CAJ | 학술논문

为了探究底板岩性及组合结构这一因素对采动底板变形破坏深度的影响，通过现场大量实测资料的整理分析，获得了类似均质底板和软硬岩不同组合结构底板在采动矿压作用下差异性变形破坏特征。研究结果表明：1)类似均质底板变形破坏规律相对简单，底板采动变形破坏深度主要受制于底板岩体的抗压破坏强度，总体上这种类型底板变形破坏程度具有自上至下呈由强及弱的渐次性变化特点；2)软硬岩夹层或互层底板采动变形破坏特征比较复杂，这种组合结构对底板采动变形破坏深度和程度均具有明显的控制作用，其中软弱夹层对底板破坏深度具有较强的约束效应，即软岩对上覆硬岩起到了重要的“褥垫效应”，对下伏岩层产生“应力扩散效应”。研究结果揭示了底板岩性及组合结构对变形破坏深度具有重要的制约作用，对巷道支护和底板水防治均具有重要的理论和实际意义。
위료탐구저판암성급조합결구저일인소대채동저판변형파배심도적영향，통과현장대량실측자료적정리분석，획득료유사균질저판화연경암불동조합결구저판재채동광압작용하차이성변형파배특정。연구결과표명：1)유사균질저판변형파배규률상대간단，저판채동변형파배심도주요수제우저판암체적항압파배강도，총체상저충류형저판변형파배정도구유자상지하정유강급약적점차성변화특점；2)연경암협층혹호층저판채동변형파배특정비교복잡，저충조합결구대저판채동변형파배심도화정도균구유명현적공제작용，기중연약협층대저판파배심도구유교강적약속효응，즉연암대상복경암기도료중요적“욕점효응”，대하복암층산생“응력확산효응”。연구결과게시료저판암성급조합결구대변형파배심도구유중요적제약작용，대항도지호화저판수방치균구유중요적이론화실제의의。
In order to study the relationship between lithology and its composite structure and defor-mation and failure depth, based on these comprehensive field test data, restricting function of deforma-tion and failure depth to mining coal seam floor by lithology and its composite structure is discussed. The obvious difference characteristics are obtained on homogeneous floor and soft and hard rock com-posite structure floor. The study results show as follows:1) The law of deformation and failure of ho-mogeneous floor is relatively simple;the depth of deformation and failure of mining floor is controlled by the strength of floor, and has a gradual characteristics from strong to weak below floor on the whole;2) The deformation and failure floor of soft and hard rock composite structure is complex. There is an obvious restrictive function to the depth of failure floor and deformation degree by the composite structure, weak intercalation being the main weak surface which has strong constraint effect to the depth of failure floor. Namely, soft rock plays an important the effect of the cushion for overlying hard rock, and can produce stress diffusion effect for underlying hard rock. The results show that the floor of li-thology and its composite structure has an important restrictive function on the deformation and failure of mining floor depth, and also has theoretical and practical significance to supporting tunnel and pre-venting water-inrush from mining floor.