摘要
针对目前在松软低透气性高瓦斯煤层的矿井瓦斯抽采中采用常规的抽采方法效果都不太理想的状况,在陕西长武亭南煤矿通过利用深孔控制预裂爆破技术,使单孔瓦斯抽采量提高了1.36倍,工作面瓦斯预抽率达到50%以上,煤层透气性系数提高了9倍。通过加强通风排水、硫化氢抽采及爆破孔注石灰浆等措施,使硫化氢得到超前治理,浓度控制在2×10-6～4×10-6以下,有效地改善了工作面的作业环境,实现了安全生产。
As the present result of gas extraction by conventional methods in soft low permeability of high- gas mine is not satisfying, deep hole presplitting controlling blasting technology is adopted in Changwu Tingnan coal mine, Shaanxi province. The amount of a single drilling gas extraction increases by 1. 36 times, face gas extraction rate edges up to 50% and seam permeability coefficient increases by 9 times. By taking some comprehensive measures, such as enhancing ventilation, drainage, extraction of hydrogen sulfide and lime slurry injection in the blast holes, the hydrogen sulphide is controlled in advanced and the concentration is controlled blow 2× 10^-6 -4 × 10^-8 , thus the working environment is effectively improved and the safety in production is ensured.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第5期101-106,118,共7页
Journal of Chongqing University
基金
国家重点基础研究发展计划资助项目(973计划)(编号2011CB201206)
国家自然科学基金青年科学基金资助项目(50904033)
辽宁省自然科学基金项目(编号20102090)
关键词
深孔控制预裂爆破
强化抽放
低透气性
抽采率
硫化氢
deep hole presplitting controlled blasting
forced gas drainage
low permeability
gas extraction efficiency
hydrogen sulfide
