14 results about "Groundwater flow" patented technology

The invention belongs to the technical field of tunnels, and particularly relates to a treatment method for a building door tunnel penetrating a karst underground river reach, which comprises the following steps: step 1, multi-source geophysical prospecting fusion investigation: aiming at the tunnel karst underground river reach and the range of 500m around the tunnel karst underground river reach; the method comprises the following steps of: delineating a karst abnormal area by adopting semi-aviation transient electromagnetism; screening a strong corrosion area by adopting a depression analysis method; verifying parameters of the abnormal area through surface drilling and coring; identifying surface hydrology, lithology and seepage data characteristics through unmanned aerial vehicle-mounted high-resolution multispectral and thermal infrared cooperative remote sensing; karst water dynamic conditions including underground water flow velocity, flow direction and permeability coefficient, corrosion evolution characteristics including cavern forming time and expansion rate, and key physical and mechanical parameters including cavern filler porosity, permeability coefficient, surrounding rock integrity coefficient, uniaxial compressive strength, elastic modulus and Poisson's ratio are obtained. According to the treatment method for the building door tunnel to penetrate through the karst underground river section, the karst space characteristics are clearly presented through the arrangement of the treatment method for the building door tunnel to penetrate through the karst underground river section.

This utility model discloses a pressure-type anti-buoyancy anchor waterproof structure. A frustum-shaped water-storing buffer sleeve is fixedly installed on the outer wall of the middle part of the protective sleeve. The interior of the frustum-shaped water-storing buffer sleeve is filled with a drainage filling layer. Inclined water distribution pipes are symmetrically fixedly connected to both ends of the frustum-shaped water-storing buffer sleeve. This utility model utilizes the frustum-shaped water-storing buffer sleeve to provide a certain buffer area for groundwater to flow upward, preventing groundwater from directly seeping upward along the edge of the protective sleeve. The drainage filling layer plays a role in shaping and supporting the frustum-shaped water-storing buffer sleeve, improving its structural strength and preventing it from being squeezed and deformed underground. Water can flow inside the drainage filling layer, while the inclined water distribution pipes divert the flowing water, discharging it to the far sides of the anchor rod, allowing it to re-infiltrate into the underground soil, thus significantly reducing the amount of groundwater flowing to the surface.

The invention belongs to the technical field of underground pipe geothermal heating, and relates to an asymmetric arrangement method and design method of a buried pipe group for an underground water seepage field, and the method comprises the following steps: in the flowing direction of underground water, the depth of buried pipes is non-uniformly distributed according to the gradient principle of'shallow upstream and deep downstream '; the horizontal distances between the buried pipes are non-uniformly distributed according to the principle that the upstream is dense and the downstream is sparse; in the three-dimensional space, the adjacent buried pipes are distributed in a stepped mode or a staggered mode through differential arrangement of the depth and the distance, so that the heat affected zones of all the wells are overlapped in a staggered mode in the vertical direction and the horizontal direction. The depth, the horizontal distance and the arrangement form of the buried pipes are differentially adjusted in the seepage direction, so that the heat extraction strength of a pipe group is matched with the heat-carrying recovery capacity of underground water in space, cold accumulation is restrained, and dynamic balance of a regional rock-soil thermal field and long-term efficient and stable operation of a system are achieved.

The application provides a groundwater flow field information simulation method and system, including obtaining simulation basic data, obtaining hydrological event data through the simulation basic data, obtaining spatial correlation characteristics based on the hydrological event data and using clustering operation, and generating a geological hypothesis set; constructing an initial network topology framework and initializing through the simulation basic data and the geological hypothesis set, extracting an initial collaborative sub-network through the initial network topology framework and defining an execution rule; obtaining a correction parameter adjustment scheme set and a chaos parameter adjustment scheme set through the initial network topology framework respectively and generating a final scheme set, simulating based on the final scheme set to generate a deduction simulation result; performing cyclic deduction and obtaining a final simulation result based on a convergence condition, and providing a digital twin simulation method which can be based on and evolve with hydrogeological physical laws.

