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19 km2。主采煤层为8号煤层，平均倾角为18，平均厚度为9.0 m。井田工业储量为191.87 Mt，可采储量为111.03 Mt，矿井服务年限为56.9 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，暗斜

2、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：立井两水平开拓上山开采，暗斜井延深；方案四：立井两水平开拓上山开采，新混合井延深。通过技术经济比较，最终确定方案三为最优方案。一水平标高-650 m，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“三八制”。大巷采用胶带输送机运煤，辅助运输采用矿车运输。矿井通风方式为中央并列式。专题部分题目：浅析深井沿空留巷支护理论与技术。深井沿空留巷是提高采出率、煤层群卸压开采，进而实施煤与瓦斯共采的关键技术。要经历两次工作面采动影响，加之深部巷道围岩变形具

3、有高地压、大变形和长期蠕变的特点，巷道维护较浅部沿空留巷更加困难。本文以淮南顾桥煤矿深井沿空留巷为工程背景，运用FLAC3D数值模拟和现场实测相结合的手段对工程实践中经常遇到的厚直接顶、薄直接顶和无直接顶三种沿空留巷类型进行研究，提出相应的支护方案。翻译部分题目：Numerical simulation of rock burst in circular tunnels under unloading conditions。圆形隧道在卸压过程中发生岩爆的数值模拟。关键词： 立井； 暗斜井； 采区布置； 放顶煤采煤法； 中央并列式； 沿空留巷ABSTRACTThis design can be

4、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 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 Sui

5、fu 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 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 M

6、t and the minable reserves are 111.03 Mt, with a mine life of 56.9 a. The normal mine inflow is 250 m3/h and the maximum mine inflow 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 availab

7、le projects in technology.The first is vertical shaft development with two mining levels and the first level at -650m and the second level at -850m and extension of blind inclined shaft; the second is vertical shaft development with two mining levels and the first level at -650m and the second level

8、 at -850m and extension of vertical shaft; the third is vertical shaft development with two mining levels and the first level at -650m 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 -650m and

9、the second level at -1000m and extension of new vertical shaft. The third project is the best comparing with other three projects in technology and economy.The first level is at -650 m.The second level is at -1000 m.Designed first mining district makes use of the method of the mining district prepar

10、ation.The length of working face is 200 m, which uses fully-mechanized coal caving 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

11、 is center ventilation.The monographic study is a brief analysis of law and tecenolgy of rodway supporting of gob-side entry rataining.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

12、deformation and long-term creep of the deep roadway, its more difficult to roadway maintenance.The paper is based on the deep gob-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 thi

13、n roof and no roof by using numerical simulation and applying field test, and proposes corresponding support scheme.The translated academic paper is Numerical simulation of rock burst in circular tunnels under unloading conditions.Keywords: Vertical shaft; Blind inclined shaft; Mining district prepa

14、ration; Coal caving mining ; Center ventilation; Gob-side entry rataining 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31.2.1地层31.2.2井田地质构造51.2.3水文地质条件61.3煤层特征81.3.1煤层81.3.2煤层顶底板91.3.3煤质及工业用途101.3.4瓦斯111.3.5煤尘121.3.

15、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162.3.1安全煤柱留设原则162.3.2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阶段划分及开采水平的确定234.1.4主要开拓巷道234.1.5矿井开拓延深234.1.6方案比较234.2矿井基本巷道294.2.1井筒294.2.2井底车场及硐室294.2.3主要开拓巷道375 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