陜(shan)西華電榆橫煤電有限責任公司小紀汗煤礦(以下簡稱“小紀汗煤礦(kuang)”)位于陜(shan)西(xi)省榆林市城區西(xi)北方向約30km的(de)榆(yu)陽區小紀(ji)汗鎮(zhen)井(jing)克梁村(cun)附近,行政區劃隸屬于榆(yu)林市榆(yu)陽區小紀(ji)汗鎮(zhen)、馬合鎮(zhen)、岔河則(ze)鄉管轄。井(jing)田(tian)(tian)東南距榆(yu)林市約30km,西(安(an))~包(頭(tou))鐵路(lu)(lu)(lu)神(木)~延(yan)(安(an))段、G210國道及榆(yu)(林)~神(木)~府(谷)二級(ji)公(gong)路(lu)(lu)(lu)均從井(jing)田(tian)(tian)東側通(tong)過(guo),G65包(頭(tou))~茂(名(ming))高速(su)公(gong)路(lu)(lu)(lu)、榆(yu)林繞城快速(su)干道從井(jing)田(tian)(tian)東南側通(tong)過(guo),榆(yu)(林)~烏(審(shen)旗(qi))公(gong)路(lu)(lu)(lu)從井(jing)田(tian)(tian)中北部穿過(guo),各大村(cun)鎮(zhen)之間均有簡(jian)易公(gong)路(lu)(lu)(lu)連通(tong),交通(tong)運輸條件較為便(bian)利。
井田地處陜北侏羅(luo)紀煤田榆橫礦區東北部(bu),井田范圍由(you)15個拐點坐標圈定,井田東西長約(yue)21.96km,南北寬約(yue)10.14km,面積214.8665km2,批準開采(cai)標(biao)高為(wei)+960~+610m。井田內含煤(mei)地層為侏羅系中(zhong)統延(yan)安組,含可采(cai)煤層共9層,即2、2下、3、3-1、4-1、4-2、5、7、9號煤。礦井目前開(kai)采(cai)2號煤層,2號煤層在合并區采用煤厚(hou)(hou)4.60~8.64m,平均厚(hou)(hou)度5.73m,在分岔(cha)區采用煤厚(hou)(hou)0.68~4.53m,平均厚(hou)(hou)度2.47m,埋深(shen)一般為173.98~460.36m。
該礦為低瓦(wa)斯礦井(jing),2號煤屬Ⅰ類容易自燃煤層,煤塵具(ju)有爆炸(zha)危險性,礦井水文(wen)地質類型復雜(za),沖擊地壓礦井,地溫正常。
小紀汗煤(mei)礦由中煤西(xi)安設(she)計(ji)(ji)工程有限(xian)公(gong)司設(she)計(ji)(ji),設(she)計(ji)(ji)生產能力10.00Mt/a。該礦(kuang)為一(yi)次設(she)計,分期(qi)(qi)建(jian)設(she)。礦(kuang)井初期(qi)(qi)移交生(sheng)(sheng)產時(shi)生(sheng)(sheng)產能力(li)7.00Mt/a,達(da)產及小(xiao)蘇計回風立井投(tou)(tou)入使用時(shi)生(sheng)(sheng)產能力(li)10.00Mt/a。礦(kuang)井一(yi)期(qi)(qi)工程于2015年4月(yue)開工建(jian)設(she),2016年8月(yue)基本建(jian)成;礦(kuang)井二期(qi)(qi)工程于2017年1月(yue)開工建(jian)設(she),2018年3月(yue)建(jian)設(she)完(wan)成;2019年10月(yue)12日,小(xiao)紀(ji)汗煤礦(kuang)項目通過竣(jun)工驗收,礦(kuang)井正式(shi)投(tou)(tou)入生(sheng)(sheng)產。2023年8月(yue)23日,國家礦(kuang)山安(an)全監察局綜合司以(yi)“礦(kuang)安(an)綜函〔2023〕209號”文(wen)件(jian)同意小(xiao)紀(ji)汗煤礦(kuang)生(sheng)(sheng)產能力(li)核(he)增至12.00Mt/a。2024年5月29日,陜(shan)西(xi)省應急管理(li)廳為礦井換(huan)發《安全(quan)生產許可證》(證號:(陜)MK安(an)許(xu)證(zheng)字〔2024〕0118號),有效期至2026年3月(yue)30日。
礦井采用斜井多水平開(kai)拓,地(di)面(mian)分(fen)3個工(gong)業(ye)場(chang)(chang)(chang)(chang)地(di)共(gong)布(bu)(bu)(bu)置(zhi)5條井(jing)(jing)(jing)(jing)筒(tong),其中(zhong)(zhong)主(zhu)(zhu)井(jing)(jing)(jing)(jing)工(gong)業(ye)場(chang)(chang)(chang)(chang)地(di)布(bu)(bu)(bu)置(zhi)主(zhu)(zhu)斜井(jing)(jing)(jing)(jing)、副斜井(jing)(jing)(jing)(jing),中(zhong)(zhong)央(yang)(yang)(yang)風(feng)井(jing)(jing)(jing)(jing)工(gong)業(ye)場(chang)(chang)(chang)(chang)地(di)布(bu)(bu)(bu)置(zhi)中(zhong)(zhong)央(yang)(yang)(yang)進(jin)風(feng)立(li)(li)(li)井(jing)(jing)(jing)(jing)和(he)(he)中(zhong)(zhong)央(yang)(yang)(yang)回(hui)風(feng)立(li)(li)(li)井(jing)(jing)(jing)(jing),小(xiao)蘇計(ji)風(feng)井(jing)(jing)(jing)(jing)工(gong)業(ye)場(chang)(chang)(chang)(chang)地(di)布(bu)(bu)(bu)置(zhi)小(xiao)蘇計(ji)回(hui)風(feng)立(li)(li)(li)井(jing)(jing)(jing)(jing)。