机械5

顾桥矿井1.5Mta新井设计 摘要 一般部分针对淮南顾桥矿井进行了井型为1.5 Mta的新井设计。顾桥矿井位于安徽省淮南市境内，井田走向长约7.5 km，倾向长约3.5km，面积约27.1km2。主采煤层为13-1和11-2煤层，平均厚度分别为4.8 m和3.2 m，平均倾角都为6°。井田工业储量为318.01 Mt，可采储量188.72 Mt，矿井服务年限为96.8a。矿井正常涌水量为194 m3h，最大涌水量为230 m3h；矿井相对瓦斯涌出量为13.215 m3t，属高瓦斯矿井。 根据井田地质条件，设计采用立井单水平开拓方式，采区带区式布置方式，共划分为6个带区，3个采区，水平标高-780 m。轨道大巷、胶带机大巷和回风大巷皆为岩石大巷，布置在11-2煤层底板岩层中。考虑到本矿井为高瓦斯矿井，故前期采用中央边界式通风方式，后期采用混合式通风方式，并在开采前预掘底板瓦斯抽排巷进行瓦斯提前卸压抽放。 针对一带区进行了准备方式设计。共划分7个分带工作面，并进行了运煤、通风、运料、排矸、供电系统设计。带区服务年限7.9年。 对110101工作面进行了采煤工艺设计。该工作面煤层平均厚度为3.2m，平均倾角6°，直接顶为粘土砂岩，老顶为细砂岩。工作面采用长壁综采一次采全高的采煤方法。采用双滚筒采煤机割煤，往返一次割两刀。采用“三八制”工作制度，截深0.8 m，每天六个循环，循环进尺4.8 m，月推进度144 m。 大巷采用胶带输送机运煤，辅助运输采用蓄电池式电机车牵引固定箱式矿车。主井采用两套带平衡锤的16 t箕斗提煤，副井采用一对1.5 t矿车双层四车宽罐笼运料和升降人员。 专题部分题目是《岩巷快速施工技术现状与支护趋势》，经过查阅大量资料和结合国内外现场应用分析，认为发展快速掘进技术对煤矿经济持续增长有着非常大的意义。 翻译部分题目为《Effects of freque
ncy a
nd grouted le
ngth o
n the behavior of guided ultraso
nic waves i
n rock bolts》，实验结果显示其超声导波在锚杆中的衰减和群速度随着频率和锚固长度的变化而变化。 关键词：顾桥矿；立井单水平；带区布置；综采大采高；中央边界式；快速施工；支护； ABSTRACT The ge
neral desig
n is about a 1.5Mta
new u
ndergrou
nd mi
ne desig
n of Guqiao coal mi
ne. Guqiao coal mi
ne is located i
n Huai
na
n, A
nhui provi
nce. It’s about 7.5 km o
n the strike a
nd 3.5 km o
n the dip, with the 22.1 km2 total horizo
ntal area. The mi
nable coal seam are 13-1 a
nd 11-2 with a
n average thick
ness of 4.8 m a
nd 3.2m ，the average dip is 6°. The proved reserves of this coal mi
ne are 318.01 Mt a
nd the mi
nable reserves are 188.72 Mt, with a mi
ne life of96.8 a. The
normal mi
ne i
nflow is 194 m3h a
nd the maximum mi
ne i
nflow is 230 m3h. The mi
ne gas emissio
n rate is 13.215 m3t which ca
n be recog
nized as high gas mi
ne. Based o
n the geological co
nditio
n of the mi
ne, this desig
n uses vertical shaft si
ngle-level developme
nt method, both district a
nd strip preparatio
n ,which divided i
nto 6 strips a
nd 3 distrits totally, The level is at -780 m .track roadway, belt co
nveyor roadway a
nd retur
n airway are all rock roadways, arra
nged i
n the floor rock of 11-2 coal seam. Taki
ng i
nto accou
nt of the high gas emissio
n, mi
ne ve
ntilatio
n method use ce
ntral bou
ndary ve
ntilatio
n i
n earlier stage a
nd combi
ned ve
ntilatio
n, excaves bottom gas drai
nage roadway before mi
ni
ng to relief gas pressure i
n adva
nce. The desig
n apply strip preparatio
n agai
nst the first ba
nd of O
ne which divided i
nto 7 stirps totally, a
nd co
nducted coal co
nveya
nce, ve
ntilatio
n, ga
ngue co
nveya
nce a
nd electricity desig
ni
ng. It’s life is 7.9 a. The desig
n co
nducted coal mi
ni
ng tech
nology desig
n agai
nst the 110101 worki
ng face. The coal seam average thick
ness of this worki
ng face is 3.2 m a
nd the average dip is 6°, the immediate roof is day sa
ndsto
ne a
nd the mai
n roof is sa
nd sto
ne. The worki
ng face apply fully-mecha
nized lo
ng-wall full-height coal cavi
ng method, a
nd usi
ng double drum shearer cutti
ng coal which cutti
ng twice each worki
ng cycle. “Three-Eight” worki
ng system has bee
n used i
n this desig
n a
nd the depth-web is 0.8 m with six worki
ng cycles per day, a
