本文選題：導(dǎo)水裂隙帶 + 覆巖運(yùn)動��； 參考：《采礦與安全工程學(xué)報》2017年02期

【摘要】：根據(jù)導(dǎo)水裂隙帶發(fā)育規(guī)律與巖層結(jié)構(gòu)及其運(yùn)動特征的相關(guān)性,提出了基于覆巖組合結(jié)構(gòu)與巖層拉伸變形計(jì)算的導(dǎo)水裂隙帶高度預(yù)計(jì)新方法。研究發(fā)現(xiàn)覆巖導(dǎo)水裂隙帶應(yīng)是以巖層組為單位呈階梯狀向上發(fā)育的,每個巖層組由下部強(qiáng)度因素高的堅(jiān)硬巖層與上部軟弱巖層組成;通過理論分析,提出以巖層層向拉伸率為判據(jù)來判斷巖層組的下沉變形及裂隙發(fā)育程度,只要確定各巖層組中的下位堅(jiān)硬巖層的拉伸率變化拐點(diǎn)就可以較為準(zhǔn)確地分析該巖層組的裂隙發(fā)育度,從而準(zhǔn)確預(yù)測導(dǎo)水裂隙帶發(fā)育高度。在考慮覆巖垮落碎脹特性的基礎(chǔ)上,推導(dǎo)得到了較為合理的巖層層向拉伸率計(jì)算公式。經(jīng)過現(xiàn)場實(shí)測驗(yàn)證,該方法理論預(yù)計(jì)的導(dǎo)高值與現(xiàn)場實(shí)測結(jié)果非常吻合。
[Abstract]:A new method for predicting the height of water-conducting fissure zone based on overburden combined structure and tensile deformation calculation is proposed according to the correlation between the development law of water-conducting fissure zone and strata structure and movement characteristics. It is found that the overburden water conductivity fissure zone should be developed upward in the form of step by step, each rock group is composed of hard rock with high strength factor in the lower part and weak rock layer in the upper part. It is put forward that the subsidence deformation and fracture development degree of rock formation can be judged by the criterion of rock stratum tensile ratio. If the inflection point of tensile rate change of the lower hard rock in each formation is determined, the fracture development degree of the rock formation can be analyzed more accurately. Thus the development height of the water-conducting fissure zone is accurately predicted. On the basis of considering the characteristics of collapse and dilatancy of overburden rock, a reasonable formula for calculating the tensile rate of strata is derived. The experimental results show that the predicted conductance height of the method is in good agreement with the field measurements.
【作者單位】： 山東科技大學(xué)礦業(yè)與安全工程學(xué)院;中國礦業(yè)大學(xué)(北京)力學(xué)與建筑工程學(xué)院;華北科技學(xué)院安全工程學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(51304127,51404105)
【分類號】：TD31

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