涡北煤矿1.5Mta新井设计【专题薄基岩浅埋煤层采场顶板运动规律研究】.doc

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。井田走向南北长度约6 km，东西宽约3.2 km，面积约19 km2。主采煤层为8号煤层，平均倾角为20，平均厚度为8.2 m。井田工业储量为172.09Mt，可采储量为109.73 Mt，矿井服务年限为56.3 a。矿井正常涌水量为260 m3/h，最大涌水量为280 m3/h。矿井瓦斯相对涌出量为0.81 m3/t，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，暗斜井延深；方案二：

2、立井两水平开拓，立井直接延深；方案三，立井三水平开拓，暗斜井延伸；方案四：立井三水平开拓，暗立井延伸。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-700m，二水平标高-1000 m。设计首采区采用采区准备方式，工作面长度200 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“四六制”。大巷采用胶带输送机运煤，辅助运输采用矿车运输。专题部分题目：薄基岩浅埋煤层采场顶板运动规律研究。全面系统的进行浅埋煤层覆岩运动规律研究与应用是目前巫待解决的问题。针对本区矿压显现的特殊问题，本文综合运用理论研究、现场实测的方法，初步分析了采场上覆松散层载荷确定及传递规律，按照基岩厚度不

3、同提出了不同的开采方法和支护设计关键词:薄基岩；浅埋煤层；载荷传递；采煤方法；支护设计翻译部分题目：A method for the design of longwall gateroad roof support（长臂开采工作面回采巷道顶板支护的设计方法）关键词：煤矿；顶板控制；支护设计ABSTRACTThis design can be divided into three sections: general design, monographic study and translation of an academic paper.The general design is about

4、a 1.50 Mt/a new underground mine design of Wobei coal mine.Wobei coal mine lies in Hozhou 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, wit

5、h the 19 km2 total horizontal area.The minable coal seam is 8 with an average thickness of 9.0 m and an average dip of 18.The proved reserves of this coal mine are 191.87 Mt and the minable reserves are 111.03 Mt, with a mine life of 56.3a. The normal mine inflow is 260 m3/h and the maximum mine inf

6、low is 280 m3/h. The mine gas emission rate is 21.33 m3/min, the mine 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 first level at -700m and the sec

7、ond level at -1000m and extension of blind inclined shaft; the second is vertical shaft development with two mining levels and the first level at -700m and the second level at -1000m and extension of vertical shaft; the third is vertical shaft development with two mining levels and the first level a

8、t -700m and the second level at -1000m and extension of blind inclined shaft; the last is vertical shaft development with two mining levels and the first level at -700m and the second level at -1000m and extension of new vertical shaft. The third project is the best comparing with other three projec

9、ts in technology and economy.The first level is at -700 m.The second level is at -1000 m.Designed first mining district makes use of the method of the mining district preparation.The length of working face is 200 m, which uses fully-mechanized coal caving mining method. The working system is “four-s

10、ix” 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 center ventilation.The monographic study is a brief analysis of law and tecenolgy of rodway supporting of gob-side entry ratai

11、ning.Gob-side entry rataining is the key technology of unlonding stress and coal and gas mining at the same time. Because of twice mining influence, high press and large deformation and long-term creep of the deep roadway, its more difficult to roadway maintenance.The paper is based on the deep gob-

12、side entry retaining of Guqiao coalmine in Huaibei mining area. And it researches on the laws of stress evolution and failure mechanism of roadway with thick roof and thin roof and no roof by using numerical simulation and applying field test, and proposes corresponding support scheme.The translated

13、 academic paper is Numerical simulation of rock burst in circular tunnels under unloading conditions.Keywords: Vertical shaft; Blind inclined shaft; Mining district preparation; Coal caving mining ; Center ventilation; Gob-side entry retaining目 录1 矿区概述及井田地质特征11.1 矿区概述11.2 井田地质特征31.3 煤层特征62 井田境界及储量14

14、2.1 井田境界142.2 矿井工业储量162.2.1工业资源/储量172.2.2 矿井可采/资源储量173 矿井工作制度、设计生产能力及服务年限223.1 矿井工作制度223.2 矿井设计生产能力及服务年限223.2.1 矿井设计生产能力确定依据223.2.2 矿井设计生产能力223.2.3 矿井服务年限223.2.4 井型校核234 井田开拓244.1 矿井开拓的基本问题244.1.1 井田开拓的基本问题244.1.2 确定井筒形式、数目、位置及坐标244.1.3 工业场地的位置254.1.4 开采水平的确定254.1.5 主要开拓巷道254.1.6 矿井开拓延伸264.1.7 方案比较2

15、64.2 矿井基本巷道344.2.1 井筒344.2.2 井底车场及硐室344.2.3 主要开拓巷道405 准备方式采区巷道布置445.1 煤层地质特征445.1.1 采区位置445.1.2 采区煤层特征445.1.3 煤层顶底板岩石构造情况445.1.4 水文地质445.1.5 主要地质构造445.1.6 地表情况455.2 采区巷道布置及生产系统455.2.1 采区范围及区段划分455.2.2 煤柱尺寸的确定455.2.3 采煤方法及工作面长度的确定455.2.4 确定采区各种巷道的尺寸、支护方式及通风方式455.2.5 采区巷道的联络方式465.2.6 采区接替顺序465.2.7 采区生产系统465.2.8 采区内巷道掘进方法475.2.9 采区生产能力及采出率475.3 采区车场选型设计485.3.1 确定采区车场形式486 采煤方法516.1 采煤工艺方式516.1.1 采区煤层特征及地质条件516.1.2 确定采煤工艺方式516.1.3 回采工作面参数526.1.4 回采工艺及设备526.1.5 回采工作面支护方式566.1.6 端头支护及超前支护方式596.1.7 各工艺过程注意事