本文關(guān)鍵詞： 破碎巖體 錨桿支護(hù) 錨網(wǎng)噴支護(hù) 可靠性 FMECA 結(jié)構(gòu)可靠性　出處：《昆明理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：現(xiàn)如今破碎巖體巷道的變形控制依舊是地下工程巖石力學(xué)研究的世界難題。而隨著我國經(jīng)濟(jì)的高速發(fā)展,資源的開發(fā)也已經(jīng)不斷地向深部轉(zhuǎn)移,使得深部巷道在高應(yīng)力的作用下,特別是在那些地質(zhì)活動較為強(qiáng)烈的地區(qū),傳統(tǒng)的淺部巷道支護(hù)結(jié)構(gòu)就不在適用。而在深部礦山出現(xiàn)的一系列的問題,如巷道變形速度快、變形持續(xù)時(shí)間長、巷道支護(hù)維護(hù)困難等等的問題,因此對巷道支護(hù)結(jié)構(gòu)的可靠性要求更高,如果巷道支護(hù)結(jié)構(gòu)的可靠性不能得到保障,也就無法保證礦山的安全生產(chǎn)。本文主要是運(yùn)用FMECA分析的方法,運(yùn)用FMECA分析錨桿支護(hù)、噴射混凝土支護(hù)以及錨網(wǎng)噴支護(hù)的各個(gè)失效模式及其嚴(yán)酷度對系統(tǒng)的影響,同時(shí)分析各個(gè)失效模式的原因,為礦山實(shí)際的巷道支護(hù)做一個(gè)指導(dǎo),使得礦山的巷道支護(hù)工作能夠準(zhǔn)確地抓住重點(diǎn),以方便、經(jīng)濟(jì)的方式保證巷道的穩(wěn)定,避免事故的發(fā)生。通過結(jié)構(gòu)可靠度的計(jì)算得出,錨桿支護(hù)系統(tǒng)在獅子山并不適用,以及獅子山鉛鋅礦噴射混凝土支護(hù)系統(tǒng)的結(jié)構(gòu)可靠度很低,必須加以改進(jìn)才能適應(yīng)礦山的生產(chǎn)。結(jié)合FMECA以及結(jié)構(gòu)可靠度分析,對獅子山鉛鋅礦進(jìn)行改進(jìn),為了保證生產(chǎn)以及安全的平衡,在獅子山鉛鋅礦噴射混凝土的基礎(chǔ)上,加大錨桿密度以及布置鋼筋網(wǎng),即采用錨網(wǎng)噴聯(lián)合支護(hù)系統(tǒng)。同時(shí)運(yùn)用結(jié)構(gòu)可靠度的方法,計(jì)算出對于獅子山鉛鋅礦錨網(wǎng)噴支護(hù)系統(tǒng)的可靠度要比錨桿支護(hù)的可靠度高。在鋼筋混凝土結(jié)構(gòu)下錨網(wǎng)噴支護(hù)系統(tǒng),它提供的結(jié)構(gòu)抗力要比錨桿支護(hù)提供的更加可靠,因此它更能應(yīng)對地下礦山的地質(zhì)條件變化。
[Abstract]:Nowadays, the deformation control of broken rock roadway is still a difficult problem in the research of rock mechanics in underground engineering. However, with the rapid development of economy in China, the exploitation of resources has been continuously transferred to the deep. Under the action of high stress, especially in those areas where geological activities are relatively strong, the traditional shallow roadway support structure is not suitable. However, a series of problems appear in deep mines, such as the fast deformation speed of roadway, The problems of long deformation duration, difficult maintenance of roadway support and so on, therefore, the reliability of roadway support structure is higher, if the reliability of roadway support structure can not be guaranteed, In this paper, FMECA analysis method is used to analyze the influence of bolt support, shotcrete support and bolt-mesh shotcrete support on the system. At the same time, it analyzes the reasons of each failure mode, and makes a guide for the actual roadway support in the mine, so that the roadway support work can accurately grasp the key points and ensure the stability of the roadway in a convenient and economical way. From the calculation of structural reliability, it is concluded that the bolting system is not suitable in Lion Rock, and the structural reliability of shotcrete support system in Lion Rock Pb-Zn Mine is very low. It must be improved in order to adapt to mine production. Combined with FMECA and structural reliability analysis, the Lead-Zinc Mine of Lion Rock is improved. In order to ensure the balance of production and safety, on the basis of shotcrete in Lion Rock Pb-Zn Mine, Increase the density of anchor rod and arrange steel mesh, that is to say, adopt the combined support system of anchor, net and shotcrete. At the same time, use the method of structural reliability, It is calculated that the reliability of the bolting and shotcreting system in Shizishan lead-zinc mine is higher than that of the bolting support. Under the reinforced concrete structure, the structure resistance provided by the bolting net shotcreting system is more reliable than that provided by the bolt support. Therefore, it is more able to cope with the geological conditions of underground mines.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD353

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