Sealing Form and Failure Mechanism of Deep In Situ Rock Core Pressure-Maintaining Controller

Table 2

Parameters used in the pressure leakage rate test.

Object	Group number	1	2	3	4	5	6	7	8	9	10
Test chamber	Initial pressure (MPa)	15.9	22.4	31.9	41	50	61.7	71	80.8	89.8	99.1
	Time (s)	150	150	150	150	150	150	150	150	150	150
Conical structure	Initial pressure (MPa)	5.7	14.3	20.8	25.1	30.2	35.3	40.7	45.9	0	0
	Time (s)	1-60	1-60	1-60	1-60	1-60	1-60	1-60	1-60	0	0
Wedge structure	Initial pressure (MPa)	14.9	19.6	30.6	40.3	49.1	60.4	70.6	79.6	90.6	98
	Time (s)	1-60	1-60	1-60	1-60	1-60	1-60	1-60	1-60	1-60	1-60