CAJ | 학술논문

在厚松散含水层下采煤时，由于含水层可传递上覆表土层的载荷，导致工作面容易产生溃砂、突水事故．为了避免在回采过程中发生溃砂、突水事故，结合朱仙庄煤矿864工作面的实际条件，建立复合隔水关键层的力学模型，采用数值模拟对厚松散含水层下特厚煤层分别在上分层2．5，3．0，3．5，4．0m综采、下分层6．5，6．0，5．5，5．0m综放和一次性全厚放顶煤进行开采，确定安全开采的方案．研究结果表明：在上分层为3m下分层6综放时，裂缝带发育的高度最低、覆岩破坏的最终形态最缓和，在工作面回采过程中最为安全．
재후송산함수층하채매시，유우함수층가전체상복표토층적재하，도치공작면용역산생궤사、돌수사고．위료피면재회채과정중발생궤사、돌수사고，결합주선장매광864공작면적실제조건，건립복합격수관건층적역학모형，채용수치모의대후송산함수층하특후매층분별재상분층2．5，3．0，3．5，4．0m종채、하분층6．5，6．0，5．5，5．0m종방화일차성전후방정매진행개채，학정안전개채적방안．연구결과표명：재상분층위3m하분층6종방시，렬봉대발육적고도최저、복암파배적최종형태최완화，재공작면회채과정중최위안전．
Because of the load of the overlying alluvium can be passed by inrush accident happens easily on burst face when people are mining under thick aquifers, collapse of sand and water and unconsolidated aquifers. In order to avoid collapse of sand and water inrush accident occurred in the mining process, the project should combine the actual conditions of 864 in Zhuxianzhuang coal mine working face and establish mechanical models of composite riser critical layer. The numerical simulation for thick coal seam under thick and unconsolidated aquifer respectively is 2.5,3.0, 3.5,4.0 m mechanized mining in the up stratified, 6.5,6.0,5.5,5.0 m fully mechanized caving under the hierarchical and one - time full - thickness caving exploitation. The safety of mining programmes must be determined. Research results show that the situation of minimum crack development height, the most ease eventually forms on overburden failure and the safest about mine working face will appear when the numerical simulation is 3.0 m mechanized mining in the up stratified. 6.0 m fully mechanized caving under the hierarchical.