许疃煤矿1.5Mta新井设计.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。一般部分为许疃煤矿1.5Mt/a新井设计。许疃煤矿位于安徽省宿州市境内，区内交通十分便利。井田走向长6.36.8km，倾斜宽2.143.82km，井田面积22.75km2。井田内可采煤层共有8层，主采煤层为72和82煤。井田内72和82煤倾角均在716之间，72煤平均厚度3.0m，82煤平均厚度9.0m。矿井工业储量为346.42Mt，可采储量为229.25Mt，设计服务年限109.2a。矿井正常涌水量为550m3/h，最大涌水量为660m3/h。矿井相对瓦斯涌出量为12.0m3/t，绝对瓦斯涌出量为37.879m3/min，属高瓦斯矿井

2、。煤层属于有可能自燃发火不自燃发火，煤尘有爆炸危险性。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：立井单水平开拓，中央并列式通风；方案二：立井单水平开拓，两翼对角式通风；方案三：立井两水平开拓，暗斜井延深；方案四：立井两水平开拓，暗立井延深。通过粗略和详细技术经济比较，最终确定方案一为最优方案。水平标高-650m，整个井田划分为5个带区和2个采区，采用中央并列式通风方式。矿井采用带区式准备方式，工作面设计长度210m，采用综合机械化一次性采全高采煤工艺。矿井年工作日为330d，昼夜净提升时间为16h。矿井采用“三八”制工作制度，两班生产，一班检修,生产班每班完成3个采煤循环。循环进

3、尺为0.8m，日产量为4127.71t。矿井煤炭采用胶带输送机运输，辅助运输采用蓄电池式电机车牵引固定箱式矿车。主井采用两对16t侧卸式箕斗提煤，副井采用一对1.5t矿车双层四车加宽罐笼运送物料和升降人员。专题部分题目为：许疃煤矿综放沿空掘巷巷道支护技术分析。主要分析了综合机械化放顶煤开采时沿空掘巷巷道变形破坏的机理，理论分析所留保护煤柱的宽度以及合理选择掘巷的位置，并提出了使用以高强预应力让压锚杆为核心的锚网支护系统对围岩进行控制。翻译部分主要内容是关于深部高应力破碎软岩巷道可缩性支护试验研究，英文题目为：An experimental study of a yielding support

4、 for roadways constructed in deep broken soft rock under high stress。关键词：立井；单水平；带区；综合机械化一次性采全高；中央并列式通风ABSTRACTThis design includes three parts: the general design, the monographic study and the translation.The general design is about a 1.5Mt/a new underground mine design of Xutuan Coal Mine. Xutuan

5、Coal Mine lies in the southwest of Suzhou City, Anhui province. The transportation in the mining area is very convenient. Its about 6.36.8km on the strike and 2.143.82km on the dip, with the 22.75km2 total area. There are 8 minable coal seam. The main aquifer coal seam is 72 coal seam with an averag

6、e thickness of 3.0m and 82 coal seam with an average thickness of 9.0m .Both the dip of coal seam is 716. The proved reserves of this coal mine are 346.42Mt and the minable reserves are 229.25Mt, with a mine life of 109.2a. The normal mine inflow is 550m3/h and the maximum mine inflow is 660m3/h. Th

7、e mine relative gas emission quantity is 12.0m3/t, and the absolute gas emission quantity is 37.879m3/min. Thus, it is a high gas mine. The coal seam range from tend to spontaneous combustion to have no tendency of spontaneous combustion, and the coal dust has explosion hazard.Based on the geologica

8、l conditions of the mine, I bring forward four available project in technology. The first is vertical shaft development with single mining level and centralized juxtapose ventilation; the second is vertical shaft development with single mining level and two wings of diagonal ventilation; the third i

9、s vertical shaft development with two mining levels, the deep extension of blind slope; and the last is vertical shaft development with two mining levels, the deep extension of blind slope and blind shaft. The first project is the best comparing with other three projects in technology and economy. T

10、he mining level is -650m, and the mine field is divided into five strip districts and two mining district, with centralized juxtapose ventilation.Designed first mining district makes use of the method of the mining district preparation. The design length of working face is 210m, which uses fully mec

11、hanized mining the full -height. The working days in one year are 330. Everyday it takes 16 hours in lifting the coal. The operation mode in the mine is “three-eight” with two teams mining and the other overhauling. Every mining team makes three working cycle, and the overhauling team makes one work

12、ing cycle. So everyday there are 7 working cycles. The advance of a working cycle is 0.8m, and the quantity of 4127.71 ton coal is maked everyday.Main roadway makes use of belt conveyor to transport coal resource, and mine car to be assistant transport. The main shaft uses two double 16t skips to li

13、ft coal and the auxiliary shaft uses a twins wide 1.5t four-car double-deck cage to lift material and personnel transportation.The monographic study entitled “Research on technology of surrounding rock controlling supporting in fully-mechanized caving roadway in Xutuan coal mines”. The study mainly

14、analyse the instability failure reasons of fully-mechanized caving roadway with the application of gob-side entry driving. Then give a theoretical analysis the width of the protective pillar and how to make a reasonable choice of lane in the position. Finally, the corresponding control measures and

15、control mechanism on surrounding rock, which in the core of high resistance and yielding bolt, are raised in this study.The translated academic paper is about yielding support for roadways constructed in deep broken soft rock under high stress. Its title is “An experimental study of a yielding suppo

16、rt for roadways constructed in deep broken soft rock under high stress”.Keywords: shaft; single mining level; strip district; fully mechanized mining the full -height; centralized juxtapose ventilation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11.1.2地形、地貌11.1.3交通条件21.1.4气候、地震21.1.5水文情况21.1.6矿区经济概况21.1.7水源、电源21.2井田地质特征21.2.1井田煤系地层21.2.2井田地质构造41.2.3井田水文地质特征51.3煤层特征71.3.1可采煤层赋存特征71.3.2煤质81.3.3煤层开采