南水北调与水利科技
南水北調與水利科技
남수북조여수리과기
SOUTH-TO-NORTH WATER
2014年
5期
45-49
,共5页
地应力场%反演分析%优化粒子群%侧压系数
地應力場%反縯分析%優化粒子群%側壓繫數
지응력장%반연분석%우화입자군%측압계수
ground stress field%inversion analysis%improved particle sw arm opt imization%lateral pressure coefficient
在地下洞室围岩稳定分析计算中，地应力研究区域较大，而测量的已知参数信息量有限，在此基础上进行的数值分析往往与实际存在一定的偏差。根据地应力实测资料及地质构造条件，基于改进的粒子群优化算法，建立了初始地应力场反演模型，反演结果与实测结果吻合较好，为进一步分析厂房区围岩的稳定性提供了参考。
在地下洞室圍巖穩定分析計算中，地應力研究區域較大，而測量的已知參數信息量有限，在此基礎上進行的數值分析往往與實際存在一定的偏差。根據地應力實測資料及地質構造條件，基于改進的粒子群優化算法，建立瞭初始地應力場反縯模型，反縯結果與實測結果吻閤較好，為進一步分析廠房區圍巖的穩定性提供瞭參攷。
재지하동실위암은정분석계산중，지응력연구구역교대，이측량적이지삼수신식량유한，재차기출상진행적수치분석왕왕여실제존재일정적편차。근거지응력실측자료급지질구조조건，기우개진적입자군우화산법，건립료초시지응력장반연모형，반연결과여실측결과문합교호，위진일보분석엄방구위암적은정성제공료삼고。
In the calculation of the st abilit y of surrounding rock in the underground caverns, the study area of underground st ress is usually large. H ow ever, the informat ion of know n parameters is limited; therefore the numerical analysis results on this basis can result in some deviations from the reality. Based on t he measured data of underground stress and geological structure, and improved particle swarm optimization algorithm, an inversion model of the init ial st ress field was developed. The inversion re-sults w ere in good agreement w ith the measured results, w hich can provide reference for t he further analysis of the surrounding rock stability in the plant area.
