你的问题是一个问题对于所有类型的住宅附近开采或建立地区,不仅锰矿业。煤矿应该从建立区域的距离取决于地面的能力——地面是否硬或软,使用的炸药类型——尤其是释放的能量所使用的炸药。这产生的爆破振动的影响。目前澳大利亚和新西兰的建议是(10毫米/秒的最大爆炸振动)[1]在居民区,最好小于2.5 m / s。——数量的炸药引爆。许多小爆炸通常比一个非常大的爆炸。地质构造的存在,似乎可以优先运输和放大爆炸能量的问题法律和标准,这样的事情是矿业地区之间差异。即使在国家,如美国、加拿大和澳大利亚之间的不同国家或省份。这些国家没有国家立法对矿山的操作。每个州的省负责这样的法律在其管辖范围内。 In the 1980s, in the State of New South Wales in Australia, to protect lakes and dams from unexpected drainage and also to protect underground coal mines and the people that work in them from water inundation from lakes, dams or other such large stores of surface water a 45 degree angle rule was used. > From the edge of the lake draw a 45 degree line downwards. Where that line intersects the horizontal, or near horizontal, coal seam that defines the closest proximity the mine was allowed to get near the surface lake or dam. Because of the geometry of a 45 degree triangle both of the shorter sides are the same length. In the case of this rule the distance from the edge of the lake or dam is equal to the depth of mining. One of the problems with this rule is coal mines in Australia do not use explosives. Coal is mined using cutting machines via [longwall mining][2]. In the City of Ballarat, Australia, gold mining resumed in the 1990s, after the closure of mines during the 1914 to 1918 world war because of a labor shortage. The [mine operates underneath the city][3] of 105 000 people. Under the license to operate, from the State Government of Victoria: > Our licence conditions state that the vibration limit for blasting is 10 mm/sec and that 95% of all blasts must be below 5 mm/sec. The mine has a **self imposed** limit of 2.5 mm/s. Under a [proposed expansion to the mine][4], the newer region will be approximately 50 m below the surface. See the sectional diagram at the end of the webpage. The surface is at elevation RL 1205 and the top of the Nick O' Time Shoot is elevation RL 1150. In your situation, something else to be wary of is exposure to manganese dust from the mine or processing plant. The human body requires small amounts of [manganese][5], but too much can be toxic. Excessive exposure can lead to heath problems with the respiratory tract and/or the brain. > Manganese effects occur mainly in the respiratory tract and in the brains. Symptoms of manganese poisoning are hallucinations, forgetfulness and nerve damage. Manganese can also cause Parkinson, lung embolism and bronchitis. When men are exposed to manganese for a longer period of time they may become impotent. A syndrome that is caused by manganese has symptoms such as schizophrenia, dullness, weak muscles, headaches and insomnia. Additional references concerning exposure to excessive amounts of manganese: 1. [National Institutes of Health][6] 2. [Impact of open manganese mines on the health of children dwelling in the surrounding area][7] 3. [Centers for Disease Control and Prevention (USA)][8] 4. [World Health Organization][9] [1]: https://ballaratgoldmine.com.au/blasting-fact-sheet/ [2]: https://en.wikipedia.org/wiki/Longwall_mining [3]: https://ballaratgoldmine.com.au/mining-activities/ [4]: https://ballaratgoldmine.com.au/exploration/ [5]: https://www.lenntech.com/periodic/elements/mn.htm [6]: https://ods.od.nih.gov/factsheets/manganese-healthprofessional/ [7]: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3166881/ [8]: https://www.cdc.gov/niosh/topics/manganese/default.html [9]: https://www.euro.who.int/__data/assets/pdf_file/0003/123078/AQG2ndEd_6_8Manganese.pdf