昆明冶金高等专科学校学报
昆明冶金高等專科學校學報
곤명야금고등전과학교학보
JOURNAL OF KUNMING METALLURGY COLLEGE
2014年
5期
5-8
,共4页
冲击矿压%煤层厚度变化%矿震规律%卸压防冲
遲擊礦壓%煤層厚度變化%礦震規律%卸壓防遲
충격광압%매층후도변화%광진규률%사압방충
rock burst%thickness variation of coal seam%seismic activity rules%stress release measurements
为更有效地预防采掘期间深部煤层分叉或厚度变化区域冲击矿压的发生，以某矿回采工作面为工程实践背景，基于矿震活动在能量释放与震动频次方面的变化特征及在空间上的分布规律，分析了煤层分叉及煤层厚度变化对冲击矿压的影响。结果表明：在大能量矿震发生前，日震动频次连续处于高位而日释放能量较长时间维持低水平；在煤层厚度变化区域，矿震活动活跃，容易发生大能量矿震。通过对矿震进行“时间－空间”分析，可以确定矿震集中区域和能量积聚时间段，从而可对煤层厚度变化影响区域进行有针对性的卸压防冲工作。
為更有效地預防採掘期間深部煤層分扠或厚度變化區域遲擊礦壓的髮生，以某礦迴採工作麵為工程實踐揹景，基于礦震活動在能量釋放與震動頻次方麵的變化特徵及在空間上的分佈規律，分析瞭煤層分扠及煤層厚度變化對遲擊礦壓的影響。結果錶明：在大能量礦震髮生前，日震動頻次連續處于高位而日釋放能量較長時間維持低水平；在煤層厚度變化區域，礦震活動活躍，容易髮生大能量礦震。通過對礦震進行“時間－空間”分析，可以確定礦震集中區域和能量積聚時間段，從而可對煤層厚度變化影響區域進行有針對性的卸壓防遲工作。
위경유효지예방채굴기간심부매층분차혹후도변화구역충격광압적발생，이모광회채공작면위공정실천배경，기우광진활동재능량석방여진동빈차방면적변화특정급재공간상적분포규률，분석료매층분차급매층후도변화대충격광압적영향。결과표명：재대능량광진발생전，일진동빈차련속처우고위이일석방능량교장시간유지저수평；재매층후도변화구역，광진활동활약，용역발생대능량광진。통과대광진진행“시간－공간”분석，가이학정광진집중구역화능량적취시간단，종이가대매층후도변화영향구역진행유침대성적사압방충공작。
In order to effectively prevent the rock burst disaster occurred in the area of the variation in thickness of the deep coal seam during mining, a mine stope was considered as engineering practice background.The influence of coal bifurcation and coal seam thickness variation to rock burst was ana-lyzed using the distribution of space and the varied features of the energy releasing and vibration frequen-cy in the seismic activities.The results showed that there would be high vibration frequency and low lev-els of energy releasing before the intense seismic activity occurred.Mine earthquake is active and prone to large energy mineral earthquake in changes in the area of coal seam thickness.The analysis of the“time-space”of mine earthquake can determine the concentration of mine earthquake region and ener-gy accumulation period.Thereby targeted relief scour protection work can be taken in seam thickness variation affected areas.
