Abstract: A volume measurement system and method for a closed water-filled karst cave, including a water collecting device, concentration tester and control system. The control system is connected to the water collecting device by a connecting piece. The water collecting device is a container with a top closed and bottom open. The water collecting device top is a piston. The piston is connected to a propulsion rod, and propulsion rod is controlled by control system to extend or retract, so as to realize the forward or backward movement of the piston. An openable and closeable placement table is hinged to the water collecting device's inner wall. The placement table is connected to piston, the placement table moves upward when piston is raised, and placement table moves downward when piston is lowered. The placement table is configured to accommodate a chemical substance. The concentration tester is configured to detect the solution's concentration.

Abstract: A volume measurement system and method for a closed water-filled karst cave, including a water collecting device, concentration tester and control system. The control system is connected to the water collecting device by a connecting piece. The water collecting device is a container with a top closed and bottom open. The water collecting device top is a piston. The piston is connected to a propulsion rod, and propulsion rod is controlled by control system to extend or retract, so as to realize the forward or backward movement of the piston. An openable and closeable placement table is hinged to the water collecting device's inner wall. The placement table is connected to piston, the placement table moves upward when piston is raised, and placement table moves downward when piston is lowered. The placement table is configured to accommodate a chemical substance.

Abstract: A test device and a test method of fractured rock mass collapse and blockfall and fracture water inrush includes a fractured rock mass preparation device, a water source loading device, a surrounding rock pressurization device and a slide rail, wherein the fractured rock mass preparation device is fixed at one end of the slide rail, and the water source loading device is fixed on the other side of the slide rail. An opening is formed in the rock mass water storage structure, and the size of the opening is adapted to the size of the fractured rock mass; the surrounding rock pressurization device includes one bracket and a pressurization structure arranged below the bracket, and a space for accommodating the fractured rock mass is reserved below the pressurization structure; and the bottom support and the bracket are both movably installed on the slide rail.

Abstract: A test device and a test method of fractured rock mass collapse and blockfall and fracture water inrush includes a fractured rock mass preparation device, a water source loading device, a surrounding rock pressurization device and a slide rail, wherein the fractured rock mass preparation device is fixed at one end of the slide rail, and the water source loading device is fixed on the other side of the slide rail. An opening is formed in the rock mass water storage structure, and the size of the opening is adapted to the size of the fractured rock mass; the surrounding rock pressurization device includes one bracket and a pressurization structure arranged below the bracket, and a space for accommodating the fractured rock mass is reserved below the pressurization structure; and the bottom support and the bracket are both movably installed on the slide rail.