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1、井工煤矿开采的主要特点是什么? 答:井工煤矿开采必须从地面向地下开掘一系列井巷,其生产过程是地下作业,自然条件比较复杂,开采的主要特点是需要进行矿井通风,存在瓦斯、煤尘、顶板、火、水五大灾害。 (1)矿井通风。因为井工煤矿生产是地下作业,地面空气在进入井下并流经各作业场所的过程中,将掺入有害气体和矿尘,成分逐渐发生变化。同时,
1, underground mining coal mine is the main characteristics of what? A: underground coal mining must dig a series of underground tunnel from the ground to the underground, the production process is underground operations, the natural conditions are more complex, the main feature of mining is the need for mine ventilation , There are five major disasters of gas, coal dust, roof, fire and water. (1) mine ventilation. Because underground coal mine production is underground operations, ground air into the underground and flow through the various job sites in the process, will be mixed with harmful gases and dust, the composition gradually changes. Simultaneously,