25, 04 Lis 2010<span class="gen"> </span> Temat postu: Iron ore mining methods Jinshandian My _1475</span></td> </tr> <tr> <td colspan="2"><hr /></td> </tr> <tr> <td colspan="2"><span class="postbody">Iron ore mining methods Jinshandian My Opinion <br /> <br /> <br />Problem, in general, play a large hole (80 ~】 OOmm) ~ JI] methods to solve large array pitch, the other in order to reduce vibration, using the same row of sub-millisecond blasting approach. General I Paibao hole sub-3 initiation. In order to reduce the mining approach in the mining process pressure, strengthen the management of ground pressure. Change the mining of ore block as a unit order to approach the recovery order for the unit, as done with the level of Qi mining approach was the first treatment or slash back well taken, to ensure that the maximum lag adjacent mining approach adopted from the back not more than IOm. Segmentation height increase later. The appropriate step should be to increase recovery, or when a mine waste rock face early mixed, resulting in dilution of ore extraction step, but increased. Mine is currently mining equipment used in the C-3O bucket loading machine insertion depth is small, mining ore loss will increase when the front, so in height to improve the sub-set must update the ore pottery, using a large bucket scraping the insertion depth machine out of mine. 4, with the use of broken ore in the open cutting slots in a particular location, such as the mining area of the middle part I (I2 between exploration and prospecting line to Id) in the same block as ore in the ore and fine ore junction there is a wide 2 - 3m of the compressive fracture zone, laneway is difficult to pass. This situation should be used for this fracture zone is necessary to develop cutting slot, two-way from the middle to drive back down mining. To this end, the corresponding heading in the hanging wall ore chute, and sub-drift and other projects. Fourth, the conclusion of a mine, particularly as such large Jinshandian iron ore mines. Not necessarily the mining side 2 with a single rule-base design and construction of Mine No. 5 of 1992 Act. Ore body should be based on conditions in different locations using different mining methods. However, a mine must be based in a mining method for production, or both from the technical or production management are difficult to achieve, production development plans difficult to achieve. Jinshandian iron from l979 the end of the transfer of large infrastructure projects in the production wells has been spent l0 years to test a variety of mining methods, but Sublevel caving method has always been dominant in production, engineering and technical personnel responsible for annual plan and production management staff in the years of practice until the workers have accumulated a wealth of experience, can be more proficient in this mining method. The key issue now is the fine ore in the tunnel excavation and support issues, if we can optimize the structural parameters of the stope, sublevel height increased, the appropriate question to increase from the approach to minimize the amount of pulse roadway projects in order to concentrate on the mining roadway support, and no pillar sublevel caving in Jinshandian solid iron or promising that the paper should Jinshandian Iron Sublevel caving method for production-based. Appropriate units in the respective block caving mining lots available block caving mine leakage from the pulp mill Analysis and Countermeasures our own design and manufacture of the first maximum size 7.5m × 2.8m since the end of 1984, the mill invested in Mine production run, the end of 1991 a total of 10.09 million t of ore is about, because from the grinding mill without grinding media, feed block degree, low energy consumption and economic benefits of better integrated platform. However, during operation of the mill were also found there are some structural collapse, which liner bolts loose. Lo Kwai-L is the leakage of pulp mill over the years of normal operation of a difficult problem. We have taken time to time to stop to check, tighten a bolt approach, and the well is to take a number of leak-proof measures, but has failed to solve the problem of leakage of slurry. Drain bags produced mainly two solid cable: ① lining the surface without finishing, rough, not enough to kiss the contact with the shell sets; ② mill diameter, too, lining heavy liner during operation will have great centrifugal force, leaving the slide on the lead lining, causing leakage of plasma Lo Kwai loose. Because of this lack of Mill Road, the first quarter of 1992, we wear on the mill shell for the whole week replacement, drew large foreign embarrassed Machine Packing village board experience in the simplified feed end of the village board and lining plate under a layer of cerium 3ram thick rubber liner, the liner and shell to improve the contact condition, and to avoid the operation of the sliding process of lining. After the mill shell replacement parts since May 9, 1992 put into operation, has yet to be found in the feed tube and the end of bolts loosening and leakage of plasma liner. (Dexing Copper Wang Zunzhen) two successful high-rise building design competition in three subordinates and Design Institute, because of Changsha Research Institute of Ferrous Metallurgy Design Mine Design unique architectural style, layout, management and functional units are units of young tender pay attention, the two high-rise building design one fell swoop. Among them, four-star hotel in Changsha Thailand hotel, 28 floors and 2 underground floors ground floor area of about 6OOOOm: German city of Guangzhou hotels often Samsung satin hotel, on the ground floor of 22 t 1 basement floor area of about 25000m. (Chan-Mount) <br /> More articles related to topics： <br /> <br /> <br /> <a href="http://www.rrsport.co.uk/forum/post279485.html#279485" target="_blank" class="postlink">Introduction to AutoCAD _827 secondary developmen</a> <br /> <br /> <a href="http://www.rrsport.co.uk/forum/post279483.html#279483" target="_blank" class="postlink">Introduction of the Bougainville copper mine reve</a> <br /> <br /> <a href="http://www.krainy.fora.pl/cyrk,27/iron-ore-mine-built-a-new-model-_1407-review,4475.html#32863" target="_blank" class="postlink">Iron ore mine built a new model _1407 Review</a></span></td> </tr> </table></td> </tr> <tr> <td colspan="2" height="1" class="spaceRow"><img src="http://picsrv.fora.pl/Elveron/images/spacer.gif" alt="" width="1" height="1" /></td> </tr> </table>
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