【正文】 交叉和重疊；有有毒氣體排放的工廠，宜布置在整個(gè)生產(chǎn)區(qū)的下風(fēng)向處；有爆破危險(xiǎn)的建筑物周?chē)?5米范圍內(nèi)不得有針葉林或竹林；按有關(guān)規(guī)定，凡A級(jí)建筑物均應(yīng)該設(shè)置防護(hù)土圍，但當(dāng)A級(jí)建筑物存藥量小于50千克時(shí)，可不設(shè)置防護(hù)土圍廠區(qū)內(nèi)運(yùn)輸危險(xiǎn)品的主要干道中心線距各建筑物的距離，應(yīng)符合下列規(guī)定：A級(jí)建筑物不宜小于20米；B級(jí)、D級(jí)建筑物不宜小于15米；有明火或散發(fā)火星地點(diǎn)不宜小于30米。一、工業(yè)廣場(chǎng)本礦的工業(yè)廣場(chǎng)位于露天礦境界東部，工業(yè)廣場(chǎng)內(nèi)的各種布置方式如下：機(jī)修區(qū)：包括卡車(chē)的保養(yǎng)間，礦修車(chē)間，卡車(chē)清洗車(chē)間和停車(chē)場(chǎng)地，布置在場(chǎng)地的北側(cè)，這樣據(jù)采場(chǎng)較近，便于汽車(chē)與各種設(shè)備的維修。倉(cāng)庫(kù)區(qū)：包括材料庫(kù)、備件、器材庫(kù)和油脂庫(kù)等，布置在西南側(cè)，距公路較近，便于運(yùn)輸裝卸。行政及生活區(qū)：辦公室、宿舍、住宅等，布置在北側(cè)，污染較輕。二、炸藥庫(kù)本礦火藥庫(kù)的建筑結(jié)構(gòu)為磚混結(jié)構(gòu)，外圍設(shè)置土堤防護(hù)，火藥庫(kù)位于工業(yè)場(chǎng)地的東部邊界。炸藥庫(kù)與采場(chǎng)由道路相通，運(yùn)輸方便。并且遠(yuǎn)離生活區(qū)，必須對(duì)其加強(qiáng)管理。第十三章 露天礦主要技術(shù)經(jīng)濟(jì)指標(biāo)開(kāi)采境界的主要尺寸最高標(biāo)高+1650，最低標(biāo)高+1470，采場(chǎng)最大長(zhǎng)度757米，最大寬399米，坑底最大長(zhǎng)度為356米，最大寬度25米。露天開(kāi)采境界內(nèi)礦巖量及其特性有用礦物的工業(yè)儲(chǔ)量505萬(wàn)m179。，廢石量1284萬(wàn)m179。～，礦石硬度系數(shù)：f=8－17巖石硬度系數(shù)：f=4－10。 t/m3， t/m3，礦石松散系數(shù)：，巖石松散系數(shù)：。露天礦生產(chǎn)能力見(jiàn)表121。表121 露天礦生產(chǎn)能力表類(lèi)別年月晝夜礦量（萬(wàn)噸）170巖量（萬(wàn)噸）429礦巖（萬(wàn)噸）599露天礦的服務(wù)年限為10年。達(dá)到設(shè)計(jì)生產(chǎn)能力期限為3年。主要設(shè)備為81臺(tái)，其中電鏟6臺(tái)，鑿巖機(jī)5臺(tái)，推土機(jī)3臺(tái)，自卸汽車(chē)64臺(tái)，鉆機(jī)3臺(tái)。參考文獻(xiàn)1 . 張富民. 采礦設(shè)計(jì)手冊(cè)2，北京：中國(guó)建筑工業(yè)出版社，1986，21～37，50～437.2 . 徐小荷. 采礦手冊(cè)2，北京：冶金工業(yè)出版社，1990，281～283.3 . 李寶祥. 采礦手冊(cè)3，北京：冶金工業(yè)出版社，1990，64～65，219～220.4 . 鐘良俊. 露天礦設(shè)備選型配套計(jì)算，北京：冶金工業(yè)出版社，1988，17～19，49～51，138～164，209～211，392～397.5 . 張世雄. 固體礦物資源開(kāi)發(fā)工程，武漢：武漢理工大學(xué)出版社，2005，65～82.6 . . MODERN APPLIED SCIENCE，Canadian：Canadian Center Of Science And Canadian，2008.7 . 西部探礦工程，新疆：新疆地質(zhì)礦產(chǎn)勘查局，2006.8 . 周昌壽. 露天礦邊坡穩(wěn)定，北京：中國(guó)礦業(yè)大學(xué)出版社，1990，1225；9 .彭世濟(jì). 露天采礦手冊(cè)，北京：煤炭工業(yè)出版社，1986，208212；附錄Optimization of ore grade marginal economic analysisAbstractMarginal grade ore mining is the mining industry to determine a very important decisionmaking, on the one hand, it directly affects the level of mining enterprises, but also affect the entire country39。s mineral resources, the level of effective use. Exploitation of marginal ore grade determination involves plex analysis and calculation, it is economic management, geology, mining, mineral processing, applied mathematics, puter knowledge is closely related disciplines, such as the Department. Although the previous management of the economy and mining projects in this area, scholars have done a lot of fruitful research, but there is still a lot of issues to be explored.Keywords grade marginal optimization economic analysis openpit miningMarginal quality of economic analysis to optimize the description of the problemMarginal grade ore mining andMining is an important basis for the national economy industries, the vast majority of processing industry of raw materials from the mining industry. In many countries, mining in the entire national economy occupies a very important position. In China, more than 95% of energy, more than 80% of industrial raw materials and 70% of agricultural information from the mineral resources. The United States in 1980 to mineral raw materials and fossil fuels for the production value of 198 billion . dollars, accounting for percent of GNP was reflected in its mining industry to the important role of the national economy. In the former Soviet Union39。