采矿与安全工程学报
採礦與安全工程學報
채광여안전공정학보
JOURNAL OF MINING AND SAFETY ENGINEERING
2014年
6期
963-968
,共6页
深部%高应力巷道%劈裂破坏%数值模拟
深部%高應力巷道%劈裂破壞%數值模擬
심부%고응력항도%벽렬파배%수치모의
deep level%roadway under high stress%splitting failure%numerical simulation
针对高地应力条件下出现的劈裂破坏这一特殊的工程地质现象，采用考虑闭合效应下基于曲线扩展路径的劈裂演化模型，通过FISH语言内嵌，运用FLAC软件进行巷道劈裂破坏数值模拟研究，得到了不同地质条件下劈裂破坏深度、面积的演化图；分析了埋深、侧压力系数、体积模量、剪切模量对巷道劈裂破坏的影响规律。研究成果可为高地应力下地下工程的稳定性评价及支护设计提供参考。
針對高地應力條件下齣現的劈裂破壞這一特殊的工程地質現象，採用攷慮閉閤效應下基于麯線擴展路徑的劈裂縯化模型，通過FISH語言內嵌，運用FLAC軟件進行巷道劈裂破壞數值模擬研究，得到瞭不同地質條件下劈裂破壞深度、麵積的縯化圖；分析瞭埋深、側壓力繫數、體積模量、剪切模量對巷道劈裂破壞的影響規律。研究成果可為高地應力下地下工程的穩定性評價及支護設計提供參攷。
침대고지응력조건하출현적벽렬파배저일특수적공정지질현상，채용고필폐합효응하기우곡선확전로경적벽렬연화모형，통과FISH어언내감，운용FLAC연건진행항도벽렬파배수치모의연구，득도료불동지질조건하벽렬파배심도、면적적연화도；분석료매심、측압력계수、체적모량、전절모량대항도벽렬파배적영향규률。연구성과가위고지응력하지하공정적은정성평개급지호설계제공삼고。
In response to the splitting failure which is a special engineering geological phenomenon under high in-situ stresses, splitting model based on curve expanding path involving closure effect has been applied. This model is programmed by FISH functions and embedded into FLAC software. Nu-merical simulation of splitting failure of roadway has been conducted by using FLAC software. The di-agrams of splitting failure evolution with respect to the depth and area under different geological condi-tions have been obtained. The impacts of depth, lateral pressure coefficient, bulk modulus and shear modulus on splitting failure have also been analyzed. The research can offer reliable references to the evaluation of stability of underground structures and the design of support under high in-situ stresses.
