本文選題：水平應(yīng)力 + 斷裂線位置　； 參考：《實驗力學(xué)》2017年04期

【摘要】：為得到水平應(yīng)力對頂板垮落角的影響,進(jìn)而確定高位抽采鉆孔布孔參數(shù),采用理論分析及相似材料模擬實驗的方法進(jìn)行了研究。首先依據(jù)基本頂斷裂位置圍巖結(jié)構(gòu)力學(xué)模型,將頂板巖層假設(shè)為梁結(jié)構(gòu),得到單一巖梁在不同水平應(yīng)力作用下的斷裂線位置變化規(guī)律。然后將各巖梁的斷裂線位置疊加組合,得到水平應(yīng)力對垮落角發(fā)育的影響。為驗證理論分析結(jié)果,以水平應(yīng)力值為影響因素設(shè)計了三組不同水平應(yīng)力值條件下的雙向加載相似材料模擬實驗,得到了不同水平應(yīng)力值對應(yīng)的垮落角。研究結(jié)果表明:頂板垮落角由各巖梁斷裂線位置決定。地基系數(shù)較小時,斷裂線與地基初始接觸位置距離隨水平應(yīng)力的增加表現(xiàn)為先減小后增加,垮落角變化規(guī)律同樣為先減小后增加,但減小不明顯;當(dāng)?shù)鼗禂?shù)增加時,隨水平應(yīng)力增加,斷裂線與地基初始接觸位置的距離減小趨勢逐漸消除,僅表現(xiàn)為增加趨勢,垮落角變化同樣表現(xiàn)為增加趨勢�，F(xiàn)場應(yīng)用表明,采用雙向加載模型得到的垮落角對鉆孔布置參數(shù)進(jìn)行優(yōu)化,優(yōu)化后鉆場抽采濃度及高濃度抽采時間均得到提高。
[Abstract]:In order to obtain the effect of horizontal stress on roof caving angle and to determine the hole layout parameters of high extraction boreholes, theoretical analysis and simulation experiments of similar materials were used to study the effect of horizontal stress on roof caving angle. Firstly, according to the mechanical model of surrounding rock structure at the basic top fracture position, the roof rock layer is assumed to be the beam structure, and the variation law of the fracture line position of the single rock beam under different horizontal stresses is obtained. Then, the influence of horizontal stress on the development of collapse angle is obtained by superposing the fault line positions of each rock beam. In order to verify the theoretical analysis results, three groups of simulation experiments of bidirectional loading of similar materials under different horizontal stress values were designed with the horizontal stress values as the influencing factors, and the collapse angles corresponding to the different horizontal stress values were obtained. The results show that the roof collapse angle is determined by the fracture line position of each rock beam. When the coefficient of foundation is small, the distance of initial contact position between fracture line and foundation decreases first and then increases with the increase of horizontal stress, and the variation law of collapse angle also decreases first and then increases, but the decrease is not obvious, when the coefficient of foundation increases, With the increase of horizontal stress, the decreasing trend of the distance between the fracture line and the initial contact position of the foundation is gradually eliminated, which only shows an increasing trend, and the change of the collapse angle also shows an increasing trend. The field application shows that the borehole layout parameters are optimized by using the collapse angle obtained by the bidirectional loading model, and the extraction concentration and the extraction time of high concentration are improved after optimization.
【作者單位】： 遼寧工程技術(shù)大學(xué)礦業(yè)學(xué)院;遼寧工程技術(shù)大學(xué)力學(xué)與工程學(xué)院;
【基金】：國家青年自然科學(xué)基金(編號51304111) 國家重點研發(fā)計劃(課題編號:2016YFC0801404);國家重點研發(fā)計劃(課題編號:2016YFC0600704)
【分類號】：TD712.61

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 孫闖;;巷道底鼓水平應(yīng)力估算方法研究[J];西安科技大學(xué)學(xué)報;2013年02期

2 姜晨光,王學(xué)智,于雪鵬,賀勇,廖明全,黃家興;礦山尾礦壩水平應(yīng)力豎向分布規(guī)律的新認(rèn)識[J];礦冶;2004年01期

3 郭頌;水平應(yīng)力——對采準(zhǔn)巷道圍巖穩(wěn)定性的新認(rèn)識[J];煤礦開采;1998年04期

4 勾攀峰;韋四江;張盛;;不同水平應(yīng)力對巷道穩(wěn)定性的模擬研究[J];采礦與安全工程學(xué)報;2010年02期

5 江學(xué)良;曹平;楊慧;林杭;;水平應(yīng)力與裂隙密度對頂板安全厚度的影響[J];中南大學(xué)學(xué)報(自然科學(xué)版);2009年01期

6 孫玉福;;水平應(yīng)力對巷道圍巖穩(wěn)定性的影響[J];煤炭學(xué)報;2010年06期

7 張明建;鎬振;郜進(jìn)海;呂兆恒;;不同水平應(yīng)力作用下巷道圍巖破壞特征研究[J];煤炭科學(xué)技術(shù);2014年03期

8 趙慶濤;郜進(jìn)海;程寶軍;;不同水平應(yīng)力作用下的傾斜軟巖巷道圍巖穩(wěn)定性的數(shù)值模擬研究[J];工礦自動化;2011年05期

9 王曉磊;王耀普;馬龍;;數(shù)值模擬水平應(yīng)力對巷道穩(wěn)定性的影響[J];現(xiàn)代礦業(yè);2014年01期

10 郭頌;快速、通用、巨型礦山巷道系統(tǒng)三維有限元模型系統(tǒng)的建立[J];焦作工學(xué)院學(xué)報;1999年02期

相關(guān)碩士學(xué)位論文 前2條

1 李星;深部高水平應(yīng)力巷道底鼓機(jī)理及連續(xù)“雙殼”治理實驗研究[D];河北工程大學(xué);2013年

2 姚裕春;高水平應(yīng)力軟巖巷道圍巖變形機(jī)理及支護(hù)對策[D];西安科技學(xué)院;2002年

，

本文編號：1846457