本文選題：含水層 + 矸石充填采煤��； 參考：《中國礦業(yè)大學(xué)》2013年博士論文

【摘要】：固體充填采煤是我國自主研發(fā)并具有獨(dú)立知識(shí)產(chǎn)權(quán)的技術(shù)，其技術(shù)內(nèi)涵是采用機(jī)械化方式將矸石等固體廢棄物充填入采空區(qū)，開采傳統(tǒng)方式無法采出的煤炭資源并處理礦區(qū)固體廢棄物。由于充填入采空區(qū)的固體廢棄物控制了上覆巖層的移動(dòng)和裂隙發(fā)育，為含水層下壓煤礦區(qū)提供了一條安全有效的技術(shù)途徑。 本文在簡(jiǎn)要介紹固體充填采煤技術(shù)及其巖層控制理論的基礎(chǔ)上，采用理論分析、實(shí)驗(yàn)測(cè)試、數(shù)值模擬、物理模擬和工程實(shí)踐等方法，系統(tǒng)研究了矸石充填采煤覆巖破壞程度和導(dǎo)水裂隙帶發(fā)育范圍與充實(shí)率之間的定量關(guān)系，給出了裂隙帶形成過程中導(dǎo)水裂隙的演化規(guī)律。 論文首先分析了上覆巖層破壞的主要影響因素，研究了主要因素之一的固體充填材料壓實(shí)變形特征；建立了矸石充填采煤采場(chǎng)基巖彈性地基疊合梁力學(xué)模型，對(duì)矸石充填采煤采場(chǎng)覆巖的破壞條件和破壞高度進(jìn)行了計(jì)算研究；對(duì)相同充實(shí)率的矸石充填采煤和等價(jià)采高垮落法開采進(jìn)行了物理相似模擬，揭露了矸石充填采煤覆巖導(dǎo)水裂隙沿工作面縱向和橫向的發(fā)育特征和演化規(guī)律；對(duì)不同充實(shí)率下的矸石充填采煤采場(chǎng)進(jìn)行了數(shù)值模擬，掌握了充實(shí)率與導(dǎo)水裂隙帶高度的定量關(guān)系，設(shè)計(jì)了五溝煤礦試驗(yàn)區(qū)域采空區(qū)充實(shí)率指標(biāo)并進(jìn)行了工程應(yīng)用。論文主要成果及創(chuàng)新點(diǎn)如下： （1）建立了矸石充填采煤覆巖彈性地基疊層組合梁力學(xué)計(jì)算模型，利用彈性地基系數(shù)表現(xiàn)固體充填材料的密實(shí)度特性，推導(dǎo)出了上覆巖層的彎矩和撓度方程，確定出了基巖層破壞的臨界條件，得出不同充實(shí)率條件下上覆巖層破壞的層數(shù)和高度。 （2）利用物理模擬的方法得出了：區(qū)別于對(duì)應(yīng)等價(jià)采高垮落法覆巖“逐層快速下沉”，充填采煤覆巖的移動(dòng)特征為“整體緩慢下沉”；充填采煤覆巖破壞程度和導(dǎo)水裂隙帶高度均低于對(duì)應(yīng)等價(jià)采高垮落法，其覆巖裂隙發(fā)育呈“產(chǎn)生-緩慢擴(kuò)張”的特征，與等價(jià)采高垮落法開采“產(chǎn)生-迅速擴(kuò)張-緩慢閉合”的發(fā)育特征截然不同，且覆巖裂隙寬度小。 （3）通過對(duì)不同充實(shí)率矸石充填采煤數(shù)值模擬結(jié)果的總結(jié)分析，得出矸石充填采煤覆巖導(dǎo)水裂隙帶高度與充實(shí)率指標(biāo)的定量關(guān)系，并根據(jù)上述研究結(jié)果動(dòng)態(tài)設(shè)計(jì)了試驗(yàn)礦區(qū)矸石充填采煤工作面的充實(shí)率指標(biāo)，，成功開采了臨近富含水層下的煤炭資源，取得良好的經(jīng)濟(jì)與社會(huì)效益。
[Abstract]:Solid filling coal mining is a technology independently developed and has independent intellectual property rights in our country. Its technical connotation is to fill solid waste such as gangue into the goaf by mechanization.Mining coal resources which can not be extracted by traditional methods and disposing of solid wastes in mining areas.Because the solid waste filled in the goaf can control the movement of overlying strata and the development of fractures, it provides a safe and effective technical way for the coal mine area under the aquifer pressure.Based on the brief introduction of solid filling coal mining technology and its strata control theory, this paper adopts the methods of theoretical analysis, experimental test, numerical simulation, physical simulation and engineering practice, etc.The quantitative relationship between the damage degree of coal overburden and the development range and enrichment rate of water-conducting fissure zone is studied systematically, and the evolution law of the water-conducting fissure in the formation process of the fissure zone is given.In this paper, the main factors influencing the failure of overburden strata are analyzed, the compaction deformation characteristics of solid filling materials are studied, and the mechanical model of superimposed beams on elastic foundation of coal mining stope filled with gangue is established.The failure conditions and failure height of overburden in coal mining stope filled with gangue are calculated and studied, and the similar physical simulation of coal mining with the same filling ratio and equivalent mining height caving method is carried out.The development characteristics and evolution law of water diversion fissure of coal overburden with coal gangue filling along longitudinally and laterally are revealed, and the numerical simulation of coal mining stope with gangue filling under different filling ratio is carried out.The quantitative relationship between the enrichment rate and the height of the water-conducting fissure zone is grasped, and the index of the goaf fullness rate in the test area of Wugou Coal Mine is designed and applied in engineering.The main achievements and innovations are as follows:1) the mechanical calculation model of superimposed composite beams on the elastic foundation of coal overburden with coal gangues filling is established. The compactness characteristics of solid filling materials are represented by the coefficient of elastic foundation, and the bending moment and deflection equations of overlying strata are derived.The critical condition of base rock failure is determined, and the number and height of overlying rock failure under different enrichment ratio are obtained.2) using the method of physical simulation, it is concluded that the characteristics of movement of filling coal overburden are "whole slow subsidence", which is different from equivalent mining height collapse method "layer by layer rapid subsidence";The failure degree of overburden rock and the height of water-conducting fissure zone of filling coal mining are lower than that of equivalent mining height collapse method, and the overburden fracture development is characterized by "production-slow expansion".It is different from the equivalent mining height caving method in the development of "production-rapid expansion-slow closure", and the crack width of overburden rock is small.3) through summing up and analyzing the results of numerical simulation of coal mining with different filling rate of gangue, the quantitative relationship between the height of water-conducting fissure zone of coal overburden filled with gangue and the index of filling ratio is obtained.According to the above research results, the enrichment index of coal mining face filled with gangue in experimental mining area is designed dynamically, and the coal resources near rich aquifer are exploited successfully, and good economic and social benefits are obtained.
【學(xué)位授予單位】：中國礦業(yè)大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2013
【分類號(hào)】：TD823.7

