本文選題：采礦工程 + 深部開采�。� 參考：《巖石力學(xué)與工程學(xué)報(bào)》2016年11期

【摘要】：為進(jìn)一步研究深部底板巖體的破裂失穩(wěn)機(jī)制,基于自主研制的高水壓底板突水相似模擬試驗(yàn)系統(tǒng),建立深部承壓水上含小斷層底板采動(dòng)裂隙演化及導(dǎo)水通道形成的模型,通過(guò)在底板不同深度布設(shè)應(yīng)力傳感器和位移監(jiān)測(cè)點(diǎn),研究底板和斷層附近巖體隨工作面開采的應(yīng)力及位移變化規(guī)律,反演得到底板及斷層采動(dòng)裂隙的發(fā)育及擴(kuò)展演化規(guī)律,為深部開采工作面突水機(jī)制的研究提供了一種新的思路。結(jié)果表明:工作面開采過(guò)程中,底板巖體的受力變化規(guī)律主要有2種:(1)開切眼左側(cè)煤柱底板巖體的應(yīng)力增量出現(xiàn)先增大后減小的變化趨勢(shì);(2)采場(chǎng)底板巖體的應(yīng)力增量出現(xiàn)先增大后減小至零再反向增大的變化趨勢(shì)。深部底板巖體的采動(dòng)裂隙主要在開切眼、采空區(qū)中部和回采工作面3個(gè)部位產(chǎn)生,裂隙類型以豎向張裂隙、剪切裂隙和層向裂隙為主,且在主要裂隙附近衍生出一些細(xì)微的小裂隙。距煤層較近的斷層上、下盤巖體受到的應(yīng)力差較大,斷層上盤在強(qiáng)剪應(yīng)力差的作用下形成了一條與斷層走向平行的剪切裂隙,加快了斷裂面破碎巖體的相對(duì)滑動(dòng)程度,促進(jìn)了斷層的活化。
[Abstract]:In order to further study the fracture and instability mechanism of deep floor rock mass, based on the self-developed water inrush simulation test system of high hydraulic pressure floor slab, a model of mining fissure evolution and channel formation of bottom slab with small fault in deep confined water is established. By placing stress sensors and displacement monitoring points at different depths of the floor, the variation of stress and displacement of the rock mass near the floor and the fault with the mining face is studied, and the law of the development and expansion and evolution of the floor and fault mining fissures is obtained by inversion. It provides a new way to study the mechanism of water inrush in deep mining face. The results show that: in the process of mining, The stress increment of the floor rock mass on the left side of the cut hole increases first and then decreases. The stress increment of the floor rock mass increases first and then decreases to zero. An increasing trend of change. The mining fissures of deep floor rock are mainly produced in the open and cut holes, in the middle of goaf and in the mining face. The types of fractures are vertical fracture, shear fissure and stratum fracture. And there are some small cracks in the vicinity of the main fissure. On the fault near the coal seam, the stress difference of the rock mass in the lower face is great. Under the action of the strong shear stress difference, a shear crack parallel to the strike of the fault is formed in the upper face of the fault, which speeds up the relative sliding degree of the fractured rock mass on the fault plane. It promotes the activation of faults.
【作者單位】： 山東科技大學(xué)礦山災(zāi)害預(yù)防控制省部共建國(guó)家重點(diǎn)實(shí)驗(yàn)室培育基地;河南理工大學(xué)河南省礦產(chǎn)資源綠色高效開采與綜合利用重點(diǎn)實(shí)驗(yàn)室;中國(guó)礦業(yè)大學(xué)(北京)地球科學(xué)與測(cè)繪工程學(xué)院;山東能源集團(tuán)淄博礦業(yè)集團(tuán)有限責(zé)任公司;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51604167) 河南理工大學(xué)河南省礦產(chǎn)資源綠色高效開采與綜合利用重點(diǎn)實(shí)驗(yàn)室開放基金資助項(xiàng)目(S201610) 中國(guó)博士后科學(xué)基金資助項(xiàng)目(2015T80731)~~
【分類號(hào)】：TD745

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1 徐禮華;謝妮;;巖石剪切裂隙滲流特性試驗(yàn)與理論研究[J];巖石力學(xué)與工程學(xué)報(bào);2009年11期

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