煤矿开采
煤礦開採
매광개채
COAL MINING TECHNOLOGY
2015年
4期
62-65
,共4页
杨柱龙%臧传伟%谭云亮%李建政
楊柱龍%臧傳偉%譚雲亮%李建政
양주룡%장전위%담운량%리건정
深部巷道%动静载荷%数值模拟%最大主应力%弹性应变能
深部巷道%動靜載荷%數值模擬%最大主應力%彈性應變能
심부항도%동정재하%수치모의%최대주응력%탄성응변능
deep roadway%static and dynamic load%numerical simulation%maximum principal stress%elastic strain energy
为了分析上部砾岩垮落对深部巷道产生的动力冲击影响,以某矿1410工作面为研究对象,采用FLAC3D 动力模拟部分,在模型的上部边界施加动力载荷,以模拟上部砾岩断裂对1410上平巷围岩稳定性的影响。通过数值模拟与理论分析得出掘进巷道在不同时刻的最大主应力与弹性应变能分布特征规律,与现场监测基本一致。及时掌握应力及弹性应变能积聚规律,能为矿山的安全开采提供理论基础。
為瞭分析上部礫巖垮落對深部巷道產生的動力遲擊影響,以某礦1410工作麵為研究對象,採用FLAC3D 動力模擬部分,在模型的上部邊界施加動力載荷,以模擬上部礫巖斷裂對1410上平巷圍巖穩定性的影響。通過數值模擬與理論分析得齣掘進巷道在不同時刻的最大主應力與彈性應變能分佈特徵規律,與現場鑑測基本一緻。及時掌握應力及彈性應變能積聚規律,能為礦山的安全開採提供理論基礎。
위료분석상부력암과락대심부항도산생적동력충격영향,이모광1410공작면위연구대상,채용FLAC3D 동력모의부분,재모형적상부변계시가동력재하,이모의상부력암단렬대1410상평항위암은정성적영향。통과수치모의여이론분석득출굴진항도재불동시각적최대주응력여탄성응변능분포특정규률,여현장감측기본일치。급시장악응력급탄성응변능적취규률,능위광산적안전개채제공이론기출。
In order to analyzing impact influence of conglomerate caving on deep roadway, dynamic load was applied on upper bound-ary of model to simulating the influence of conglomerate breakage on surrounding rock stability of 1410 upper roadway with FLAC3D . Numerical simulation and theoretical analysis obtained maximum principal stress and elastic strain energy distribution rule at different moments which was basically accordance with field monitoring.Timely obtaining stress and elastic strain energy accumulation rule could provide theoretical reference for safe mining.