机械5

祁东煤矿3.0 Mt/a新井设计 摘要 本设计包括三个部分：一般部分、专题部分和翻译部分。 一般部分为祁东煤矿3.0 Mt/a新井设计。一般部分共包括10章：1.矿区概述及井田地质特征；2.井田境界与储量；3.矿井工作制度、设计生产能力及服务年限；4.井田开拓；5.准备方式-采区巷道布置；6.采煤方法；7.井下运输；8.矿井提升；9.矿井通风与安全；10.矿井基本技术经济指标。 祁东矿位于安徽省宿州市埇桥区祁县镇、西寺坡镇和固镇县湖沟区境内，井田中心距宿州市约20km，交通便利。井田形状近似长方形，东西长约4.5 km，南北宽约1.4 km，面积约24 km2。井田内开采61和71煤层，先采61。煤层倾角9.05~13.8°，平均12.1°。两煤层平均厚度均为7.0 m。井田地质条件较为简单。 矿井工业储量为488.397Mt，可采储量为297.74Mt。矿井设计生产能力为3.0Mt/a。矿井服务年限70.89 a。矿井涌水量不大，正常涌水量为440 m3/h，最大涌水量为630 m3/h。煤层相对瓦斯涌出量为10m3/t，属高瓦斯煤层。煤层自燃倾向等级为三类不易自燃；除无烟煤与天然焦以外，煤尘均具有爆炸危险。 矿井采用立井两水平开拓，暗斜井延深，下行开采。一矿一面，采煤方法为综合机械化放顶煤开采。全矿采用胶带运输机运煤，辅助运输采用1.5 t固定箱式矿车。矿井通风方式采用两翼对角式。 矿井年工作日为330 d，日净提升时间16 h，工作制度为“三八制”。专题部分题目是深部巷道支护技术研究。翻译部分是一篇关于低透气性单煤层综合瓦斯抽采技术的，英文题目为Research i
nto Comprehe
nsive Gas Extractio
n Tech
nology of Si
ngle Coal Seams with Low Permeability i
n the Jiaozuo Coal Mi
ni
ng Area。 关键词：新井设计；放顶煤；两翼对角式 ABSTRACT This desig
n co
ntai
ns three parts: the ge
neral part，the special subject part a
nd the tra
nslatio
n. The ge
neral part is a
new desig
n of the Qido
ng mi
ne. This part is divided i
nto te
n chapters: 1.A
n outli
ne of the mi
ne field geology; 2. Bou
ndary a
nd the reserves of mi
ne; 3.The service life a
nd worki
ng system of mi
ne; 4.Developme
nt e
ngi
neeri
ng of coalfield; 5.The layout of mi
ni
ng area; 6.The method used i
n coal mi
ni
ng; 7. Tra
nsportatio
n of the u
ndergrou
nd; 8.The lifti
ng of the mi
ne; 9. The ve
ntilatio
n a
nd the safety operatio
n of the mi
ne; 10.The basic eco
nomic a
nd tech
nical
norms. The Q ido
ng mi
ne locates at the crosspart of Qixia
n, Xisipo a
nd Guzhe
n of Suzhou i
n A
nhui provi
nce, 20 km away from the ce
nter of the tow
n. A
nd the tra
nsportatio
n is very co
nve
nie
nce. The shape of mi
nefield is like a recta
ngle which has a le
ngth of 4.5 km i
n the east a
nd west a
nd a width of 1.4 km i
n the south a
nd
north o
n average. The total pla
ne area of the mi
ne is about 24 km2. There are two coal seams i
n the mi
ne —NO.61 a
nd NO. 71. Mi
ni
ng the NO.61 coal seam firstly.The a
ngle is about 9.05~13.8 degree with a
n average of 12.1 a
nd the thick
ness of both coal seams is about 7.0 m. The mi
nefield geological co
nditio
n is simple. The proved reserves of the mi
nefield are 488.397 millio
n to
ns. The recoverable reserves are 297.74 millio
n to
ns. The desig
ned productive capacity is 3.0 millio
n to
ns per year. The service life is 70.89 years. The
normal water flow of the mi
ne is 440 m3 per hour a
nd the max water flow is 630 m3 per hour. The Relative gas discharge qua
ntity is 10 m3 per to
n, whichmea
ns it is a high gaseous mi
ne. The coal seam is hardly spo
nta
neous combustio
n a
nd the level of spo
nta
neous combustio
n is Ⅲ. Apart from coal without gas, the coal seam is of high explosio
n hazard. The developme
nt of the mi
ne is double levels with vertical shaft at the first level a
nd i
ncli
nd shaft at the seco
