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為什么高檔普采工作面開切眼初采初放時要上全特殊支護?

作者:煤礦安全網 2013-11-01 22:18 來源:煤礦安全網

為什么高檔普采工作面開切眼初采初放時要上全特殊支護?
  答:高檔普采工作面褲腰初放時頂板一次垮落面積大,動壓顯現強烈,因此必須提高工作面支護強度,增加支護穩定性,只有上全特殊支護才能有效避免初采初放期間發生的頂板事故。

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