煤层瓦斯含量测定方法优化及现场应用
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摘要
针对现有瓦斯含量测定过程中存在问题进行了分析,研制出了反循环定点快速取样装置,该装置包括取样钻头、双套管钻杆、双通道汽水龙头、煤样收集装置等。装置采用端头杆一端与取样钻头相连,另一端与双套管钻杆连接;通过钻机驱动双壁钻杆带动取样钻头旋转产生煤渣,利用压风在钻孔底形成压风涡流,将煤样带入双壁钻杆内管吹出进入采样装置。同时利用CHP50M煤层瓦斯含量快速测定仪对收集的煤样进行测定,通过对煤层瓦斯含量测定进行优化的现场应用结果表明:取样时间小于3 min,取样深度大于100 m,取样成功后3～5 min后立刻得到煤层瓦斯含量结果,优化了煤层瓦斯含量测定方法。
Against problems existing in gas content measurement process are analyzed,and developed a reverse circulation fixed-point fast sampling device,the device includes sampling drill,double casing pipe and double channel soda bibcock,coal sample collection device,etc. Device adopts end are connected to the sampling drill rod end at the other end connected to the double casing pipe,through the coal produced by the rotation of drill rig drive double-wall drill pipe sampling,use of compressed air at the end of drilling formation pressure wind vortex,will blow out coal sample into the double-wall drill pipe inner tube into the sampling device. Meanwhile CHP50 M coal seam gas content detector was used to collect the coal sample were measured,through the study of the optimization of coal bed gas content measurement of the field application results show that the sampling time is less than 3 min,sampling depth is more than 100 m,immediately after the success of the sample after 3 ～ 5 min to get coal bed gas content as a result.
Against problems existing in gas content measurement process are analyzed,and developed a reverse circulation fixed-point fast sampling device,the device includes sampling drill,double casing pipe and double channel soda bibcock,coal sample collection device,etc. Device adopts end are connected to the sampling drill rod end at the other end connected to the double casing pipe,through the coal produced by the rotation of drill rig drive double-wall drill pipe sampling,use of compressed air at the end of drilling formation pressure wind vortex,will blow out coal sample into the double-wall drill pipe inner tube into the sampling device. Meanwhile CHP50 M coal seam gas content detector was used to collect the coal sample were measured,through the study of the optimization of coal bed gas content measurement of the field application results show that the sampling time is less than 3 min,sampling depth is more than 100 m,immediately after the success of the sample after 3 ～ 5 min to get coal bed gas content as a result.
引文
[1]马合意,王兆丰,王晋.一种新的煤层瓦斯含量测定方法的研究[J].煤,2010(9):18-21.
[2]王震宇,王佑安.煤层瓦斯含量测定方法评述[J].煤矿安全,2012(10):129-132.
[3]中国人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会. GB/T23250—2009煤层瓦斯含量井下直接测定方法[S].北京:中国标准出版社,2009.
[4]俞启香.矿井瓦斯防治[M].徐州:中国矿业大学出版社,1992.
[5]邹银辉,吕贵春,张庆华.瓦斯含量法预测突出危险性的试验研究[J].矿业安全与环保,2007,34(4):4-6.
[6]王耀锋.煤层原始瓦斯含量测定方法及误差影响因素研究[D].阜新:辽宁工程技术大学,2005.
[7]中国人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会. GB/T 23250—2009煤矿井下煤层瓦斯含量直接测定方法[S].北京:中国标准出版社,2009.
[8]黄鹤,王春光,苏伟伟.井下压风定点快速取样装置[C]//煤炭安全/绿色开采灾害防治新技术——2016年全国煤矿安全学术年会论文集.沈阳:中国煤炭学会煤矿安全专业委员会,2016.
[9]杨宏民,王兆丰.井下便携式煤层瓦斯含量快速测定仪的应用[J].煤炭科学技术,2013(9):159-162.YANG H M,WANG Z F. Application of gas content rapid determination apparatus in underground portable coal seam[J]. Coal Science and Technology,2013(9):159-162.
[2]王震宇,王佑安.煤层瓦斯含量测定方法评述[J].煤矿安全,2012(10):129-132.
[3]中国人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会. GB/T23250—2009煤层瓦斯含量井下直接测定方法[S].北京:中国标准出版社,2009.
[4]俞启香.矿井瓦斯防治[M].徐州:中国矿业大学出版社,1992.
[5]邹银辉,吕贵春,张庆华.瓦斯含量法预测突出危险性的试验研究[J].矿业安全与环保,2007,34(4):4-6.
[6]王耀锋.煤层原始瓦斯含量测定方法及误差影响因素研究[D].阜新:辽宁工程技术大学,2005.
[7]中国人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会. GB/T 23250—2009煤矿井下煤层瓦斯含量直接测定方法[S].北京:中国标准出版社,2009.
[8]黄鹤,王春光,苏伟伟.井下压风定点快速取样装置[C]//煤炭安全/绿色开采灾害防治新技术——2016年全国煤矿安全学术年会论文集.沈阳:中国煤炭学会煤矿安全专业委员会,2016.
[9]杨宏民,王兆丰.井下便携式煤层瓦斯含量快速测定仪的应用[J].煤炭科学技术,2013(9):159-162.YANG H M,WANG Z F. Application of gas content rapid determination apparatus in underground portable coal seam[J]. Coal Science and Technology,2013(9):159-162.