1.In this article the author point out the problem of ore clinging on the bottom of the car in nonferrous mine,depicted and analyzed in detail the main technical parameters,work principle,structure and put out the method to solve the harden bottom problem.
2.Application of caving mining technology with bottom under condition of flat dipping mid-thick body and unstable rock caused the most of trench and bottom drift, located in abutment , to be destroyed and low recovery in south area, Xishimen Iron Mine.
3.At the bottom end of a soaring market, an ethnic Chinese worker squats in a sluice to gather tin ore at a mine on Bangka Island off the Sumatran coast.
4.By means of similar simulation, lateral abutment pressure distribution and concentration degree which at the face of the upper coal, the distance between peak stress and coal surface, the influence circle of abutment pressure, and the transfer and weakening of concentrated pressure at the bottom side are analyzed on actual geology data in Pingdingshan 8th mine F15 and F(subscript 16-17).
5.In this paper,the authors draw the measures such as integrating the filling,dissimilar direction mine "from bottom to top",water stop by curtain grouting and fore-drainage in mining pit by analysis the actuality of subsidence hazard which is leaded by exploiting mine such as coal,aurum,iron,gypsum,steatite,and the development trend of the major digging.
6.Based on analyzing many algorithms, propose an efficient new algorithm for mining maximal frequent itemsets, CPMMFIA (mine maximal frequent itemsets algorithm based on condition pattern). This algorithm adopts the tactics from top to bottom, depth first, is very suitable for mining maximal frequent itemsets.
在分析了诸多算法的基础上,提出了一种高效的挖掘最大频繁项目集的新算法CPMMFIA(mine maximal frequent itemsets algorithm based on condition pattern),此算法采用自上而下的策略, 深度优先,非常适用于挖掘最大频繁模式。
7.Abstract: Analysis on core samples of 3 mine areas in Huaibei-Huainan Coalfield,Anhui Province shows that the Bottom Aquifers of thick Cenozoic formation in each area are different in gravel lithology and fine grain mineral composition.Morphology and size parameters manifest paleo-transpot-agents of the sediments high-energy,high-density and temporality.It is proved that the Bottom Aquifer was composed of diluvial-alluvial deposition and beds bearing gravel were mainly formed by rapid mud-rock flow in fault basins during Miocene epoch when the paleoclimate was warm and dry.