主(zhu)(zhu)斜井(jing)(jing)(jing)(jing)井(jing)(jing)(jing)(jing)筒(tong)鋪(pu)設(she)帶式輸送機主(zhu)(zhu)要擔(dan)(dan)負(fu)(fu)礦(kuang)(kuang)(kuang)井(jing)(jing)(jing)(jing)原煤運(yun)輸任(ren)(ren)務(wu),兼(jian)進(jin)風(feng)及安(an)全出(chu)口;副斜井(jing)(jing)(jing)(jing)井(jing)(jing)(jing)(jing)筒(tong)運(yun)行(xing)無軌膠(jiao)輪(lun)車(che)主(zhu)(zhu)要擔(dan)(dan)負(fu)(fu)礦(kuang)(kuang)(kuang)井(jing)(jing)(jing)(jing)輔助運(yun)輸任(ren)(ren)務(wu),兼(jian)進(jin)風(feng)及安(an)全出(chu)口;中(zhong)(zhong)央(yang)(yang)(yang)進(jin)風(feng)立(li)(li)(li)井(jing)(jing)(jing)(jing)為礦(kuang)(kuang)(kuang)井(jing)(jing)(jing)(jing)專用進(jin)風(feng)井(jing)(jing)(jing)(jing)主(zhu)(zhu)要擔(dan)(dan)負(fu)(fu)礦(kuang)(kuang)(kuang)井(jing)(jing)(jing)(jing)進(jin)風(feng)任(ren)(ren)務(wu),兼(jian)安(an)全出(chu)口;中(zhong)(zhong)央(yang)(yang)(yang)回(hui)風(feng)立(li)(li)(li)井(jing)(jing)(jing)(jing)和(he)(he)小(xiao)蘇計(ji)回(hui)風(feng)立(li)(li)(li)井(jing)(jing)(jing)(jing)為礦(kuang)(kuang)(kuang)井(jing)(jing)(jing)(jing)專用回(hui)風(feng)井(jing)(jing)(jing)(jing)主(zhu)(zhu)要擔(dan)(dan)負(fu)(fu)礦(kuang)(kuang)(kuang)井(jing)(jing)(jing)(jing)回(hui)風(feng)任(ren)(ren)務(wu),兼(jian)安(an)全出(chu)口。全(quan)井田(tian)按煤組劃(hua)分為(wei)三個主水平(ping),目前開采一(yi)水平(ping)2號(hao)煤(mei)層,水(shui)(shui)平標高+890m。一(yi)水(shui)(shui)平大(da)巷(xiang)布(bu)(bu)置(zhi)在2#煤(mei)層中(zhong),采(cai)用五巷(xiang)式布(bu)(bu)置(zhi),2號(hao)煤(mei)西(xi)翼13盤(pan)區(qu)大(da)巷(xiang)采(cai)用三巷(xiang)式布(bu)(bu)置(zhi),大(da)巷(xiang)中(zhong)心距40m。全井(jing)田共劃(hua)分18個盤(pan)區(qu),目前開(kai)采(cai)一(yi)水(shui)(shui)平2號(hao)煤(mei)層11盤(pan)區(qu)和13盤(pan)區(qu)。礦井(jing)(jing)采用(yong)(yong)分區式(shi)通(tong)風方(fang)式(shi),抽出式(shi)通(tong)風方(fang)法(fa),主、副斜井(jing)(jing)和中(zhong)央進風立(li)井(jing)(jing)進風,中(zhong)央回(hui)風立(li)井(jing)(jing)和小蘇計(ji)回(hui)風立(li)井(jing)(jing)回(hui)風。井(jing)(jing)下主運(yun)輸采用(yong)(yong)帶式(shi)輸送(song)機連(lian)續(xu)運(yun)輸方(fang)式(shi),輔助(zhu)運(yun)輸采用(yong)(yong)無(wu)軌膠輪車直達運(yun)輸方(fang)式(shi)。井(jing)下采(cai)(cai)煤(mei)工作面(mian)采(cai)(cai)用一次采(cai)(cai)全高走(zou)向(xiang)長壁后(hou)退(tui)式綜合機械化采(cai)(cai)煤(mei)法,全部垮落(luo)法管(guan)理(li)頂板(ban)。現場勘查時,井(jing)下裝(zhuang)備2個綜(zong)采工作面和(he)3個掘進工作面達到礦井核(he)定生產能(neng)力。截止(zhi)2023年(nian)底,礦井剩(sheng)余資源儲量2656.435Mt,剩余(yu)可(ke)采儲(chu)量2059.963Mt,按(an)礦(kuang)井核定(ding)生產能力12.00Mt/a,考慮1.4的儲量備用系數計算(suan),礦井(jing)剩余服務年限122.6a。
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