mining method造句怎么写

Shrinkage mining method is China's earliest use and widely applied methods of mining, is a strong adaptability and extreme flexibility mining method.

The adaption of mining method is the similarity between the mining conditions of designed mine and adaption capacity.

To control the surface movement caused by mining, the backfill mining method was adopted for underground mining in Sijiaying Changyu iron mine.

According to the condition of ore body, selected mining method and proportion of each mining method, and through calculation, the mining loss rate is 12% and the impoverishment rate is 15%.

Distribution structure and parameter determination of medium-length holes in stage room mining method

Improvement of mining method for the orebody of gentle dip and medium thickness

Application of short wall fully caving coal mining method in Shendong coal mine area

However, for the average user, clustering can be the most useful data mining method you can use.

The scientific mining method of steep and close seam is always the difficult problem in Urumchi diggings.

Through the detail introduction on optimization of raining method in Shandong Wangcun Bauxite Mine, this paper puts forward a new mining method——longwall caving with artificial roof pillar.

The paper studied the gateway layout, the sectional top coal height and the coal mining technology of the coal mining method. Then the gateway and pillar top coal caving technology was developed.

Theoretical analysis shows that this paper to protect the privacy of association rule mining method has a very good privacy and efficient.

Small coal mine accounts for 90% in west China, therefore the policy of the safe production must be carried out for regulating mining method.

This paper introduces the results of sublevel open-stoping method and improving measures in Piaotang Tungsten Mine and makes a discussion about the mining method to the string thick-bedded ore body.

The hanging wall ore of the open-pit is one of important projects in transition from open pit to underground in Daye iron mine, and the shallow hole shrinkage mining method is adopted in the project.

This paper introduced emphatically to mining method for the ore-body of gentle dip and medium thickness under the condition of medium or poor stableness of country rocks in upper wall.

artificial-support mining method

Study on mining method for the mining of gentle dip orebody of fracture zone type

Sub-level caving is an efficient and safe mining method.

The article has some meanings in preventing desolate and boundlessization by using protection water mining method in Shanbei mining area.

During the experimental study on mining method in Huidong Lead-Zinc Mine, the selection of mining method is optimized through the approach of fuzzy mathematics.

Probing into the choose of modern mining method and management model;

With the development of mining industry, we now face how to mine under residential areas, strip mining method is a better saturation .

This method can improve the ore extraction rate and reduce the ore dilution rate and has been found to be a rational mining method for the mine.

Caving method is a high efficiency mining method widely used in underground metal mines. While it is a characteristic of the method that the loss rate and dilution rate is high.

However it suffers from the drawback of being low in extraction rate, which constitutes a crucial factor affecting the economic result of this mining method.

In accordance with the orebody shapes of Dongdashan iron mine and the adopted mining method, the ways of design and optimization for medium and deep caving parameters were given.

self-support mining method

The actual application of the irregular mining method "tree branch form" mining method in the coal pipe is introduced.

The main methods of building railway tunnels are mining method, shield method, immersed method and cutting and covering method, most of which are expatiated in aforementioned passages.

The upward horizontal slice stoping and filling without intervening pillar is the main mining method in Huangshaping Pb-Zn Mine.

For the gently inclined and extremely-thin vein, the mining methods including breasting method, waste-lifting stoping, resue stoping, long walling were usually adopted.

an underground mining method

Numerical optimization of the mining method for the deep level ore body mining of Xiangxi Gold Mine

With different construction method, (from Chapter 1 to Chapter 3), they are immersed tunnel, underwater shield tunnel and the underwater tunnel by using mining method respectively.

Application of mechanized cemented filling mining method in Fujia mine

In the final chapter, we mine stock trading data using time series method, find out the model and outliers in the data and, at last, we show the more exact forecasting model and outlier mining method.

Application of mechanized panel slicing backfilling mining method in Jilongshan gold mine