nd level. The
number of the worki
ng faces is o
nly o
ne. The mi
ni
ng method is Comprehe
nsive mecha
nizatio
n with putti
ng off the top coal tech
nology. Several belt co
nveyers u
ndertake the job of coal tra
nsport i
n the mi
ne a
nd the auxiliary tra
nsportatio
n system is ce
ntralized juxtapose. The ve
ntilatio
n method is diago
nal ve
ntilatio
n system. We work 330 days per year a
nd exaltate 16 hours o
ne day. The ―three–eight‖ worki
ng system is applied for coal mi
ni
ng. The title of the special subject part is ―Study o
n the Support of Depth Portio
n tu
n
nel Tech
nique‖. The tra
nslatio
n prat is a paper about gas extractio
n tech
nology of si
ngle coal seam with low permeability.Its title is ―Research i
nto Comprehe
nsive Gas Extractio
n Tech
nology of Si
ngle Coal Seams with Low Permeability i
n the Jiaozuo Coal Mi
ni
ng Area‖. Keywords：desig
n of mi
ne; top-coal cavi
ng; diago
nal ve
ntilatio
n system 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矿区地理位置1 1.1.2矿区经济概述2 1.1.3矿区气候条件2 1.1.4矿区的水文情况2 1.2井田地质特征2 1.2.1井田地质构造2 1.2.2井田勘探概述2 1.2.3井田地层3 1.2.4水文地质特征3 1.3煤层特征9 1.3.1每层埋藏条件9 1.3.2每层群层数及围岩性质9 1.3.3煤质特征9 1.3.4瓦期、煤尘、自燃发火及地温10 1.3.5工业用途10 2井田境界与储量11 2.1井田境界11 2.1.1井田范围确定依据11 2.1.2井田范围11 2.1.3开采界限11 2.1.4井田尺寸11 2.2矿井工业储量12 2.2.1储量计算基础12 2.2.2井田地质勘探12 2.2.3工业指标的确定12 2.2.3工业储量计算13 2.3矿井可采储量16 2.3.1安全煤柱留设原则16 2.3.2矿井永久保护煤柱损失量16 2.3.3矿井可采储量18 3矿井工作制度、设计生产能力及服务年限20 3.1矿井工作制度20 3.2矿井设计生产能力及服务年限20 3.2.1确定依据20 3.2.2矿井设计生产能力20 3.2.3矿井服务年限20 3.2.4井型校核21 4井田开拓22 4.1井田开拓的基本问题22 4.1.1井筒形式的确定22 4.1.2工业场地的位置24 4.1.3开采水平的确定24 4.1.4矿井开拓方案比较24 4.2矿井基本巷道33 4.2.1井筒33 4.2.2开拓巷道33 4.2.3井底车场及硐室33 5准备方式枣采区巷道布置43 5.1煤层地质特征43 5.1.1采区位置43 5.1.2采区煤层特征43 5.1.3煤层顶底板岩石构造情况43 5.1.4水文地质43 5.1.5地质构造43 5.1.6地表情况43 5.2采区巷道布置及生产系统43 5.2.1采区位置及尺寸43 5.2.2采煤方法及工作面长度的确定43 5.2.3确定采区回采巷道的尺寸、支护方式及通风方式44 5.2.4煤柱尺寸的确定45 5.2.5采区生产系统45 5.2.6采区内巷道掘进方法45 5.2.7采区生产能力及采出率45 5.3采区车场选型设计48 5.3.1确定车场形式48 5.3.2采区主要硐室布置49 6采煤方法50 6.1采煤工艺方式50 6.1.1采区煤层特征及地质条件50 6.1.2确定采煤工艺方式50 6.1.3回采工作面参数的确定51 6.1.4回采工作面破煤、装煤方式52 6.1.5回采工作面运煤方式53 6.1.6回采工作面支护方式53 6.1.7采放比、放煤步距、放煤方式55 6.1.8各工艺过程注意事项56 6.2劳动组织和工作面成本57 6.2.1劳动组织57 6.2.2工作面吨煤成本57 6.3回采巷道布置59 6.3.1回采巷道布置方式59 6.3.2回采巷道参数59 6.3.2支护方式61 7井下运输63 7.1概述63 7.1.1井下运输的原始条件和数据63 7.1.2井下运输系统63 7.2煤炭运输方式和设备选择63 7.3辅助运输方式和设备选择65 7.3.1选择电机车65 7.3.2设备选择66 8矿井提升68 8.1矿井提升的原始数据和地质条件68 8.2主副井提升68 8.2.1主井提升68 8.2.2副井提升71 9矿井通风及安全73 9.1矿井通风系统确定73 9.1.1矿井概况73 9.1.2矿井通风系统的基本要求73 9.1.3矿井通风方式的确定73 9.1.4矿井通风方法的选择75 9.1.5采区通风系统的要求77 9.1.6工作面通风方式的选择77 9.2矿井风量计算78 9.2.1采煤工作面实际需风量78 9.2.2备用工作面需风量80 9.2.3掘进工作面需风量80 9.2.4硐室需风量80 9.2.5其它巷道需风量80 9.2.6矿井总风量80 9.2.7风量分配81 9.2.8风量验算81 9.3矿井通风总阻力计算82 9.3.1矿井通风总阻力计算原则82 9.3.2确定矿井通风容易和困难时期83 9.3.3矿井最大阻力路线83 9.3.4矿井通风阻力计算83 9.3.5矿井总风阻等积孔计算88 9.4选择矿井通风设备89 9.4.1主要通风机选择89 9.4.2电动机选型92 9.5安全灾害的预防措施92 9.5.1瓦斯管理措施92 9.5.2煤尘的防治92 9.5.3预防井下火灾的措施93 9.5.4防水措施93 10设计矿井基本技术经济指标94 参考文献96 致谢97