煤矿开采
煤礦開採
매광개채
COAL MINING TECHNOLOGY
2014年
3期
108-110,103
,共4页
浅埋深%两硬煤层%支承压力
淺埋深%兩硬煤層%支承壓力
천매심%량경매층%지승압력
shallow buried depth%two-hard coal-seam%abutment pressure
为研究浅埋两硬煤层综放面支承压力的分布特征，用钻孔应力计对安家岭矿4102工作面回采巷道两侧煤体内的应力进行了实测。研究表明：浅埋两硬煤层综放面超前支承压力、后方支承压力及侧向支承压力的影响范围较大，超前支承压力峰值位置到煤壁以及侧方支承压力峰值点到煤柱侧帮的距离都较小（3～4m），这是与普通煤层综放面超前支承压力峰值点前移及侧方支承压力峰值远离巷帮的规律不同之处，侧方支承压力峰值出现在工作面后方，在工作面采动影响稳定后，煤柱侧巷帮煤体内会出现明显的破碎垮落区、塑性区和弹性区。
為研究淺埋兩硬煤層綜放麵支承壓力的分佈特徵，用鑽孔應力計對安傢嶺礦4102工作麵迴採巷道兩側煤體內的應力進行瞭實測。研究錶明：淺埋兩硬煤層綜放麵超前支承壓力、後方支承壓力及側嚮支承壓力的影響範圍較大，超前支承壓力峰值位置到煤壁以及側方支承壓力峰值點到煤柱側幫的距離都較小（3～4m），這是與普通煤層綜放麵超前支承壓力峰值點前移及側方支承壓力峰值遠離巷幫的規律不同之處，側方支承壓力峰值齣現在工作麵後方，在工作麵採動影響穩定後，煤柱側巷幫煤體內會齣現明顯的破碎垮落區、塑性區和彈性區。
위연구천매량경매층종방면지승압력적분포특정，용찬공응력계대안가령광4102공작면회채항도량측매체내적응력진행료실측。연구표명：천매량경매층종방면초전지승압력、후방지승압력급측향지승압력적영향범위교대，초전지승압력봉치위치도매벽이급측방지승압력봉치점도매주측방적거리도교소（3～4m），저시여보통매층종방면초전지승압력봉치점전이급측방지승압력봉치원리항방적규률불동지처，측방지승압력봉치출현재공작면후방，재공작면채동영향은정후，매주측항방매체내회출현명현적파쇄과락구、소성구화탄성구。
In order to obtain abutment pressure distribution rule of full-mechanized caving mining in two-hard coal-seam, borehole stress meters were installed at two-side of mining roadway of 4102 mining face, Anjialing Colliery.Results showed that advanced , rear and side abutment pressure influence range were larger , and distance from advanced abutment pressure summit value to coal-wall, and distance from side abutment pressure summit value to coal-wall were smaller than those in common full-mechanized caving mining face.Side abutment pressure summit value occurred before mining face.When mining influence became stable , obvious cracked caving zone, plastic zone and elastic zone would occurred in sides coal-body of roadway beside coal-pillar.
