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1. They are both composed of swarms of sublevel things.
2. Non-pillar sublevel caving may be used in the mining of gently inclined medium thick orebody when footwall cutting technology is adopted.
3. Using hydraulic supports in heavy grade longwall sublevel caving, anti - topple and antiskid are the key factors.
4. The structural parameters in pillarless sublevel caving such as sublevel height, sublevel drive interval and ore caving interval have a great influence on the ore recovery.
5. The combination of sublevel stoping and shrinkage stoping is proposed. The inharmoniously demand of ore for concentrator can be met by modulating the mining process.
6. Sublevel caving without bottom pillar is the method of mining used at Huashugou Mine[Sentence dictionary], Jiuchun Iron and Steel Co.
7. In light of the characteristics of Nonpillar sublevel caving method, Probability integral method is used to predict mining subsidence and modified to improve predicting accuracy.
8. Sublevel caving method without sill pillar is adopted in the south section of Fengshan Copper Mine.
9. This paper introduced the test study of upward sublevel filling method in this mine.
10. By cloning the base style in sublevel, it copies the entire style.
11. In accordance with the geological conditon of 5's mineral lode of Hao chang mine field of Guyi Iron ore, raising the sublevel caving design scheme and some suggestions in using the mining method.
12. The paper is of important instructive importance to reduce loss and depletion by sublevel caving method without sill pillar.
13. After analyzing the movement law of ore drawing body, the basic parameters of sublevel mine in a gold mine are calculated by the experiment result of single model and surface model in a lab.
14. Take an underground copper mine as studying object, on which the surface has to be protected, the mining method of sublevel filling method with roof reconstructing is studied.
15. The paper discusses scientific properties of the mining method of caving top coal with light hydraulic support for sublevel caving between steeply inclined near coal seams.
16. Bodies and minds are not that different from one another. They are both composed of swarms of sublevel things.
17. Research shows that main cause of ore dilution in sublevel caving mining is tlnrational cut-off grade drawing. Non-dilution ore drawing is most ideal drawing mede.
18. It has great influence on the effect of dilution drawing, that the shape and size of ore remained mass at the tope dilution drawing in sublevel caving mining without bottom pillars.
19. In order to raise the mining productivity of stopes in Chinese mines, an experimental study was carried out on the high sublevel mining system in Shizhuyuan nonferrous metals mine.
20. Many years of production practice hade revealed some problems with the original sublevel caving system in the southern mineralized zone of Fengshan Copper Mine.
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