矿业安全与环保
礦業安全與環保
광업안전여배보
MINING SAFETY & ENVIRONMENTAL PROTECTION
2014年
5期
62-64
,共3页
煤与瓦斯突出%区域性防突措施%上保护层%残余瓦斯压力%变形量
煤與瓦斯突齣%區域性防突措施%上保護層%殘餘瓦斯壓力%變形量
매여와사돌출%구역성방돌조시%상보호층%잔여와사압력%변형량
coal and gas outburst%regional outburst prevention measure%upper protective seam%residual gas pressure%deformation
汪家寨煤矿采取上保护层开采的区域性防治煤与瓦斯突出措施,为了有效考察防突效果,实测出被保护层残余瓦斯压力、煤体变形量等参数,通过采用理论分析和现场试验相结合的方法展开探讨分析,结果表明：保护层开采后,被保护层残余瓦斯压力下降到《防治煤与瓦斯突出规定》要求的安全开采范围；被保护层煤体绝对变形量3~55 mm,相对变形量0.49′10-3~13.18′10-3；保护层开采卸压效果明显,确保了被保护层安全开采的技术条件。
汪傢寨煤礦採取上保護層開採的區域性防治煤與瓦斯突齣措施,為瞭有效攷察防突效果,實測齣被保護層殘餘瓦斯壓力、煤體變形量等參數,通過採用理論分析和現場試驗相結閤的方法展開探討分析,結果錶明：保護層開採後,被保護層殘餘瓦斯壓力下降到《防治煤與瓦斯突齣規定》要求的安全開採範圍；被保護層煤體絕對變形量3~55 mm,相對變形量0.49′10-3~13.18′10-3；保護層開採卸壓效果明顯,確保瞭被保護層安全開採的技術條件。
왕가채매광채취상보호층개채적구역성방치매여와사돌출조시,위료유효고찰방돌효과,실측출피보호층잔여와사압력、매체변형량등삼수,통과채용이론분석화현장시험상결합적방법전개탐토분석,결과표명：보호층개채후,피보호층잔여와사압력하강도《방치매여와사돌출규정》요구적안전개채범위；피보호층매체절대변형량3~55 mm,상대변형량0.49′10-3~13.18′10-3；보호층개채사압효과명현,학보료피보호층안전개채적기술조건。
The regional outburst prevention measure by extracting the upper protective seam was taken in Wangjiazhai Coal Mine, the parameters such as the residual gas pressure of the protected seam, the deformation of coal body and so on were actually measured in order to effectively investigate the outburst prevention effect, and discussion and analysis were made on this measure through theoretical analysis and site tests. The results showed that after the extraction of the protective seam, the residual gas pressure of the protected seam dropped to the range for safe mining specified in“Coal Mine Safety Regulations”;the absolute deformation of the coal body of the protected seam was 3~55 mm and the relative deformation was 0. 49×10-3 ~13. 18×10-3;the pressure relief effect of the upper protective seam was obvious, this thus ensured the safe mining conditions of the protected seam.
