摘 要

本次开采设计的任务主要是为宜昌保康（远安县至兴山县一带）神农架磷矿田280万t/a地下开采进行设计。本次设计主要分为9个部分，包括矿田地质概况、生产能力、开拓方法、采矿方法、运输方式、提升方法、井下车场设计、排水、通风和供电方面的内容。

本次设计的矿体范围为Ph₂磷矿层（主要工业矿层）和Ph₁³磷矿层（次要工业矿层）两种矿体，设计开采矿体的平均厚度为8.67m，平均倾角为10°，矿岩稳固性一般，地表不允许塌陷。根据矿体的赋存条件和矿山基本地质资料，本矿区矿床采用斜井 斜坡道联合开拓的方式，斜坡道主要用于各中段之间联络，用来运输人员、材料、设备等。为了更好的地压管理以及提高矿石的回采率，采用上向水平分层充填采矿法开采磷矿体，矿房回采后采用全尾砂胶结充填，采场中采用铲运机出矿。矿井通风系统采用统一通风，通风方式为中央对角式通风，新鲜风流以压入式方式由副斜井井口进入，清洗工作面后，污风以抽出式方式由东西两翼的回风斜井抽出地表。

关键字：矿田开采、矿床开拓；矿井提升；

Abstract

The task of this mining design is mainly to design 2.8 million t/a underground mining of Shennongjia phosphate field in Yichang Baokang (from Yuanan County to Xingshan County). This design is mainly divided into 9 parts, including the geological survey, production capacity, development methods, mining methods, transportation methods, lifting methods, underground depot design, drainage, ventilation and power supply.The scope of this design is mainly for the medium phosphorus orebody, the length of the orebody is about 4900m, the dip width is about 3200m, the dip angle is 10 °, and the geological structure is relatively complex.

The scope of the ore body designed for this time is Ph₂ phosphate rock layer (main industrial ore layer) and Ph₁³ phosphate rock layer (secondary industrial ore layer). The average thickness of the ore body designed for mining is 8.67m, the average inclination angle is 10, the stability of ore rock is general, and the surface is not allowed to collapse. According to the occurrence conditions of the ore body and the basic geological data of the mine, the deposit in this mining area adopts the joint development method of inclined shaft and ramp, which is mainly used for communication between the middle sections and for transporting personnel, materials, equipment, etc. In order to better manage the ground pressure and improve the recovery rate of the ore, the upward horizontal slicing and filling mining method is adopted to mine the phosphate rock body. The mining room is first followed by the mining pillar. After the mining is completed, the whole tailings cementing filling is adopted, and the scraper is used to mine the ore in the stope. The mine ventilation system adopts unified ventilation. The ventilation mode is central diagonal ventilation. Fresh air flow enters from the wellhead of the auxiliary inclined shaft in a press-in mode. After the working face is cleaned, the dirty air is pumped out from the return inclined shafts on the east and west wings in an extraction mode.

Keywords: ore field mining, deposit development; mine lifting;

目录

1 绪论 2

1.1指导思想 2

1.2基本要求 2

1.3设计依据 3

2 地质概述 4

2.1矿区位置及交通情况 4

2.2水文地质情况 5

2.3地质概况 6

3 生产能力 8

3.1工作制度 8

3.2生产能力 8

3.2.1年开采降速验证 8

3.2.2服务年限验证 9

4 矿床开拓 11

4.1开采范围 11

4.2岩石错动界限 11

4.3保安矿柱圈定 12

4.4矿床开拓 12

4.4.1方案选择 12

4.4.2开采阶段高度确定 13

4.4.3开拓方案简述 14

4.5阶段及矿块开采顺序 17

4.6三级矿量 17

5 采矿方法 20

5.1矿床地质及开采技术条件 20

5.1.1矿岩稳固性分析 20

5.1.2 矿岩物理力学性质 20

5.1.3 矿体特性分析 21

5.1.4 矿石特性分析 21

5.1.5 矿床工业指标 22

5.1.6地表陷落允许 23

5.1.7 工业储量 23

5.2 采矿方法选择 23

5.3采矿方法叙述 24

5.3.1 采矿方法构成要素 24

5.3.2 采准切割工作 25

5.3.3 采切工程量 25

5.3.4 回采工作 27

5.3.5 班制产量 27

6 运输方式 29

6.1运输方式 29

6.2中段运输巷道 29

6.3运输设备及列车组成计算 29

6.3.1运输设备简述 29

6.3.2列车组成量 30

7井底车场设计 32

7.1主要结构 32

7.2布置形式 32

7.3设计简述 32

7.4硐室 33

8 提升方法 34

8.1井下提升系统 34

8.2提升设备选型 34

8.3斜井提升计算 34

9 排水供电 39

9.1排水 39

9.1.1排水方式 39

9.1.2排水设备 39

9.1.3水泵房 39

9.2供电 40

9.2.1电压 40

9.2.2提升系统 40

9.2.3采区供电 40

9.2.4通风系统 40

10通风 41

10.1设计原则 41

10.2方案选择 41

10.3全矿总风量计算 41

10.4设计简述 45

10.4.1网路布置 45

10.4.2通风构筑物 45

10.5通风阻力计算 46

10.6通风设备选型 47

10.6.1自然风压计算 47

10.6.2主扇风量计算 50

10.6.3扇风机选择 51

致谢 53

参考文献 54

1 绪论

1.1指导思想

本次设计的指导思想是以经济、安全、高效、可持续发展的理念，进行矿山的初步设计，本着以达到绿色矿山的目的进行开采，从而能够充分合理的利用地下矿产资源，减少开采过程矿产资源的浪费。

对于本次设计，应该遵循以下基本的原则：