涡北煤矿1.5Mta新井设计【专题浅析预应力中空注浆锚索在沿空留巷中的应用以及发展前景】.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：立井三水平开拓上山开采，暗斜井

2、延深；方案二：立井三水平开拓上山开采，立井直接延深；方案三：立井两水平加辅助水平开拓上山开采，暗斜井延深；方案四：立井两水平加辅助水平开拓上山开采，立井直接延深。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-900 m，辅助水平-1000m。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。专题部分题目为浅析预应力中空注浆锚索在沿空留巷中的应用以及发展前景。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

3、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。然而预应力中空注浆锚索的出现为巷道维护提供了新的可行性安和全性都更好的支护方式和方法。本文以谢桥煤矿沿空留巷为工程背景，简述预应力中空注浆的发展历程以及在沿空留巷中的应用，并指出其在应用过程中出现的问题，并对其在未来的发展趋势做出预测。翻译部分题目：Control of gas emissions in underground coal mines。底板煤层的瓦斯抽放控制ABSTRACTThis design can be divided into three secti

4、ons: 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 Suifu railway runs in the e

5、ast 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 Mt and the minable reserv

6、es 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 available projects in technolog

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

8、lopment with two mining levels. 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 -900 m and the assist level is at -1000.Designed first mining district makes use of the method of the mining district prepar

9、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

10、 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

11、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

12、n roof and no roof by using numerical simulation and applying field test, and proposes corresponding support scheme.The translated academic paper is Control of gas emissions in underground coal mines.目 录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

13、.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121.3.6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19

14、3.1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

15、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476 采煤方法486.1采煤工艺方式486.1.1采区煤层特征及地质条件486.1.2确定采煤工艺方式486.1.3回采工作面参数486.1.4回采工艺及设备496.1.5回采工作面支护方式516.1.6端头支护及超前支护方式536.1.7各工艺过程注意事项546.1.8回采工作面正规循环作业556.2回采巷道布置586.2.1回采巷道布置方式586.2.2回采巷道参数587 井下运输617.1概述617.1.1井下运输设计的原始条件和数据617.1.2运输距离和货载量617.1.3矿井运输系统617.2采区