许疃煤矿2.4Mta新井设计【专题边角煤开采技术分析】.pdf

1、 摘 要 本设计包括三个部分：一般部分、专题部分和翻译部分。一般部分针对许疃矿井进行了井型为 2.4Mt/a 的新井设计。许疃矿井位于安徽省宿州市境内，井田走向长 1013km，倾向长 37km，面积约 20km2。主采煤层为 72和 82煤层，平均倾角 816，平均厚度 4m 和 9m。井田工业储量为 394.19Mt，可采储量 286.77Mt，矿井服务年限为 85.35a。矿井正常涌水量为 550m3/h，最大涌水量为 650m3/h；矿井相对瓦斯涌出量为 22m3/t，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，整个井田共划分为五个带区，两个采区，轨道大巷、胶带大巷和回

2、风大巷皆为岩石大巷，布置在 82煤层底板岩层中。矿井通风方式采用中央并列式通风，考虑到本矿井为高瓦斯矿井，后期在井田北翼布置一个边界回风井。针对西二带区采用了带区准备方式，共划分 11 个分带工作面，工作面设计长度 210m，并进行了运煤、通风、运料、排矸、供电系统设计。针对 72101 工作面进行了采煤工艺设计。该工作面煤层平均厚度为 4.0m，平均倾角8，直接顶为泥岩，老顶为细砂岩。工作面采用长壁综采一次采全高采煤法。矿井年工作日为 330d，昼夜净提升时间为 16h。矿井采用“三八”制工作制度，两班生产，一班检修。生产班每班完成 3 个采煤循环，检修班完成 1 个采煤循环。循环进尺为 0

3、.8m，日产量为 6747.86t。矿井煤炭采用胶带输送机运输，辅助运输采用蓄电池式电机车牵引固定箱式矿车。主井采用两对 12t 底卸式箕斗提煤，副井采用一对 1.5t 矿车双层四车加宽罐笼运送物料和升降人员。专题部分题目为边角煤开采技术分析，本研究通过对采区边角煤开采现状分析，结合工作面地质条件，根据开采后残留的边角煤块段形状，探索了旋转开采、台阶开采、梯形开采、带采煤柱开采、房柱式开采等有针对性的边角煤开采方案，从而形成了边角煤开采的块段布置模式。翻译部分题目为Analysis on rock burst danger when fully-mechanized caving coal f

4、ace passed fault with deep mining，主要介绍了深部开采时，综放工作面过断层期间冲击地压危险分析。关键词：关键词：许疃矿井；立井；两水平；带区布置；综采大采高；中央并列式通风 ABSTRACT This design includes three parts:the general design,the monographic study and the translation.The general design is about a 2.40 Mt/a new underground mine design of Xutuan coal mine.Xutuan

5、 coal mine is located in Suzhou,Anhui province.Its about 1013 km on the strike and 37 km on the dip,with the 20.0 km2 total horizontal area.The minable coal seam is 72 and 82with an average thickness of 4.0 m and 9.0m as well as an average dip of 8 16.The proved reserves of this coal mine are 394.19

6、 Mt and the minable reserves are 286.77 Mt,with a mine life of 85.35 a.The normal mine inflow is 550 m3/h and the maximum mine inflow is 650 m3/h.The mine gas emission rate is 22.0 m3/t which can be recognized as high gas mine.Based on the geological condition of the mine,this design uses a vertical

7、 shaft single-level development method,which divided into five strip districts and two mining district,and track roadway,belt conveyor roadway and return airway are all rock roadways,arranged in the floor rock of 82 coal seam.,The mine ventilation method use centralized juxtapose ventilation,and tak

8、ing into account of the high gas emission,in the later period,a boundary diagonal ventilation is added.The design applies strip preparation against the strip of West Two which divided into 11 strips totally,and conducted coal conveyance,ventilation,gangue conveyance and electricity designing.The des

9、ign conducted coal mining technology design against the 72101 face.The coal seam average thickness of this working face is 4.0 m and the average dip is 8,the immediate roof is mud stone and the main roof is sand stone.The working face applies fully mechanized longwall full-height coal caving method.

