复杂地质条件下矿井开掘支护技术分析

为了探讨了复杂地质条件下煤矿开掘的支护技术,本文首先分析了地壳运动、地质条件的复杂性、支护设备易受外力影响及岩石结构的不稳定性等矿井下复杂地质因素。接着,提出了在此类条件下煤矿掘进支护技术的应用方法,包括正确区分掘机类型、合理选择挖掘机型号、应用临时支护设备、有效防止地下水渗漏以及建立健全技术制度,希望本次研究成功能够为煤矿开掘提供了实用的支护技术方案。

煤矿开挖过程中支护系统技术研究

近些年来我国的经济快速发展,对于能源的需求量也逐年增大。煤炭作为我国的主要能源开采量也逐渐增加。随着煤炭资源的大量开采,矿井在开采过程中的支护技术逐渐成为限制煤炭开采行业的主要技术瓶颈。特别是随着近些年来矿井深度的逐渐增大,开采难度逐渐增大,支护技术要求越来越高的现状,煤矿开采过程中支护系统技术研究的重要性也越来越被人们重视。针对现有的开采技术以及开采环境,对煤矿的支护技术进行了以下几点研究：1）对现有的关于煤矿开采过程中采用的矿井支护技术进行相应的理论研究,分析各种支护系统的优劣性;2）结合多年实际工作经验,对现有的矿井支护系统的优劣性结合实际施工进行相应的分析,研究不同矿井支护系统的自身性质对煤矿开挖技术产生的影响;3）对现有的矿井支护技术进行相应的研究,提出新型的矿井支护系统,并结合有限元技术以及线性分析技术对新型矿井支护系统进行相应的模拟比对,得到新型矿井支护系统的适应性与有效性。

NEW TECHNOLOGY OF ROADSIDE ENTRY SUPPORT IN ADVANCING-MINING BY PUMPING HIGHWATER-CONTENT FAST SETTING-SOLIDIFYING MATERIALS

Roadside entry supporting technology by pumping high water-content fast setting-solidifying materials in advancing-mining was industrially tested in Yangzhuang Coal Mine, Huaibei Coal Mining Administration. Roadside packing parameters were determined according to the properties of high water-content fast setting-solidifying materials, as well as geological and mining conditions. A new roadside packing technological system was designed to use pumping-delivery method to transport the materials. With respect to the special conditions in the advancing mining system, effective temporary support systems were designed and tried. The technical and economic benefits from this new industrial experiment were carefully analyzed and evaluated.