中国煤炭地质
中國煤炭地質
중국매탄지질
COAL GEOLOGY OF CHINA
2014年
6期
26-29
,共4页
穿层钻孔%瓦斯地质%数学模型%煤厚变化%小断层
穿層鑽孔%瓦斯地質%數學模型%煤厚變化%小斷層
천층찬공%와사지질%수학모형%매후변화%소단층
Crossing holes%Gas geology%Mathematical model%Coal thickness change%Minor fault
针对回采工作面煤与瓦斯突出事故多发于煤厚变化带和隐伏小构造附近，研究了利用大量瓦斯抽采钻孔探明工作面瓦斯地质信息的技术途径。结合试验煤层工作面抽采钻孔施工设计，对抽采钻孔信息进行处理、建立数学模型，利用计算机作图软件对煤层厚度变化规律、隐伏小断层立体呈现，从而达到利用穿层抽采钻孔探明工作面前方隐伏瓦斯地质信息的目的。试验结果表明，工作面煤厚变化部位、遭遇断层位置与预测结果基本一致，回采阶段未出现瓦斯异常情况。
針對迴採工作麵煤與瓦斯突齣事故多髮于煤厚變化帶和隱伏小構造附近，研究瞭利用大量瓦斯抽採鑽孔探明工作麵瓦斯地質信息的技術途徑。結閤試驗煤層工作麵抽採鑽孔施工設計，對抽採鑽孔信息進行處理、建立數學模型，利用計算機作圖軟件對煤層厚度變化規律、隱伏小斷層立體呈現，從而達到利用穿層抽採鑽孔探明工作麵前方隱伏瓦斯地質信息的目的。試驗結果錶明，工作麵煤厚變化部位、遭遇斷層位置與預測結果基本一緻，迴採階段未齣現瓦斯異常情況。
침대회채공작면매여와사돌출사고다발우매후변화대화은복소구조부근，연구료이용대량와사추채찬공탐명공작면와사지질신식적기술도경。결합시험매층공작면추채찬공시공설계，대추채찬공신식진행처리、건립수학모형，이용계산궤작도연건대매층후도변화규률、은복소단층입체정현，종이체도이용천층추채찬공탐명공작면전방은복와사지질신식적목적。시험결과표명，공작면매후변화부위、조우단층위치여예측결과기본일치，회채계단미출현와사이상정황。
According to the phenomenon that coal and gas outburst accident mostly strike in coal seam where thickness change belt or minor geological structures grown, this paper studied the technical way of ascertaining gas geology information based on a large number of gas drainage holes implemented in coal seam. With analyzing the information of gas drainage holes of the experiment coalface, we build the mathematical model of gas drainage holes, and rendered the law of coal seam thickness changing and the minor concealed fault three-dimensionally by computer drawing software. Through on-site validation, it was basically consistent with the forecasting re-sults that coal seam thickness changes position and fault location, and gas drainage rate was greatly increased and gas emission of ex-traction stage was normal.
