Manage of rock burst in mine with great mining depth partial extraction and strong roof face 煤層采場頂板活動變化及綜采面支護強度初探
Standard practice for preparation of natural - matrix sediment reference samples for major and trace inorganic constituents analysis by partial extraction procedures 使用部分萃取法的大量和微量無機成分分析用天然雜礦石沉淀物標樣制備的標準實施規(guī)范
The effect of overburden separation dynamic development under key stratum on grouting for bed separation space was analyzed , in order to deal with the problem that the current bed separation growing technology can not prevent the key stratum from breakage , put forward the isolated section - grouting technology for overburden bed separation space , integrated the virtue of growing for bed separation space and partial extraction , the bed separation grouting bodies , key stratum and isolated section pillars were made to constitute the load - carrying body all together , and to reach the purpose of reducing subsidence effectively , increase the coal seam extraction ratio , and accelerate the development of isolated section - growing technology for overburden bed separation space 摘要分析了關鍵層下離層動態(tài)發(fā)育對離層充填的影響,針對目前離層區(qū)充填工藝不能阻止覆巖關鍵層初次破斷的問題,提出了“覆巖離層分區(qū)隔離注漿充填”技術,它綜合離層充填與條帶開采技術的優(yōu)點,通過離層區(qū)充填置換或減小分區(qū)隔離煤柱寬度,使“離層區(qū)充填體關鍵層分區(qū)隔離煤柱”形成共同承載體,從而達到有效減緩地面沉降的目的,提高了煤層采出率,促進了覆巖離層充填減沉技術的發(fā)展。
The predication technical methods consist of experience - analogy , geochemical techniques ( e . g . geo - gas method and partial extraction of mobile forms ) , geophysical techniques ( e . g . radioactivity survey , ground electromagnetism , earthquake technique , hole geophysical survey ) , remote sensing , gis , and comprehensive information prognosis methods 預測技術方法有經(jīng)驗類比法,地球化學方法(如地氣法、活動態(tài)偏提取技術) ,地球物理方法(如放射性測量、地面電磁法、地震法和井中物探) ,以及遙感技術、 gis技術和綜合信息礦產(chǎn)預測方法等。