山西焦煤科技
山西焦煤科技
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SHANXI COKING COAL SCIENCE & TECHNOLOGY
2014年
2期
32-34
,共3页
孤岛煤柱%底板巷道%数值模拟%差异化支护
孤島煤柱%底闆巷道%數值模擬%差異化支護
고도매주%저판항도%수치모의%차이화지호
Island coal pillar%Floor tunnel%Numerical simulation%Differentiation support
某矿Ⅳ1专用回风道受上煤层工作面开采形成的孤岛煤柱影响，巷道变形破坏剧烈，严重影响矿井安全生产。根据此巷道地质条件，运用FLAC2D数值模拟软件，分析了巷道与煤柱不同空间位置关系时所受底板应力影响。结合数值模拟结果及现场实际勘察情况，提出了差异化支护技术方案，并进行现场工业性实验。实测结果表明，支护后巷道变形得到有效地控制。
某礦Ⅳ1專用迴風道受上煤層工作麵開採形成的孤島煤柱影響，巷道變形破壞劇烈，嚴重影響礦井安全生產。根據此巷道地質條件，運用FLAC2D數值模擬軟件，分析瞭巷道與煤柱不同空間位置關繫時所受底闆應力影響。結閤數值模擬結果及現場實際勘察情況，提齣瞭差異化支護技術方案，併進行現場工業性實驗。實測結果錶明，支護後巷道變形得到有效地控製。
모광Ⅳ1전용회풍도수상매층공작면개채형성적고도매주영향，항도변형파배극렬，엄중영향광정안전생산。근거차항도지질조건，운용FLAC2D수치모의연건，분석료항도여매주불동공간위치관계시소수저판응력영향。결합수치모의결과급현장실제감찰정황，제출료차이화지호기술방안，병진행현장공업성실험。실측결과표명，지호후항도변형득도유효지공제。
Under the influence of island coal pillar which forms by the upper coal seam working face was mine, a mineⅣ1 special return airway was damaged,seriously affected the mine safety production.According to the geolog-ical conditions of the roadway,using FLAC2D numerical simulation software,analyzed the affect of floor stress when roadway and coal pillar were at the different space position.Combined with the results of numerical simulation and ac-tual situation,put forward the differentiation support technology specifically,carried out the industrial test.The meas-ured result of supporting roadway showed that the tunnel deformation was controlled effectively.
