山西晋城寺河煤矿设计

毕业设计说明书

此毕业设计包括两个部分：一般部分和专题部分。

一般部分为寺河矿240万t新井设计，共分为十部分：矿井概述及井田地质特征；井田境界和储量；矿井工作制度、设计生产能力及服务年限；井田开拓；采区巷道布置；采煤方法；井下运输；矿井提升；矿井通风及安全和设计矿井基本经济技术指标。现在我做以个简要的概述。

寺河矿东西长约为6300m，南北宽约为4090m，面积约为23.54km2。其中可采煤层为3#煤，倾角平均为5°。该煤层赋存稳定，平均厚度5.3m。属于高瓦斯矿井，煤层有爆炸危险性，和自然发火现象。

本矿井设计采用“四六”制工作制度，即“三采一准”，矿井设计生产能力按年工作日330 d 计算。每天净提升时间为16 h。

寺河矿为新建矿井，且瓦斯涌出量低，所以设 1 个主井、1 个副井、1 个风井。为了保证第一水平的服务年限主副井筒位于井田中央。本矿井采用斜井单水平开拓方式。

由于开采煤层为单一中厚煤层，故采用煤层上山布置。根据设计要求，同时生产的采区一个，一个采区一个工作面保证全矿井的产量。

主井井筒断面为半圆拱形，净断面面积为15.5m2，倾角为14°，表土段的掘进断面面积为21.7 m2，基岩段掘进面积为17.1 m2，井筒内装备B=1400mm胶带输送机，装备斜井架空乘人器，负责矿井人员升降，靠近机尾段铺设检修轨道，设有一趟消防洒水管路和一趟压风管路。风井直径7m。井底车场采用斜井折返式。采用1.5t固定箱式矿车。大巷装车站线路采用尽头式。运输、回风大巷宽为5.3m。故选用钢筋砂浆锚喷支护。采用半圆拱形断面。

矿井布置一个综采工作面保证全矿井的产量，长度210m，采用沿空留巷。

大巷采用10t架线式电机车牵引3t底卸式矿车运输，采煤方法为倾向长壁采煤法，采煤工艺为综合机械化采煤工艺，采空区处理方法为全部垮落法。

矿井的开采能力取决于回采工作面和采区的生产能力，本矿井计划用一个采区的一个高产、高效工作面保证全矿井的产量。

主采煤层厚度5.3m，工作面长度210 m，采煤机截深0.865m，每天进6刀，一年工作日330 d ,工作面回采率90% ，计算出综采面的生产能力为257.06万t，

再加掘进头出煤能够满足矿井设计生产能力的要求。

采区主采煤层3号煤为缓倾斜中厚煤层，本区段工作面采用综采，用全部跨落法处理采空区。工作面年推进长度为1712.7m。采用倾向长壁全部跨落一次采全高综采采煤法。

在选择工艺方式的时候遵循安全第一的原则，设计采用及时支护的工艺方式矿井工作面一般采用端部斜切进刀，割三角煤，进刀长度30m，往返一次割两刀：①当采煤机割至工作面端头时，其后的输送机槽已移近煤壁，采煤机机身处尚留有一段下部煤②调换滚筒位置，前滚筒降下、后滚筒升起并沿输送机弯曲段返向割入煤壁，直至输送机直线段为止。然后将输送机移直③再调换两个滚筒上下位置，重新返回割煤至输送机机头处④将三角煤割掉，煤壁割直后，再次调换上下滚筒，返程正常割煤。

采煤通常采用相背旋转，前顶后底。本矿井由于煤层倾角较小，可利用工作面液压支架来支护端头，滞后工作面支架一个截深。

本矿采用的提升方式主井采用箕斗提升，副井采用罐笼提升；

风速的验算符合要求，通风阻力经过计算。

关键词：斜井; 单水平;一次采全高; 两翼对角式

Graduation Project Manual

Abstract:This graduation project consists of two parts: a general part and special part. Sihe the general part of 2.4 million t ore Arai design, is divided into ten parts: an overview of the mine and mine geological features; Waida realm and reserves; mine system, design capacity and length of service; mine development; mining area roadway layout; mining coal method; underground transport; mine hoist; mine ventilation and mine safety and the design of the basic economic and technical indicators. I do now to a brief overview.

Sihe mine for things about 6300m, north-south width is 4090m, an area of about 23.54km2. Which can be for the 3 # coal seam of coal, the average inclination of 5 °.

Occurrence and stability of the coal seam, with an average thickness of 5.3m.

High-gas coal mine, coal has the danger of explosion, and the phenomenon of spontaneous combustion.

Design of the mine, "46" system of systems of work, that is, the mine design capacity of 330 d year-on-year calculation of working days. Enhance the net time for each day 16 h.

Sihe mine for the new mine, and low gas emission, so set up a main shaft, an auxiliary shaft, a ventilation shaft. In order to ensure the first level of length of service at the main mine shaft, Deputy Central. Inclined shaft of the mine using a single standard way to open up.

As a result of coal mining in a single thick coal seam, so the use of coal seam up the mountain layout. According to design requirements, at the same time production

of a mining area, a mining area of a mine working face to ensure that the whole production.

Main Shaft for the semi-circular arc section, the net cross-section area of 15.5m2, an inclination of 14 °, the surface soil above the excavation cross-section area of 21.7 m2, an area of bedrock boring paragraph 17.1 m2, wellbore equipment B = 1400mm belt conveyor, by people inclined overhead equipment, and personnel responsible for take-off and landing of mine, maintenance around the track laying machine tail with trip trip sprinkler pressure lines and the wind pipe. Ventilation shaft diameter of 7m. Returned to the use of inclined shaft type. 1.5t using a fixed box-type tub. Roadway station installed at the end of line style used. Transport, air return roadway width 5.3m. Therefore, selection of reinforced mortar anchor bolting. The use of semi-circular arch section.

Mine layout of a fully mechanized coal mining face to ensure that the output of the mine-wide, the length of 210m, along goaf.

Roadway 10t wiring used motor vehicles traction 3t dump mine car at the end of the transport, mining method for the tendency of longwall mining method, coal mining mechanization technology for integrated process approach goaf falling for the entire