涡北煤矿1.5 Mta新井设计.docx

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。一般部分为涡北煤矿1.50 Mt/a新井设计。涡北煤矿位于安徽省亳州市境内，东有京九铁路，西有濉阜铁路，交通便利。井田走向长度约6 km，倾向长度约3.2 km，面积约17.117 km2。主采煤层为8号煤层，平均倾角为18，平均厚度为8.0 m。井田工业储量为159.69 Mt，可采储量为99.32 Mt，矿井服务年限为51 a。矿井正常涌水量为250 m3/h，最大涌水量为280 m3/h。矿井绝对瓦斯涌出量为21.33 m3/min，属于低瓦斯矿井。根据井田地质条件，提出四个技术上可行的开拓方案。方案一：立井两水平开拓上下山开采，暗

2、斜井延深；方案二：立井两水平开拓上下山开采，立井直接延深；方案三：立井三水平开拓上山开采，立井直接延深；方案四：立井三水平开拓上山开采，暗斜井延深。通过技术经济比较，最终确定方案一为最优方案。一水平标高-650 m，二水平标高-850 m。设计首采区采用采区准备方式，工作面长度210 m，采用综采放顶煤采煤法，矿井年工作日为330 d，工作制度为“三八制”。大巷采用胶带输送机运煤，辅助运输采用矿车运输。矿井通风方式为两翼对角式。专题部分题目是浅析锚网支护沿空巷道矿压显现规律，沿空巷道有利于减少“两巷”煤柱损失量，锚网支护是这类巷道的主要支护手段。阐述了沿空巷道上覆岩层结构、围岩应力分布、围岩变

3、形的一般规律。并通过对现场实测数据的整理分析，总结了类似条件下巷道的矿压显现规律，以指导沿空巷道的支护设计。翻译部分题目是长壁采煤法回采巷道三向交叉点的三维有限元分析。关键词：涡北煤矿；立井；暗斜井；采区布置；放顶煤采煤法；两翼对角式；沿空巷道ABSTRACTThis design can be divided into three sections: general design, monographic study and translation of an academic paper.The general design is about a 1.50 Mt/a new undergr

4、ound mine design of Wobei coal mine.Wobei coal mine lies in Bozhou City, Anhui province.As Jingjiu railway runs in the west of the mine field and Suifu railway runs in the east of the mine field, the traffic is convenient.Its about 6 km on the strike and 3.2 km on the dip, with the 17.117 km2 total

5、horizontal area.The minable coal seam is 8 with an average thickness of 8.0 m and an average dip of 18.The proved reserves of this coal mine are 159.69 Mt and the minable reserves are 99.32 Mt, with a mine life of 51 a. The normal mine inflow is 250 m3/h and the maximum mine inflow is 280 m3/h. The

6、mine gas emission rate is 21.33 m3/min which belongs to low gas mine. Based on the geological conditions of the mine, I bring forward four available projects in technology.The first is vertical shaft development with two mining levels and the extension of blind inclined shaft; the second is vertical

7、 shaft development with two mining levels and the extension of vertical shaft; the third is vertical shaft development with three mining levels and the extension of blind inclined shaft; the last is vertical shaft development with three mining levels and the extension of vertical shaft. The first pr

8、oject is the best comparing with other three projects in technology and economy.The first level is at -650 m.The second level is at -850 m.Designed first mining district makes use of the method of the mining district preparation.The length of working face is 210 m, which uses fully-mechanized coal c

9、aving mining method. The working system is “three-eight” which produces 330 d/a.Main roadway makes use of belt conveyor to transport coal resource, and mine car to be assistant transport. The type of mine ventilation system is two wings diagonal ventilation.The monographic study is a brief analysis

10、of behavior law of mine pressure of gob-side entry bolting with wire mesh.Gob-side entry is propitious to reduce the loss of pillar between mining gateways.Bolting with wire mesh is the main support method for roadways like this.This paper has discussed the overlying strata structure of gob-side ent

11、ry and the law of both surrounding rock stress distribution and surrounding rock deformation.By finishing and analysising the data from worksite, summarized the behavior law of mine pressure of gob-side entry with similar geological conditions to direct the support design for gob-side entry.The tran

12、slated academic paper is Finite element analysis of three-way roadway junctions in longwall mining.Keywords: Guobei coal; vertical shaft; blind inclined shaft; mining district preparation; coal caving mining ; two wings diagonal ventilation; gob-side entry 第VII页目 录一般部分1 矿区概述及井田地质特征11.1矿区概述11.1.1地理位置

13、与交通11.1.2地形地貌11.1.3河流及水体11.1.4气候21.1.5自然地震21.1.6矿区内工农业生产、建筑材料等概况21.1.7区域电源21.2井田地质特征21.2.1地层21.2.2井田地质构造51.2.3水文地质条件61.3煤层特征71.3.1煤层71.3.2煤层顶底板91.3.3煤质及工业用途91.3.4瓦斯111.3.5煤尘121.3.6煤的自燃121.3.7地温122 井田境界和储量132.1井田境界132.1.1井田范围132.1.2开采界限132.1.3井田尺寸132.2矿井工业储量142.2.1地质资源储量142.2.2工业资源/储量152.3矿井可采储量152.3

14、.1安全煤柱留设原则152.3.2矿井永久保护煤柱损失量162.3.3矿井可采储量173 矿井工作制度、设计生产能力及服务年限193.1矿井工作制度193.2矿井设计生产能力及服务年限193.2.1确定依据193.2.2矿井设计生产能力193.2.3服务年限193.2.4井型校核204 井田开拓214.1井田开拓的基本问题214.1.1确定井筒形式、数目、位置及坐标214.1.2工业场地的位置224.1.3开采水平的确定224.1.4主要开拓巷道224.1.5矿井开拓延深234.1.6方案比较234.2矿井基本巷道284.2.1井筒284.2.2井底车场及硐室294.2.3主要开拓巷道305

15、准备方式采区巷道布置405.1煤层地质特征405.1.1采区位置405.1.2采区煤层特征405.1.3煤层顶底板岩石构造情况405.1.4水文地质405.1.5主要地质构造405.1.6地表情况405.2采区巷道布置及生产系统415.2.1采区范围及区段划分415.2.2煤柱尺寸的确定415.2.3采煤方法及首采工作面工作面长度的确定415.2.4确定采区各种巷道的尺寸、支护方式415.2.5采区巷道的联络方式415.2.6采区接替顺序425.2.7采区生产系统425.2.8采区内巷道掘进方法425.2.9采区生产能力及采出率455.3采区车场选型设计466 采煤方法476.1采煤工艺方式476.1.1采区煤层特征及地质条件476.1.2确定采煤工艺方式476.1.3回采工作面参数476.1.4回采工艺及设备486.1.5回采工作面支护方式506.1.6端头支护及超前支护方式526.1.7各工艺过程注意事项536.1.8回采工作面正规循环作业546.2回采巷道布置566.