本文選題：鉆孔 + 充氣試驗　； 參考：《巖土工程學報》2017年03期

【摘要】：基于穩(wěn)態(tài)氣體滲流理論推導了巖石滲透率原位測量公式,基于巴甫洛夫斯基雷諾數(shù)公式給出了工程中達西滲流的粗略判斷方法,研制了一套由氣源子系統(tǒng)、氣體質量流量控制子系統(tǒng)、封孔子系統(tǒng)、氣體壓力測量子系統(tǒng)組成的巖石滲透率原位測量系統(tǒng),介紹了各子系統(tǒng)的組件及功能,給出了測量步驟和流程,形成了基于鉆孔充氣試驗測量巖石原位滲透率的完整方法,在某場地花崗巖介質中開展了原位鉆孔充氣試驗,得到了現(xiàn)場鉆孔的原位滲透率數(shù)據(jù),并對試驗中的鉆孔壓力歷程、達西滲流判斷、充氣流量影響、膠塞膨脹壓力影響、測量結果代表范圍等關鍵環(huán)節(jié)進行了深入分析。試驗結果表明該系統(tǒng)穩(wěn)定性好,測量結果合理且代表范圍大,能夠應用于巖石滲透率的原位測量中。
[Abstract]:Based on steady gas seepage theory, rock permeability in-situ measurement formula is derived. Based on Pavlovsky Reynolds number formula, a rough judgment method of Darcy seepage in engineering is given, and a set of gas source subsystem is developed. The in-situ rock permeability measurement system is composed of gas mass flow control subsystem, sealing Confucius system and gas pressure measurement subsystem. The components and functions of each subsystem are introduced, and the measuring steps and flow chart are given. A complete method for measuring in-situ permeability of rock based on borehole aeration test is formed. The in-situ borehole aeration test is carried out in granite medium of a site. The in-situ permeability data of in-situ borehole are obtained, and the borehole pressure history in the test is analyzed. The key links, such as Darcy seepage judgment, inflatable flow, expansion pressure of rubber plug and representative range of measurement results, are analyzed in depth. The experimental results show that the system has good stability, reasonable measurement results and large representative range, and can be used in in-situ measurement of rock permeability.
【作者單位】： 西北核技術研究所;
【分類號】：TU45
，

本文編號：1874251