This invention discloses an underground water supply system for a shield tunnel and its installation method. The tunnel is composed of segments, including a pipeline module for connecting groundwater on both sides of the tunnel and an intelligent control module for enabling self-adjustment and self-adaptation of the water supply equipment. The intelligent control module controls the pipeline module. Within each segment ring, a water collection pipe is installed on the side of the segment ring that contacts the higher water level, and a drainage pipe is installed on the side of the segment ring that contacts the lower water level. A guide pipe connects the water collection pipe and the drainage pipe, ultimately forming an interconnected water supply system. Groundwater flows from the side with the higher water level through the water collection pipe, guide pipe, and drainage pipe to the side with the lower water level, thereby maintaining the original water level around the tunnel, protecting the groundwater environment before tunnel construction, and avoiding adverse effects such as ground subsidence and ecological damage caused by groundwater obstruction and changes in groundwater level.

The invention provides a high-salt mine water deep stratum reinjection chemical blockage prediction simulation method, which comprises the following steps of: establishing a water-rock reaction mineral list by analyzing hydrochemical characteristics of reinjection water and underground water of a deep reinjection layer and mineral component content of the reinjection layer, and calculating a chemical blockage prediction result by combining mineral reaction kinetics and nonlinear influence of high TDS (Total Dissolved Solid) on a reaction rate; an underground water flow-chemical reaction coupling model is constructed, and the mineral precipitation process and the influence of the mineral precipitation process on the porosity are simulated. Finally, a risk index (CRI) early warning model based on the porosity change rate is established, quantitative evaluation and graded early warning of the blockage risk of the reinjection well are achieved, and a scientific basis is provided for guiding blockage dredging measures and prolonging the service life of a well hole.

The utility model discloses an underground water flow direction measuring device, which belongs to the technical field of underground water monitoring and comprises a cylinder, the bottom of the cylinder is connected with an isolation component, and the top of the cylinder is provided with a positioning component. A sliding limiting transmission block between a limiting block and a limiting groove can drive the filter cylinder to move out of the isolation cylinder, and water flow impacts on a marker to cause deviation, so that the device has a better detection effect on the flow direction of underground water; through the arrangement of the positioning assembly, the first motor drives the second straight gear to rotate, the lead screw can rotate in a limited mode under meshing transmission between the second straight gear and the first straight gear, the sliding groove limits the sliding blocks under meshing connection between the lead screw and the sliding blocks, and the two sliding blocks can drive the abutting blocks to move outwards to be supported on the underground rock wall. The device can be directionally positioned, so that the flow direction detection precision of underground water is improved.

The present application relates to the technical field of data processing, and more particularly to a groundwater renewal capacity evaluation method and system based on multi-source data fusion. The method comprises the following steps: obtaining a multi-source heterogeneous data set, processing geological heterogeneity through a spatial interpolation method, calculating the permeability value of each geological unit, and determining the permeability difference characteristics; predicting the spatio-temporal distribution of groundwater flow rate based on the permeability difference characteristics, combining with dynamic hydrological data, adjusting and calibrating the time sequence, and obtaining dynamic calibrated flow rate parameters; using the dynamic calibrated flow rate parameters, integrating the recharge rate and solute migration path information, calculating the stability parameters of hydrological cycle, and generating quantitative indicators of groundwater renewal rate and cycle efficiency; obtaining an optimized evaluation model, integrating multi-source data, calculating the comprehensive evaluation value of groundwater renewal capacity, and determining the final evaluation result of groundwater renewal capacity. The present application can accurately evaluate the groundwater renewal capacity and is suitable for the management and sustainable utilization of groundwater resources in karst areas.

An auxiliary surveying device for groundwater flow velocity and direction includes a drilling mechanism, a floating mechanism, and a clamping mechanism. The drilling mechanism is rotatably mounted on the outer ring of a long sleeve, the floating mechanism is slidably mounted on the inner ring of the long sleeve, and the clamping mechanism is movably mounted at the upper end of the long sleeve. The drilling mechanism is used to protect the measuring instrument and clear the path for the equipment to submerge, removing minor collapses and soil obstacles. The floating mechanism is used to sense the water surface, thereby positioning the equipment at the most suitable location for measuring the water flow velocity and direction. The clamping mechanism is used to fix the measuring instrument and, after reaching the measurement position, pushes the measuring instrument out of the equipment to contact the water flow, thereby measuring the water flow velocity and direction.

