昆明理工大学学报（自然科学版）
昆明理工大學學報（自然科學版）
곤명리공대학학보（자연과학판）
JOURNAL OF KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY（SCIENCE AND TECHNOLOGY）
2014年
2期
28-33
,共6页
深部开采%地应力测量%围岩稳定性%套孔应力解除法%数值分析
深部開採%地應力測量%圍巖穩定性%套孔應力解除法%數值分析
심부개채%지응력측량%위암은정성%투공응력해제법%수치분석
deep mining%in -situ stress measurement%stability of surrounding rocks%boring stress -relief method%numerical analysis
地应力是影响矿山地下工程围岩稳定性的重要因素之一。为了解狮子山矿区应力状态及分布规律，应用空心包体三轴应变计，采用套孔应力解除法对矿区开展了三维地应力实测。通过实测获得该矿区深部4个中段4个测点的三维应力状态。对实测数据系统分析，获得了矿区地应力场的分布特征，验证了狮子山矿区地应力场以水平构造应力为主导，最大水平主应力的走向为NNW-SSE向，最大、最小及中间主应力随深度基本呈线性增长关系。基于深部三维地应力实测结果和工程地质条件，采用FLAC3D软件分析了巷道轴向与最大主应力方向不同情况下巷道围岩的破坏情况。研究成果为狮子山矿区深部开拓工程和采场的合理布置提供了可靠的依据，对矿山后续安全高效生产具有重要的指导意义。
地應力是影響礦山地下工程圍巖穩定性的重要因素之一。為瞭解獅子山礦區應力狀態及分佈規律，應用空心包體三軸應變計，採用套孔應力解除法對礦區開展瞭三維地應力實測。通過實測穫得該礦區深部4箇中段4箇測點的三維應力狀態。對實測數據繫統分析，穫得瞭礦區地應力場的分佈特徵，驗證瞭獅子山礦區地應力場以水平構造應力為主導，最大水平主應力的走嚮為NNW-SSE嚮，最大、最小及中間主應力隨深度基本呈線性增長關繫。基于深部三維地應力實測結果和工程地質條件，採用FLAC3D軟件分析瞭巷道軸嚮與最大主應力方嚮不同情況下巷道圍巖的破壞情況。研究成果為獅子山礦區深部開拓工程和採場的閤理佈置提供瞭可靠的依據，對礦山後續安全高效生產具有重要的指導意義。
지응력시영향광산지하공정위암은정성적중요인소지일。위료해사자산광구응력상태급분포규률，응용공심포체삼축응변계，채용투공응력해제법대광구개전료삼유지응력실측。통과실측획득해광구심부4개중단4개측점적삼유응력상태。대실측수거계통분석，획득료광구지응력장적분포특정，험증료사자산광구지응력장이수평구조응력위주도，최대수평주응력적주향위NNW-SSE향，최대、최소급중간주응력수심도기본정선성증장관계。기우심부삼유지응력실측결과화공정지질조건，채용FLAC3D연건분석료항도축향여최대주응력방향불동정황하항도위암적파배정황。연구성과위사자산광구심부개탁공정화채장적합리포치제공료가고적의거，대광산후속안전고효생산구유중요적지도의의。
In-situ stress is one of the most important influencing factors to the stability of surrounding rocks in mines. In order to understand the law and distribution state of Shizishan copper mine,the mine field measure-ment is systematically carried out by boring stress-relief method with hollow inclusion triaxial strain gauge. In-situ stress state of four measurement points is obtained by measuring. Distribution characteristics of in -situ stress field are obtained by systematically analyzing the testing data. It shows that Shizishan mining area is affect-ed by horizontal tectonic stress field. The maximum horizontal principal stress is oriented in NNW-SSE direc-tion. The maximum and minimum horizontal principal stress and vertical principal stress are almost linearly in-creased with depth. Based on in-situ stresses and specific engineering geological condition,a model is estab-lished to analyze the stability of roadway surrounding rocks of different orientations by using FLAC3 D program.The research result provides a reliable basis to determine arrangement of roadways and mining stope in deep min-ing. The conclusion has guiding significance for the safe and effective production of this copper mine.
