钱营孜矿1.5Mta新井设计.docx

1、摘 要一般部分针对钱营孜矿井进行了井型为1.5Mt/a的新井设计。钱营孜矿井位于安徽省宿州市境内，井田走向长约7.0km，倾向长约5.3km，面积约37.1km2。主采煤层为32煤层，平均倾角1215，平均厚度2.89m。井田工业储量为216.6Mt，可采储量161.0Mt，矿井服务年限为71.6a。矿井正常涌水量为434m3/h，最大涌水量为885m3/h。矿井相对瓦斯涌出量为2.5m3/t，绝对瓦斯量10 m3/min，属低瓦斯矿井。根据井田地质条件，设计采用立井两水平开拓方式，主井暗斜井延深，副井、中央风井立井直接延深，轨道大巷、胶带机运输大巷和回风大巷皆为岩石大巷，布置在32煤层底板岩

2、层中。一水平标高-480 m，二水平标高-700 m。西二采区采用了采区准备方式，共划分为五个工作面，并进行了运煤、通风、运料、排矸、供电系统设计。针对32202工作面进行了采煤工艺设计。该工作面煤层平均厚度为2.89 m，平均倾角12.6，直接顶为的砂质泥岩，老顶为细砂岩。工作面采用长壁综采一次采全高采煤法。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，每天八个循环，循环进尺6.4m，月推进度192 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1.0 t矿车双层四车窄罐笼和一个带平

3、衡锤的1.0 t矿车双层四车宽罐笼运料和升降人员。专题部分题目是岩层控制的柔性关键层理论, 通过分析上覆岩层的破断规律，定义了柔性关键层，分析出了柔性关键层对关键层复合破断和矿压显现的影响。翻译部分题目是Effects of Bolt-plate Arrangements on Steel Plate Strengthened Reinforced Concrete Beams。关键词：钱营孜矿；立井开拓；暗斜井；采区布置；中央并列式；柔性关键层ABSTRACTThe general design is about a 1.50 Mt/a new underground mine design

4、 of Qianyingzi coal mine. Qianyingzi coal mine is located in Suzhou, Anhui province. Its about 7.0 km on the strike and 5.3 km on the dip, with the 37.1 km2 total horizontal area. The minable coal seam is 32with an average thickness of 2.89 m and an average dip of 1215. The proved reserves of this c

5、oal mine are 216.6 Mt and the minable reserves are 161.0 Mt, with a mine life of 71.6 a. The normal mine inflow is 434 m3/h and the maximum mine inflow is 885 m3/h. The mine gas emission rate is 2.5 m3/t and 10 m3/min which can be recognized as low gas mine. Based on the geological condition of the

6、mine, this design uses a vertical shaft two-level development method. The extension of the main shaft is blind inclined shaft and the extension of auxiliary shaft and central ventilation shaft is vertical shaft. Track roadway, belt conveyor roadway and return airway are all rock main roadways, arran

7、ged in the floor rock of 32 coal seam. The first level is at -480 m. The second level is at -700 m.The design applies district preparation against the first district of West Two which divided into five longwall faces totally, and conducted coal conveyance, ventilation, gangue conveyance and electric

8、ity designing.The design conducted coal mining technology design against the 32202 face. The coal seam average thickness of this working face is 2.89 m and the average dip is 12.6, the immediate roof is mud stone and the main roof is sand stone. The working face applies fully mechanized longwall ful

9、l-height coal caving method, and uses double drum shearer cutting coal which cuts twice each working cycle. Three-Eight working system has been used in this design and the depth-web is 0.8 m with eight working cycles per day, and the advance of a working cycle is 6.4 m and the advance is 192 m per m

10、onth.Main roadway makes use of belt conveyor to transport coal resource, and battery locomotive to be assistant transport. The main shaft uses double 16 t skips to lift coal with a balance hammer and the auxiliary shaft uses a double narrow1.0 t four-car double-deck cage and a wide 1.0 t four-car do

11、uble-deck cage to lift material and miners.The monographic study entitled The Flexible Dominant Stratum Theory of Strata Control . By analyzing the breaking law of overburden, the flexible dominant stratum is defined. The paper has analyzed the effects of the flexible key layer on the dominant strat

12、um composite breaking and the pressure behavior of mine.The title of the translated academic paper is Effects of Bolt-plate Arrangements on Steel Plate Strengthened Reinforced Concrete Beams .Keywords: Qianyingzi coal mine; Vertical shaft development; Blind inclined shaft; Mining district preparatio

13、n; The central paratactic type; The flexible dominant stratum目 录1 矿区概述及井田地质特征11.1矿区概述11.1.1井田位置和交通11.1.2井田自然地理、经济状况21.2井田地质21.2.1井田地层21.2.2井田构造51.2.3水文地质51.3煤层特征71.3.1可采煤层71.3.2煤质71.4煤层开采技术条件81.4.1煤的自燃81.4.2松散土层工程地质特征91.4.3矿床工程地质类型91.4.5瓦斯情况91.4.6 井下热害92 井田境界与储量102.1井田境界102.2矿井地质储量102.2.1储量计算基础102.2

14、.2矿井地质储量112.2.3矿井工业储量112.3 矿井可采储量122.3.1井田边界保护煤柱122.3.2工业广场煤柱122.3.3断层保护煤柱132.3.4大巷保护煤柱132.3.5矿井可采储量133 矿井工作制度、设计生产能力及服务年限153.1矿井工作制度153.2矿井设计生产能力及服务年限153.2.1确定依据153.2.2矿井设计生产能力153.2.3矿井服务年限153.2.4井型校核164 井田开拓174.1井田开拓的基本问题174.1.1确定井筒形式、数目、位置174.1.2阶段划分和开采水平的确定194.1.3主要开拓巷道194.1.4开拓方案比较204.2矿井基本巷道27

15、4.2.1井筒274.2.2井底车场及硐室274.2.3大巷294.2.4巷道支护375 准备方式采区巷道布置385.1煤层地质特征385.1.1采区位置385.1.2采区煤层特征385.1.3煤层顶底板岩石构造情况385.1.4水文地质385.1.5主要地质构造385.1.6地表情况385.2采区巷道布置及生产系统405.2.1采区范围及区段划分405.2.2煤柱尺寸的确定405.2.3采煤方法及首采工作面工作面长度的确定405.2.4确定采区各种巷道的尺寸、支护方式405.2.5采区巷道的联络方式405.2.6采区接替顺序405.2.7采区生产系统415.2.8采区内巷道掘进方法425.2.9采区生产能力及采出率425.3采区车场选型设计436 采煤方法456.1采煤工艺方式456.1.1采区煤层特征及地质条件456.1.2确定采煤工艺方式456.1.3回采工作面参数456.1.4回采工艺及设备456.1.5回采工作面支护方式486.1.6端头支护及超前支护方式506.1.7各工艺过程注意事项516.1.8回采工作面正规循环作业526.2回采巷道布置556.2.