38results about How to "Improve exploration effect" patented technology

The invention provides an induced polarization scanning method for simultaneous power supply of four power supplying points. The method comprises the steps of performing simultaneous power supplying through four power supplying points at different positions by means of an electric method transmitter, wherein the directions of current signals which pass through two power supplying points in a relative direction are same, and the directions of the current signals which pass through two other power supplying points are opposite; acquiring potential information and induced polarization informationof measuring points at different positions in a measuring area by an electric method receiver, acquiring resistivity data of the measuring points at different positions through the coefficient of a normalized device in which four power supplying points perform simultaneous power supplying and a resistivity calculating formula, and realizing an induced polarization scanning operation in which thefour power supplying points perform simultaneous power supplying. The induced polarization scanning method has advantages of reinforcing uniformity of middle partial electric field of the measuring area, increasing electric information acquisition amount in different directions of the whole measuring area, improving electric signal strength, reducing isolated influence of a power source, increasing geological information amount of the measuring points through increasing the measuring points, and improving an induced polarization scanning effect, etc.

The invention discloses a hybrid intelligent algorithm-based optimal scheduling method for hydropower station groups in super-large watersheds. The hydropower stations participating in the calculation are selected and corresponding constraint conditions are set, individuals are encoded by an individual serial coding method, and initial populations are generated; the fitness value of each individual is evaluated. , after updating the individual extremum and the global extremum, the mutation operation is performed on the individual extremum, and then the positions of all individuals in the population are updated, and then a mixed search strategy is performed on the individuals in the external archive set to increase the diversity of individuals; finally, the above process is repeated until satisfying Termination condition. The invention has superior optimization performance, strong robustness, fast convergence speed, easy programming and realization, and avoids the curse of dimensionality problem of traditional dispatching algorithms. The application examples in the Wujiang River Basin show that the method of the invention effectively improves the individual convergence speed and the global search ability of the population, can quickly obtain a reasonable and effective hydropower station group dispatching operation mode, and improves the overall dispatching efficiency of the hydropower station group dispatching in the super large river basin.

An asymmetric electrical method-based sounding method is disclosed. A series of equal interval power supply points that are symmetric about only one fixed point are designed, underground power supply can be realized via two power supply points symmetric about the fixed point through an electrical method exploration transmitter, the electrical method exploration transmitter is used for simultaneously receiving electric field signals of all measurement points on an exploration line, and apparent resistivity and induced polarization parameters of each measurement point are obtained when each pair of symmetric power supply points are used for power supply. Via the method disclosed in the invention, workloads of power supply point arrangement can be greatly reduced, a plurality of sounding points can be subjected to sounding operation via a multichannel electrical method instrument or a plurality of electrical method instruments, and exploration efficiency of a two dimensional or three dimensional electrical method can be improved. In a three dimensional asymmetric electrical method sounding mode, exploration efficiency and exploration effects can be improved due to adoption of the three dimensional electrical method sounding mode.

The invention discloses a detection device based on an underwater low-frequency electric field and an underwater detection positioning method. The device comprises a bearing device, a driving cabin body and a control cabin body. A generating electrode and a plurality of receiving electrodes are arranged below a bearing device. A structure that a plurality of sliding grooves are formed in the samecircumference of the transmission bevel gear in a circumferential array manner is utilized. A transmission lead screw is arranged in the sliding groove. A driven bevel gear is fixed at one end of thetransmission lead screw. The driven bevel gear is meshed with the transmission bevel gear. The transmission lead screw is sleeved with a receiving electrode fixing sliding block. The distances from the receiving electrodes to the generating electrodes are equal. A one-to-many array electrode arrangement form is adopted. Real-time acquisition of electric field signals in all directions in a detection area is realized by means of a generating electrode and a plurality of receiving electrodes which are arranged at the central position. Compared with the arrangement form of a single sensor, the electric field signals acquired are more accurate, the acquisition efficiency of the signals is remarkably improved, and the position of the target object between the generation electrode and the plurality of receiving electrodes can be rapidly and accurately acquired.

The invention discloses an active source electrical prospecting method based on passive source electric field signal measurement. According to the method, by observing the characteristics of a passivesource electric field signal in an exploration area, such as the frequency, the intensity, etc., the weak frequency of the passive source electric field signal is selected to send an active source signal, and a receiver receives an electric field signal transmitted by the active source signal through the underground, so that the electric field data with higher quality is obtained, and the electrical prospecting with a better exploration effect is realized. The method has the characteristics of high data quality, high signal-to-noise ratio, good exploration effect and the like, and can indirectly improve the exploration efficiency and reduce the exploration cost.

The invention provides an induced polarization (IP) sweeping method with multiple power supply points realizing simultaneous power supply. According to the method, an electric transmitter is utilizedto simultaneously supply power at five power supply points at different positions, an electric receiver is utilized to obtain the potential information and the IP information of the measurement pointsat the different positions in the measurement area, resistivity data of the measurement points at the different positions are obtained through a normalization device coefficient and a resistivity calculation formula of the multiple power supply points, and IP sweeping operation of the multiple power supply points realizing simultaneous power supply is achieved. The method is advantaged in that the method helps to increase the acquisition amount of electrical information in different directions in the whole measurement area, improve electrical signal intensity, reduce isolation influence of apower source and increase the amount of geological information under the measurement points, and thereby the purpose of improving the IP sweeping effect is achieved.

Provided is a method for correcting the influence of a non-infinite power supply electrode in time-domain induced polarization three-pole sounding. As an infinite power supply electrode for time-domain induced polarization three-pole sounding adopts a non-infinite power supply electrode pattern due to terrain, signal intensity and other causes, there is a need to eliminate the influence of a non-infinite power supply electrode in apparent resistivity and apparent polarizability data of time-domain induced polarization three-pole sounding. Based on the situation, an infinite power supply electrode C is added to measure the influence parameters Rho(B) and Eta(B) of a non-infinite power supply electrode B on the apparent resistivity and apparent polarizability in time-domain induced polarization three-pole sounding data, and the apparent resistivity and apparent polarizability in measured time-domain induced polarization three-pole sounding data are corrected to get data reflecting the actual apparent resistivity and apparent polarizability of a measuring point. Therefore, the data accuracy and exploration effect of time-domain induced polarization three-pole sounding are improved, and the application range of time-domain induced polarization three-pole sounding in complex terrains is widened.

The invention discloses a rod sounding machine for engineering supervision, which relates to the technical field of building exploration equipment. The rod sounding machine includes a rack, a lifting mechanism, and a ramming rod mechanism, wherein the lifting mechanism and the ramming rod mechanism are respectively arranged on the rack, the lifting mechanism is connected with a rammer, the rod sounding mechanism includes a drilling rod, a ramming part fixedly arranged on the drilling rod, a limit piece fixedly connected with the drilling rod and a vertical guide rail fixedly arranged on the rack, the ramming part is slidably arranged on the vertical guide rail in the length direction of the vertical guide rail, the rammer reciprocates between the limit piece and the ramming part through a lifting mechanism, an actuating switch is arranged on the limit piece and electrically connected with the lifting mechanism, the ramming part is provided with a pressure sensor, and the pressure sensor is electrically connected with the lifting mechanism. According to the rod sounding machine, the accuracy of test data and the construction quality are improved.