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 盧剛;周志芳;;軟硬互層狀巖體滲透特性研究[J];地下水;2006年06期

2 劉增輝;楊本水;;利用數(shù)值模擬方法確定導(dǎo)水裂隙帶發(fā)育高度[J];礦業(yè)安全與環(huán)保;2006年05期

3 李興尚;許家林;朱衛(wèi)兵;賴文奇;;從采充均衡論煤礦部分充填開采模式的選擇[J];遼寧工程技術(shù)大學(xué)學(xué)報(bào)(自然科學(xué)版);2008年02期

4 馬立強(qiáng);張東升;喬京利;王少義;王曄;;淺埋煤層采動(dòng)覆巖導(dǎo)水通道分布特征試驗(yàn)研究[J];遼寧工程技術(shù)大學(xué)學(xué)報(bào)(自然科學(xué)版);2008年05期

5 李躍宇,劉樹春,汪冰,舒小平;用ABAQUS進(jìn)行彈塑性問題的分析[J];淮海工學(xué)院學(xué)報(bào)(自然科學(xué)版);2004年03期

6 耿茂興;尾砂水力充填和尾砂膠結(jié)充填系統(tǒng)的應(yīng)用[J];黃金;2000年02期

7 楊秀瑛,姚香;巖金礦山尾礦應(yīng)用技術(shù)初探[J];黃金;2000年06期

8 楊建永，黃文鈿;膠結(jié)充填電滲脫水試驗(yàn)研究[J];黃金;1996年03期

9 王鵬宇;馮光明;戚洋;賈凱軍;趙建國;;新型高水材料巷旁充填系統(tǒng)可靠性分析[J];金屬礦山;2012年04期

10 秦劍云;周華強(qiáng);李永元;劉坤;;條帶煤柱中沿空掘巷的可行性與煤柱穩(wěn)定性研究[J];能源技術(shù)與管理;2009年01期

相關(guān)博士學(xué)位論文 前4條

1 查劍鋒;矸石充填開采沉陷控制基礎(chǔ)問題研究[D];中國礦業(yè)大學(xué);2008年

2 馮光明;超高水充填材料及其充填開采技術(shù)研究與應(yīng)用[D];中國礦業(yè)大學(xué);2009年

3 常慶糧;膏體充填控制覆巖變形與地表沉陷的理論研究與實(shí)踐[D];中國礦業(yè)大學(xué);2009年

4 黃艷利;固體密實(shí)充填采煤的礦壓控制理論與應(yīng)用研究[D];中國礦業(yè)大學(xué);2012年

本文編號(hào)：1758463