王引河下采煤堤壩移動(dòng)與變形規(guī)律研究
發(fā)布時(shí)間：2018-08-01 10:34
【摘要】：隨著我國(guó)經(jīng)濟(jì)的快速增長(zhǎng),對(duì)煤礦資源需求日益提高,導(dǎo)致"水體下采煤"活動(dòng)加劇。"水體下采煤"勢(shì)必會(huì)對(duì)河堤造成影響,給人民的生命財(cái)產(chǎn)安全帶來(lái)巨大的隱患。因此,必須在煤礦開(kāi)采前對(duì)河堤受到的影響程度及范圍進(jìn)行科學(xué)合理的預(yù)測(cè),為堤壩修復(fù)提供技術(shù)支持。本文以王引河下劉橋一礦663工作面采煤為例,根據(jù)該工作面的地質(zhì)采礦和概率積分法預(yù)計(jì)參數(shù),利用VB編程語(yǔ)言建立概率積分預(yù)測(cè)模型;根據(jù)該工作面地質(zhì)采礦和巖體力學(xué)參數(shù),基于FISH編程語(yǔ)言建立FLAC3D預(yù)測(cè)模型。用這兩種預(yù)測(cè)模型對(duì)王引河下采煤的河堤移動(dòng)與變形進(jìn)行預(yù)測(cè)、分析,研究其規(guī)律。本文將兩種預(yù)測(cè)模型的預(yù)測(cè)結(jié)果與王引河北堤移動(dòng)觀測(cè)站觀測(cè)數(shù)據(jù)進(jìn)行對(duì)比分析。分析結(jié)果表明:在河堤移動(dòng)與變形預(yù)測(cè)方面,概率積分法和FLAC3D數(shù)值模擬分析法都是可行的;王引河北堤受到了 633工作面開(kāi)采影響,南堤未受到影響;就整體下沉而言,概率積分預(yù)測(cè)模型優(yōu)于FLAC3D預(yù)測(cè)模型;就水平移動(dòng)而言,FLAC3D預(yù)測(cè)模型的預(yù)測(cè)效果優(yōu)于概率積分法預(yù)測(cè)模型。兩種預(yù)測(cè)模型的水平變形預(yù)測(cè)結(jié)果表明:在663工作面的開(kāi)采影響下,王引河北堤出現(xiàn)裂縫的概率較小。本文利用FLAC3D數(shù)值模擬并結(jié)合后處理軟件(Tecplot360),從拉應(yīng)力和剪應(yīng)力兩個(gè)方面分析了王引河北堤受663工作面開(kāi)采影響的受力情況。拉應(yīng)力分析結(jié)果表明:北堤背水坡拉應(yīng)力較為集中,最大拉應(yīng)力沒(méi)有達(dá)到堤體出現(xiàn)裂縫的拉應(yīng)力臨界值,北堤產(chǎn)生橫向裂縫的概率較小;剪應(yīng)力分析結(jié)果表明:王引河北堤堤體fs均大于0,根據(jù)剪切破壞準(zhǔn)側(cè),北堤不會(huì)出現(xiàn)剪切破壞。研究結(jié)果對(duì)具有相似地質(zhì)采礦條件下的河下采煤具有一定的指導(dǎo)意義。
[Abstract]:With the rapid economic growth of our country, the demand for coal resources is increasing day by day, which leads to the intensification of "coal mining under water body". Mining under water is bound to affect river embankment and bring great hidden danger to people's life and property safety. Therefore, it is necessary to make scientific and reasonable prediction of the influence degree and scope of river embankment before coal mining, to provide technical support for the restoration of embankment. In this paper, taking 663 coal mining face of Wangyin River Xialiuqiao No. 1 Mine as an example, the probability integral prediction model is established by VB programming language according to the prediction parameters of geological mining and probability integration method of the working face. According to the geological mining and rock mechanics parameters of the working face, the FLAC3D prediction model is established based on FISH programming language. The two prediction models are used to predict the movement and deformation of the river embankment of coal mining under the Wangyin River. In this paper, the prediction results of the two kinds of prediction models are compared with the observation data of Wang Yindi moving observation Station in Hebei Province. The results show that the probabilistic integration method and FLAC3D numerical simulation method are feasible in predicting the movement and deformation of the river embankment, the Wangyin Hebei embankment is affected by 633 face mining, the south embankment is not affected, and as far as the whole subsidence is concerned, The probabilistic integral prediction model is superior to the FLAC3D model, and the FLAC3D prediction model is superior to the probabilistic integration model in terms of horizontal movement. The results of horizontal deformation prediction of two kinds of prediction models show that under the influence of 663 face mining, the probability of cracks appearing in the embankment of Wangyin Hebei is relatively small. Based on the FLAC3D numerical simulation and post-processing software (Tecplot360), this paper analyzes the influence of mining on the Wang-Yin-Hebei embankment from the two aspects of tensile stress and shear stress. The results of tensile stress analysis show that the tensile stress on the back slope of the north embankment is relatively concentrated, the maximum tensile stress does not reach the critical value of tensile stress of the dike body, and the probability of transverse crack in the north embankment is relatively small. The results of shear stress analysis show that the body fs of the embankment of Wangyin Hebei is greater than 0. According to the quasi-side of shear failure, there will be no shear failure in the north embankment. The research results have certain guiding significance for mining coal under similar geological and mining conditions.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TV871;TD325