nd the adva
nce of worki
ng cycles is 4.8 m per day a
nd 144 m per mo
nth. Mai
n roadway makes use of belt co
nveyor to tra
nsport coal resource, a
nd battery locomotive to be assista
nt tra
nsport. The mai
n shaft uses double 16 t skips to lift coal with a bala
nce hammer a
nd the auxiliary shaft uses a twi
ns wide 1.5t four-car double-deck cage to lift material a
nd perso
n
nel tra
nsportatio
n. Special sectio
n e
ntitled 《Rapid Co
nstructio
n of Rock situatio
n a
nd support tre
nds》;, after the access to large amou
nts of data a
nd a
nalysis of field applicatio
n at home a
nd abroad, the developme
nt of rapid excavatio
n tech
niques that sustai
ned eco
nomic growth i
n coal mi
nes has a very large sig
nifica
nce. Tra
nslatio
n of part of the topic 《Effects of freque
ncy a
nd grouted le
ngth o
n the behavior of guided ultraso
nic waves i
n rock bolts》, Experime
ntal results show that the guided wave atte
nuatio
n i
n the A
nchorage a
nd the group velocity with freque
ncy, a
nd the a
nchorage le
ngth cha
nges. Keywordsguqiao coal mi
ne; vertical shaft si
ngle-level; ba
nd mode; large mi
ni
ng height; ce
ntral bou
ndary ve
ntilatio
n; Rapid Co
nstructio
n; Support; 目录 1井田概述及地质特征1 1.1井田概述1 1.1.1井田地理位置及范围1 1.1.2矿区气候与气象1 1.1.3地形与河流2 1.1.4地震2 1.1.5外部建设条件2 1.2井田地质特征3 1.2.1地层3 1.2.2构造3 1.2.3煤系及煤层4 1.2.4水文地质4 1.2.5其它开采技术条件5 1.3煤层特征5 1.3.1煤层埋藏条件5 1.3.2可采煤层及其围岩特征6 1.3.3煤的特征7 2井田境界与储量10 2.1井田境界10 2.1.1井田范围10 2.1.2开采界限10 2.1.3井田尺寸10 2.2井田地质勘探10 2.3矿井地质储量10 2.3.1地质资源储量10 2.3.2工业资源储量13 2. 4矿井可采储量13 2. 4.1安全煤柱留设原则13 2. 4.2矿井永久保护煤柱损失量14 3矿井工作制度、设计生产能力及服务年限17 3.1矿井工作制度17 3.2矿井设计生产能力及服务年限17 3.2.1矿井设计生产能力确定依据17 3.2.2矿井设计生产能力的确定17 3.2.3矿井服务年限18 3.2.4井型校核18 4井田开拓19 4.1矿井开拓的基本问题19 4.1.1井筒形式，数目，位置及坐标确定19 4.1.2阶段划分和开采水平设置21 4.1.3阶段和开采水平参数21 4.1.4工业广场位置、形状及面积确定22 4.1.5主要开拓巷道23 4.1.6开拓延伸方案23 4.1.7确定开拓方案23 4.2矿井基本巷道33 4.2.1井筒33 4.2.2井底车场及硐室37 4.2.3主要开拓巷道39 5准备方式——带区巷道布置44 5.1煤层地质特征44 5.1.1带区位置44 5.1.2带区煤层特征44 5.1.3主要可采煤层顶底板岩石力学特征44 5.1.4水文地质44 5.1.5地质构造44 5.1.6瓦斯45 5.1.7地温45 5.1.8地表情况45 5.2带区巷道布置及生产系统45 5.2.1带区准备方式的确定45 5.2.2带区巷道布置46 5.2.3带区生产系统46 5.2.4带区内巷道掘进方法47 5.2.5带区生产能力及采出率47 5.3带区车场选型设计48 5.3.1带区车场的形式48 5.3.2带区车场的调车方式49 5.3.3带区主要硐室布置49 6采煤方法50 6.1采煤工艺方式50 6.1.1带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51 6.1.4回采工作面采煤机、刮板输送机选型51 6.1.5采煤工作面支护方式53 6.1.6端头支护及超前支护方式56 6.1.7各工艺过程注意事项57 6.2回采巷道布置60 6.2.1回采巷道布置方式60 6.2.2回采巷道参数60 7井下运输66 7.1概述66 7.1.1矿井设计生产能力及工作制度66 7.1.2煤层及煤质66 7.1.3运输距离和运输设计66 7.1.4矿井运输系统67 7.2带区运输设备选择68 7.2.1设备选型原则： 68 7.2.2带区设备的选型68 7.2.3带区运输能力验算70 7.3大巷运输设备选择70 8矿井提升72 8.1矿井提升概述72 8.2主井提升72 8.2.1箕斗72 8.2.2提升机72 8.2.3钢丝绳技术特征73 8.2.4提升能力验算73 8.3副井提升74 9矿井通风及安全77 9.1矿井通风系统的选择77 9.1.1矿井通风系统的基本要求77 9.1.2矿井通风系统的确定77 9.1.3采区通风系统的确定79 9.2矿井风量计算79 9.2.1通风容易时期和通风困难时期采煤方案的确定79 9.2.2各用风地点的用风量和矿井总用风量83 9.2.3风量分配及风速验算86 9.2.4通风构筑物87 9.3矿井通风阻力计算87 9.3.1计算原则87 9.3.2矿井最大阻力路线88 9.3.3矿井通风阻力计算88 9.3.4矿井通风总阻力89 9.3.5矿井总风阻及总等积孔90 9.4选择矿井通风设备90 9.4.1选择主要通风机的基本原则90 9.4.2通风机风压的确定91 9.4.3主要通风机的选择及风机性能曲线93 9.4.4电动机选型95 9.6安全灾害的预防措施95 9.6.1预防瓦斯和煤尘爆炸的措施95 9.6.2预防井下火灾的措施96 9.6.3防水措施96 10矿井基本技术经济指标97 参考文献98 致谢99