祁东煤矿3.0Mta新井设计【专题深部巷道支护技术研究】.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。一般部分为祁东煤矿 3.0 Mt/a 新井设计。一般部分共包括 10 章：1.矿区概述及井田地质特征；2.井田境界与储量；3.矿井工作制度、设计生产能力及服务年限；4.井田开拓；5.准备方式-采区巷道布置；6.采煤方法；7.井下运输；8.矿井提升；9.矿井通风与安全；10.矿井基本技术经济指标。祁东矿位于安徽省宿州市埇桥区祁县镇、西寺坡镇和固镇县湖沟区境内，井田中心距宿州市约 20km，交通便利。井田形状近似长方形，东西长约 4.5 km，南北宽约 1.4 km，面积约 24 km2。井田内开采 61和 71煤层，先采 61。煤层倾角

2、9.0513.8，平均 12.1。两煤层平均厚度均为 7.0 m。井田地质条件较为简单。矿井工业储量为 488.397Mt，可采储量为 297.74Mt。矿井设计生产能力为 3.0Mt/a。矿井服务年限 70.89 a。矿井涌水量不大，正常涌水量为 440 m3/h，最大涌水量为 630 m3/h。煤层相对瓦斯涌出量为 10m3/t，属高瓦斯煤层。煤层自燃倾向等级为三类不易自燃；除无烟煤与天然焦以外，煤尘均具有爆炸危险。矿井采用立井两水平开拓，暗斜井延深，下行开采。一矿一面，采煤方法为综合机械化放顶煤开采。全矿采用胶带运输机运煤，辅助运输采用 1.5 t 固定箱式矿车。矿井通风方式采用两翼对角

3、式。矿井年工作日为 330 d，日净提升时间 16 h，工作制度为“三八制”。专题部分题目是深部巷道支护技术研究。翻译部分是一篇关于低透气性单煤层综合瓦斯抽采技术的论文，英文题目为 Research into Comprehensive Gas Extraction Technology of Single Coal Seams with Low Permeability in the Jiaozuo Coal Mining Area。关键词：关键词：新井设计；放顶煤；两翼对角式 ABSTRACT This design contains three parts:the general par

4、t，the special subject part and the translation.The general part is a new design of the Qidong mine.This part is divided into ten chapters:1.An outline of the mine field geology;2.Boundary and the reserves of mine;3.The service life and working system of mine;4.Development engineering of coalfield;5.

5、The layout of mining area;6.The method used in coal mining;7.Transportation of the underground;8.The lifting of the mine;9.The ventilation and the safety operation of the mine;10.The basic economic and technical norms.The Qidong mine locates at the crosspart of Qixian,Xisipo and Guzhen of Suzhou in

6、Anhui province,20 km away from the center of the town.And the transportation is very convenience.The shape of minefield is like a rectangle which has a length of 4.5 km in the east and west and a width of 1.4 km in the south and north on average.The total plane area of the mine is about 24 km2.There

7、 are two coal seams in the mine NO.61 and NO.71.Mining the NO.61 coal seam firstly.The angle is about 9.0513.8 degree with an average of 12.1 and the thickness of both coal seams is about 7.0 m.The minefield geological condition is simple.The proved reserves of the minefield are 488.397 million tons

8、.The recoverable reserves are 297.74 million tons.The designed productive capacity is 3.0 million tons per year.The service life is 70.89 years.The normal water flow of the mine is 440 m3 per hour and the max water flow is 630 m3 per hour.The Relative gas discharge quantity is 10 m3 per ton,whichmea

9、ns it is a high gaseous mine.The coal seam is hardly spontaneous combustion and the level of spontaneous combustion is.Apart from coal without gas,the coal seam is of high explosion hazard.The development of the mine is double levels with vertical shaft at the first level and inclind shaft at the se

10、cond level.The number of the working faces is only one.The mining method is Comprehensive mechanization with putting off the top coal technology.Several belt conveyers undertake the job of coal transport in the mine and the auxiliary transportation system is centralized juxtapose.The ventilation met

