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PO
資訊來源：K3VL112/B-W10RKM-PO
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區(qū)段平巷的單巷布置與雙巷布置區(qū)段平巷的單巷布置與雙巷布置
綜合機(jī)械化采煤的區(qū)段平巷布置。在運(yùn)輸平巷內(nèi)，為適應(yīng)產(chǎn)量大的需要，均設(shè)置了轉(zhuǎn)載機(jī)和帶式輸送機(jī)，同時(shí)為減少增減液壓支架的麻煩，要求工作面長(zhǎng)度等長(zhǎng)，因此，對(duì)區(qū)段上下兩平巷均應(yīng)力求做到直線且互相平行布置。區(qū)段平巷采用直線和局部折線布置時(shí)，需注意采取措施，解決巷道內(nèi)局部地段的積水問題，必要時(shí)需設(shè)置專門小水泵來排水。
在普通機(jī)械化采煤時(shí)，由于工作面可以不等長(zhǎng)布置，當(dāng)采用雙巷布置時(shí)，...了解單工作面布置與雙工作面布置了解單工作面布置與雙工作面布置
單工作面布置形式在每個(gè)區(qū)段的上部和下部各布置一條平巷，準(zhǔn)備出一個(gè)采煤工作面，即用兩條平巷開采一個(gè)采煤工作面。
雙工作面布置俗稱對(duì)拉工作面布置。其實(shí)質(zhì)是利用3條區(qū)段平巷準(zhǔn)備出兩個(gè)采煤工作面。其生產(chǎn)系統(tǒng)為中間的區(qū)段平巷鋪設(shè)輸送機(jī)作為區(qū)段運(yùn)輸平巷，上、下工作面采落的煤炭分別向下、向上運(yùn)到區(qū)段運(yùn)輸平巷，由此集中運(yùn)送到采區(qū)運(yùn)輸上山。由于下工作面的煤炭是向上運(yùn)送，因此，下工作面的長(zhǎng)...工作面回采順序一般包括了以下幾種工作面回采順序一般包括了以下幾種
工作面回采順序一般有后退式、前進(jìn)式、往復(fù)式及旋轉(zhuǎn)式等幾種。
后退式是工作面由采區(qū)邊界向采區(qū)上山方向推進(jìn)的回采順序。區(qū)段上、下平巷和開切眼等回采巷道掘出并安裝設(shè)備后，工作面才開始回采，采空區(qū)后方的區(qū)段平巷隨工作面推進(jìn)而報(bào)廢垮落。后退式是最常用的一種同采順序。
前進(jìn)式是工作面由采區(qū)上山向采區(qū)邊界方向推進(jìn)的回采順序。其區(qū)段平巷不需要預(yù)先掘出，只需在采空區(qū)留下上區(qū)段的運(yùn)輸平巷...汽輪機(jī)油mobil品質(zhì)保證。。。成都液壓大家好才是真的好。。。銷售熱線400-069-0062汽輪機(jī)油美孚導(dǎo)熱油真空泵油EP3潤(rùn)滑脂切削油美孚SHCXMP320齒輪油汽輪機(jī)油美孚潤(rùn)滑脂美孚1535水溶性切削油導(dǎo)熱油。
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沿空留巷區(qū)段平巷的布置主要有前進(jìn)式沿空留巷和后退式沿空留巷。前進(jìn)式沿空留巷是指工作面前進(jìn)式回采，沿采空區(qū)留出平巷。后退式沿空留巷是指先掘進(jìn)區(qū)段運(yùn)輸平巷到采區(qū)邊界，工作面后退式回采，回采后留下該平巷作為下區(qū)段回風(fēng)平巷。后退式沿空留巷克服了前進(jìn)式回采時(shí)前方煤層賦存情況不明及留巷影響工作面端頭采煤等缺點(diǎn)，但增加了平巷的掘進(jìn)工程量。
我國(guó)目前采用后退式沿空留巷較多。...
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