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1、水城縣玉舍中寨煤礦可采煤層“三量”情況統(tǒng)計(礦井聯(lián)合試運轉(zhuǎn)期間)二〇一一年十月二十九日loanapprovalandpostcreditapprovalofficer/atalllevelsinaccordancewithcreditapprovalrules,licensingandeventualexerciseofcreditdecisionpowerofpersonsorinstitutions.Reviewfindingsandreviewcomments,accordingtotheBank'scredi
2、t可采煤層“三量”情況統(tǒng)計一、礦井既況:中寨煤礦屬整合礦井,由原中寨煤礦、原仙水溝煤礦、原羅家營煤礦、原海子灣煤礦整合而成,整全前生產(chǎn)能力為3萬t/a,整合后設(shè)計生產(chǎn)能力為15萬噸/年,服務(wù)年限為12.8a。2、行政區(qū)劃屬水城縣玉舍鄉(xiāng)。中寨煤礦屬格目底向斜南西翼西段礦區(qū)中的一個礦井;礦井北鄰玉舍煤業(yè)公司。井田范圍為一不規(guī)則的多邊形,其礦界范圍由6個拐點構(gòu)成,南北最寬1.55km,東西最長1.82km,面積1.2823km2。區(qū)內(nèi)可采煤層9層,煤層編號從上往下依次為K1-b、K9、K10、K13、K18、K26、K35
3、-b、K106-b、K109-b。水城縣玉舍鄉(xiāng)中寨煤礦礦區(qū)范圍拐點坐標(biāo)表序號直角坐標(biāo)橫坐標(biāo)(X)縱坐標(biāo)(Y)129320643547735022932213354776403293221235478265429323493547849852931007354791726293079235478758面積1.2823km2。開采標(biāo)高為+2000m~+1620mloanapprovalandpostcreditapprovalofficer/atalllevelsinaccordancewithcreditapprova
4、lrules,licensingandeventualexerciseofcreditdecisionpowerofpersonsorinstitutions.Reviewfindingsandreviewcomments,accordingtotheBank'scredit二、煤層賦存情況水城縣玉舍鄉(xiāng)中寨煤礦可采煤層特征表煤層編號平均厚度(m)煤層平均間距(m)煤層傾角(度)夾矸層數(shù)穩(wěn)定性頂 底 板頂 板底 板K1-b1.8839261~2穩(wěn) 定粉砂巖粘土巖K91.25261~2較穩(wěn)定細砂巖粘土巖10K101.68
5、272~3局部可采粉砂巖粉砂巖15K132.2027~281~2較穩(wěn)定細砂巖粘土巖30K182.85282~3穩(wěn) 定粉砂質(zhì)泥巖粘土巖28K261.4528簡單較穩(wěn)定粉砂巖粘土巖20K35-b0.8128-局部可采粉砂質(zhì)泥巖粘土巖245K106-b0.8520~23-不穩(wěn)定泥 巖粘土巖、粉砂巖25K109-b1.1423~26-不穩(wěn)定泥 巖粘土巖三、儲量計算:1、礦井地質(zhì)資源/儲量根據(jù)貴州省地礦局一○五地質(zhì)大隊于二○○七年十月編制的《貴州省水城縣玉舍鄉(xiāng)中寨煤礦資源儲量核實報告》,中寨煤礦礦區(qū)范圍內(nèi)(準(zhǔn)采標(biāo)高:+2000
6、~+1620m)礦井地質(zhì)資源/儲量(111b+331+332+333)562.9萬t,其中:(111b)為32萬t,(331)為157.4萬t,(332)為150.6萬t,(333)為222.9萬t。2、礦井工業(yè)資源/儲量礦井工業(yè)資源/儲量=(111b)+(331)+(332)+(333)×k=32+157.4+150.6+205.6×0.8=504.48(萬t)。式中:K-可信度系數(shù)。loanapprovalandpostcreditapprovalofficer/atalllevelsinaccordancew
7、ithcreditapprovalrules,licensingandeventualexerciseofcreditdecisionpowerofpersonsorinstitutions.Reviewfindingsandreviewcomments,accordingtotheBank'scredit該礦井地質(zhì)構(gòu)造復(fù)雜程度中等,煤層賦存較穩(wěn)定,根據(jù)《煤炭工業(yè)小型礦井設(shè)計規(guī)范》(GB50399-2006),(333)類別資源量可信度系數(shù)取K=0.8。3、礦井設(shè)計資源/儲量(1)設(shè)計資源/儲量:①永久煤柱留取原則永
8、久井田境界煤柱:以所劃定的礦區(qū)開采邊界的鉛垂線至所采煤層的投影線內(nèi)推20m計算。②永久煤柱損失煤層永久煤柱損失量=永久煤柱投影面積/COS(傾角)×煤層厚度×容重×0.8分別計算得出{礦區(qū)內(nèi)(333)資源量可信度系數(shù)按0.8計算}。③礦井設(shè)計資源/儲量礦井設(shè)計資源/儲量=礦井工業(yè)資源/儲量-永久煤柱損失 ?。?04.48-156.7