中国安全生产科学技术
中國安全生產科學技術
중국안전생산과학기술
JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY
2014年
4期
24-30
,共7页
贾天让%闫江伟%王蔚%张子敏
賈天讓%閆江偉%王蔚%張子敏
가천양%염강위%왕위%장자민
瓦斯赋存%构造控制%构造演化%瓦斯地质图%瓦斯分带
瓦斯賦存%構造控製%構造縯化%瓦斯地質圖%瓦斯分帶
와사부존%구조공제%구조연화%와사지질도%와사분대
gas occurrence%tectonic control%tectonic evolution%gas-geology map%zone-dividing of gas occurrence
瓦斯赋存规律认识不清,是导致煤矿瓦斯突出灾害频发的根本原因。应用瓦斯赋存地质构造逐级控制理论,结合辽宁省煤矿瓦斯地质图编制资料,分析了全省瓦斯赋存构造控制规律,进行了瓦斯分带划分。研究结果表明:印支运动(主幕),在形成一系列EW向、NE向和NW向断裂褶皱带过程中,煤体破坏,形成构造煤。燕山运动,形成了一系列NNE向、NE向的褶皱和逆冲推覆构造,与EW向构造相叠加,构造应力集中,有利于瓦斯突出;同时,岩浆侵入煤系地层使煤变质程度增高,生烃能力增强。喜马拉雅运动时期,挤压作用逐步被拉张取代,拉张裂隙作用有利于瓦斯部分释放。将辽宁省煤矿瓦斯赋存分布划分4个高突瓦斯带,即阜新-铁岭高突瓦斯带、抚顺-沈北高突瓦斯带、北票-南票高突瓦斯带和红阳-本溪高突瓦斯带。
瓦斯賦存規律認識不清,是導緻煤礦瓦斯突齣災害頻髮的根本原因。應用瓦斯賦存地質構造逐級控製理論,結閤遼寧省煤礦瓦斯地質圖編製資料,分析瞭全省瓦斯賦存構造控製規律,進行瞭瓦斯分帶劃分。研究結果錶明:印支運動(主幕),在形成一繫列EW嚮、NE嚮和NW嚮斷裂褶皺帶過程中,煤體破壞,形成構造煤。燕山運動,形成瞭一繫列NNE嚮、NE嚮的褶皺和逆遲推覆構造,與EW嚮構造相疊加,構造應力集中,有利于瓦斯突齣;同時,巖漿侵入煤繫地層使煤變質程度增高,生烴能力增彊。喜馬拉雅運動時期,擠壓作用逐步被拉張取代,拉張裂隙作用有利于瓦斯部分釋放。將遼寧省煤礦瓦斯賦存分佈劃分4箇高突瓦斯帶,即阜新-鐵嶺高突瓦斯帶、撫順-瀋北高突瓦斯帶、北票-南票高突瓦斯帶和紅暘-本溪高突瓦斯帶。
와사부존규률인식불청,시도치매광와사돌출재해빈발적근본원인。응용와사부존지질구조축급공제이론,결합요녕성매광와사지질도편제자료,분석료전성와사부존구조공제규률,진행료와사분대화분。연구결과표명:인지운동(주막),재형성일계렬EW향、NE향화NW향단렬습추대과정중,매체파배,형성구조매。연산운동,형성료일계렬NNE향、NE향적습추화역충추복구조,여EW향구조상첩가,구조응력집중,유리우와사돌출;동시,암장침입매계지층사매변질정도증고,생경능력증강。희마랍아운동시기,제압작용축보피랍장취대,랍장렬극작용유리우와사부분석방。장요녕성매광와사부존분포화분4개고돌와사대,즉부신-철령고돌와사대、무순-침북고돌와사대、북표-남표고돌와사대화홍양-본계고돌와사대。
Unclear understanding of the gas occurrence rule is a root cause of frequent gas outburst disasters .Based on theory of gas occurrence tectonic level control , and combining with datum about gas-geology map of Liaoning Province , the tectonic-level-control rule and zone-dividing of gas occurrence were discussed .The results showed that tectonic coal formed during the forming of EW , NE and NW faults and folds which were controlled by Indosini-an movement .NNE, NE folds and overthrust formed during Yanshan movement , through compounding with the EW geological structure , it caused the tectonic concentrated stress which is prone to coal and gas outburst .At the same time , Yanshanian magmatism increased coal metamorphism and the hydrocarbon productivity of coal was enhanced . During Himalayan movement , tectonic compression was replaced gradually by tectonic extension , which was benefi-cial to gas release .Coalmine gas occurrence and gas distribution in Liaoning Province were divided into four high and outburst zones , such as Fuxin-Tieling, Beipiao-Nanpiao and Hong Yang -Benxi.