The technical problem to be solved by the present invention is to provide a pulsating high-pressure air creep fracturing and permeability enhancement technology and device with air as the medium. The device comprises an air compressor, a high-pressure pulsating pump, a gas drainage pump, a pressure controller, a connecting head, a sealing device, a high-pressure connecting pipe, a water knife drilling hole, a medium, etc. The features are as follows: the air compressor and the pressure described herein. The controller is connected by a high-pressure connecting pipe, the high-pressure pulsating pump and the pressure controller are connected by a high-pressure connecting pipe, the air compressor and the high-pressure pulsating pump are connected by a high-pressure connecting pipe, the gas drainage pump and the pressure controller are connected by a high-pressure connecting pipe, and the pressure controller and the sealing device are connected by a high-pressure connecting pipe. The connection head is connected. The sealing device and the water cutter borehole are fixed by expansion accelerator. The medium is pressed into the water cutter borehole through air compressor and high pressure pulsating pump. The medium permeates the coal seam along the joint cracks of the coal seam and increases the coal seam cracks, thereby increasing the permeability of the coal seam, improving the gas drainage efficiency and effectively preventing coal and gas. Outstanding.
【技术实现步骤摘要】
以空气为介质的脉动式高压空气蠕变压裂增透技术及装置
本专利技术涉及煤矿井下瓦斯治理
，具体为以空气为介质的脉动式高压空气蠕变压裂增透技术及装置，属于煤矿开采
技术介绍
瓦斯爆炸是严重威胁煤矿安全生产灾害之一。由于地壳变迁及成煤年代的不同，地应力的变化使煤层及级围岩的透气性变差，瓦斯含量增加，相对瓦斯的涌出量增高，瓦斯的危险性增加。提高煤层的增透性，有效的排放煤层中的瓦斯是矿井区域防治瓦斯煤与瓦斯突出的最有力措施之一。通过瓦斯抽放可降低煤层的瓦斯含量和压力，从而消除煤与瓦斯突出隐患。目前国内主要采用水刀切割钻孔技术(图1)，利用CO2相变和高压水压裂煤层提高煤层的增透性，具体方法有以下：(图2)钻孔水刀切割与液态CO2相变结合技术。CO2相变致裂技术是利用液态CO2在一定温度下迅速汽化膨胀原理研发出的一种物理爆破技术。液态CO2相变致裂增透首先向目标煤体施工钻孔，然后将液态CO2预裂装备送至钻孔预定深度后起爆，预裂装备内的液态CO2瞬间膨胀产生高压气体作用在钻孔壁煤体上，煤体受力破碎、原始裂隙得到扩展，从而为瓦斯流动创造通道，起到增加煤层透气性和渗透...
【技术保护点】
1.本专利技术所要解决的技术问题在于提供了一种以空气为介质的脉动式高压空气蠕变压裂增透技术及装置，其包空气压缩机、高压脉动泵、瓦斯抽放泵、压力控制器、连接头、封孔器、高压连接管、水刀钻孔、介质等组成，其特征在于：所述的空气压缩机和所述的压力控制器之间靠高压连接管连接，所述的高压脉动泵和所述的压力控制器之间靠高压连接管连接，所述的空气压缩机和所述的高压脉动泵之间靠高压连接管连接，所述的瓦斯抽放泵和所述的压力控制器之间靠高压连接管连接，所述的压力控制器和所述的封孔器之间靠连接头连接，所述的封孔器和所述的水刀钻孔之间靠膨胀速凝剂固定，所述的介质通过空气压缩机和高压脉动泵压入水刀钻...
【技术特征摘要】
1.本发明所要解决的技术问题在于提供了一种以空气为介质的脉动式高压空气蠕变压裂增透技术及装置，其包空气压缩机、高压脉动泵、瓦斯抽放泵、压力控制器、连接头、封孔器、高压连接管、水刀钻孔、介质等组成，其特征在于：所述的空气压缩机和所述的压力控制器之间靠高压连接管连接，所述的高压脉动泵和所述的压力控制器之间靠高压连接管连接，所述的空气压缩机和所述的高压脉动泵之间靠高压连接管连接，所述的瓦斯抽放泵和所述的压力控制器之间靠高压连接管连接，所述的压力控制器和所述的封孔器之间靠连接头连接，所述的封...
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。