6 results about "Red sandstone" patented technology

This invention relates to the field of pile foundation construction equipment technology, and discloses an adaptive borehole wall drilling tool for fractured red sandstone strata. The main body of the drilling tool has a central pilot drill bit and peripheral reaming drill bits fixed at its bottom. An arc-shaped extrusion plate driven by a hydraulic telescopic arm is installed on the outside, and a surface control cabinet is provided. The control system integrates multiple collaborative modules: a sensing and positioning module determines the three-dimensional coordinates of leakage fractures based on lateral mud pressure drop; a grouting and pausing module drives the drilling tool to align and perform localized sealing grouting; a micro-rotation self-cleaning module removes external deposits and replaces residual fluid in the pipeline through alternating rotation and hydraulic jetting; and an extrusion wall protection module controls the telescopic arm to compact the borehole wall based on contact stress feedback. This invention integrates fracture sensing, targeted grouting, and mechanical wall protection, enabling borehole leakage repair and compaction operations to be completed without lifting the drill.

The utility model discloses a device of on -the -spot red sandstone quick determination disintegration coefficient, including test device main part, be equipped with the base on test device main part, install the soaking cylinder and drying cylinder on the base, the utility model through setting up soaking area and drying area, respectively to red sandstone sample carries out soaking and drying treatment, through the lifting rod and the rotating motor drive sample moves between drying cylinder and soaking cylinder, spares the manual operation of operator, through setting up multiple test area, simultaneously, the same condition carries out multiple group disintegration test, and tries to exclude accidental error, in the soaking process, through the magnetic capsule rotation, drive the clear water in the soaking area rotation, utilize the flow to accelerate the disintegration of red sandstone, and the flow speed is limited, not to produce bigger external force, seriously influence red sandstone disintegration rate, in the drying process, through the fan acceleration drying, and remove the loose particle on the sample surface when drying, after drying, through the fan acceleration sample cooling.

The utility model discloses a foundation pit water level monitoring device suitable for a water-rich red sandstone stratum, which comprises a host machine, a connecting pipeline arranged on the host machine and a monitoring probe arranged at one end, far away from the host machine, of the connecting pipeline, a mounting mechanism is arranged on the inner side of the protective shell, a cover plate is arranged at an opening in the top end of the protective shell, and a limiting mechanism matched with the mounting mechanism is arranged on the inner wall of the protective shell; when the protective shell is installed, the rotating ring is rotated, the connecting rod slides in the arc-shaped groove and the adjusting plate extends out, so that the clamping plate can abut against the inner wall of the host installation hole, the protective shell is limited and fixed, the installation mode is stable and reliable, the protective shell can be effectively prevented from inclining or loosening in the using process, and the safety of the host is improved. And the stability and the accuracy of the monitoring equipment are ensured.

The invention discloses a red sandstone grade classification device combined with excavation parameter deduction and a use method, and relates to the technical field of red sandstone grading, the red sandstone grade classification device comprises a workbench and a simulation test box mounted on the top of the workbench; the partition plate is mounted in the simulation test box; the placing seat is arranged at the top of the workbench and is positioned in the simulation test box; the water tank is arranged at the top of the workbench and located in the simulation test box; the pressing mechanism is arranged in the simulation test box and is used for pressing the red sandstone; the drilling detection mechanism is arranged in the pressing mechanism and is used for detecting red sandstone data; according to the device, the drilling detection mechanism is arranged, excavation parameters are combined, excavation drilling work of the red sandstone is simulated, so that rough information of a red sandstone sample is obtained, data comparison is facilitated, and the grades of the red sandstone are quickly classified.

The utility model discloses a red sandstone stratum foundation pit dewatering construction structure, which belongs to the technical field of foundation pit dewatering and comprises a mounting ring, a drill rod sleeve, a water pumping pipe and a driving mechanism, the top of the drill rod sleeve is rotatably connected with the mounting ring, the drill rod sleeve is of a hollow structure, a water collecting area is formed in the drill rod sleeve, and the water pumping pipe is arranged in the water collecting area. The water pumping pipe is rotationally arranged in the drill rod sleeve, the diameter of the water pumping pipe is smaller than the inner diameter of the drill rod sleeve, the water pumping pipe extends to the bottom of the drill rod sleeve, a plurality of water seepage holes are formed in the side wall of the drill rod sleeve, and foundation pit underground water enters the water collecting area through the water seepage holes and is discharged through the water pumping pipe; and the driving mechanism is used for driving the drill rod sleeve to rotate. According to the red sandstone stratum foundation pit dewatering construction structure, along with the increase of the excavation depth of the foundation pit, the driving mechanism drives the drill rod sleeve and the water pumping pipe to continuously drill downwards, the drainage process does not need to be interrupted or the water pumping pipe does not need to be pulled out of the water collecting well, the operation process is simplified, and the working efficiency is improved.

The invention belongs to the technical field of road construction, and particularly relates to an unsaturated red sandstone weathered soil roadbed slope stability analysis method which comprises the following steps: step 1, US-PB model development and calibration including test data acquisition, initial model construction, fracture index and relation establishment and model optimization and calibration; according to the unsaturated red sandstone weathered soil roadbed slope stability analysis method, by arranging the US-PB model, particle crushing and matrix suction coupling are incorporated into strength description, and the effect of more truly reflecting the mechanical behavior of red sandstone weathered soil is achieved; the problems of strength overestimation and inaccurate deformation prediction caused by neglect of an unsaturated state and particle breakage in a traditional method are solved.