价值工程
價值工程
개치공정
VALUE ENGINEERING
2015年
13期
55-56,57
,共3页
大采高%支承压力%数值模拟
大採高%支承壓力%數值模擬
대채고%지승압력%수치모의
large cutting height%abutment pressure%numerical simulation
为了获得大采高工作面超前支承压力分布规律，采用FLAC3D数值仿真软件对工作面推进过程中煤岩体内支承压力分布进行了数值模拟，得出了随着工作面向前推进距离的增加，支承压力峰值前移、应力集中系数增大、影响范围扩大。支承压力分布规律能够为煤壁片帮、巷道底鼓的机理与防治提供理论指导。
為瞭穫得大採高工作麵超前支承壓力分佈規律，採用FLAC3D數值倣真軟件對工作麵推進過程中煤巖體內支承壓力分佈進行瞭數值模擬，得齣瞭隨著工作麵嚮前推進距離的增加，支承壓力峰值前移、應力集中繫數增大、影響範圍擴大。支承壓力分佈規律能夠為煤壁片幫、巷道底鼓的機理與防治提供理論指導。
위료획득대채고공작면초전지승압력분포규률，채용FLAC3D수치방진연건대공작면추진과정중매암체내지승압력분포진행료수치모의，득출료수착공작면향전추진거리적증가，지승압력봉치전이、응력집중계수증대、영향범위확대。지승압력분포규률능구위매벽편방、항도저고적궤리여방치제공이론지도。
Aimed at getting out the law of abutment pressure distribution in the large cutting height workface, the paper simulates stress field distribution in the coal and rock mass in the coal mined by FLAC3D, gets out that with the increase of the advancing distance in working face, the maximum value of abutment pressure shifts ahead, the concentration factor of pressure improves, the range of influence increases. The law of abutment pressure distribution could provide theoretical guidance for theory and controlling of coal wall caving and floor heave of roadway.
