巩义鑫 China Machinery Mining Knowledge Forum COLLECTION: spatial characteristics of the ore body means the ore body in three-dimensional space has features, such as ore body shape, occurrence, width, thickness, depth of burial and so on. These factors inherent in ore deposits in ways largely determine the development and utilization. Depth of burial is decided Deposits opencast or underground mining. In general the cost of open-pit mining is lower than underground mining. But this is not always the case, It depends on the specific conditions of occurrence deposits. Deposits although some shallow due to a large amount of stripping rock, its cost is not economical than underground mining, have mined using underground. Of course, some deposits in buried deep underground mining would only Gongyi City Xinhua Machinery Factory is a leading manufacturer of slag machine, the production of slag machine, picking mining machine products sold abroad, the choice of small water conservancy construction diesel-powered control tire Pa mining machine, which has a hydraulic walking, digging acquisition, belt conveyors, clear bottom, and other functions.巩义鑫 China Machinery Mining Knowledge Forum: Principles select mining methods followed. Deposits transmission according to the characteristics of the scraper slag machine, high and low grade ore slag machine quality, distribution and extent of optional features, in accordance with the known deposits in the exploitation of similar quality indicators mine, with several groups of the lowest grade and industrial grade boundary, select Deposits in savings and representative sections were calculated average grade, and according to national needs, the degree of resource utilization, production scale, mining, ore processing technology conditions, production costs, investment results and other factors, for each set of indicators comprehensive comparison program Select one of the most reasonable option. Gongyi City Xinhua Machinery Factory is a leading manufacturer of slag machine, the production of slag machine, picking mining machine products sold abroad, small water conservancy project construction can be used to control the diesel-powered tire Pa mining machine, which has Hydraulic walking, digging acquisition, belt conveyor slag machine, clear bottom, and other functions. Heilongjiang Nen water conservancy project. River water diversion project environmental impact analysis is the construction of a very important research topic, with quite significant diversion project on the feasibility of the decision-making. In this paper, Nierji Hydro built to run as a precondition for the expansion of Heilongjiang Nen a project on the impact of the Nen River water environment were studied. The study includes: a project to predict the impact of the Nen River hydrological regime, a project the Nen River water quality impact analysis. Paper a numerical simulation model, developed by the Danish Hydraulic Institute's MIKE11 software for solving the model to predict the impact on the water regime; the use of comparative analysis method to evaluate the impact on water quality. By studying that: the impact of a project on the Nen River diversion of river runoff mainly by Nierji reservoir drainage control, the Nen River in downstream water flow has a relatively large change in the special dry years (p = 90%) of 8 , September and October, the Nen River diversion impact on hydrological regime is large, there is no impact of non-diversion period, Qiqihar Fulaerji section driest month flow to meet 35m ~ 3 / s river environmental water requirements; hydrological regime changes and increased irrigation return flows have a certain effect on the Nen River water quality. China is the production of slag 巩义鑫 professional manufacturers willing to sacrifice the power of livelihood projects to this end! Gongyi City Xinhua Machinery Factory is a leading aircraft manufacturer Cinder Cinder GB machine, the production of slag machine, picking mining machine products sold abroad, small water conservancy construction can be used to control the diesel-powered tire Pa mine machine, it has a hydraulic walking, digging acquisition, belt conveyors, clear bottom, and other functions. Heavy slag machine | Anshun Cinder machine | mining machinery provided by Gongyi City Xinhua Machinery Factory. Gongyi City Xinhua Machinery Factory (www.gyxinhua.com) strong, credible, in Zhengzhou, Henan handling equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Xinhua machinery and you hand into the brilliant, for a better future!