The application discloses an intelligent control system and method for dewatering of a foundation pit dewatering well, and the method comprises the following steps: acquiring dewatering well layout data, recharge well layout data, monitoring well layout data, target water level data, variable frequency starting water level data, average groundwater flow velocity and flow direction angle, and establishing a control reference model based on water level response curves of different well group combinations in a test dewatering area; collecting real-time water levels, pumping flow rates and electric parameters of each dewatering well, real-time water levels and recharge flow rates of each recharge well, and water levels of surrounding monitoring wells, and inputting the water levels of the surrounding monitoring wells into the control reference model to obtain corrected control water levels of each dewatering well. The application constructs a closed-loop control mechanism based on monitoring correction, well group cooperation and pumping and recharging linkage, and improves the coordination and adaptability of foundation pit dewatering control.

This invention relates to the field of mine pollution management technology, specifically to an intelligent mine management system and method based on the Internet of Things (IoT). The system includes: a mine pollution data acquisition unit that uses mobile IoT sensors to collect real-time groundwater flow path data and pollutant concentration data; an event-driven pollution identification unit that identifies and analyzes dynamic evolution events of underground pollution in the mine based on the groundwater flow path data and pollutant concentration data; a pollution path evolution identification unit that constructs a groundwater pollution propagation evolution map covering the entire path, identifying and tracing upstream pollution source origins, downstream terminal pollution areas, and midstream potential pollution sources; and a pollution situation visualization unit that constructs a mine pollution risk level zoning map and displays it visually on terminal devices. This invention enables the identification and monitoring of post-rain pollution surge events and the traceability and management of potential pollution conditions in the upstream, midstream, and downstream of the entire mine geological structure.

The invention discloses a deep soft soil pre-pressing treatment method which comprises the following steps: firstly, extracting underground water from soft soil in a shallow area within 20 meters through a precipitation pressurizing pipe, and then switching to be connected with pressurizing equipment to pressurize gas in the soft soil in the shallow area; a water storage layer is arranged on the soft foundation ground to conduct sealing performance testing on a sealing film laid on the soft foundation ground, meanwhile, the water storage layer forms stacking loading on soft soil in a shallow layer area, underground water in the shallow layer area is promoted to flow into a plastic drainage plate and be pumped out by a precipitation pressurization pipe, and the gravity of the water storage layer is matched with the precipitation pressurization pipe to conduct gas pressurization on a soil body. Soft soil in a shallow area can be promoted to drain and reinforce, and soft soil in a deep area can be stacked through self gravity, so that underground water in the deep soft soil is extruded into a plastic drainage plate by the shallow soft soil and is conveniently pumped out. By means of the method, the depth of pre-pressing treatment on the soft foundation ground can be increased to be close to 40 m to the maximum from 20 m or below in the prior art, and the foundation reinforcement depth of the soft foundation ground is deeper.

The utility model discloses a heavy metal polluted underground water prevention and control device for a heterogeneous aquifer, which comprises a PRB (Permeable Reactive Barrier), an activating fluid injection well and a water-proof barrier are sequentially arranged along the flow direction X of polluted underground water, and the two sides of the PRB and the activating fluid injection well are respectively provided with a water-proof barrier perpendicular to the water surface. And the waterproof barriers on the two sides are connected with the two ends of the PRB correspondingly. Activating liquid is arranged in front of the injection well and is arranged on the PRB, so that the activating property and the mobility of heavy metal ions are enhanced, the activated heavy metal ions are continuously dissolved out, the connectivity among medium pores is increased, the medium permeability is improved, the mass transfer problem of heavy metal pollutants in a low-permeability field can be effectively solved, the mobility of the heavy metal ions is increased, and the service life of the heavy metal pollutants is prolonged. The method is generally suitable for a heterogeneous site with both a low-permeability site and a high-permeability site, and is not suitable for a single low-permeability site.

The invention relates to the technical field of water resource management and remote sensing technology application, discloses an underground water resource evaluation method based on a remote sensing technology, and aims at overcoming the defects of a traditional underground water evaluation method in the aspects of space coverage, data timeliness and comprehensive evaluation. According to the method, a groundwater resource potential model is established through multi-source information such as remote sensing image data, groundwater level monitoring, soil humidity and meteorological data, and distribution, dynamic change and sustainability of groundwater resources are comprehensively evaluated in combination with groundwater flow and hydrological models. The method comprises the specific steps of obtaining and preprocessing remote sensing data, building a relation model between underground water resources and earth surface features, monitoring and analyzing dynamic changes of the underground water resources, evaluating underground water risks and the like. Compared with the prior art, the underground water resource space distribution map with higher precision can be provided, the underground water level change is updated in real time, and the accuracy and timeliness of the evaluation result are remarkably improved.