| 蒲成志,张春阳,黄永恒.仰孔中声波法测试围岩松动范围的孔内堵水技术[J].南华大学学报(自然科学版),2015,29(2):25~29.[PU Cheng-zhi,ZHANG Chun-yang,HUANG Yong-heng.The Water Plugging Technology in Drilling During the Measurement of Thickness of Loosen Zone by Using Acoustic Testing Technique in Upward Slant Drilling[J].Journal of University of South China(Science and Technology),2015,29(2):25~29.] |
| 仰孔中声波法测试围岩松动范围的孔内堵水技术 |
| The Water Plugging Technology in Drilling During the Measurement of Thickness of Loosen Zone by Using Acoustic Testing Technique in Upward Slant Drilling |
| 投稿时间：2014-10-17 |
| DOI： |
| 中文关键词: 仰孔 松动圈厚度 孔内堵水技术 声波测试技术 |
| 英文关键词:upward slant drilling the thickness of loosen zone the water plugging technology in drilling acoustic testing technique |
| 基金项目:国家自然科学基金资助项目(51404179);湖南省博士生科研创新基金资助项目(CX2012B072) |
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| 中文摘要: |
| 声波法是现场测试巷道围岩松动破坏范围最常用的技术.基于声波法在裂隙发育围岩仰孔中进行巷道围岩松动圈厚度现场测试时的不足,提出将耦合水封闭在探头有效测试范围内的设计思路,并据此设计孔内堵水方案,研制出一种新的孔内堵水装置,并将其应用在金川深部矿区巷道围岩松动圈厚度测试工作中,测试结果表明:这种孔内堵水装置使得钻孔内耦合水集中在探头所处钻孔长度范围内,因而能够有效控制耦合水在钻孔内的渗流面积与散失速率,进而达到测试工作中探头被耦合水完全包裹的目的,使得声波信号的稳定性满足测试要求.工程实例表明:采用孔内堵水技术的设计方法在复杂围岩条件及测试环境下测试围岩破坏范围具有普遍实用性及可行性. |
| 英文摘要: |
| Acoustic testing technique is the most commonly used method on the testing of thickness of loosen zone on site.Under the condition of fracture development surrounding rock,when the field testing of thickness of loosen zone was made in the upward slant drilling,the deficiency of acoustic testing technique would appear,based on which,it was proposed that the coupling water was closed in the effective testing length of probe.Then the solution of water plugging in drilling was designed.According to this solution,a new kind of water plugging device was designed.Afterward,it was used in the testing of thickness of loosen zone in the surrounding rock of roadway on the deep area of Jinchuan.Testing results showed that:by using this kind of water plugging device,the coupling water was concentrated around the extent of probe in the drilling.Therefore,the seepage area and speed of coupling water could be controlled effectively.Then the aim was attained that probe was completely encapsulated by the coupling water.Also,the stability of acoustic signal could meet the requirement of testing work.The example of engineering indicated that the design of water plugging device in drilling has universal practicability and feasibility during the testing of thickness of loosen zone in complex surrounding rock condition and testing environment. |
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