49results about How to "Reduce secondary disasters" patented technology

The invention discloses a multifunctional crane and an emergency rescue fire-fighting truck, and relates to the technical field of engineering machinery. The multifunctional crane and the emergency rescue fire-fighting truck solve the technical problems of high labor intensity and poor safety in the prior art. The multifunctional crane comprises a telescopic arm, a base, a hydraulic pipeline conveying device, a hydraulic tool, a hydraulic oil supply device, a first lifting hook and a second lifting hook, wherein the telescopic arm comprises an external segment arm and an internal segment arm; the internal segment arm can move to an extension position or a retraction position relative to the external segment arm; the first lifting hook and the base are connected with one end, extending out of the external segment arm, of the internal segment arm; the hydraulic tool is detachably and fixedly connected with the base and comprises a hydraulic scissor, a hydraulic percussion drill or a hydraulic gripper; and the second lifting hook is connected with the external segment arm. The emergency rescue fire-fighting truck comprises the multifunctional crane. The emergency rescue fire-fighting truck is used for increasing functions of the multifunctional crane, and the safety of the emergency rescue fire-fighting truck is improved.

The invention discloses a method for disaster prevention and rescue of extra-long railway tunnels by using a road-rail dual-purpose vehicle. The accident train drives into the emergency rescue station, and the rescue train transports at least one public-rail combined shuttle bus to the tunnel opening and leaves the road-railway. The shared shuttle bus, the public-rail combined shuttle bus runs along the main line tunnel in railway mode, and converts to the road mode after driving outside the emergency rescue station, enters the safety tunnel through the cross passage, and reaches the vicinity of the evacuation area for the trapped people. The highway-rail combined ferry transports the trapped persons to the hole and is connected to the rescue train, and the rescue train drives out of the accident area to complete the rescue and evacuation. The air fluidity is low in the super-long tunnel, resulting in rapid consumption of oxygen content in the air and difficulty in moving people. The use of the public-rail combined shuttle bus avoids long-distance travel of passengers, ensures the effectiveness of evacuation, and protects the lives of passengers.

The invention relates to a reflection heat insulation type photovoltaic building elevation and a photovoltaic building. The reflection heat insulation type photovoltaic building elevation includes a building exterior wall and a photovoltaic panel arranged at the outer side of the building exterior wall; the surface of the outer side of the building exterior wall is provided with a heat reflection layer; and an air flow channel for air circulation exists between the photovoltaic panel and the building exterior wall. The photovoltaic building is a building at least one surface of which adopts the reflection heat insulation type photovoltaic building elevation. Compared with the prior art, the reflection heat insulation type photovoltaic building elevation of the invention is provided with the heat reflection layer which can reflect heat emitted by the back panel of the photovoltaic panel, and therefore, indoor temperature rise of the building caused by heat emission of the back panel of the photovoltaic panel can be alleviated, and the reflection heat insulation type photovoltaic building elevation is provided with the air flow channel which makes reflected heat taken away from the surface of the wall through air.

The invention relates to a method for controlling blasting and slope cutting of road cutting shallow hole steps under a complex environment. The method comprises the following steps that (1) the road cutting slope cutting excavation range and workload are checked; (2) the surrounding environment of a slope cutting and blasting area is surveyed on side and actually measured; (3) a reasonable blasting scheme and blasting devices are selected; (4) blasting control parameters are designed and calculated; (5) blasting safety distance estimation and safety checking are carried out; (6) blasting safety protection of the complex environment is carried out; and (7) the blasting effect is checked. According to the method for blasting and slope cutting of a road cutting, a reserved partition and longitudinal pull trench excavation is adopted; a town shallow hole multi-row millisecond blasting control method is adopted in partitions and partition stonework; the process is carried out layer by layer from top to bottom; a layer-by-layer pull through manner is adopted in longitudinal pull trenches so as to facilitate muck removal and accelerate the construction progress; and smooth blasting is adopted in the positions close to last slope lines so as to protect the integrity and stability of slope surrounding rock. The method is high in economic performance, safety and systematicness and can provide reliable method support for highway and railway road cutting slope cutting and blasting excavation under the complex environment.