78results about How to "Avoid fracking" patented technology

The invention discloses a true triaxial loading and unloading test device for large-size bedded pressure-bearing rock and a testing method. The device comprises a confining pressure loading module, a sample storage and water outlet module, a confined water loading module, a load loading module and a signal collecting and processing system, wherein the confining pressure loading module comprises two horizontal loading and unloading systems which are independent and perpendicular to each other and is used for performing horizontal load loading and unloading on the wrapped sample storage and water outlet module; the confined water loading module is located at the bottom of the sample storage and water outlet module and is used for performing confined water loading and unloading on the bottom of the bedded rock; the load loading module is located at the top of the sample storage and water outlet module and is used for performing vertical load loading and unloading on the top of the bedded rock; the signal collecting and processing system is used for collecting and analyzing signals in a test process. The test device realizes the true triaxial test of the bedded rock through four independent loading and unloading systems, truly simulates three-way anisobaric stress state of the coal-series bedded pressure-bearing rock and is more true and more reliable than a conventional triaxial test.

An earth boring apparatus may include an earth-boring cutter head, and a casing secured to the cutter head and extending rearwardly therefrom so that the casing and cutter head are rotatable together as a unit. A casing cuttings passage may extend from adjacent the casing front end to adjacent the casing back end. An entrance opening of the casing cuttings passage, which is adjacent the cutter head, is adapted to allow cuttings to move through the entrance opening into the casing cuttings passage. In some implementations there may be a stationary auger positioned within the casing cuttings passage rearwardly from the entrance opening, such that the stationary auger does not rotate when the casing and cutter head are rotated together as a unit.

The invention relates to a pipe cutting and grooving machine which aims at solving the technical problems that the cutting surfaces are uneven and the construction requirements are not met due to the existing manual cutting on plastic pipes and grooving on the pipes is complicated in technology. The pipe cutting and grooving machine comprises a frame, a clamping rotation mechanism, a cutting and grooving mechanism and a power source; the clamping rotation mechanism, the cutting and grooving mechanism and the power source are correspondingly arranged on the frame in turn; the clamping rotation mechanism is used for clamping the pipes and driving the pipes to rotate. According to the pipe cutting and grooving machine, the cutting and grooving machining on the pipes can be effectively and rapidly achieved, the surfaces of the grooved and cut pipes are neat and smooth, and the construction requirements are met.

The invention provides a touch panel with a conductive protection layer. The touch panel with the conductive protection layer is characterized in that the touch panel comprises a substrate, a sensing electrode layer, a signal lead layer and a conductive protection layer, wherein a joint area is defined on the substrate, the sensing electrode layer is arranged on the substrate, the signal lead layer is arranged on the substrate and comprises multiple signal leads, one end of each signal lead is electrically connected to the sensing electrode layer, the other end of each signal lead is gathered to the joint area, the conductive protection layer comprises multiple conductive blocks, each conductive block is located on the corresponding signal lead in the joint area, and the signal leads are electrically insulated with one another. The invention further provides a manufacturing method of the touch panel with the conductive protection layer. The touch panel and the manufacturing method aim to solve the problem that signal leads are prone to fracturing when being attached to a flexible printed circuit in the prior art, and the product yield is increased.

The invention relates to a loose sandstone fracturing, filling, sand prevention, yield increase and profile control integrated design method which comprises the following steps: 1) performing a fracturing crack initiation and extension numerical simulation experiment on loose sandstone through a fracturing device to obtain a loose sandstone fracturing crack initiation and extension numerical simulation result; 2) reservoir numerical simulation: describing the real reservoir dynamic state by using the established running water two-phase seepage mathematical model, and simulating the exploitation process of an actual oil field by using seepage mechanics; and (3) on the basis of the fracturing crack initiation and extension numerical simulation result and the oil reservoir numerical simulation result, implementing fracturing, filling, profile control and yield increase integrated design. According to the method, a high-permeability layer is prevented from being fractured while a relatively-low-permeability layer is selectively fractured, the relatively-low-permeability reservoir is transformed, and the purpose of integrated operation of profile control, water control, sand preventionand yield increase is achieved.

The invention discloses a trimming machine for trimming a base of a damper. The trimming machine comprises a machine frame (1), a machine head (2) is arranged on the machine frame (1), a rotary disc (3) driven by an electric motor is further arranged on the machine frame (1), an upper locating column (4) and two rollers (6) are respectively arranged on the wheel carrier (5), a device for adjusting the positions of the rollers (6) is further arranged on the wheel carrier (5), a radial convex ring (19) is arranged on the circumference face of each roller (6), and a top head (7) is matched with the bottom end of the upper locating column (4) in a rotatable mode. A lower locating column (8) and a linkage pin (9) are arranged on the rotary disc (3). The trimming machine further comprises a numerical control system, a first pressure sensor is arranged on the top head (7), and the numerical control system is respectively connected with the first pressure sensor and the electric motor driving the rotary disc (3). The trimming machine is fast in speed, high in precision and high in efficiency.