s major sectors of the national economy, raw materials and mineral fuels accounted for 60% of the final product more thanNational industrial investment more than 30% for the mining industry, over 60% of rail freight transport and the mining industry supplies products, we can see the importance of the minerals industry. Although with the technological developments and changes in consumer demand, there will be changes in the industrial structure of the national economy, especially in developed countries, the output value of extractive industries is declining, but from a global perspective, in the very longterm period the basis of the status of the mining industry will not change.Like other industries, like the healthy development of mining and its efficiency is mainly depend on the level of scientific and technological progress and improved management. On the management, of which mining development in the scientific decisionmaking is an extremely important aspect. Indicators to determine the grade of ore mining industry is a critical decisionmaking. Grade mineralized structures is a useful ponent in the content, generally expressed as a percentage, sometimes also used grams / ton, such as units. Production in the mining process, quality is the difference between the marginal production behavior of two different criteria, for example, for the open pit mine production, theRock pile is greater than the marginal grade of ore as the ore to the concentrator for the election of other processing, and less than the marginal grade, and then sent to a waste rock dumped waste rock field platoon.Marginal quality of economic analysis to optimize the basic problemEstablished for a deposit, the mineralization of which there are differences in the level of content, is not a single value, both the high mineral content has a low mineral content. If the grade determined by the marginal high, then judged to be part of the ore on a very small proportion of production capacity in order to satisfy the requirements of sorting, it needs a lot of mining capacity and high operating costs, which could lead to a lot of noneconomic。 However, if set too low grade marginal, significant reserves, mining costs are also low, however, the annual output of the metal is very small, and cash flow in a very long life, After discount, theNet cash value of its greatly reduced, so that may also lead to noneconomic. Marginal quality of economic analysis to optimize the basic problem is to choose the best indicators of taste, so to maximize the profits of mining production. This is the most economically marginal grade of the basic structure of optimization problems, the analysis should of course be related to many natural, technological, economic and other factors, In addition, we are a socialist market economy, mineral resources belong to the state, so its economic analysis also relates to the marginal efficiency of the national economy.Mine production