CAJ | 학술논문

河南刘河煤矿矿二1煤层上为厚度20～40m的第四系覆盖层，其中黏土层平均厚度为6.6m。由于第四系孔隙水含水组的四个含水段均为富水性中等及以上含水层，所以该层黏性土在受到上覆高压影响后能否控制顶板突水显得尤为关键，是解决新生界含水层下的安全开采的关键问题。通过室内实验测得该矿深度约在150m的4个钻孔土样的物理参数和土颗粒级配分析，按实验结果模拟深层黏性土，考虑受力面积、含水率和厚度3个影响黏性土破坏的主要因素，利用正交实验原理安排实验。结果表明，受力面积和含水率越大，黏性土的破坏程度增大；黏性土的厚度越大，破坏程度相应减小；3个因素中，受力面积的影响最大；当黏性土含水率在10%～25%，受力面积越小，厚度越大，黏性土不易发生破坏。该研究对预防和保证矿山安全生产具有重要意义。
하남류하매광광이1매층상위후도20～40m적제사계복개층，기중점토층평균후도위6.6m。유우제사계공극수함수조적사개함수단균위부수성중등급이상함수층，소이해층점성토재수도상복고압영향후능부공제정판돌수현득우위관건，시해결신생계함수층하적안전개채적관건문제。통과실내실험측득해광심도약재150m적4개찬공토양적물리삼수화토과립급배분석，안실험결과모의심층점성토，고필수력면적、함수솔화후도3개영향점성토파배적주요인소，이용정교실험원리안배실험。결과표명，수력면적화함수솔월대，점성토적파배정도증대；점성토적후도월대，파배정도상응감소；3개인소중，수력면적적영향최대；당점성토함수솔재10%～25%，수력면적월소，후도월대，점성토불역발생파배。해연구대예방화보증광산안전생산구유중요의의。
The 20~40m thick Quaternary overburden is overlaid on coal seam II1 in the Liuhe coalmine, Henan, in which, average thick-ness of clay beds is 6.6m. Since the 4 water-bearing sectors in Quaternary pore water aquifer group are all aquifers with medium water yield property and even higher. Thus, if the clayey soil can withstand roof water inrush under impact from overhead high pressure is cru-cial, that is key problem to solve safe mining under Cenozoic aquifers. Through laboratory physical parameter and soil grain size tests of 4 soil core samples from depth about 150m, based on tested results simulated deep clayey soil, considering three main factors impact-ing clayey soil destruction including stressed area, specific moisture content and thickness, using orthogonal experiment principle to ar-range tests. The result has shown that the higher the stressed area and specific moisture content, the larger clayey soil destruction ex-tent; the larger the clayey soil thickness, the smaller the corresponding destruction extent. Among the three factors, impact from stressed area is the largest;when clayey soil specific moisture content is 10%~25%with smaller stressed area and larger thickness, de-struction of clayey soil is not easy to occur. The study has major significance in prevention of water disaster and to ensure safe mining.