许疃煤矿3238工作面地面瓦斯采动井工程招标

许疃煤矿3238工作面地面瓦斯采动井工程招标
受淮北矿业股份有限公司许疃煤矿（简称“招标人”）委托，对“许疃煤矿3238工作面地面瓦斯采动井工程”进行招标，欢迎具备条件的国内投标人参加投标。                                                                                                                    
一、项目概况                                                                                                                    
1、项目编号：HPZB-2021-024                                                                                                                    
2、项目名称：许疃煤矿3238工作面地面瓦斯采动井工程                                                                                                                    
3、项目地点：许疃煤矿                                                                                                                    
4、资金来源：自筹资金                                                                                                                    
5、标段划分：一个标段                                                                                                                    
6、投资概算约：550万元                                                                                                                    
7、工程工期：60日历天                                                                                                                    
二、招标内容                                                                                                                    
1、项目概况                                                                                                                    
许疃煤矿为煤与瓦斯突出矿井，主采32、71、72、82、101（许疃断层以北）煤层，其中32煤层为突出煤层。33采区32煤层标高-645m以深区域为突出危险区。采区瓦斯主要来源于本煤层。 为有效抽采工作面裂隙带瓦斯，坚持“高负压、大管径、大流量、全覆盖”的原则，优化地面瓦斯抽采井结构，增大钻孔孔径，提高单井抽采流量，加大对32煤层裂隙带瓦斯抽采力度，进一步提高瓦斯抽采量，降低工作面瓦斯涌出量。                                                                                                                        
2、项目总体要求：                                                                                                                    
3238工作面地面瓦斯抽采井共3口。沿工作面煤层走向间距50～120m布置，钻井位于煤层倾斜方向距保护层工作面回风巷65～70m左右处，其中1#钻井走向布置在距工作面切眼50m左右，15#地面井距收作线约79m。                                                                                                                    
瓦斯井一开D508mm孔径，套管选用Ф406*11.13mm（无缝钢管），至基岩界面下30m，管底端安装管外封隔器（1m），采用普通水泥固井，声幅测井评价固井质量，套管采用双坡口对焊方式连接，焊口探伤检测；                                                                                                                    
二开D375mm孔径，套管选用Ф273×11.43mm和Ф273×15.11mm套管（N80，P110丝扣连接），管底端安装管外封隔器（1m），管路连接采用石油标准丝扣连接，一开套管焊缝与二开套管丝扣连接处错茬布置，增加强度。使用石油套管标准件（30m下一道套管扶正器，底部加装浮箍、浮鞋），使用G级水泥石油内插法固井，声幅测井评价固井质量；                                                                                                                    
三开D216mm孔径，钻进至32煤顶板上10～20m。D420mm掏穴至裂隙带中部，下Ф177.8×13.72mm花管和Ф177.8×13.72mm实管（N80，P110丝扣连接），管外设置3段不少于8m的管外封隔器，管路连接采用石油标准丝扣连接。                                                                                                                    
三开结束后洗井，下入井下成像仪至孔底窥孔，并保留影像资料。                                                                                                                    
具体内容详见招标文件                                                                                                                    
三、投标人资格                                                                                                                    
1、具有独立法人资格及有效的营业执照。                                                                                                                    
2、应具有地质勘查资质证书（固体矿产勘查或地质钻探甲级），并具有同类工程的施工业绩。                                                                                                                    
3、没有处于被责令停业、投标资格被取消，财产被接管、冻结、破产状态，最近三年内没有骗取中标和严重违约及发生重大质量事故（承诺函）。                                                                                                                    
4、本次招标不接受联合体投标                                                                                                                    
四、招标文件获取                                                                                                                    
1、获取时限：2021年3月 17 日9时00分至2021年3月 22 日17时00分；                                                                                                                    
2、招标文件售价：每份500元，售后不退。                                                                                                                    


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