平朔二矿11~#煤层首采面矿压规律研究

发布时间：2018-10-17 10:32

【摘要】：平朔二矿1103采面为11煤的首采工作面,1103采面需要在近距离9煤采空区及遗留煤柱下进行开采。近距离采空区下大采高综采技术在平朔矿区属于首次应用,首采面矿压规律的总结对其他工作面的后续开采具有重要的指导意义。同时由于开采条件特殊,矿压规律较复杂,需要获得大量的现场监测数据。人工分析不仅工作量大,而且准确率和效率将会非常低,需要开发矿压规律分析软件来实现来压参数及支架运行参数的自动化分析。论文针对1103采面,采用现场调研、试验室煤岩物理力学参数测定、现场矿压监测和理论分析的方法研究了该工作面的矿压规律。现场调研取样,获得井工二矿地质资料概况以及11煤和顶板岩石试件,在学校试验室采用W4—130型万能试验机、YES-200型数显单轴压缩试验机和YJ—5型电阻应变仪,通过单轴抗压强度试验和劈裂法抗拉试验测定煤岩试件的物理力学指标。通过现场监测,获得支架工作阻力、顶底板移近以及采面片帮冒顶情况。运用VB语言开发矿压规律分析软件,通过获得的监测数据计算1103采面的来压步距及来压强度等一系列来压参数和支架运行参数。最后通过分析数据处理结果总结1103采面的矿压规律。论文成功总结了1103采面的矿压规律,同时对支架适用性进行了评价总结。研究成果对该矿具有重要意义,不仅为后续工作面安全生产提供了重要依据,也为后续支架选型提供了参考。同时国内对VB语言开发软件分析矿压规律的研究较少,可以为其他矿井矿压规律研究方法的选择提供借鉴。
[Abstract]:The 1103 face of Pingshuo No.2 Mine is the first mining face of 11 coal, and the 1103 face needs to be mined in the close distance 9 coal goaf and under the remaining coal pillar. Fully-mechanized mining technology with large mining height under close goaf is the first time to be applied in Pingshuo mining area. The summary of the law of mine pressure on the first mining face has important guiding significance for the subsequent mining of other working faces. At the same time, because of the special mining conditions and complex rules of mine pressure, a large number of field monitoring data need to be obtained. Manual analysis is not only a heavy workload, but also the accuracy and efficiency will be very low. It is necessary to develop the analytical software to realize the automatic analysis of the pressure parameters and the operating parameters of the support. Aiming at the 1103 mining face, this paper studies the law of mine pressure in this working face by means of field investigation, physical and mechanical parameters measurement of coal and rock in laboratory, on-site monitoring of mine pressure and theoretical analysis. Through field investigation and sampling, the geological data of Jinggong No.2 Mine and 11 coal and roof rock samples were obtained. W4-130 universal testing machine, YES-200 digital display uniaxial compression tester and YJ-5 resistance strain gauge were used in the school laboratory. The physical and mechanical indexes of coal and rock specimens were measured by uniaxial compressive strength test and splitting tensile test. Through the field monitoring, the working resistance of the support, the roof and bottom plate moving close and the roof falling from the mining face are obtained. By using VB language to develop the analysis software of rock pressure law, a series of pressure parameters and support operation parameters, such as the pressure step distance and pressure intensity of 1103 mining face, are calculated by the monitoring data obtained. Finally, the rock pressure law of 1103 mining face is summarized by analyzing the data processing results. In this paper, the rock pressure law of 1103 face is summarized successfully, and the applicability of the support is evaluated and summarized at the same time. The research results are of great significance to the mine, which not only provides an important basis for the safety production of the subsequent working face, but also provides a reference for the selection of the follow-up support. At the same time, there are few researches on the analysis of mine pressure law by VB language, which can be used as a reference for other mine pressure law research methods.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD323

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