【摘要】：以百良旭升煤礦505運(yùn)輸順槽巷道支護(hù)為工程背景,基于現(xiàn)場(chǎng)測(cè)試數(shù)據(jù),結(jié)合有限差分法模擬計(jì)算,對(duì)巷道原支護(hù)設(shè)計(jì)的相關(guān)參數(shù)進(jìn)行了分析評(píng)價(jià),在此基礎(chǔ)上提出了不同的巷道支護(hù)方案,進(jìn)行不同方案支護(hù)參數(shù)的比較分析,提出巷道最優(yōu)支護(hù)方案。其主要工作如下:1.論文分析總結(jié)了錨桿(索)作用機(jī)理及設(shè)計(jì)理論,并且以自穩(wěn)隱形拱理論為基礎(chǔ),推導(dǎo)出錨桿(索)支護(hù)體系的參數(shù)設(shè)計(jì)公式。2.通過(guò)現(xiàn)場(chǎng)監(jiān)測(cè)及數(shù)值模擬等方法對(duì)505運(yùn)輸順槽原有支護(hù)進(jìn)行了分析評(píng)價(jià),發(fā)現(xiàn)在原有支護(hù)條件下,圍巖變形明顯,應(yīng)力集中現(xiàn)象嚴(yán)重,不能保持圍巖穩(wěn)定性。3.應(yīng)用自穩(wěn)隱形拱理論,對(duì)原支護(hù)方案相關(guān)參數(shù)進(jìn)行優(yōu)化設(shè)計(jì),并據(jù)工程類比法提出兩套對(duì)比方案。應(yīng)用FLAC3D模擬軟件對(duì)三種方案進(jìn)行了計(jì)算分析,從支護(hù)效果的角度確定了最優(yōu)支護(hù)方案,并將優(yōu)化后方案運(yùn)用到設(shè)計(jì)巷道支護(hù)中。通過(guò)現(xiàn)場(chǎng)監(jiān)測(cè)表明,新的支護(hù)體系能夠有效提高圍巖抵抗變形和破壞能力,有利于發(fā)揮巷道圍巖的自身承載能力,能夠滿足工程要求。本文研究的內(nèi)容和成果,為今后煤礦巷道支護(hù)的設(shè)計(jì)提供重要的參考價(jià)值;豐富和發(fā)展了錨桿(索)支護(hù)設(shè)計(jì)理論,對(duì)錨桿(索)支護(hù)設(shè)計(jì)具有重要的指導(dǎo)意義。
[Abstract]:Based on the field test data and the finite difference simulation calculation, the related parameters of the original support design of the roadway are analyzed and evaluated based on the engineering background of the supporting roadway of No. 505 transport in Bailiangxusheng Coal Mine. On the basis of this, different roadway support schemes are put forward, the supporting parameters of different schemes are compared and analyzed, and the optimal support scheme is put forward. Its main work is as follows: 1. This paper analyzes and summarizes the action mechanism and design theory of anchor rod (cable), and based on the theory of self-stable invisible arch, deduces the parameter design formula of bolt (cable) supporting system. 2. By means of field monitoring and numerical simulation, the original support of 505 transportation along the channel is analyzed and evaluated. It is found that under the original support conditions, the surrounding rock deformation is obvious, the stress concentration phenomenon is serious, and the stability of surrounding rock can not be maintained. Based on the theory of self-stable stealthy arch, the related parameters of the original support scheme are optimized, and two sets of contrast schemes are put forward according to the engineering analogy method. The three schemes are calculated and analyzed by using FLAC3D simulation software, and the optimal support scheme is determined from the point of view of supporting effect, and the optimized scheme is applied to the design of roadway support. The field monitoring shows that the new support system can effectively improve the ability of resisting deformation and failure of surrounding rock, which is helpful to give full play to the bearing capacity of surrounding rock of roadway and can meet the requirements of engineering. The contents and achievements of this paper provide important reference value for the design of roadway support in the future, enrich and develop the design theory of bolt (cable) support, and have important guiding significance for the design of bolt (cable) support.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD353

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