保德煤矿抽采钻孔封孔工艺技术改进  

Prudential Extraction from Drilling Hole Sealing Technology Improvement in Baode Coal Mine

作　　者：常小军[1] 张林良 

机构地区：[1]神华神东煤炭集团保德煤矿,山西保德036600 [2]中煤科工集团重庆研究院有限公司,重庆400037

出　　处：《煤》2016年第3期1-2,6,共3页Coal

基　　金：国家自然科学基金资助项目(51144006);国家"973"计划资助项目(2012CB723104)

摘　　要：保德煤矿此前采用的封孔工艺为聚氨酯封孔,利用PVC管作为封孔管,管外径72 mm,管长6.5 m,封孔长度约4.2~5.5 m。该封孔工艺存在一定的缺陷,部分钻孔封孔试剂用量过少、封孔深度不够、封孔管前后端没有封堵装置等。通过分析对比水泥封孔和常规马丽散的封孔效果,瓦斯抽放浓度提高35%以上,同等条件下水泥封孔钻孔的抽采纯瓦斯量整体略高于常规马丽散封孔,并且水泥封孔价格相对较低,经济性好于马丽散封孔。Baode Coal Mine after the hole sealing technology for polyurethane sealing hole,using PVC pipes as a hole sealing pipe,tube diameter 72 mm,length 6 m,length of hole sealing at about 4. 2 ~ 5. 5 m. The hole sealing process has certain defects,too little part of the drilling hole sealing reagent dosage,sealing hole depth and hole sealing pipe before and after the client is not plugging device,etc.By analyzing the contrast cement hole sealing and conventional marithan hole sealing effect,gas drainage gas concentration increased by more than 35%,the same conditions mudding water hole drilling extraction from pure gas quantity slightly higher than that of conventional Mary come loose hole sealing,and relatively low prices,cement plug hole economy marithan hole sealing.

关 键 词：抽采钻孔 封孔工艺 技术改进 水泥封孔 

分 类 号：TD712.6[矿业工程—矿井通风与安全]