【正文】
事故防治管理模式未做到科學(xué)、合理 、全面、有效,所導(dǎo)致的安全事故較高,致使煤礦行業(yè)是一個危險性極高的行業(yè),因此其防治管理的完善和優(yōu)化是迫切需要解決的問題。 這四種冒頂事故特點(diǎn)是面積大、來勢兇猛、后果嚴(yán)重,不僅我們必須抓緊研究大型冒頂事故的規(guī)律性。 ② 對于有些回采工作面,高檔普采和普采工作面,回采工程中,煤壁的前方頂板和煤層特別破碎,為保證正常割煤,不漏 矸石,要強(qiáng)化臨時支護(hù),縮小空頂時間。 (4)正確布置厚煤層下分層工作 面位置,防止不分層工作面布置在應(yīng)力集中區(qū)。 ( Who) 人的生理因素:主要是指礦工的反應(yīng)速度。 ( 2)厚層難冒頂板大面積 冒頂:此類冒頂預(yù)兆主要表現(xiàn)為: ①頂板斷裂聲響的頻率和聲響增大; ②煤幫有明顯受壓與偏幫現(xiàn)象; ③底板出現(xiàn)底鼓或沿煤柱附近的底板發(fā)生裂隙; ④巷道超前壓力較明顯; ⑤工作面中支柱載荷和頂板下沉速度明顯增大; ⑥有時采空區(qū)頂板發(fā)生裂隙或淋水加大,向頂板中打的鉆孔原先流水后變?yōu)榱靼缀隣畹囊后w,這是斷裂巖塊互相摩擦形成的巖粉與水的混合物。 2 5W1H方法 內(nèi)容介紹: 是運(yùn)用邏輯思維推理的方法對問題進(jìn)行分析,在分析時往往要通過一系列“為什么”而使問題得到圓滿的解答,可以借用下表 1 來理解該方法。 關(guān)鍵詞: 5W1H方法;安全;回采工作面;頂板事故;預(yù)防;措施 中圖分類號 : TD355 文獻(xiàn)標(biāo)識碼 : B Workingface of Coal Mine Roof Accidents Analyze Based on 5W1H WANG Chunhua ( Mining College of Guizhou University, Guizhou Province, Guiyang 550025, china) Abstract: As one of the five natural disasters in the coal accidents, the roof accidents have an important effect on the safe production of the coal mining. How to avoid the happen of the roof accidents, especially the accidents happened on the coal face, is placed an important theme in the technology management and the safe management in the production of coal mine. Roof accident is sudden, catastrophic, destructive and secondary, basic roof accident management is to nip in the bud, prevention is the first and foremost task. By using the 5W1H method of system engineering to analyze the mine stope roof accident, bined with the relevant laws and regulations and professional knowledge, introduced the main types of roof accident in mine working face and occurrence rule, and put forward targeted preventive measures. The fact proves, as long as we pay attention to the roof management, master the relevant theoretical knowledge, found the roof movement law, the use of reasonable precautions, adopt correct management, roo