The invention discloses a self-pressurization coal body fracturing permeability-increasing enhanced gas extraction method based on ultrasonic waves. The self-pressurization coal body fracturing permeability-increasing enhanced gas extraction method comprises the steps: a permeability-increasing drill hole driven in a coal seam in a high-position drainage roadway, and the permeability-increasing drill hole is sealed through two hole sealing bags and grouting; water is injected into the deepest position of the permeability-increasing drill hole through the gravity of the water, and a one-way ball valve on a water injection pipe is closed to stop water injection at the moment when the internal water pressure exceeds the gravity of the water in the water injection pipe; the ultrasonic waves are emitted through ultrasonic vibrators, the water temperature rises and vaporizes due to the loss of the ultrasonic waves transmitted in water, the pressure of the deepest position of the permeability-increasing drill hole is increased, meanwhile, the cavitation effect is generated when the ultrasonic waves are transmitted in the water, and extremely high tensile stress is formed through generation and bursting of cavitation bubbles; under the combined action of the cavitation effect and vaporization pressurization, surrounding coal is fractured to form fractures; and in the whole process, a water pump is not needed, fracturing permeability increasing can be continuously conducted on a coal body only through combination of the gravity of the water and the ultrasonic waves, therefore the gas extraction effect on the coal seam after permeability increasing is guaranteed, and energy consumption is effectively reduced.

The invention relates to a PVC tube, in particular to a PVC anti-freezing tube which mainly comprises a tube body, sponge is arranged on the tube body, steel balls are arranged in the sponge, and the sponge is sleeved with a PVC tube sleeve. The PVC anti-freezing tube is simple in structure and reasonable in design, and a hollow layer is filled with the sponge, so that the heat preservation effect of the tube body is good, and the tube body is not prone to be frozen and not prone to cracking. Under the action of the steel balls, the gap existing between the external tube sleeve and the tube body is reduced, the external PVC tube sleeve is prevented from being fractured, and therefore the service life of the PVC anti-freezing tube is prolonged.

The invention discloses an anti-cracking press for producing ceramic wall and floor tiles. The press comprises a main body and a handle, a load bearing plate is arranged at the upper portion of the main body, load bearing supports are fixed at the left and right sides of the lower portion of the load bearing plate, a sliding groove is embedded in each load bearing support, a sliding block is installed in each sliding groove, and a pressing plate is connected to the right sides of the sliding blocks; a base is installed at the lower portions of the load bearing supports, grooves are formed in the lower portion of the inner wall of the base, a sliding rod is embedded in each groove, and a placement plate is fixed at the right side of each sliding rod. According to the anti-cracking press forproducing the ceramic wall and floor tiles, guide rods are arranged, a die is placed on a worktable, and through downward pressing molding of the pressing plate, the guide rods connected to the lowerportion of the worktable move towards the interiors of guiding grooves; through the arrangement of springs, the pressure of the pressing plate is buffered, the long-time use of the worktable is facilitated, the worktable is protected through the arrangement, and therefore the service life of the worktable is prolonged.

The invention relates to a wood modification device which is characterized in that a pressure jar is connected to a liquid medicine circulation system through a pipeline, wherein the upper part of the pressure jar is provided with a hot air valve through the pipeline. The working principle is as follows: all valves are closed at first; a 50-150mm cylindrical surface is pre-processed on one end of a log and the log is arranged in the pressure jar through an upper cover round hole; the log and an upper cover are fixed through a block ring and are in sealing connection; and then, a tree liquid valve, a right lower valve and a left upper valve are opened; a liquid medicine pump is opened for pumping the liquid medicine in a liquid medicine jar into the pressure jar; the liquid medicine enters from a lower end face of the log and the tree liquid in the log is expelled to flow out from an upper end face of the log; and then the tree liquid passes through the tree liquid valve through a liquid collection slot and flows into the tree liquid jar; and when the viscosity or color of the liquid flowed from the upper end face of the log changes obviously, a return valve is opened, the tree liquid valve is closed, the liquid flowed out from the end face of the log flows back to the liquid medicine jar, a heater is started for heating the liquid medicine which enters into the pressure jar till the liquid medicine is at a preset temperature, and the liquid medicine which flows by the log is quickly heated and soaked by the log.

The utility model relates to a shock-absorbing, compression-resistant, anti-slip sleeper for subsequent transportation of a shield machine. It is characterized in that: the arc-shaped steel belt fits the inner surface of the shield tunnel ring; the arc-shaped steel belt is provided with vertical load-bearing ribs, and the top surface of the vertical load-bearing ribs is on the same elevation; the vertical load-bearing The ribs are provided with horizontal supports for installing and supporting the rails. Its advantages are: the battery car transfers the load to the inner surface of the shield tunnel ring through the horizontal support, the vertical load-bearing ribs, and the arc-shaped steel belt in sequence, and converts the concentrated load transferred vertically into a uniform surface load. The stress carried by the lower part of the tunnel pipe ring is uniform, which effectively prevents the local concrete at the lower part from being fractured, prevents the damage, deformation, and slippage of the local concrete at the lower part of the shield tunnel pipe ring, and improves the stability and safety of the work. , which can meet the technical requirements for the construction of super-large-diameter shield tunneling projects.

The invention provides a copper interconnection structure and a method for manufacturing the same. The copper interconnection structure comprises a semiconductor substrate, a first interlayer dielectric layer disposed on the semiconductor substrate, a copper plug running through the first interlayer dielectric layer, a second interlayer dielectric layer disposed on the first interlayer dielectric layer, and a copper interconnection wire running through the second interlayer dielectric layer. A first protective layer is arranged between the first interlayer dielectric layer and the copper interconnection wire, and a second protective layer is arranged between the second interlayer dielectric layer and the copper interconnection wire. According to the copper interconnection structure provided by the invention, as the first protective layer is arranged between the first interlayer dielectric layer and the copper interconnection wire and the second protective layer is arranged between the second interlayer dielectric layer and the copper interconnection wire, direct contact between the copper interconnection wire and the first interlayer dielectric layer and between the copper interconnection wire and the second interlayer dielectric layer is avoided, and the first interlayer dielectric layer and the second interlayer dielectric layer are prevented from being fractured by the copper interconnection wire.