国产2021成人精品_新聞資訊_臨清市瑞龍鉆具有限公司

2020-01

2019年11月25日，宣威市來(lái)賓順發(fā)煤業(yè)徐屯井發(fā)生一起頂板事故

2019年11月25日,宣威市來(lái)賓順發(fā)煤業(yè)有限公司徐屯井發(fā)生一起頂板事故，造成1人死亡。

2020-01-06

2020-01

2019年11月26日，貴州畢節康金煤礦12706綜采工作面發(fā)生一起機械傷害事故

【貴州煤監局】11月27日02:46時(shí)，接畢節分局報告：11月26日21時(shí)左右，納雍縣新房鄉康金煤礦12706綜采工作面發(fā)生一起機械傷害事故，造成1人死亡（移架過(guò)程中被液壓支架壓傷，經(jīng)醫院搶救無(wú)效于27日00:30時(shí)左右死亡）。該礦隸屬于貴州永基礦業(yè)投資有限公司，設計生產(chǎn)能力45萬(wàn)噸/年的生產(chǎn)礦井。??轉載自煤礦安全網(wǎng)，侵權必刪

2020-01-06

2020-01

2019年12月8日，窯街煤電集團金河煤礦一名皮帶工,被夾在皮帶與托輥之間受傷,經(jīng)送醫院搶救無(wú)效遇難！

2019年12月8日20時(shí)05分，窯街煤電集團有限公司金河煤礦選運隊一名皮帶工在選煤樓101皮帶機頭作業(yè)時(shí),被夾在皮帶與托輥之間受傷,經(jīng)送醫院搶救無(wú)效于20時(shí)37分死亡。

2020-01-06

2019年12月8日，窯街煤電集團金河煤礦一名皮帶工,被夾在皮帶與托輥之間受傷,經(jīng)送醫院搶救無(wú)效遇難！

2020-01

什么是煤礦采空區——瑞龍鉆具

是指在煤礦作業(yè)過(guò)程中，將地下煤炭或煤矸石等開(kāi)采完成后留下的空洞或空腔。在對煤礦開(kāi)采過(guò)程中，采空區常常給煤礦的正常生產(chǎn)帶來(lái)危害。由于在煤礦開(kāi)采過(guò)程中采空區存在大量的遺留的浮煤，浮煤的存在為煤礦自燃提供了物資條件。煤礦自燃嚴重威脅著(zhù)煤礦的安全生產(chǎn)、制約著(zhù)煤礦的生產(chǎn)，而采空區煤礦自燃在煤礦自燃發(fā)生總體中占有重要的部分。我國國有重點(diǎn)煤礦中采空區煤礦自燃占自燃火災的60%，其中絕大部分火災是有漏風(fēng)引起的。有

2020-01-06

2020-01

2019年12月12日，云南恩洪煤礦二號井"12.12"采空區火災事故

2019年12月12日，云南省恩洪煤礦二號井122910采煤工作面采空區發(fā)生火災事故。目前已對火區的主要進(jìn)回風(fēng)巷進(jìn)行了封閉，滅火工作仍在進(jìn)行，事故原因正在調查中。

2020-01-06

2020-01

頂板事故發(fā)生的原因——瑞龍鉆具

1、采空區頂板跨落不好，懸頂面積過(guò)大；?2、頂板中存在斷層、裂隙、層理等地質(zhì)構造，將頂板切割成不連續的巖塊，回柱后巖塊失穩，推倒支柱造成冒落；?3、回柱操作順序不合理；?4、工作面支護不好，支護密度不夠，初撐力低，迎山角不合理等；?5、在遇見(jiàn)未曾遇見(jiàn)的地質(zhì)構造時(shí)，沒(méi)及時(shí)采取措施；?6、工作面上、下出口連接風(fēng)巷和運輸巷，控頂面積大。兩巷掘進(jìn)時(shí)經(jīng)受壓力重新分布的影響，同時(shí)因為巷道初撐力一般較小，使直接

2020-01-06

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