10、The working days in one year are 330.Everyday it takes 16 hours in lifting the coal.Three-Eight working system with two teams mining and one team overhauling has been used in this design.Every mining team makes three working cycle,and the overhauling team makes one working cycle.The advance of a wor

11、king cycle is 0.8 m,and the quantity of 6747.86 ton coal is produced every day.Main roadway makes use of belt conveyor to transport coal resource,and mine car to be assistant transport.The main shaft uses two double 12 t skips to lift coal and the auxiliary shaft uses a twins wide 1.5 t four-car dou

12、ble-deck cage to lift material and personnel transportation.The monographic study entitled Analysis on the Mining Method of the Boundary Coalpillar,the study analyses the mining status of the working face,combining the mining geological conditions,according to the shape of residual part of the bound

13、ary coalpillar,exploring the rotating mining,steps mining,trapezoid mining,belt coal pillar mining,room and pillar mining,which were applied to the mining method of the boundary coalpillar,thus forming a section layout pattern of the boundary coalpillar.The title of the translated academic paper is

14、Analysis on rock burst danger when fully-mechanized caving coal face passed fault with deep mining.Keywords:Xutuan coal mine;vertical shaft;two mining levels;strip district;full-height coal caving;centralized juxtapose ventilation 1 矿区概述及井田地质特征1.1 矿区概述1.1.1 地理位置地理位置许疃矿位于安徽省宿州市西南部，地处蒙城县板桥镇境内。其地理坐标为东经

15、1164011645，北纬 33213326。井田中心位置距东北方向的宿州市约 37km，距西南方向的蒙城县约 28km。井田东部有宿州至蒙城公路；京沪铁路、青阜铁路及京九铁路分别在井田外东、西部通过，青芦支线联接青阜铁路，井田距青芦支线上的任庄站 9.3km。自京沪线宿县车站至各城市的距离为：徐州 75km，北京 886km，南京 271km，上海 574km。矿井交通位置见图 1-1。图 1-1 矿井交通位置图 1.1.2 地形地形、地貌、地貌 井田内地势平坦，北部略高于南部，海拔标高在+24.5+26.5m 之间，一般为+25.5m左右。1.1.3 交通条件交通条件 本井田位于淮北平原，

16、地形平坦，矿区铁路专用线青芦支线在井田北约 9km 通过，本矿井铁路专用线在该支线的任庄站接轨，专用线长度 9.3km 已投入运营。宿（州）蒙许疃矿许疃矿许疃矿井 京 沪 铁路江 苏 省徐州市陇 海 铁 路夹河寨孟庄矿朔里矿石台矿岱河矿相王庄矿杨庄矿前岭狂朱仙庄矿芦岭矿骑路孙矿邹庄矿桃园矿祁南矿祁东矿邹庄矿任楼矿界沟矿五沟矿童亭矿临涣矿（城）公路在井田的东部边界外通过，许（疃）赵（集）公路与其相连，本矿井进场公路接自许（疃）赵（集）公路，长度 2.2km。故本矿井的交通运输较方便。1.1.4 气候、地震气候、地震本区属季风暖温带半湿润气候，春秋季多东北风，夏季多东东南风，冬季多北西北风。年平均风速 3m/s，最大风速可达 18m/s。年平均气温 14.7，一月份最低可达-23.2，7 月份最热可达 41。年平均降雨量为 750910mm，雨量集中在 7、8 两个月。无霜期208220 天，冻结期一般在 12 月上旬至次年的 2 月中旬。根据安徽省地震局资料，本区历史上未发生过大的地震。按照建筑抗震设计规范（GB500112001）附录 A我国主要城镇抗震设防烈度设计基本地震加速度和设计