机械5

祁东煤矿1.2 Mt/a新井设计 摘要 本设计包括三部分：一般部分、专题部分和翻译部分。 一般部分为祁东煤矿1.2 Mt/a新井设计，共分十章：矿井概述及井田地质特征，井田境界和储量，矿井工作制度、设计生产能力及服务年限，井田开拓，采区巷道布置，采煤方法，井下运输，矿井提升，矿井通风及矿井基本技术经济指标。 位于安徽省宿州市东南，距离市中心20km。矿区对外交通便利。区内地势较为平坦，井田走向长度约9 km，倾斜方向长约4 km。面积为23.16 km2。井田主采煤层为煤层，厚度平均为4.70 m。煤层倾角平均为14°，属于缓斜煤层。 井田工业储量为157.6 Mt，矿井可采储量92.4 Mt。矿井服务年限为55 a，矿井正常涌水量为437.06，最大涌水量为586.10。矿井为高瓦斯矿井,矿井是突出矿井。 祁东煤矿矿井工作制度为“三八”制，一个综采工作面保产。开拓方式为立井暗斜井延伸两水平，水平标高分别为-650 m，-900 m，准备方式为采区巷道布置。矿井主井采用箕斗提煤，副井采用罐笼作为辅助提升。工作面采用长壁采煤法，面长180 m，采煤工艺为综采。矿井主运输为胶带运输，辅助运输采用架线电机车牵引1.5 t固定式矿车运输。矿井通风采用采区式通风。 针对南二采区采用了采区准备方式，共划分11个区段工作面，并进行了运煤、通风、运料、排矸、供电系统设计。 专题部分题目是煤矿深井巷道矿压显现及其控制研究。以相关工程测试结合目前理论研究，进行了详实的矿压显现观测数据收集与整理，给出了深井软岩巷道的变形收敛规律，结合规律提出了控制的建议，对矿井生产实践具有显着的指导意义。 翻译部分对压力拱理论结合回采率进行房柱式开采中计算支柱荷载进行了介绍，其英文题目为Coal pillar load calculatio
n by pressure arch theory a
nd
near field extractio
n ratio。 关键词：祁东矿井；双立井；采区布置；综采大采高；采区式；软岩巷道；矿压显现 Abstract This desig
n co
ntai
ns three parts:the ge
neral part,the special part a
nd the tra
nslated part. The ge
neral part is a
new desig
n of Qi Do
ng coal mi
ne located i
n southeast of Suzhou whose productio
n capacity is 1.2 Mt per year.It has te
n chapters as follows:the outli
ne of mi
ne a
nd mi
ne field geology, bou
ndary a
nd reserves, worki
ng system a
nd productive capacity a
nd service life, developme
nt method of the mi
ne, the mai
n roadways, coal mi
ni
ng method a
nd layout or roadways i
n worki
ng area,tra
nsportatio
n of u
ndergrou
nd, mi
ne lifti
ng, mi
ne ve
ntilatio
n a
nd safety, mai
n tech
nique—eco
nomic i
nduces. The QI Do
ng mi
ne filed lies i
n the
north of J southeast of Suzhou about 20 kilometers.The tra
nsportatio
n is co
nve
nie
nt a
nd.It covers 23.16 square kilometers. The bou
ndary of the mi
nefield ru
n 9 kilometers o
n the strike a
nd the pitch le
ngth is 4 kilometers. Three is the mai
n coal seam,its dip a
ngle is 14 degree a
nd thick
ness is about 4.70m o
n average. The proved reserves of the mi
nefield are 157.6 millio
n to
ns,a
nd the recoverable reserves are 92.4 millio
n to
ns. The desig
ned productive capacity is 1.2 millio
n to
ns perce
nt year, a
nd the service life of the mi
ne is 55 years. The
normal flow of the mi
ne is 437.06m3 perce
nt hour a
nd the max flow of the mi
ne is 586.10m3 perce
nt hour. The mi
neral well gas gushes is high, It is a high gas mi
neral well. The worki
ng system is “three-eight”.O
ne productive place meets the requireme
nt. The mode of developme
nt this desig
n uses a duel-vertical shaft a
nd i
ncli
ned shaft two-level developme
nt method. The mi
ne has two levels, the first level locates i
n the level of –650 meters, the seco
nd i
n the level of –900 meters.The mai
n shaft uses skip hoisti
ng a
nd the auxiliary shaft adopts cage hoisti
ng. The worki
ng face adopts lo
ng wall retreati
ng to the strike.Its le
ngth is 180 meters.The tech
nology of the worki
ng face is the full-mecha
nized mi
ni
ng.Belt Co
