本文選題：煤柱回收 + 覆巖破斷��； 參考：《太原理工大學(xué)》2015年碩士論文

【摘要】：隨著全社會對資源回收利用的要求日益提高，礦井采區(qū)煤柱的回收越來越受到人們的重視。煤柱回收工作面因?yàn)槠鋬蓚?cè)都已經(jīng)采空，使得其具有特殊的覆巖運(yùn)動破斷特征。特別是煤柱回收過程中往往會遇到其它已有采區(qū)的空巷等特殊情況，導(dǎo)致煤柱回收工作面與普通工作面相比具有不同的礦壓顯現(xiàn)規(guī)律，給煤柱回收工作面開采造成了很大的困難。目前，對于工作面上覆巖層運(yùn)動破斷特征及礦壓顯現(xiàn)規(guī)律的研究工作主要針對的是普通采場。 本文結(jié)合潞安集團(tuán)慈林山煤業(yè)夏店礦35煤柱回收工作面的地質(zhì)條件，采用理論分析、FLAC軟件模擬以及現(xiàn)場實(shí)測相結(jié)合的方法，對夏店礦35煤柱回收工作面上覆巖層破斷特征及礦壓顯現(xiàn)規(guī)律進(jìn)行比較全面的研究，為采場圍巖控制提供了依據(jù)。主要研究內(nèi)容如下： （1）35煤柱回收工作面上覆巖層破斷高度及整體破斷形態(tài)； （2）35煤柱回收工作面礦壓顯現(xiàn)規(guī)律，具體包括工作面來壓步距情況、液壓支架工作阻力分布特征、超前支承壓力情況和工作面回采巷道表面位移規(guī)律； （3）過空巷期間礦壓顯現(xiàn)特征及巷道圍巖控制措施。 結(jié)合實(shí)際回采效果，本文的研究內(nèi)容為夏店礦35煤柱回收工作面安全、高效生產(chǎn)提供了基本保障，對相似地質(zhì)條件下煤柱回收工作面的回采具有一定的參考價值。
[Abstract]:With the increasing demands of the whole society for the recovery and utilization of resources, people pay more and more attention to the recovery of coal pillars in mining areas. Pillar mining face has special overlying movement breaking characteristics because it has been mined out on both sides. Especially in the process of coal pillar recovery, some special situations such as other empty roadways in existing mining areas are often encountered, which leads to different rules of mine pressure behavior in pillar recovery working face compared with common working face. The mining of coal pillar mining face has caused great difficulties. At present, the research on the breaking characteristics of overlying strata and the regularity of rock pressure behavior are mainly aimed at the common stope. Combined with the geological conditions of No. 35 pillar recovery working face of Xiadian Coal Mine in Cilinshan Coal Industry of Lu'an Group, this paper adopts the method of combining theoretical analysis with FLAC software simulation and field measurement. The fracture characteristics of overlying strata and the regularity of rock pressure appearance in No. 35 coal pillar recovery face of Xadian Coal Mine are studied comprehensively, which provides a basis for the control of surrounding rock in stope. The main contents of the study are as follows: (1) the breaking height of overlying strata and the breakage form of overlying strata in 35 coal pillar recovery face; (2) the regularity of mine pressure appearance in 35 coal pillar recovery working face, including the working face pressure step distance, The working resistance distribution characteristics of hydraulic support, the advance supporting pressure and the surface displacement law of mining roadway in working face; (3) the characteristics of mine pressure behavior and the control measures of surrounding rock in roadway during the gob passage. Combined with the actual mining results, the research content of this paper provides a basic guarantee for the safety and efficient production of the No. 35 pillar recovery face in Xadian Coal Mine, and has a certain reference value for the coal pillar recovery working face under similar geological conditions.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD325

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