11、hod is diagonal ventilation system.We work 330 days per year and exaltate 16 hours one day.The threeeight working system is applied for coal mining.The title of the special subject part is Study on the Support of Depth Portion tunnel Technique.The translation prat is a paper about gas extraction tec

12、hnology of single coal seam with low permeability.Its title is Research into Comprehensive Gas Extraction Technology of Single Coal Seams with Low Permeability in the Jiaozuo Coal Mining Area.Keywords：design of mine;top-coal caving;diagonal ventilation system 目 录 一一 般般 部部 分分 1 矿区概述及井田地质特征矿区概述及井田地质特征

13、.1 1.1 矿区概述.1 1.1.1 矿区地理位置.1 1.1.2 矿区经济概述.2 1.1.3 矿区气候条件.2 1.1.4 矿区的水文情况.2 1.2 井田地质特征.2 1.2.1 井田地质构造.2 1.2.2 井田勘探概述.2 1.2.3 井田地层.3 1.2.4 水文地质特征.3 1.3 煤层特征.9 1.3.1 每层埋藏条件.9 1.3.2 每层群层数及围岩性质.9 1.3.3 煤质特征.9 1.3.4 瓦期、煤尘、自燃发火及地温.10 1.3.5 工业用途.10 2 井田境界与储量井田境界与储量.11 2.1 井田境界.11 2.1.1 井田范围确定依据.11 2.1.2 井田范

14、围.11 2.1.3 开采界限.11 2.1.4 井田尺寸.11 2.2 矿井工业储量.12 2.2.1 储量计算基础.12 2.2.2 井田地质勘探.12 2.2.3 工业指标的确定.12 2.2.3 工业储量计算.13 2.3 矿井可采储量.16 2.3.1 安全煤柱留设原则.16 2.3.2 矿井永久保护煤柱损失量.16 2.3.3 矿井可采储量.18 3 矿井工作制度、设计生产能力及服务年限矿井工作制度、设计生产能力及服务年限.20 3.1 矿井工作制度.20 3.2 矿井设计生产能力及服务年限.20 3.2.1 确定依据.20 3.2.2 矿井设计生产能力.20 3.2.3 矿井服务

15、年限.20 3.2.4 井型校核.21 4 井田开拓井田开拓.22 4.1 井田开拓的基本问题.22 4.1.1 井筒形式的确定.22 4.1.2 工业场地的位置.24 4.1.3 开采水平的确定.24 4.1.4 矿井开拓方案比较.24 4.2 矿井基本巷道.33 4.2.1 井筒.33 4.2.2 开拓巷道.33 4.2.3 井底车场及硐室.33 5 准备方式准备方式采区巷道布置采区巷道布置.43 5.1 煤层地质特征.43 5.1.1 采区位置.43 5.1.2 采区煤层特征.43 5.1.3 煤层顶底板岩石构造情况.43 5.1.4 水文地质.43 5.1.5 地质构造.43 5.1.

16、6 地表情况.43 5.2 采区巷道布置及生产系统.43 5.2.1 采区位置及尺寸.43 5.2.2 采煤方法及工作面长度的确定.43 5.2.3 确定采区回采巷道的尺寸、支护方式及通风方式.44 5.2.4 煤柱尺寸的确定.45 5.2.5 采区生产系统.45 5.2.6 采区内巷道掘进方法.45 5.2.7 采区生产能力及采出率.45 5.3 采区车场选型设计.48 5.3.1 确定车场形式.48 5.3.2 采区主要硐室布置.49 6 采煤方法采煤方法.50 6.1 采煤工艺方式.50 6.1.1 采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 回采工作面参数的确定.51 6.1.4 回采工作面破煤、装煤方式.52 6.1.5 回采工作面运煤方式.53 6.1.6 回采工作面支护方式.53 6.1.7 采放比、放煤步距、放煤方式.55 6.1.8 各工艺过程注意事项.56 6.2 劳动组织和工作面成本.57 6.2.1 劳动组织.57 6.2.2 工作面吨煤成本.57 6.3 回采巷道布置.59 6.3.1 回采巷道布置方式.59 6.3.2 回采