nveyor to tra
nsit coal is used chiefly to tra
nsport coal, the auxiliary tra
nsportatio
n uses 1.5t solid car. Districts ve
ntilatio
n is used for Xu Cha
ng coal mi
ne. The desig
n applies strip preparatio
n agai
nst the first district of South Two which divided i
nto 11 districts totally, a
nd co
nducted coal co
nveya
nce, ve
ntilatio
n, ga
ngue co
nveya
nce a
nd electricity desig
ni
ng. The mo
nographic study e
ntitled " Pressure behavior a
nd co
ntrol of deep mi
ne ", with the theoretical research related e
ngi
neeri
ng test, co
nducted a detailed pressure observatio
n data collectio
n a
nd processi
ng, gave the deformatio
n a
nd co
nverge
nce law of soft rock roadway,with law we ca
n recomme
nd some co
ntrol measures which really have a importa
nt i
nflue
nce. The e
nglish topic of tra
nslatio
n part is Coal pillar load calculatio
n by pressure arch theory a
nd
near field extractio
n ratio. Keywords:Qido
ng coal mi
ne; double vertical shaft; district mode; full-height coal cavi
ng; districts ve
ntilatio
n; soft rock roadway; pressure observati
n 目录 1矿区概述及井田地质特征1 1.1矿区概述1 1.1.1交通位置1 1.1.2河流1 1.1.3矿区气候条件1 1.1.4工农业生产情况1 1.2井田地质特征2 1.2.1井田地形及煤系地层概述2 1.2.2井田地质构造3 1.2.3井田水文地质4 1.3井田煤层特征7 1.3.1煤层埋藏条件及围岩性质7 1.3.2煤层特征7 2井田境界与储量9 2.1井田境界9 2.1.1井田境界划分的原则9 2.1.2井田境界9 2.2矿井工业储量10 2.2.1井田勘探类型10 2.2.2矿井工业储量的计算及储量等级的圈定10 2.3矿井可采储量10 2.3.1计算可采储量时，必须要考虑以下储量损失10 2.3.2各种煤柱损失计算11 3矿井工作制度、设计生产能力及服务年限14 3.1矿井工作制度14 3.2矿井设计生产能力及服务年限14 3.2.1确定依据14 3.2.2矿井设计生产能力14 3.2.3矿井服务年限14 3.3井型校核15 4井田开拓16 4.1井田开拓的基本问题16 4.1.1影响井田开拓的主要因素16 4.1.2井筒形式、数目的确定16 4.1.3工业广场的位置、形状和面积的确定17 4.1.4开采水平的确定18 4.1.5井底车场和运输大巷的布置18 4.1.6矿井开拓延伸及深部开拓方案18 4.1.7开采顺序18 4.1.8方案比较19 4.2矿井基本巷道25 4.2.1井筒25 4.2.2井底车场28 4.2.3主要开拓巷道30 5采区巷道布置33 5.1煤层的地质特征33 5.1.1首采区煤层特征33 5.1.2顶底板特征33 5.1.3水文地质33 5.1.4地表情况33 5.2采区巷道布置及生产系统33 5.2.1采区位置及范围33 5.2.2采煤方法及工作面长度的确定34 5.2.3确定采区各种巷道的尺寸、支护方式及通风方式34 5.2.4煤柱尺寸的确定34 5.2.5采区巷道的联络方式34 5.2.6采区接替顺序34 5.2.7采区生产系统35 5.2.8采区内巷道掘进方法35 5.2.9采区生产能力及采出率36 5.3采区车场选型设计37 5.3.1确定采区车场形式37 5.3.2采区主要硐室布置38 6采煤方法40 6.1采煤工艺方式40 6.1.1采煤方法的选择40 6.1.2确定采煤工艺方式40 6.1.3回采工作面参数42 6.1.4回采工作面破煤、装煤方式46 6.1.5回采工作面支护方式47 6.1.6端头支护及超前支护方式48 6.1.7各工艺过程注意事项48 6.1. 9回采工作面正规循环作业50 6.2回采巷道布置53 6.2.1回采巷道布置方式53 6.2.2回采巷道参数53 7井下运输56 7.1概述56 7.1.1井下运输设计的原始条件和数据56 7.1.2运输距离和货载量56 7.1.3矿井运输系统56 7.2采区运输设备选择57 7.2.1设备选型原则57 7.2.2采区设备的选型57 7.3大巷运输设备选择59 7.3.1辅助运输大巷设备选择59 8矿井提升61 8.1概述61 8.2主副井提升61 8.2.1主井提升61 8.2.2提升能力验算63 8.2.3副井提升64 9矿井通风及安全66 9.1矿井通风系统的选择66 9.1.1矿井通风系统的基本要求66 9.1.2矿井通风系统的确定66 9.1.3采区通风系统的确定68 9.2矿井风量计算68 9.2.1通风容易时期和通风困难时期采煤方案的确定69 9.2.2各用风地点的用风量和矿井总用风量71 9.2.3掘进工作面风量计算72 9.2.4硐室需风量计算73 9.2.5矿井风量计算74 9.2.6风量分配75 9.2.7通风构筑物76 9.3矿井通风阻力计算76 9.3.1计算原则76 9.3.2矿井最大阻力路线77 9.3.3矿井通风阻力计算77 9.4选择矿井通风设备79 9.4.1选择主要通风机的基本原则80 9.4.2通风机风压的确定80 9.4.3主要通风机工况点82 9.4.4主要通风机的选择及风机性能曲线82 9.4.5电动机选型83 9.5安全灾害的预防措施84 9.5.1预防瓦斯和煤尘爆炸的措施84 9.5.2预防井下火灾的措施84 9.5.3防水措施85 10矿井基本技术经济指标86 参考文献87 致谢88