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我国是一个自然灾害较多,受其危害较严重的国家。但有些自然灾害本来是不会发生的,由于人类的生产活动,诱发了这些自然灾害或者增大了这些灾害出现的频率和破坏强度,可以说有些自然灾害完全是人类从地下挖出来的。 冲击地压 冲击地压的产生,就是人类由于采煤向深部发展,使岩体自重应力超过了煤层抗压强度,因开采造成能量大量积聚,煤层本身又具有冲击倾向性,在诱发因素的影响下,能量突然释放,形成冲击地压,造成诱发性地震。近年来,随着开采深度的增加,这类自然灾害呈上升趋势。目前,全国有冲击地压的矿井已从1985年的32对增加到60多对,新增加的局矿
Our country is a country that has more natural disasters and harms it more seriously. However, some natural disasters could never have occurred. Due to human activities, these natural disasters are induced or the frequency and intensity of the disasters are increased. It can be said that some natural disasters are entirely dug from the ground by human beings. The impact of rock burst pressure is the development of mankind due to mining to the deep, so that the self-weight stress of rock exceeds the compressive strength of coal seam, due to mining caused by the accumulation of large amounts of energy, the coal seam itself has an impact on the projectile, the impact of predisposing factors Under the sudden release of energy, the formation of the impact of pressure, resulting in induced earthquake. In recent years, as the depth of mining has increased, such natural disasters have been on the rise. At present, there are more than 60 pairs of rock-mines in the country that have been increased from 32 pairs in 1985 to newly added mines