本文編號(hào)：2157293
[Abstract]:With the rapid economic growth of our country, the demand for coal resources is increasing day by day, which leads to the intensification of "coal mining under water body". Mining under water is bound to affect river embankment and bring great hidden danger to people's life and property safety. Therefore, it is necessary to make scientific and reasonable prediction of the influence degree and scope of river embankment before coal mining, to provide technical support for the restoration of embankment. In this paper, taking 663 coal mining face of Wangyin River Xialiuqiao No. 1 Mine as an example, the probability integral prediction model is established by VB programming language according to the prediction parameters of geological mining and probability integration method of the working face. According to the geological mining and rock mechanics parameters of the working face, the FLAC3D prediction model is established based on FISH programming language. The two prediction models are used to predict the movement and deformation of the river embankment of coal mining under the Wangyin River. In this paper, the prediction results of the two kinds of prediction models are compared with the observation data of Wang Yindi moving observation Station in Hebei Province. The results show that the probabilistic integration method and FLAC3D numerical simulation method are feasible in predicting the movement and deformation of the river embankment, the Wangyin Hebei embankment is affected by 633 face mining, the south embankment is not affected, and as far as the whole subsidence is concerned, The probabilistic integral prediction model is superior to the FLAC3D model, and the FLAC3D prediction model is superior to the probabilistic integration model in terms of horizontal movement. The results of horizontal deformation prediction of two kinds of prediction models show that under the influence of 663 face mining, the probability of cracks appearing in the embankment of Wangyin Hebei is relatively small. Based on the FLAC3D numerical simulation and post-processing software (Tecplot360), this paper analyzes the influence of mining on the Wang-Yin-Hebei embankment from the two aspects of tensile stress and shear stress. The results of tensile stress analysis show that the tensile stress on the back slope of the north embankment is relatively concentrated, the maximum tensile stress does not reach the critical value of tensile stress of the dike body, and the probability of transverse crack in the north embankment is relatively small. The results of shear stress analysis show that the body fs of the embankment of Wangyin Hebei is greater than 0. According to the quasi-side of shear failure, there will be no shear failure in the north embankment. The research results have certain guiding significance for mining coal under similar geological and mining conditions.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TV871;TD325
【相似文獻(xiàn)】
相關(guān)碩士學(xué)位論文 前1條
1 張磊;王引河下采煤堤壩移動(dòng)與變形規(guī)律研究[D];安徽理工大學(xué);2017年
，本文編號(hào)：2157293
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